Initial commit for Cassandra storage engine.

mysql-test/include/have_cassandra.inc

+#
+# suite.pm will make sure that all tests including this file
+# will be skipped unless innodb or xtradb is enabled
+#
+# The test below is redundant
+
+if (`SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.ENGINES WHERE engine = 'cassandra' AND support IN ('YES', 'DEFAULT', 'ENABLED')`)
+{
+  --skip Test requires Cassandra.
+}

mysql-test/include/have_cassandra.opt

+--cassandra=on

mysql-test/r/cassandra.result

+drop table if exists t0, t1;
+create table t1 (a int) engine=cassandra 
+thrift_host='localhost' keyspace='foo' column_family='colfam';
+ERROR 42000: Incorrect column name 'First column must be named 'rowkey''
+create table t1 (a int primary key, b int) engine=cassandra
+thrift_host='localhost' keyspace='foo' column_family='colfam';
+ERROR 42000: Incorrect column name 'First column must be named 'rowkey''
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+thrift_host='127.0.0.2' keyspace='foo' column_family='colfam';
+ERROR HY000: Unable to connect to foreign data source: connect() failed: Connection refused [1]
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+thrift_host='localhost' keyspace='no_such_keyspace' column_family='colfam';
+ERROR HY000: Unable to connect to foreign data source: Default TException. [Keyspace no_such_keyspace does not exist]
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+thrift_host='localhost' keyspace='no_such_keyspace';
+ERROR HY000: Can't create table 'test.t1' (errno: 140)
+create table t1 (rowkey char(36) primary key, column1 char(60)) engine=cassandra 
+thrift_host='localhost' keyspace='mariadbtest' column_family='cf1';
+insert into t1 values ('key0', 'data1');
+drop table t1;

mysql-test/t/cassandra.test

+#
+# Tests for cassandra storage engine
+#
+--source include/have_cassandra.inc
+
+--disable_warnings
+drop table if exists t0, t1;
+--enable_warnings
+
+# Test various errors on table creation.
+--error ER_WRONG_COLUMN_NAME
+create table t1 (a int) engine=cassandra 
+  thrift_host='localhost' keyspace='foo' column_family='colfam';
+
+--error ER_WRONG_COLUMN_NAME
+create table t1 (a int primary key, b int) engine=cassandra
+  thrift_host='localhost' keyspace='foo' column_family='colfam';
+
+--error ER_CONNECT_TO_FOREIGN_DATA_SOURCE
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+  thrift_host='127.0.0.2' keyspace='foo' column_family='colfam';
+
+--error ER_CONNECT_TO_FOREIGN_DATA_SOURCE
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+  thrift_host='localhost' keyspace='no_such_keyspace' column_family='colfam';
+
+# No column family specified
+--error ER_CANT_CREATE_TABLE
+create table t1 (rowkey char(10) primary key, column1 char(10)) engine=cassandra 
+  thrift_host='localhost' keyspace='no_such_keyspace';
+
+############################################################################
+## Cassandra initialization:
+############################################################################
+--disable_parsing
+
+./cqlsh --cql3
+
+CREATE KEYSPACE mariadbtest
+  WITH strategy_class = 'org.apache.cassandra.locator.SimpleStrategy'
+  AND strategy_options:replication_factor='1';
+
+USE mariadbtest;
+create columnfamily cf1 ( pk varchar primary key, data1 varchar);
+
+--enable_parsing
+############################################################################
+## Cassandra initialization ends
+############################################################################
+
+# Now, create a table for real and insert data
+create table t1 (rowkey char(36) primary key, column1 char(60)) engine=cassandra 
+  thrift_host='localhost' keyspace='mariadbtest' column_family='cf1';
+
+insert into t1 values ('key0', 'data1');
+
+drop table t1;
+
+############################################################################
+## Cassandra cleanup
+############################################################################
+--disable_parsing
+drop columnfamily cf1;
+--enable_parsing
+############################################################################
+## Cassandra cleanup ends
+############################################################################
+

storage/cassandra/CMakeLists.txt

+
+SET(cassandra_sources 
+     ha_cassandra.cc 
+     ha_cassandra.h 
+     cassandra_se.h
+     cassandra_se.cc
+     gen-cpp/Cassandra.cpp
+     gen-cpp/cassandra_types.h 
+     gen-cpp/cassandra_types.cpp
+     gen-cpp/cassandra_constants.h 
+     gen-cpp/cassandra_constants.cpp
+     gen-cpp/Cassandra.h)
+
+#INCLUDE_DIRECTORIES(BEFORE ${Boost_INCLUDE_DIRS})
+INCLUDE_DIRECTORIES(AFTER /home/psergey/cassandra/thrift/include/thrift/) 
+# 
+STRING(REPLACE "-fno-exceptions" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+STRING(REPLACE "-fno-implicit-templates" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
+#LINK_DIRECTORIES(/home/psergey/cassandra/thrift/lib)
+
+MYSQL_ADD_PLUGIN(cassandra ${cassandra_sources} STORAGE_ENGINE LINK_LIBRARIES thrift)
+# was: STORAGE_ENGINE MANDATORY 

storage/cassandra/cassandra_se.cc

+
+// Cassandra includes:
+#include <inttypes.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "Thrift.h"
+#include "transport/TSocket.h"
+#include "transport/TTransport.h"
+#include "transport/TBufferTransports.h"
+#include "protocol/TProtocol.h"
+#include "protocol/TBinaryProtocol.h"
+#include "gen-cpp/Cassandra.h"
+// cassandra includes end
+
+#include "cassandra_se.h"
+
+using namespace std;
+using namespace apache::thrift;
+using namespace apache::thrift::transport;
+using namespace apache::thrift::protocol;
+using namespace org::apache::cassandra;
+
+void Cassandra_se_interface::print_error(const char *format, ...)
+{
+  va_list ap;
+  va_start(ap, format);
+  // it's not a problem if output was truncated
+  vsnprintf(err_buffer, sizeof(err_buffer), format, ap);
+  va_end(ap);
+}
+
+/*
+  Implementation of connection to one Cassandra column family (ie., table)
+*/
+class Cassandra_se_impl: public Cassandra_se_interface
+{
+  CassandraClient *cass; /* Connection to cassandra */
+  ConsistencyLevel::type cur_consistency_level;
+
+  std::string column_family;
+  std::string keyspace;
+  
+  /* DDL checks */
+  KsDef ks_def; /* KeySpace we're using (TODO: put this in table->share) */
+  CfDef cf_def; /* Column family we're using (TODO: put in table->share)*/
+  std::vector<ColumnDef>::iterator column_ddl_it;
+
+  /* The list that was returned by the last key lookup */
+  std::vector<ColumnOrSuperColumn> col_supercol_vec;
+
+public:
+  
+  Cassandra_se_impl() : cass(NULL) {}
+  virtual ~Cassandra_se_impl(){ delete cass; }
+  
+  bool connect(const char *host, const char *keyspace);
+
+  virtual void set_column_family(const char *cfname)
+  {
+    column_family.assign(cfname); 
+  }
+
+  virtual bool insert(NameAndValue *fields);
+  virtual bool get_slice(char *key, size_t key_len, NameAndValue *row, bool *found);
+   
+
+  /* Functions to enumerate ColumnFamily's DDL data */
+  bool setup_ddl_checks();
+  void first_ddl_column();
+  bool next_ddl_column(char **name, int *name_len, char **value, int *value_len);
+};
+
+
+Cassandra_se_interface *get_cassandra_se()
+{
+  return new Cassandra_se_impl;
+}
+
+#define CASS_TRY(x) try { \
+     x;  \
+  }catch(TTransportException te){ \
+    print_error("%s [%d]", te.what(), te.getType()); \
+  }catch(InvalidRequestException ire){ \
+    print_error("%s [%s]", ire.what(), ire.why.c_str()); \
+  }catch(NotFoundException nfe){ \
+    print_error("%s", nfe.what()); \
+  } catch(...) { \
+    print_error("Unknown Exception"); \
+  }
+
+bool Cassandra_se_impl::connect(const char *host, const char *keyspace_arg)
+{
+  bool res= true;
+  
+  keyspace.assign(keyspace_arg);
+  
+  try {
+    boost::shared_ptr<TTransport> socket = 
+      boost::shared_ptr<TSocket>(new TSocket(host, 9160));
+    boost::shared_ptr<TTransport> tr = 
+      boost::shared_ptr<TFramedTransport>(new TFramedTransport (socket));
+    boost::shared_ptr<TProtocol> p = 
+      boost::shared_ptr<TBinaryProtocol>(new TBinaryProtocol(tr));
+    
+    cass= new CassandraClient(p);
+    tr->open();
+    cass->set_keyspace(keyspace_arg);
+
+    res= false; // success
+  }catch(TTransportException te){
+    print_error("%s [%d]", te.what(), te.getType());
+  }catch(InvalidRequestException ire){
+    print_error("%s [%s]", ire.what(), ire.why.c_str());
+  }catch(NotFoundException nfe){
+    print_error("%s", nfe.what());
+  }
+  catch(...) {
+    print_error("Unknown Exception");
+  }
+
+  // For now:
+  cur_consistency_level= ConsistencyLevel::ONE;
+
+  if (setup_ddl_checks())
+    res= true;
+  return res;
+}
+
+
+bool Cassandra_se_impl::setup_ddl_checks()
+{
+  try {
+    cass->describe_keyspace(ks_def, keyspace);
+
+    std::vector<CfDef>::iterator it;
+    for (it= ks_def.cf_defs.begin(); it < ks_def.cf_defs.end(); it++)
+    {
+      cf_def= *it;
+      if (!cf_def.name.compare(column_family))
+        return false;
+    }
+
+    print_error("describe_keyspace() didn't return our column family");
+
+  } catch (InvalidRequestException ire) {
+    print_error("%s [%s]", ire.what(), ire.why.c_str());
+  } catch (NotFoundException nfe) {
+    print_error("keyspace not found: %s", nfe.what());
+  }
+  return true;
+}
+
+
+void Cassandra_se_impl::first_ddl_column()
+{
+  column_ddl_it= cf_def.column_metadata.begin();
+}
+
+
+bool Cassandra_se_impl::next_ddl_column(char **name, int *name_len, 
+                                        char **type, int *type_len)
+{
+  if (column_ddl_it == cf_def.column_metadata.end())
+    return true;
+
+  *name= (char*)(*column_ddl_it).name.c_str();
+  *name_len= (*column_ddl_it).name.length();
+
+  *type= (char*)(*column_ddl_it).validation_class.c_str();
+  *type_len= (*column_ddl_it).validation_class.length();
+
+  column_ddl_it++;
+  return false;
+}
+
+
+bool Cassandra_se_impl::insert(NameAndValue *fields)
+{
+  ColumnParent cparent;
+  cparent.column_family= column_family;
+  
+  Column c;
+  struct timeval td;
+  gettimeofday(&td, NULL);
+  int64_t ms = td.tv_sec;
+  ms = ms * 1000;
+  int64_t usec = td.tv_usec;
+  usec = usec / 1000;
+  ms += usec;
+  c.timestamp = ms;
+  c.__isset.timestamp = true;
+
+  std::string key;
+  key.assign(fields->value, fields->value_len);
+  fields++;
+
+  bool res= false;
+  try {
+    /* TODO: switch to batch_mutate(). Or, even to CQL? */
+
+    // TODO: what should INSERT table (co1, col2) VALUES ('foo', 'bar') mean?
+    //       in SQL, it sets all columns.. what should it mean here? can we have
+    //       it to work only for specified columns? (if yes, what do for
+    //       VALUES()?)    
+    c.__isset.value= true;
+    for(;fields->name; fields++)
+    {
+      c.name.assign(fields->name);
+      c.value.assign(fields->value, fields->value_len);
+      cass->insert(key, cparent, c, ConsistencyLevel::ONE);
+    }
+
+  } catch (...) {
+   res= true;
+  }
+  return res;
+}
+
+
+bool Cassandra_se_impl::get_slice(char *key, size_t key_len, NameAndValue *row, bool *found)
+{
+  ColumnParent cparent;
+  cparent.column_family= column_family;
+
+  std::string rowkey_str;
+  rowkey_str.assign(key, key_len);
+
+  SlicePredicate slice_pred;
+  SliceRange sr;
+  sr.start = "";
+  sr.finish = "";
+  slice_pred.__set_slice_range(sr);
+
+  try {
+    std::vector<ColumnOrSuperColumn> &res= col_supercol_vec;
+    cass->get_slice(res, rowkey_str, cparent, slice_pred, ConsistencyLevel::ONE);
+    *found= true;
+
+    std::vector<ColumnOrSuperColumn>::iterator it;
+    if (res.size() == 0)
+    {
+      /* 
+        No columns found. Cassandra doesn't allow records without any column =>
+        this means the seach key doesn't exist
+      */
+      *found= false;
+      return false;
+    }
+    for (it= res.begin(); it < res.end(); it++)
+    {
+      ColumnOrSuperColumn cs= *it;
+      if (!cs.__isset.column)
+        return true;
+      row->name= (char*)cs.column.name.c_str();
+      row->value= (char*)cs.column.value.c_str();
+      row->value_len= cs.column.value.length();
+      row++;
+    }
+    row->name= NULL;
+  } catch (InvalidRequestException ire) {
+    return true;
+  } catch (UnavailableException ue) {
+    return true;
+  } catch (TimedOutException te) {
+    return true;
+  }
+  return false;
+}

storage/cassandra/cassandra_se.h

+
+/*
+  This file is a "bridge" interface between cassandra+Thrift and MariaDB.
+
+  It is #included by both sides, so it must itself include neither (including
+  both together causes compile errors due to conflicts).
+*/
+
+
+/* 
+  Storage for (name,value) pairs. name==NULL means 'non-object'.
+
+  This should be used for 
+  - shipping data from sql to cassandra for INSERTs 
+  - shipping data from cassandra to SQL for record reads.
+
+*/
+class NameAndValue
+{
+public:
+  char *name;
+  char *value;
+  size_t value_len;
+};
+
+/*
+  Interface to one cassandra column family, i.e. one 'table'
+*/
+class Cassandra_se_interface
+{
+public:
+  Cassandra_se_interface() { err_buffer[0]=0; }
+  
+  virtual ~Cassandra_se_interface(){};
+  /* Init */
+  virtual bool connect(const char *host, const char *port)=0;
+  virtual void set_column_family(const char *cfname) = 0;
+   
+  /* Check underlying DDL */
+  virtual bool setup_ddl_checks()=0;
+  virtual void first_ddl_column()=0;
+  virtual bool next_ddl_column(char **name, int *name_len, char **value, 
+                               int *value_len)=0;
+
+  /* Writes */
+  virtual bool insert(NameAndValue *fields)=0;
+
+  /* Reads */
+  virtual bool get_slice(char *key, size_t key_len, NameAndValue *row, bool *found)=0 ;
+
+  /* Passing error messages up to ha_cassandra */
+  char err_buffer[512];
+  const char *error_str() { return err_buffer; }
+  void print_error(const char *format, ...);
+};
+
+Cassandra_se_interface *get_cassandra_se();

storage/cassandra/gen-cpp/Cassandra_server.skeleton.cpp

+// This autogenerated skeleton file illustrates how to build a server.
+// You should copy it to another filename to avoid overwriting it.
+
+#include "Cassandra.h"
+#include <protocol/TBinaryProtocol.h>
+#include <server/TSimpleServer.h>
+#include <transport/TServerSocket.h>
+#include <transport/TBufferTransports.h>
+
+using namespace ::apache::thrift;
+using namespace ::apache::thrift::protocol;
+using namespace ::apache::thrift::transport;
+using namespace ::apache::thrift::server;
+
+using boost::shared_ptr;
+
+using namespace  ::org::apache::cassandra;
+
+class CassandraHandler : virtual public CassandraIf {
+ public:
+  CassandraHandler() {
+    // Your initialization goes here
+  }
+
+  void login(const AuthenticationRequest& auth_request) {
+    // Your implementation goes here
+    printf("login\n");
+  }
+
+  void set_keyspace(const std::string& keyspace) {
+    // Your implementation goes here
+    printf("set_keyspace\n");
+  }
+
+  void get(ColumnOrSuperColumn& _return, const std::string& key, const ColumnPath& column_path, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get\n");
+  }
+
+  void get_slice(std::vector<ColumnOrSuperColumn> & _return, const std::string& key, const ColumnParent& column_parent, const SlicePredicate& predicate, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get_slice\n");
+  }
+
+  int32_t get_count(const std::string& key, const ColumnParent& column_parent, const SlicePredicate& predicate, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get_count\n");
+  }
+
+  void multiget_slice(std::map<std::string, std::vector<ColumnOrSuperColumn> > & _return, const std::vector<std::string> & keys, const ColumnParent& column_parent, const SlicePredicate& predicate, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("multiget_slice\n");
+  }
+
+  void multiget_count(std::map<std::string, int32_t> & _return, const std::vector<std::string> & keys, const ColumnParent& column_parent, const SlicePredicate& predicate, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("multiget_count\n");
+  }
+
+  void get_range_slices(std::vector<KeySlice> & _return, const ColumnParent& column_parent, const SlicePredicate& predicate, const KeyRange& range, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get_range_slices\n");
+  }
+
+  void get_paged_slice(std::vector<KeySlice> & _return, const std::string& column_family, const KeyRange& range, const std::string& start_column, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get_paged_slice\n");
+  }
+
+  void get_indexed_slices(std::vector<KeySlice> & _return, const ColumnParent& column_parent, const IndexClause& index_clause, const SlicePredicate& column_predicate, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("get_indexed_slices\n");
+  }
+
+  void insert(const std::string& key, const ColumnParent& column_parent, const Column& column, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("insert\n");
+  }
+
+  void add(const std::string& key, const ColumnParent& column_parent, const CounterColumn& column, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("add\n");
+  }
+
+  void remove(const std::string& key, const ColumnPath& column_path, const int64_t timestamp, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("remove\n");
+  }
+
+  void remove_counter(const std::string& key, const ColumnPath& path, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("remove_counter\n");
+  }
+
+  void batch_mutate(const std::map<std::string, std::map<std::string, std::vector<Mutation> > > & mutation_map, const ConsistencyLevel::type consistency_level) {
+    // Your implementation goes here
+    printf("batch_mutate\n");
+  }
+
+  void truncate(const std::string& cfname) {
+    // Your implementation goes here
+    printf("truncate\n");
+  }
+
+  void describe_schema_versions(std::map<std::string, std::vector<std::string> > & _return) {
+    // Your implementation goes here
+    printf("describe_schema_versions\n");
+  }
+
+  void describe_keyspaces(std::vector<KsDef> & _return) {
+    // Your implementation goes here
+    printf("describe_keyspaces\n");
+  }
+
+  void describe_cluster_name(std::string& _return) {
+    // Your implementation goes here
+    printf("describe_cluster_name\n");
+  }
+
+  void describe_version(std::string& _return) {
+    // Your implementation goes here
+    printf("describe_version\n");
+  }
+
+  void describe_ring(std::vector<TokenRange> & _return, const std::string& keyspace) {
+    // Your implementation goes here
+    printf("describe_ring\n");
+  }
+
+  void describe_token_map(std::map<std::string, std::string> & _return) {
+    // Your implementation goes here
+    printf("describe_token_map\n");
+  }
+
+  void describe_partitioner(std::string& _return) {
+    // Your implementation goes here
+    printf("describe_partitioner\n");
+  }
+
+  void describe_snitch(std::string& _return) {
+    // Your implementation goes here
+    printf("describe_snitch\n");
+  }
+
+  void describe_keyspace(KsDef& _return, const std::string& keyspace) {
+    // Your implementation goes here
+    printf("describe_keyspace\n");
+  }
+
+  void describe_splits(std::vector<std::string> & _return, const std::string& cfName, const std::string& start_token, const std::string& end_token, const int32_t keys_per_split) {
+    // Your implementation goes here
+    printf("describe_splits\n");
+  }
+
+  void system_add_column_family(std::string& _return, const CfDef& cf_def) {
+    // Your implementation goes here
+    printf("system_add_column_family\n");
+  }
+
+  void system_drop_column_family(std::string& _return, const std::string& column_family) {
+    // Your implementation goes here
+    printf("system_drop_column_family\n");
+  }
+
+  void system_add_keyspace(std::string& _return, const KsDef& ks_def) {
+    // Your implementation goes here
+    printf("system_add_keyspace\n");
+  }
+
+  void system_drop_keyspace(std::string& _return, const std::string& keyspace) {
+    // Your implementation goes here
+    printf("system_drop_keyspace\n");
+  }
+
+  void system_update_keyspace(std::string& _return, const KsDef& ks_def) {
+    // Your implementation goes here
+    printf("system_update_keyspace\n");
+  }
+
+  void system_update_column_family(std::string& _return, const CfDef& cf_def) {
+    // Your implementation goes here
+    printf("system_update_column_family\n");
+  }
+
+  void execute_cql_query(CqlResult& _return, const std::string& query, const Compression::type compression) {
+    // Your implementation goes here
+    printf("execute_cql_query\n");
+  }
+
+  void prepare_cql_query(CqlPreparedResult& _return, const std::string& query, const Compression::type compression) {
+    // Your implementation goes here
+    printf("prepare_cql_query\n");
+  }
+
+  void execute_prepared_cql_query(CqlResult& _return, const int32_t itemId, const std::vector<std::string> & values) {
+    // Your implementation goes here
+    printf("execute_prepared_cql_query\n");
+  }
+
+  void set_cql_version(const std::string& version) {
+    // Your implementation goes here
+    printf("set_cql_version\n");
+  }
+
+};
+
+int main(int argc, char **argv) {
+  int port = 9090;
+  shared_ptr<CassandraHandler> handler(new CassandraHandler());
+  shared_ptr<TProcessor> processor(new CassandraProcessor(handler));
+  shared_ptr<TServerTransport> serverTransport(new TServerSocket(port));
+  shared_ptr<TTransportFactory> transportFactory(new TBufferedTransportFactory());
+  shared_ptr<TProtocolFactory> protocolFactory(new TBinaryProtocolFactory());
+
+  TSimpleServer server(processor, serverTransport, transportFactory, protocolFactory);
+  server.serve();
+  return 0;
+}
+

storage/cassandra/gen-cpp/cassandra_constants.cpp

+/**
+ * Autogenerated by Thrift Compiler (0.8.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+#include "cassandra_constants.h"
+
+namespace org { namespace apache { namespace cassandra {
+
+const cassandraConstants g_cassandra_constants;
+
+cassandraConstants::cassandraConstants() {
+  cassandra_const_VERSION = "19.32.0";
+}
+
+}}} // namespace
+

storage/cassandra/gen-cpp/cassandra_constants.h

+/**
+ * Autogenerated by Thrift Compiler (0.8.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+#ifndef cassandra_CONSTANTS_H
+#define cassandra_CONSTANTS_H
+
+#include "cassandra_types.h"
+
+namespace org { namespace apache { namespace cassandra {
+
+class cassandraConstants {
+ public:
+  cassandraConstants();
+
+//  std::string VERSION;
+  char*  cassandra_const_VERSION;
+};
+
+extern const cassandraConstants g_cassandra_constants;
+
+}}} // namespace
+
+#endif

storage/cassandra/gen-cpp/cassandra_types.h

+/**
+ * Autogenerated by Thrift Compiler (0.8.0)
+ *
+ * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
+ *  @generated
+ */
+#ifndef cassandra_TYPES_H
+#define cassandra_TYPES_H
+
+#include <inttypes.h>
+#include <netinet/in.h>
+
+#include <Thrift.h>
+#include <TApplicationException.h>
+#include <protocol/TProtocol.h>
+#include <transport/TTransport.h>
+
+
+
+namespace org { namespace apache { namespace cassandra {
+
+struct ConsistencyLevel {
+  enum type {
+    ONE = 1,
+    QUORUM = 2,
+    LOCAL_QUORUM = 3,
+    EACH_QUORUM = 4,
+    ALL = 5,
+    ANY = 6,
+    TWO = 7,
+    THREE = 8
+  };
+};
+
+extern const std::map<int, const char*> _ConsistencyLevel_VALUES_TO_NAMES;
+
+struct IndexOperator {
+  enum type {
+    EQ = 0,
+    GTE = 1,
+    GT = 2,
+    LTE = 3,
+    LT = 4
+  };
+};
+
+extern const std::map<int, const char*> _IndexOperator_VALUES_TO_NAMES;
+
+struct IndexType {
+  enum type {
+    KEYS = 0,
+    CUSTOM = 1
+  };
+};
+
+extern const std::map<int, const char*> _IndexType_VALUES_TO_NAMES;
+
+struct Compression {
+  enum type {
+    GZIP = 1,
+    NONE = 2
+  };
+};
+
+extern const std::map<int, const char*> _Compression_VALUES_TO_NAMES;
+
+struct CqlResultType {
+  enum type {
+    ROWS = 1,
+    VOID = 2,
+    INT = 3
+  };
+};
+
+extern const std::map<int, const char*> _CqlResultType_VALUES_TO_NAMES;
+
+typedef struct _Column__isset {
+  _Column__isset() : value(false), timestamp(false), ttl(false) {}
+  bool value;
+  bool timestamp;
+  bool ttl;
+} _Column__isset;
+
+class Column {
+ public:
+
+  static const char* ascii_fingerprint; // = "3EE0E1C5C844001B62F08125068292CC";
+  static const uint8_t binary_fingerprint[16]; // = {0x3E,0xE0,0xE1,0xC5,0xC8,0x44,0x00,0x1B,0x62,0xF0,0x81,0x25,0x06,0x82,0x92,0xCC};
+
+  Column() : name(""), value(""), timestamp(0), ttl(0) {
+  }
+
+  virtual ~Column() throw() {}
+
+  std::string name;
+  std::string value;
+  int64_t timestamp;
+  int32_t ttl;
+
+  _Column__isset __isset;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_value(const std::string& val) {
+    value = val;
+    __isset.value = true;
+  }
+
+  void __set_timestamp(const int64_t val) {
+    timestamp = val;
+    __isset.timestamp = true;
+  }
+
+  void __set_ttl(const int32_t val) {
+    ttl = val;
+    __isset.ttl = true;
+  }
+
+  bool operator == (const Column & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (__isset.value != rhs.__isset.value)
+      return false;
+    else if (__isset.value && !(value == rhs.value))
+      return false;
+    if (__isset.timestamp != rhs.__isset.timestamp)
+      return false;
+    else if (__isset.timestamp && !(timestamp == rhs.timestamp))
+      return false;
+    if (__isset.ttl != rhs.__isset.ttl)
+      return false;
+    else if (__isset.ttl && !(ttl == rhs.ttl))
+      return false;
+    return true;
+  }
+  bool operator != (const Column &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const Column & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class SuperColumn {
+ public:
+
+  static const char* ascii_fingerprint; // = "470EFC558004E98D92D604898305C04E";
+  static const uint8_t binary_fingerprint[16]; // = {0x47,0x0E,0xFC,0x55,0x80,0x04,0xE9,0x8D,0x92,0xD6,0x04,0x89,0x83,0x05,0xC0,0x4E};
+
+  SuperColumn() : name("") {
+  }
+
+  virtual ~SuperColumn() throw() {}
+
+  std::string name;
+  std::vector<Column>  columns;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_columns(const std::vector<Column> & val) {
+    columns = val;
+  }
+
+  bool operator == (const SuperColumn & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (!(columns == rhs.columns))
+      return false;
+    return true;
+  }
+  bool operator != (const SuperColumn &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const SuperColumn & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class CounterColumn {
+ public:
+
+  static const char* ascii_fingerprint; // = "1CCCF6FC31CFD1D61BBBB1BAF3590620";
+  static const uint8_t binary_fingerprint[16]; // = {0x1C,0xCC,0xF6,0xFC,0x31,0xCF,0xD1,0xD6,0x1B,0xBB,0xB1,0xBA,0xF3,0x59,0x06,0x20};
+
+  CounterColumn() : name(""), value(0) {
+  }
+
+  virtual ~CounterColumn() throw() {}
+
+  std::string name;
+  int64_t value;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_value(const int64_t val) {
+    value = val;
+  }
+
+  bool operator == (const CounterColumn & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (!(value == rhs.value))
+      return false;
+    return true;
+  }
+  bool operator != (const CounterColumn &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CounterColumn & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class CounterSuperColumn {
+ public:
+
+  static const char* ascii_fingerprint; // = "CD4C8C4BF7753E46DE417CDE369343A4";
+  static const uint8_t binary_fingerprint[16]; // = {0xCD,0x4C,0x8C,0x4B,0xF7,0x75,0x3E,0x46,0xDE,0x41,0x7C,0xDE,0x36,0x93,0x43,0xA4};
+
+  CounterSuperColumn() : name("") {
+  }
+
+  virtual ~CounterSuperColumn() throw() {}
+
+  std::string name;
+  std::vector<CounterColumn>  columns;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_columns(const std::vector<CounterColumn> & val) {
+    columns = val;
+  }
+
+  bool operator == (const CounterSuperColumn & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (!(columns == rhs.columns))
+      return false;
+    return true;
+  }
+  bool operator != (const CounterSuperColumn &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CounterSuperColumn & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _ColumnOrSuperColumn__isset {
+  _ColumnOrSuperColumn__isset() : column(false), super_column(false), counter_column(false), counter_super_column(false) {}
+  bool column;
+  bool super_column;
+  bool counter_column;
+  bool counter_super_column;
+} _ColumnOrSuperColumn__isset;
+
+class ColumnOrSuperColumn {
+ public:
+
+  static const char* ascii_fingerprint; // = "2B34AC9E80F1DAA3A2A63B1AB1841E61";
+  static const uint8_t binary_fingerprint[16]; // = {0x2B,0x34,0xAC,0x9E,0x80,0xF1,0xDA,0xA3,0xA2,0xA6,0x3B,0x1A,0xB1,0x84,0x1E,0x61};
+
+  ColumnOrSuperColumn() {
+  }
+
+  virtual ~ColumnOrSuperColumn() throw() {}
+
+  Column column;
+  SuperColumn super_column;
+  CounterColumn counter_column;
+  CounterSuperColumn counter_super_column;
+
+  _ColumnOrSuperColumn__isset __isset;
+
+  void __set_column(const Column& val) {
+    column = val;
+    __isset.column = true;
+  }
+
+  void __set_super_column(const SuperColumn& val) {
+    super_column = val;
+    __isset.super_column = true;
+  }
+
+  void __set_counter_column(const CounterColumn& val) {
+    counter_column = val;
+    __isset.counter_column = true;
+  }
+
+  void __set_counter_super_column(const CounterSuperColumn& val) {
+    counter_super_column = val;
+    __isset.counter_super_column = true;
+  }
+
+  bool operator == (const ColumnOrSuperColumn & rhs) const
+  {
+    if (__isset.column != rhs.__isset.column)
+      return false;
+    else if (__isset.column && !(column == rhs.column))
+      return false;
+    if (__isset.super_column != rhs.__isset.super_column)
+      return false;
+    else if (__isset.super_column && !(super_column == rhs.super_column))
+      return false;
+    if (__isset.counter_column != rhs.__isset.counter_column)
+      return false;
+    else if (__isset.counter_column && !(counter_column == rhs.counter_column))
+      return false;
+    if (__isset.counter_super_column != rhs.__isset.counter_super_column)
+      return false;
+    else if (__isset.counter_super_column && !(counter_super_column == rhs.counter_super_column))
+      return false;
+    return true;
+  }
+  bool operator != (const ColumnOrSuperColumn &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const ColumnOrSuperColumn & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class NotFoundException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "99914B932BD37A50B983C5E7C90AE93B";
+  static const uint8_t binary_fingerprint[16]; // = {0x99,0x91,0x4B,0x93,0x2B,0xD3,0x7A,0x50,0xB9,0x83,0xC5,0xE7,0xC9,0x0A,0xE9,0x3B};
+
+  NotFoundException() {
+  }
+
+  virtual ~NotFoundException() throw() {}
+
+
+  bool operator == (const NotFoundException & /* rhs */) const
+  {
+    return true;
+  }
+  bool operator != (const NotFoundException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const NotFoundException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class InvalidRequestException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "EFB929595D312AC8F305D5A794CFEDA1";
+  static const uint8_t binary_fingerprint[16]; // = {0xEF,0xB9,0x29,0x59,0x5D,0x31,0x2A,0xC8,0xF3,0x05,0xD5,0xA7,0x94,0xCF,0xED,0xA1};
+
+  InvalidRequestException() : why("") {
+  }
+
+  virtual ~InvalidRequestException() throw() {}
+
+  std::string why;
+
+  void __set_why(const std::string& val) {
+    why = val;
+  }
+
+  bool operator == (const InvalidRequestException & rhs) const
+  {
+    if (!(why == rhs.why))
+      return false;
+    return true;
+  }
+  bool operator != (const InvalidRequestException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const InvalidRequestException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class UnavailableException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "99914B932BD37A50B983C5E7C90AE93B";
+  static const uint8_t binary_fingerprint[16]; // = {0x99,0x91,0x4B,0x93,0x2B,0xD3,0x7A,0x50,0xB9,0x83,0xC5,0xE7,0xC9,0x0A,0xE9,0x3B};
+
+  UnavailableException() {
+  }
+
+  virtual ~UnavailableException() throw() {}
+
+
+  bool operator == (const UnavailableException & /* rhs */) const
+  {
+    return true;
+  }
+  bool operator != (const UnavailableException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const UnavailableException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class TimedOutException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "99914B932BD37A50B983C5E7C90AE93B";
+  static const uint8_t binary_fingerprint[16]; // = {0x99,0x91,0x4B,0x93,0x2B,0xD3,0x7A,0x50,0xB9,0x83,0xC5,0xE7,0xC9,0x0A,0xE9,0x3B};
+
+  TimedOutException() {
+  }
+
+  virtual ~TimedOutException() throw() {}
+
+
+  bool operator == (const TimedOutException & /* rhs */) const
+  {
+    return true;
+  }
+  bool operator != (const TimedOutException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const TimedOutException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class AuthenticationException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "EFB929595D312AC8F305D5A794CFEDA1";
+  static const uint8_t binary_fingerprint[16]; // = {0xEF,0xB9,0x29,0x59,0x5D,0x31,0x2A,0xC8,0xF3,0x05,0xD5,0xA7,0x94,0xCF,0xED,0xA1};
+
+  AuthenticationException() : why("") {
+  }
+
+  virtual ~AuthenticationException() throw() {}
+
+  std::string why;
+
+  void __set_why(const std::string& val) {
+    why = val;
+  }
+
+  bool operator == (const AuthenticationException & rhs) const
+  {
+    if (!(why == rhs.why))
+      return false;
+    return true;
+  }
+  bool operator != (const AuthenticationException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const AuthenticationException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class AuthorizationException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "EFB929595D312AC8F305D5A794CFEDA1";
+  static const uint8_t binary_fingerprint[16]; // = {0xEF,0xB9,0x29,0x59,0x5D,0x31,0x2A,0xC8,0xF3,0x05,0xD5,0xA7,0x94,0xCF,0xED,0xA1};
+
+  AuthorizationException() : why("") {
+  }
+
+  virtual ~AuthorizationException() throw() {}
+
+  std::string why;
+
+  void __set_why(const std::string& val) {
+    why = val;
+  }
+
+  bool operator == (const AuthorizationException & rhs) const
+  {
+    if (!(why == rhs.why))
+      return false;
+    return true;
+  }
+  bool operator != (const AuthorizationException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const AuthorizationException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class SchemaDisagreementException : public ::apache::thrift::TException {
+ public:
+
+  static const char* ascii_fingerprint; // = "99914B932BD37A50B983C5E7C90AE93B";
+  static const uint8_t binary_fingerprint[16]; // = {0x99,0x91,0x4B,0x93,0x2B,0xD3,0x7A,0x50,0xB9,0x83,0xC5,0xE7,0xC9,0x0A,0xE9,0x3B};
+
+  SchemaDisagreementException() {
+  }
+
+  virtual ~SchemaDisagreementException() throw() {}
+
+
+  bool operator == (const SchemaDisagreementException & /* rhs */) const
+  {
+    return true;
+  }
+  bool operator != (const SchemaDisagreementException &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const SchemaDisagreementException & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _ColumnParent__isset {
+  _ColumnParent__isset() : super_column(false) {}
+  bool super_column;
+} _ColumnParent__isset;
+
+class ColumnParent {
+ public:
+
+  static const char* ascii_fingerprint; // = "0A13AE61181713A4100DFFB3EC293822";
+  static const uint8_t binary_fingerprint[16]; // = {0x0A,0x13,0xAE,0x61,0x18,0x17,0x13,0xA4,0x10,0x0D,0xFF,0xB3,0xEC,0x29,0x38,0x22};
+
+  ColumnParent() : column_family(""), super_column("") {
+  }
+
+  virtual ~ColumnParent() throw() {}
+
+  std::string column_family;
+  std::string super_column;
+
+  _ColumnParent__isset __isset;
+
+  void __set_column_family(const std::string& val) {
+    column_family = val;
+  }
+
+  void __set_super_column(const std::string& val) {
+    super_column = val;
+    __isset.super_column = true;
+  }
+
+  bool operator == (const ColumnParent & rhs) const
+  {
+    if (!(column_family == rhs.column_family))
+      return false;
+    if (__isset.super_column != rhs.__isset.super_column)
+      return false;
+    else if (__isset.super_column && !(super_column == rhs.super_column))
+      return false;
+    return true;
+  }
+  bool operator != (const ColumnParent &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const ColumnParent & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _ColumnPath__isset {
+  _ColumnPath__isset() : super_column(false), column(false) {}
+  bool super_column;
+  bool column;
+} _ColumnPath__isset;
+
+class ColumnPath {
+ public:
+
+  static const char* ascii_fingerprint; // = "606212895BCF63C757913CF35AEB3462";
+  static const uint8_t binary_fingerprint[16]; // = {0x60,0x62,0x12,0x89,0x5B,0xCF,0x63,0xC7,0x57,0x91,0x3C,0xF3,0x5A,0xEB,0x34,0x62};
+
+  ColumnPath() : column_family(""), super_column(""), column("") {
+  }
+
+  virtual ~ColumnPath() throw() {}
+
+  std::string column_family;
+  std::string super_column;
+  std::string column;
+
+  _ColumnPath__isset __isset;
+
+  void __set_column_family(const std::string& val) {
+    column_family = val;
+  }
+
+  void __set_super_column(const std::string& val) {
+    super_column = val;
+    __isset.super_column = true;
+  }
+
+  void __set_column(const std::string& val) {
+    column = val;
+    __isset.column = true;
+  }
+
+  bool operator == (const ColumnPath & rhs) const
+  {
+    if (!(column_family == rhs.column_family))
+      return false;
+    if (__isset.super_column != rhs.__isset.super_column)
+      return false;
+    else if (__isset.super_column && !(super_column == rhs.super_column))
+      return false;
+    if (__isset.column != rhs.__isset.column)
+      return false;
+    else if (__isset.column && !(column == rhs.column))
+      return false;
+    return true;
+  }
+  bool operator != (const ColumnPath &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const ColumnPath & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class SliceRange {
+ public:
+
+  static const char* ascii_fingerprint; // = "184D24C9A0B8D4415E234DB649CAE740";
+  static const uint8_t binary_fingerprint[16]; // = {0x18,0x4D,0x24,0xC9,0xA0,0xB8,0xD4,0x41,0x5E,0x23,0x4D,0xB6,0x49,0xCA,0xE7,0x40};
+
+  SliceRange() : start(""), finish(""), reversed(false), count(100) {
+  }
+
+  virtual ~SliceRange() throw() {}
+
+  std::string start;
+  std::string finish;
+  bool reversed;
+  int32_t count;
+
+  void __set_start(const std::string& val) {
+    start = val;
+  }
+
+  void __set_finish(const std::string& val) {
+    finish = val;
+  }
+
+  void __set_reversed(const bool val) {
+    reversed = val;
+  }
+
+  void __set_count(const int32_t val) {
+    count = val;
+  }
+
+  bool operator == (const SliceRange & rhs) const
+  {
+    if (!(start == rhs.start))
+      return false;
+    if (!(finish == rhs.finish))
+      return false;
+    if (!(reversed == rhs.reversed))
+      return false;
+    if (!(count == rhs.count))
+      return false;
+    return true;
+  }
+  bool operator != (const SliceRange &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const SliceRange & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _SlicePredicate__isset {
+  _SlicePredicate__isset() : column_names(false), slice_range(false) {}
+  bool column_names;
+  bool slice_range;
+} _SlicePredicate__isset;
+
+class SlicePredicate {
+ public:
+
+  static const char* ascii_fingerprint; // = "F59D1D81C17DFFAF09988BF1C9CE5E27";
+  static const uint8_t binary_fingerprint[16]; // = {0xF5,0x9D,0x1D,0x81,0xC1,0x7D,0xFF,0xAF,0x09,0x98,0x8B,0xF1,0xC9,0xCE,0x5E,0x27};
+
+  SlicePredicate() {
+  }
+
+  virtual ~SlicePredicate() throw() {}
+
+  std::vector<std::string>  column_names;
+  SliceRange slice_range;
+
+  _SlicePredicate__isset __isset;
+
+  void __set_column_names(const std::vector<std::string> & val) {
+    column_names = val;
+    __isset.column_names = true;
+  }
+
+  void __set_slice_range(const SliceRange& val) {
+    slice_range = val;
+    __isset.slice_range = true;
+  }
+
+  bool operator == (const SlicePredicate & rhs) const
+  {
+    if (__isset.column_names != rhs.__isset.column_names)
+      return false;
+    else if (__isset.column_names && !(column_names == rhs.column_names))
+      return false;
+    if (__isset.slice_range != rhs.__isset.slice_range)
+      return false;
+    else if (__isset.slice_range && !(slice_range == rhs.slice_range))
+      return false;
+    return true;
+  }
+  bool operator != (const SlicePredicate &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const SlicePredicate & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class IndexExpression {
+ public:
+
+  static const char* ascii_fingerprint; // = "D9F4CFE2F293A8B1052FD3031DD2C847";
+  static const uint8_t binary_fingerprint[16]; // = {0xD9,0xF4,0xCF,0xE2,0xF2,0x93,0xA8,0xB1,0x05,0x2F,0xD3,0x03,0x1D,0xD2,0xC8,0x47};
+
+  IndexExpression() : column_name(""), op((IndexOperator::type)0), value("") {
+  }
+
+  virtual ~IndexExpression() throw() {}
+
+  std::string column_name;
+  IndexOperator::type op;
+  std::string value;
+
+  void __set_column_name(const std::string& val) {
+    column_name = val;
+  }
+
+  void __set_op(const IndexOperator::type val) {
+    op = val;
+  }
+
+  void __set_value(const std::string& val) {
+    value = val;
+  }
+
+  bool operator == (const IndexExpression & rhs) const
+  {
+    if (!(column_name == rhs.column_name))
+      return false;
+    if (!(op == rhs.op))
+      return false;
+    if (!(value == rhs.value))
+      return false;
+    return true;
+  }
+  bool operator != (const IndexExpression &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const IndexExpression & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class IndexClause {
+ public:
+
+  static const char* ascii_fingerprint; // = "9B551B9AB86120B0EEA9005C77FD3C1F";
+  static const uint8_t binary_fingerprint[16]; // = {0x9B,0x55,0x1B,0x9A,0xB8,0x61,0x20,0xB0,0xEE,0xA9,0x00,0x5C,0x77,0xFD,0x3C,0x1F};
+
+  IndexClause() : start_key(""), count(100) {
+  }
+
+  virtual ~IndexClause() throw() {}
+
+  std::vector<IndexExpression>  expressions;
+  std::string start_key;
+  int32_t count;
+
+  void __set_expressions(const std::vector<IndexExpression> & val) {
+    expressions = val;
+  }
+
+  void __set_start_key(const std::string& val) {
+    start_key = val;
+  }
+
+  void __set_count(const int32_t val) {
+    count = val;
+  }
+
+  bool operator == (const IndexClause & rhs) const
+  {
+    if (!(expressions == rhs.expressions))
+      return false;
+    if (!(start_key == rhs.start_key))
+      return false;
+    if (!(count == rhs.count))
+      return false;
+    return true;
+  }
+  bool operator != (const IndexClause &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const IndexClause & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _KeyRange__isset {
+  _KeyRange__isset() : start_key(false), end_key(false), start_token(false), end_token(false), row_filter(false) {}
+  bool start_key;
+  bool end_key;
+  bool start_token;
+  bool end_token;
+  bool row_filter;
+} _KeyRange__isset;
+
+class KeyRange {
+ public:
+
+  static const char* ascii_fingerprint; // = "A6EC82FA0980B91C7C8EB013C61CA1B0";
+  static const uint8_t binary_fingerprint[16]; // = {0xA6,0xEC,0x82,0xFA,0x09,0x80,0xB9,0x1C,0x7C,0x8E,0xB0,0x13,0xC6,0x1C,0xA1,0xB0};
+
+  KeyRange() : start_key(""), end_key(""), start_token(""), end_token(""), count(100) {
+  }
+
+  virtual ~KeyRange() throw() {}
+
+  std::string start_key;
+  std::string end_key;
+  std::string start_token;
+  std::string end_token;
+  std::vector<IndexExpression>  row_filter;
+  int32_t count;
+
+  _KeyRange__isset __isset;
+
+  void __set_start_key(const std::string& val) {
+    start_key = val;
+    __isset.start_key = true;
+  }
+
+  void __set_end_key(const std::string& val) {
+    end_key = val;
+    __isset.end_key = true;
+  }
+
+  void __set_start_token(const std::string& val) {
+    start_token = val;
+    __isset.start_token = true;
+  }
+
+  void __set_end_token(const std::string& val) {
+    end_token = val;
+    __isset.end_token = true;
+  }
+
+  void __set_row_filter(const std::vector<IndexExpression> & val) {
+    row_filter = val;
+    __isset.row_filter = true;
+  }
+
+  void __set_count(const int32_t val) {
+    count = val;
+  }
+
+  bool operator == (const KeyRange & rhs) const
+  {
+    if (__isset.start_key != rhs.__isset.start_key)
+      return false;
+    else if (__isset.start_key && !(start_key == rhs.start_key))
+      return false;
+    if (__isset.end_key != rhs.__isset.end_key)
+      return false;
+    else if (__isset.end_key && !(end_key == rhs.end_key))
+      return false;
+    if (__isset.start_token != rhs.__isset.start_token)
+      return false;
+    else if (__isset.start_token && !(start_token == rhs.start_token))
+      return false;
+    if (__isset.end_token != rhs.__isset.end_token)
+      return false;
+    else if (__isset.end_token && !(end_token == rhs.end_token))
+      return false;
+    if (__isset.row_filter != rhs.__isset.row_filter)
+      return false;
+    else if (__isset.row_filter && !(row_filter == rhs.row_filter))
+      return false;
+    if (!(count == rhs.count))
+      return false;
+    return true;
+  }
+  bool operator != (const KeyRange &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const KeyRange & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class KeySlice {
+ public:
+
+  static const char* ascii_fingerprint; // = "D1568675B0C135C909E3169B72A4DA3D";
+  static const uint8_t binary_fingerprint[16]; // = {0xD1,0x56,0x86,0x75,0xB0,0xC1,0x35,0xC9,0x09,0xE3,0x16,0x9B,0x72,0xA4,0xDA,0x3D};
+
+  KeySlice() : key("") {
+  }
+
+  virtual ~KeySlice() throw() {}
+
+  std::string key;
+  std::vector<ColumnOrSuperColumn>  columns;
+
+  void __set_key(const std::string& val) {
+    key = val;
+  }
+
+  void __set_columns(const std::vector<ColumnOrSuperColumn> & val) {
+    columns = val;
+  }
+
+  bool operator == (const KeySlice & rhs) const
+  {
+    if (!(key == rhs.key))
+      return false;
+    if (!(columns == rhs.columns))
+      return false;
+    return true;
+  }
+  bool operator != (const KeySlice &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const KeySlice & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class KeyCount {
+ public:
+
+  static const char* ascii_fingerprint; // = "EEBC915CE44901401D881E6091423036";
+  static const uint8_t binary_fingerprint[16]; // = {0xEE,0xBC,0x91,0x5C,0xE4,0x49,0x01,0x40,0x1D,0x88,0x1E,0x60,0x91,0x42,0x30,0x36};
+
+  KeyCount() : key(""), count(0) {
+  }
+
+  virtual ~KeyCount() throw() {}
+
+  std::string key;
+  int32_t count;
+
+  void __set_key(const std::string& val) {
+    key = val;
+  }
+
+  void __set_count(const int32_t val) {
+    count = val;
+  }
+
+  bool operator == (const KeyCount & rhs) const
+  {
+    if (!(key == rhs.key))
+      return false;
+    if (!(count == rhs.count))
+      return false;
+    return true;
+  }
+  bool operator != (const KeyCount &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const KeyCount & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _Deletion__isset {
+  _Deletion__isset() : timestamp(false), super_column(false), predicate(false) {}
+  bool timestamp;
+  bool super_column;
+  bool predicate;
+} _Deletion__isset;
+
+class Deletion {
+ public:
+
+  static const char* ascii_fingerprint; // = "40F33ECF1C932CA77C2414C4E6C60CBE";
+  static const uint8_t binary_fingerprint[16]; // = {0x40,0xF3,0x3E,0xCF,0x1C,0x93,0x2C,0xA7,0x7C,0x24,0x14,0xC4,0xE6,0xC6,0x0C,0xBE};
+
+  Deletion() : timestamp(0), super_column("") {
+  }
+
+  virtual ~Deletion() throw() {}
+
+  int64_t timestamp;
+  std::string super_column;
+  SlicePredicate predicate;
+
+  _Deletion__isset __isset;
+
+  void __set_timestamp(const int64_t val) {
+    timestamp = val;
+    __isset.timestamp = true;
+  }
+
+  void __set_super_column(const std::string& val) {
+    super_column = val;
+    __isset.super_column = true;
+  }
+
+  void __set_predicate(const SlicePredicate& val) {
+    predicate = val;
+    __isset.predicate = true;
+  }
+
+  bool operator == (const Deletion & rhs) const
+  {
+    if (__isset.timestamp != rhs.__isset.timestamp)
+      return false;
+    else if (__isset.timestamp && !(timestamp == rhs.timestamp))
+      return false;
+    if (__isset.super_column != rhs.__isset.super_column)
+      return false;
+    else if (__isset.super_column && !(super_column == rhs.super_column))
+      return false;
+    if (__isset.predicate != rhs.__isset.predicate)
+      return false;
+    else if (__isset.predicate && !(predicate == rhs.predicate))
+      return false;
+    return true;
+  }
+  bool operator != (const Deletion &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const Deletion & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _Mutation__isset {
+  _Mutation__isset() : column_or_supercolumn(false), deletion(false) {}
+  bool column_or_supercolumn;
+  bool deletion;
+} _Mutation__isset;
+
+class Mutation {
+ public:
+
+  static const char* ascii_fingerprint; // = "E8B65DF3979C6868F80DF81F8E769E63";
+  static const uint8_t binary_fingerprint[16]; // = {0xE8,0xB6,0x5D,0xF3,0x97,0x9C,0x68,0x68,0xF8,0x0D,0xF8,0x1F,0x8E,0x76,0x9E,0x63};
+
+  Mutation() {
+  }
+
+  virtual ~Mutation() throw() {}
+
+  ColumnOrSuperColumn column_or_supercolumn;
+  Deletion deletion;
+
+  _Mutation__isset __isset;
+
+  void __set_column_or_supercolumn(const ColumnOrSuperColumn& val) {
+    column_or_supercolumn = val;
+    __isset.column_or_supercolumn = true;
+  }
+
+  void __set_deletion(const Deletion& val) {
+    deletion = val;
+    __isset.deletion = true;
+  }
+
+  bool operator == (const Mutation & rhs) const
+  {
+    if (__isset.column_or_supercolumn != rhs.__isset.column_or_supercolumn)
+      return false;
+    else if (__isset.column_or_supercolumn && !(column_or_supercolumn == rhs.column_or_supercolumn))
+      return false;
+    if (__isset.deletion != rhs.__isset.deletion)
+      return false;
+    else if (__isset.deletion && !(deletion == rhs.deletion))
+      return false;
+    return true;
+  }
+  bool operator != (const Mutation &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const Mutation & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _EndpointDetails__isset {
+  _EndpointDetails__isset() : host(false), datacenter(false), rack(false) {}
+  bool host;
+  bool datacenter;
+  bool rack;
+} _EndpointDetails__isset;
+
+class EndpointDetails {
+ public:
+
+  static const char* ascii_fingerprint; // = "F4A50F0EC638C7F66026F9B6678FD89B";
+  static const uint8_t binary_fingerprint[16]; // = {0xF4,0xA5,0x0F,0x0E,0xC6,0x38,0xC7,0xF6,0x60,0x26,0xF9,0xB6,0x67,0x8F,0xD8,0x9B};
+
+  EndpointDetails() : host(""), datacenter(""), rack("") {
+  }
+
+  virtual ~EndpointDetails() throw() {}
+
+  std::string host;
+  std::string datacenter;
+  std::string rack;
+
+  _EndpointDetails__isset __isset;
+
+  void __set_host(const std::string& val) {
+    host = val;
+  }
+
+  void __set_datacenter(const std::string& val) {
+    datacenter = val;
+  }
+
+  void __set_rack(const std::string& val) {
+    rack = val;
+    __isset.rack = true;
+  }
+
+  bool operator == (const EndpointDetails & rhs) const
+  {
+    if (!(host == rhs.host))
+      return false;
+    if (!(datacenter == rhs.datacenter))
+      return false;
+    if (__isset.rack != rhs.__isset.rack)
+      return false;
+    else if (__isset.rack && !(rack == rhs.rack))
+      return false;
+    return true;
+  }
+  bool operator != (const EndpointDetails &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const EndpointDetails & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _TokenRange__isset {
+  _TokenRange__isset() : rpc_endpoints(false), endpoint_details(false) {}
+  bool rpc_endpoints;
+  bool endpoint_details;
+} _TokenRange__isset;
+
+class TokenRange {
+ public:
+
+  static const char* ascii_fingerprint; // = "832268DC4CD6B17EE8881FC57EA04679";
+  static const uint8_t binary_fingerprint[16]; // = {0x83,0x22,0x68,0xDC,0x4C,0xD6,0xB1,0x7E,0xE8,0x88,0x1F,0xC5,0x7E,0xA0,0x46,0x79};
+
+  TokenRange() : start_token(""), end_token("") {
+  }
+
+  virtual ~TokenRange() throw() {}
+
+  std::string start_token;
+  std::string end_token;
+  std::vector<std::string>  endpoints;
+  std::vector<std::string>  rpc_endpoints;
+  std::vector<EndpointDetails>  endpoint_details;
+
+  _TokenRange__isset __isset;
+
+  void __set_start_token(const std::string& val) {
+    start_token = val;
+  }
+
+  void __set_end_token(const std::string& val) {
+    end_token = val;
+  }
+
+  void __set_endpoints(const std::vector<std::string> & val) {
+    endpoints = val;
+  }
+
+  void __set_rpc_endpoints(const std::vector<std::string> & val) {
+    rpc_endpoints = val;
+    __isset.rpc_endpoints = true;
+  }
+
+  void __set_endpoint_details(const std::vector<EndpointDetails> & val) {
+    endpoint_details = val;
+    __isset.endpoint_details = true;
+  }
+
+  bool operator == (const TokenRange & rhs) const
+  {
+    if (!(start_token == rhs.start_token))
+      return false;
+    if (!(end_token == rhs.end_token))
+      return false;
+    if (!(endpoints == rhs.endpoints))
+      return false;
+    if (__isset.rpc_endpoints != rhs.__isset.rpc_endpoints)
+      return false;
+    else if (__isset.rpc_endpoints && !(rpc_endpoints == rhs.rpc_endpoints))
+      return false;
+    if (__isset.endpoint_details != rhs.__isset.endpoint_details)
+      return false;
+    else if (__isset.endpoint_details && !(endpoint_details == rhs.endpoint_details))
+      return false;
+    return true;
+  }
+  bool operator != (const TokenRange &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const TokenRange & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class AuthenticationRequest {
+ public:
+
+  static const char* ascii_fingerprint; // = "5EA2D527ECA3BA20C77AFC023EE8C05F";
+  static const uint8_t binary_fingerprint[16]; // = {0x5E,0xA2,0xD5,0x27,0xEC,0xA3,0xBA,0x20,0xC7,0x7A,0xFC,0x02,0x3E,0xE8,0xC0,0x5F};
+
+  AuthenticationRequest() {
+  }
+
+  virtual ~AuthenticationRequest() throw() {}
+
+  std::map<std::string, std::string>  credentials;
+
+  void __set_credentials(const std::map<std::string, std::string> & val) {
+    credentials = val;
+  }
+
+  bool operator == (const AuthenticationRequest & rhs) const
+  {
+    if (!(credentials == rhs.credentials))
+      return false;
+    return true;
+  }
+  bool operator != (const AuthenticationRequest &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const AuthenticationRequest & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _ColumnDef__isset {
+  _ColumnDef__isset() : index_type(false), index_name(false), index_options(false) {}
+  bool index_type;
+  bool index_name;
+  bool index_options;
+} _ColumnDef__isset;
+
+class ColumnDef {
+ public:
+
+  static const char* ascii_fingerprint; // = "0D89CE83D7EDAD079AC3213ED1DCAA58";
+  static const uint8_t binary_fingerprint[16]; // = {0x0D,0x89,0xCE,0x83,0xD7,0xED,0xAD,0x07,0x9A,0xC3,0x21,0x3E,0xD1,0xDC,0xAA,0x58};
+
+  ColumnDef() : name(""), validation_class(""), index_type((IndexType::type)0), index_name("") {
+  }
+
+  virtual ~ColumnDef() throw() {}
+
+  std::string name;
+  std::string validation_class;
+  IndexType::type index_type;
+  std::string index_name;
+  std::map<std::string, std::string>  index_options;
+
+  _ColumnDef__isset __isset;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_validation_class(const std::string& val) {
+    validation_class = val;
+  }
+
+  void __set_index_type(const IndexType::type val) {
+    index_type = val;
+    __isset.index_type = true;
+  }
+
+  void __set_index_name(const std::string& val) {
+    index_name = val;
+    __isset.index_name = true;
+  }
+
+  void __set_index_options(const std::map<std::string, std::string> & val) {
+    index_options = val;
+    __isset.index_options = true;
+  }
+
+  bool operator == (const ColumnDef & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (!(validation_class == rhs.validation_class))
+      return false;
+    if (__isset.index_type != rhs.__isset.index_type)
+      return false;
+    else if (__isset.index_type && !(index_type == rhs.index_type))
+      return false;
+    if (__isset.index_name != rhs.__isset.index_name)
+      return false;
+    else if (__isset.index_name && !(index_name == rhs.index_name))
+      return false;
+    if (__isset.index_options != rhs.__isset.index_options)
+      return false;
+    else if (__isset.index_options && !(index_options == rhs.index_options))
+      return false;
+    return true;
+  }
+  bool operator != (const ColumnDef &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const ColumnDef & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _CfDef__isset {
+  _CfDef__isset() : column_type(false), comparator_type(false), subcomparator_type(false), comment(false), read_repair_chance(false), column_metadata(false), gc_grace_seconds(false), default_validation_class(false), id(false), min_compaction_threshold(false), max_compaction_threshold(false), replicate_on_write(false), key_validation_class(false), key_alias(false), compaction_strategy(false), compaction_strategy_options(false), compression_options(false), bloom_filter_fp_chance(false), caching(false), dclocal_read_repair_chance(false), row_cache_size(false), key_cache_size(false), row_cache_save_period_in_seconds(false), key_cache_save_period_in_seconds(false), memtable_flush_after_mins(false), memtable_throughput_in_mb(false), memtable_operations_in_millions(false), merge_shards_chance(false), row_cache_provider(false), row_cache_keys_to_save(false) {}
+  bool column_type;
+  bool comparator_type;
+  bool subcomparator_type;
+  bool comment;
+  bool read_repair_chance;
+  bool column_metadata;
+  bool gc_grace_seconds;
+  bool default_validation_class;
+  bool id;
+  bool min_compaction_threshold;
+  bool max_compaction_threshold;
+  bool replicate_on_write;
+  bool key_validation_class;
+  bool key_alias;
+  bool compaction_strategy;
+  bool compaction_strategy_options;
+  bool compression_options;
+  bool bloom_filter_fp_chance;
+  bool caching;
+  bool dclocal_read_repair_chance;
+  bool row_cache_size;
+  bool key_cache_size;
+  bool row_cache_save_period_in_seconds;
+  bool key_cache_save_period_in_seconds;
+  bool memtable_flush_after_mins;
+  bool memtable_throughput_in_mb;
+  bool memtable_operations_in_millions;
+  bool merge_shards_chance;
+  bool row_cache_provider;
+  bool row_cache_keys_to_save;
+} _CfDef__isset;
+
+class CfDef {
+ public:
+
+  static const char* ascii_fingerprint; // = "231A260521B5DD99EFBCCBDD8768CA7D";
+  static const uint8_t binary_fingerprint[16]; // = {0x23,0x1A,0x26,0x05,0x21,0xB5,0xDD,0x99,0xEF,0xBC,0xCB,0xDD,0x87,0x68,0xCA,0x7D};
+
+  CfDef() : keyspace(""), name(""), column_type("Standard"), comparator_type("BytesType"), subcomparator_type(""), comment(""), read_repair_chance(0), gc_grace_seconds(0), default_validation_class(""), id(0), min_compaction_threshold(0), max_compaction_threshold(0), replicate_on_write(0), key_validation_class(""), key_alias(""), compaction_strategy(""), bloom_filter_fp_chance(0), caching("keys_only"), dclocal_read_repair_chance(0), row_cache_size(0), key_cache_size(0), row_cache_save_period_in_seconds(0), key_cache_save_period_in_seconds(0), memtable_flush_after_mins(0), memtable_throughput_in_mb(0), memtable_operations_in_millions(0), merge_shards_chance(0), row_cache_provider(""), row_cache_keys_to_save(0) {
+  }
+
+  virtual ~CfDef() throw() {}
+
+  std::string keyspace;
+  std::string name;
+  std::string column_type;
+  std::string comparator_type;
+  std::string subcomparator_type;
+  std::string comment;
+  double read_repair_chance;
+  std::vector<ColumnDef>  column_metadata;
+  int32_t gc_grace_seconds;
+  std::string default_validation_class;
+  int32_t id;
+  int32_t min_compaction_threshold;
+  int32_t max_compaction_threshold;
+  bool replicate_on_write;
+  std::string key_validation_class;
+  std::string key_alias;
+  std::string compaction_strategy;
+  std::map<std::string, std::string>  compaction_strategy_options;
+  std::map<std::string, std::string>  compression_options;
+  double bloom_filter_fp_chance;
+  std::string caching;
+  double dclocal_read_repair_chance;
+  double row_cache_size;
+  double key_cache_size;
+  int32_t row_cache_save_period_in_seconds;
+  int32_t key_cache_save_period_in_seconds;
+  int32_t memtable_flush_after_mins;
+  int32_t memtable_throughput_in_mb;
+  double memtable_operations_in_millions;
+  double merge_shards_chance;
+  std::string row_cache_provider;
+  int32_t row_cache_keys_to_save;
+
+  _CfDef__isset __isset;
+
+  void __set_keyspace(const std::string& val) {
+    keyspace = val;
+  }
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_column_type(const std::string& val) {
+    column_type = val;
+    __isset.column_type = true;
+  }
+
+  void __set_comparator_type(const std::string& val) {
+    comparator_type = val;
+    __isset.comparator_type = true;
+  }
+
+  void __set_subcomparator_type(const std::string& val) {
+    subcomparator_type = val;
+    __isset.subcomparator_type = true;
+  }
+
+  void __set_comment(const std::string& val) {
+    comment = val;
+    __isset.comment = true;
+  }
+
+  void __set_read_repair_chance(const double val) {
+    read_repair_chance = val;
+    __isset.read_repair_chance = true;
+  }
+
+  void __set_column_metadata(const std::vector<ColumnDef> & val) {
+    column_metadata = val;
+    __isset.column_metadata = true;
+  }
+
+  void __set_gc_grace_seconds(const int32_t val) {
+    gc_grace_seconds = val;
+    __isset.gc_grace_seconds = true;
+  }
+
+  void __set_default_validation_class(const std::string& val) {
+    default_validation_class = val;
+    __isset.default_validation_class = true;
+  }
+
+  void __set_id(const int32_t val) {
+    id = val;
+    __isset.id = true;
+  }
+
+  void __set_min_compaction_threshold(const int32_t val) {
+    min_compaction_threshold = val;
+    __isset.min_compaction_threshold = true;
+  }
+
+  void __set_max_compaction_threshold(const int32_t val) {
+    max_compaction_threshold = val;
+    __isset.max_compaction_threshold = true;
+  }
+
+  void __set_replicate_on_write(const bool val) {
+    replicate_on_write = val;
+    __isset.replicate_on_write = true;
+  }
+
+  void __set_key_validation_class(const std::string& val) {
+    key_validation_class = val;
+    __isset.key_validation_class = true;
+  }
+
+  void __set_key_alias(const std::string& val) {
+    key_alias = val;
+    __isset.key_alias = true;
+  }
+
+  void __set_compaction_strategy(const std::string& val) {
+    compaction_strategy = val;
+    __isset.compaction_strategy = true;
+  }
+
+  void __set_compaction_strategy_options(const std::map<std::string, std::string> & val) {
+    compaction_strategy_options = val;
+    __isset.compaction_strategy_options = true;
+  }
+
+  void __set_compression_options(const std::map<std::string, std::string> & val) {
+    compression_options = val;
+    __isset.compression_options = true;
+  }
+
+  void __set_bloom_filter_fp_chance(const double val) {
+    bloom_filter_fp_chance = val;
+    __isset.bloom_filter_fp_chance = true;
+  }
+
+  void __set_caching(const std::string& val) {
+    caching = val;
+    __isset.caching = true;
+  }
+
+  void __set_dclocal_read_repair_chance(const double val) {
+    dclocal_read_repair_chance = val;
+    __isset.dclocal_read_repair_chance = true;
+  }
+
+  void __set_row_cache_size(const double val) {
+    row_cache_size = val;
+    __isset.row_cache_size = true;
+  }
+
+  void __set_key_cache_size(const double val) {
+    key_cache_size = val;
+    __isset.key_cache_size = true;
+  }
+
+  void __set_row_cache_save_period_in_seconds(const int32_t val) {
+    row_cache_save_period_in_seconds = val;
+    __isset.row_cache_save_period_in_seconds = true;
+  }
+
+  void __set_key_cache_save_period_in_seconds(const int32_t val) {
+    key_cache_save_period_in_seconds = val;
+    __isset.key_cache_save_period_in_seconds = true;
+  }
+
+  void __set_memtable_flush_after_mins(const int32_t val) {
+    memtable_flush_after_mins = val;
+    __isset.memtable_flush_after_mins = true;
+  }
+
+  void __set_memtable_throughput_in_mb(const int32_t val) {
+    memtable_throughput_in_mb = val;
+    __isset.memtable_throughput_in_mb = true;
+  }
+
+  void __set_memtable_operations_in_millions(const double val) {
+    memtable_operations_in_millions = val;
+    __isset.memtable_operations_in_millions = true;
+  }
+
+  void __set_merge_shards_chance(const double val) {
+    merge_shards_chance = val;
+    __isset.merge_shards_chance = true;
+  }
+
+  void __set_row_cache_provider(const std::string& val) {
+    row_cache_provider = val;
+    __isset.row_cache_provider = true;
+  }
+
+  void __set_row_cache_keys_to_save(const int32_t val) {
+    row_cache_keys_to_save = val;
+    __isset.row_cache_keys_to_save = true;
+  }
+
+  bool operator == (const CfDef & rhs) const
+  {
+    if (!(keyspace == rhs.keyspace))
+      return false;
+    if (!(name == rhs.name))
+      return false;
+    if (__isset.column_type != rhs.__isset.column_type)
+      return false;
+    else if (__isset.column_type && !(column_type == rhs.column_type))
+      return false;
+    if (__isset.comparator_type != rhs.__isset.comparator_type)
+      return false;
+    else if (__isset.comparator_type && !(comparator_type == rhs.comparator_type))
+      return false;
+    if (__isset.subcomparator_type != rhs.__isset.subcomparator_type)
+      return false;
+    else if (__isset.subcomparator_type && !(subcomparator_type == rhs.subcomparator_type))
+      return false;
+    if (__isset.comment != rhs.__isset.comment)
+      return false;
+    else if (__isset.comment && !(comment == rhs.comment))
+      return false;
+    if (__isset.read_repair_chance != rhs.__isset.read_repair_chance)
+      return false;
+    else if (__isset.read_repair_chance && !(read_repair_chance == rhs.read_repair_chance))
+      return false;
+    if (__isset.column_metadata != rhs.__isset.column_metadata)
+      return false;
+    else if (__isset.column_metadata && !(column_metadata == rhs.column_metadata))
+      return false;
+    if (__isset.gc_grace_seconds != rhs.__isset.gc_grace_seconds)
+      return false;
+    else if (__isset.gc_grace_seconds && !(gc_grace_seconds == rhs.gc_grace_seconds))
+      return false;
+    if (__isset.default_validation_class != rhs.__isset.default_validation_class)
+      return false;
+    else if (__isset.default_validation_class && !(default_validation_class == rhs.default_validation_class))
+      return false;
+    if (__isset.id != rhs.__isset.id)
+      return false;
+    else if (__isset.id && !(id == rhs.id))
+      return false;
+    if (__isset.min_compaction_threshold != rhs.__isset.min_compaction_threshold)
+      return false;
+    else if (__isset.min_compaction_threshold && !(min_compaction_threshold == rhs.min_compaction_threshold))
+      return false;
+    if (__isset.max_compaction_threshold != rhs.__isset.max_compaction_threshold)
+      return false;
+    else if (__isset.max_compaction_threshold && !(max_compaction_threshold == rhs.max_compaction_threshold))
+      return false;
+    if (__isset.replicate_on_write != rhs.__isset.replicate_on_write)
+      return false;
+    else if (__isset.replicate_on_write && !(replicate_on_write == rhs.replicate_on_write))
+      return false;
+    if (__isset.key_validation_class != rhs.__isset.key_validation_class)
+      return false;
+    else if (__isset.key_validation_class && !(key_validation_class == rhs.key_validation_class))
+      return false;
+    if (__isset.key_alias != rhs.__isset.key_alias)
+      return false;
+    else if (__isset.key_alias && !(key_alias == rhs.key_alias))
+      return false;
+    if (__isset.compaction_strategy != rhs.__isset.compaction_strategy)
+      return false;
+    else if (__isset.compaction_strategy && !(compaction_strategy == rhs.compaction_strategy))
+      return false;
+    if (__isset.compaction_strategy_options != rhs.__isset.compaction_strategy_options)
+      return false;
+    else if (__isset.compaction_strategy_options && !(compaction_strategy_options == rhs.compaction_strategy_options))
+      return false;
+    if (__isset.compression_options != rhs.__isset.compression_options)
+      return false;
+    else if (__isset.compression_options && !(compression_options == rhs.compression_options))
+      return false;
+    if (__isset.bloom_filter_fp_chance != rhs.__isset.bloom_filter_fp_chance)
+      return false;
+    else if (__isset.bloom_filter_fp_chance && !(bloom_filter_fp_chance == rhs.bloom_filter_fp_chance))
+      return false;
+    if (__isset.caching != rhs.__isset.caching)
+      return false;
+    else if (__isset.caching && !(caching == rhs.caching))
+      return false;
+    if (__isset.dclocal_read_repair_chance != rhs.__isset.dclocal_read_repair_chance)
+      return false;
+    else if (__isset.dclocal_read_repair_chance && !(dclocal_read_repair_chance == rhs.dclocal_read_repair_chance))
+      return false;
+    if (__isset.row_cache_size != rhs.__isset.row_cache_size)
+      return false;
+    else if (__isset.row_cache_size && !(row_cache_size == rhs.row_cache_size))
+      return false;
+    if (__isset.key_cache_size != rhs.__isset.key_cache_size)
+      return false;
+    else if (__isset.key_cache_size && !(key_cache_size == rhs.key_cache_size))
+      return false;
+    if (__isset.row_cache_save_period_in_seconds != rhs.__isset.row_cache_save_period_in_seconds)
+      return false;
+    else if (__isset.row_cache_save_period_in_seconds && !(row_cache_save_period_in_seconds == rhs.row_cache_save_period_in_seconds))
+      return false;
+    if (__isset.key_cache_save_period_in_seconds != rhs.__isset.key_cache_save_period_in_seconds)
+      return false;
+    else if (__isset.key_cache_save_period_in_seconds && !(key_cache_save_period_in_seconds == rhs.key_cache_save_period_in_seconds))
+      return false;
+    if (__isset.memtable_flush_after_mins != rhs.__isset.memtable_flush_after_mins)
+      return false;
+    else if (__isset.memtable_flush_after_mins && !(memtable_flush_after_mins == rhs.memtable_flush_after_mins))
+      return false;
+    if (__isset.memtable_throughput_in_mb != rhs.__isset.memtable_throughput_in_mb)
+      return false;
+    else if (__isset.memtable_throughput_in_mb && !(memtable_throughput_in_mb == rhs.memtable_throughput_in_mb))
+      return false;
+    if (__isset.memtable_operations_in_millions != rhs.__isset.memtable_operations_in_millions)
+      return false;
+    else if (__isset.memtable_operations_in_millions && !(memtable_operations_in_millions == rhs.memtable_operations_in_millions))
+      return false;
+    if (__isset.merge_shards_chance != rhs.__isset.merge_shards_chance)
+      return false;
+    else if (__isset.merge_shards_chance && !(merge_shards_chance == rhs.merge_shards_chance))
+      return false;
+    if (__isset.row_cache_provider != rhs.__isset.row_cache_provider)
+      return false;
+    else if (__isset.row_cache_provider && !(row_cache_provider == rhs.row_cache_provider))
+      return false;
+    if (__isset.row_cache_keys_to_save != rhs.__isset.row_cache_keys_to_save)
+      return false;
+    else if (__isset.row_cache_keys_to_save && !(row_cache_keys_to_save == rhs.row_cache_keys_to_save))
+      return false;
+    return true;
+  }
+  bool operator != (const CfDef &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CfDef & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _KsDef__isset {
+  _KsDef__isset() : strategy_options(false), replication_factor(false), durable_writes(false) {}
+  bool strategy_options;
+  bool replication_factor;
+  bool durable_writes;
+} _KsDef__isset;
+
+class KsDef {
+ public:
+
+  static const char* ascii_fingerprint; // = "0767851B6476EB3777A21E59E912E11A";
+  static const uint8_t binary_fingerprint[16]; // = {0x07,0x67,0x85,0x1B,0x64,0x76,0xEB,0x37,0x77,0xA2,0x1E,0x59,0xE9,0x12,0xE1,0x1A};
+
+  KsDef() : name(""), strategy_class(""), replication_factor(0), durable_writes(true) {
+  }
+
+  virtual ~KsDef() throw() {}
+
+  std::string name;
+  std::string strategy_class;
+  std::map<std::string, std::string>  strategy_options;
+  int32_t replication_factor;
+  std::vector<CfDef>  cf_defs;
+  bool durable_writes;
+
+  _KsDef__isset __isset;
+
+  void __set_name(const std::string& val) {
+    name = val;
+  }
+
+  void __set_strategy_class(const std::string& val) {
+    strategy_class = val;
+  }
+
+  void __set_strategy_options(const std::map<std::string, std::string> & val) {
+    strategy_options = val;
+    __isset.strategy_options = true;
+  }
+
+  void __set_replication_factor(const int32_t val) {
+    replication_factor = val;
+    __isset.replication_factor = true;
+  }
+
+  void __set_cf_defs(const std::vector<CfDef> & val) {
+    cf_defs = val;
+  }
+
+  void __set_durable_writes(const bool val) {
+    durable_writes = val;
+    __isset.durable_writes = true;
+  }
+
+  bool operator == (const KsDef & rhs) const
+  {
+    if (!(name == rhs.name))
+      return false;
+    if (!(strategy_class == rhs.strategy_class))
+      return false;
+    if (__isset.strategy_options != rhs.__isset.strategy_options)
+      return false;
+    else if (__isset.strategy_options && !(strategy_options == rhs.strategy_options))
+      return false;
+    if (__isset.replication_factor != rhs.__isset.replication_factor)
+      return false;
+    else if (__isset.replication_factor && !(replication_factor == rhs.replication_factor))
+      return false;
+    if (!(cf_defs == rhs.cf_defs))
+      return false;
+    if (__isset.durable_writes != rhs.__isset.durable_writes)
+      return false;
+    else if (__isset.durable_writes && !(durable_writes == rhs.durable_writes))
+      return false;
+    return true;
+  }
+  bool operator != (const KsDef &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const KsDef & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class CqlRow {
+ public:
+
+  static const char* ascii_fingerprint; // = "470EFC558004E98D92D604898305C04E";
+  static const uint8_t binary_fingerprint[16]; // = {0x47,0x0E,0xFC,0x55,0x80,0x04,0xE9,0x8D,0x92,0xD6,0x04,0x89,0x83,0x05,0xC0,0x4E};
+
+  CqlRow() : key("") {
+  }
+
+  virtual ~CqlRow() throw() {}
+
+  std::string key;
+  std::vector<Column>  columns;
+
+  void __set_key(const std::string& val) {
+    key = val;
+  }
+
+  void __set_columns(const std::vector<Column> & val) {
+    columns = val;
+  }
+
+  bool operator == (const CqlRow & rhs) const
+  {
+    if (!(key == rhs.key))
+      return false;
+    if (!(columns == rhs.columns))
+      return false;
+    return true;
+  }
+  bool operator != (const CqlRow &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CqlRow & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+
+class CqlMetadata {
+ public:
+
+  static const char* ascii_fingerprint; // = "B7C5A4AA9652C744A48EBC1C12D531E7";
+  static const uint8_t binary_fingerprint[16]; // = {0xB7,0xC5,0xA4,0xAA,0x96,0x52,0xC7,0x44,0xA4,0x8E,0xBC,0x1C,0x12,0xD5,0x31,0xE7};
+
+  CqlMetadata() : default_name_type(""), default_value_type("") {
+  }
+
+  virtual ~CqlMetadata() throw() {}
+
+  std::map<std::string, std::string>  name_types;
+  std::map<std::string, std::string>  value_types;
+  std::string default_name_type;
+  std::string default_value_type;
+
+  void __set_name_types(const std::map<std::string, std::string> & val) {
+    name_types = val;
+  }
+
+  void __set_value_types(const std::map<std::string, std::string> & val) {
+    value_types = val;
+  }
+
+  void __set_default_name_type(const std::string& val) {
+    default_name_type = val;
+  }
+
+  void __set_default_value_type(const std::string& val) {
+    default_value_type = val;
+  }
+
+  bool operator == (const CqlMetadata & rhs) const
+  {
+    if (!(name_types == rhs.name_types))
+      return false;
+    if (!(value_types == rhs.value_types))
+      return false;
+    if (!(default_name_type == rhs.default_name_type))
+      return false;
+    if (!(default_value_type == rhs.default_value_type))
+      return false;
+    return true;
+  }
+  bool operator != (const CqlMetadata &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CqlMetadata & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _CqlResult__isset {
+  _CqlResult__isset() : rows(false), num(false), schema(false) {}
+  bool rows;
+  bool num;
+  bool schema;
+} _CqlResult__isset;
+
+class CqlResult {
+ public:
+
+  static const char* ascii_fingerprint; // = "521B9CE5AF77539F7267F6952B609E81";
+  static const uint8_t binary_fingerprint[16]; // = {0x52,0x1B,0x9C,0xE5,0xAF,0x77,0x53,0x9F,0x72,0x67,0xF6,0x95,0x2B,0x60,0x9E,0x81};
+
+  CqlResult() : type((CqlResultType::type)0), num(0) {
+  }
+
+  virtual ~CqlResult() throw() {}
+
+  CqlResultType::type type;
+  std::vector<CqlRow>  rows;
+  int32_t num;
+  CqlMetadata schema;
+
+  _CqlResult__isset __isset;
+
+  void __set_type(const CqlResultType::type val) {
+    type = val;
+  }
+
+  void __set_rows(const std::vector<CqlRow> & val) {
+    rows = val;
+    __isset.rows = true;
+  }
+
+  void __set_num(const int32_t val) {
+    num = val;
+    __isset.num = true;
+  }
+
+  void __set_schema(const CqlMetadata& val) {
+    schema = val;
+    __isset.schema = true;
+  }
+
+  bool operator == (const CqlResult & rhs) const
+  {
+    if (!(type == rhs.type))
+      return false;
+    if (__isset.rows != rhs.__isset.rows)
+      return false;
+    else if (__isset.rows && !(rows == rhs.rows))
+      return false;
+    if (__isset.num != rhs.__isset.num)
+      return false;
+    else if (__isset.num && !(num == rhs.num))
+      return false;
+    if (__isset.schema != rhs.__isset.schema)
+      return false;
+    else if (__isset.schema && !(schema == rhs.schema))
+      return false;
+    return true;
+  }
+  bool operator != (const CqlResult &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CqlResult & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+typedef struct _CqlPreparedResult__isset {
+  _CqlPreparedResult__isset() : variable_types(false), variable_names(false) {}
+  bool variable_types;
+  bool variable_names;
+} _CqlPreparedResult__isset;
+
+class CqlPreparedResult {
+ public:
+
+  static const char* ascii_fingerprint; // = "7E1663EC688DFDC28722BF36F9F64E6F";
+  static const uint8_t binary_fingerprint[16]; // = {0x7E,0x16,0x63,0xEC,0x68,0x8D,0xFD,0xC2,0x87,0x22,0xBF,0x36,0xF9,0xF6,0x4E,0x6F};
+
+  CqlPreparedResult() : itemId(0), count(0) {
+  }
+
+  virtual ~CqlPreparedResult() throw() {}
+
+  int32_t itemId;
+  int32_t count;
+  std::vector<std::string>  variable_types;
+  std::vector<std::string>  variable_names;
+
+  _CqlPreparedResult__isset __isset;
+
+  void __set_itemId(const int32_t val) {
+    itemId = val;
+  }
+
+  void __set_count(const int32_t val) {
+    count = val;
+  }
+
+  void __set_variable_types(const std::vector<std::string> & val) {
+    variable_types = val;
+    __isset.variable_types = true;
+  }
+
+  void __set_variable_names(const std::vector<std::string> & val) {
+    variable_names = val;
+    __isset.variable_names = true;
+  }
+
+  bool operator == (const CqlPreparedResult & rhs) const
+  {
+    if (!(itemId == rhs.itemId))
+      return false;
+    if (!(count == rhs.count))
+      return false;
+    if (__isset.variable_types != rhs.__isset.variable_types)
+      return false;
+    else if (__isset.variable_types && !(variable_types == rhs.variable_types))
+      return false;
+    if (__isset.variable_names != rhs.__isset.variable_names)
+      return false;
+    else if (__isset.variable_names && !(variable_names == rhs.variable_names))
+      return false;
+    return true;
+  }
+  bool operator != (const CqlPreparedResult &rhs) const {
+    return !(*this == rhs);
+  }
+
+  bool operator < (const CqlPreparedResult & ) const;
+
+  uint32_t read(::apache::thrift::protocol::TProtocol* iprot);
+  uint32_t write(::apache::thrift::protocol::TProtocol* oprot) const;
+
+};
+
+}}} // namespace
+
+#endif

storage/cassandra/ha_cassandra.cc

+/* 
+  MP AB copyrights 
+*/
+
+#ifdef USE_PRAGMA_IMPLEMENTATION
+#pragma implementation        // gcc: Class implementation
+#endif
+
+#include <mysql/plugin.h>
+#include "ha_cassandra.h"
+#include "sql_class.h"
+
+static handler *cassandra_create_handler(handlerton *hton,
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root);
+
+
+handlerton *cassandra_hton;
+
+
+/* 
+   Hash used to track the number of open tables; variable for example share
+   methods
+*/
+static HASH cassandra_open_tables;
+
+/* The mutex used to init the hash; variable for example share methods */
+mysql_mutex_t cassandra_mutex;
+
+
+/**
+  Structure for CREATE TABLE options (table options).
+  It needs to be called ha_table_option_struct.
+
+  The option values can be specified in the CREATE TABLE at the end:
+  CREATE TABLE ( ... ) *here*
+*/
+
+struct ha_table_option_struct
+{
+  const char *host;
+  const char *keyspace;
+  const char *column_family;
+};
+
+
+ha_create_table_option cassandra_table_option_list[]=
+{
+  /*
+    one option that takes an arbitrary string
+  */
+  HA_TOPTION_STRING("thrift_host", host),
+  HA_TOPTION_STRING("keyspace", keyspace),
+  HA_TOPTION_STRING("column_family", column_family),
+  HA_TOPTION_END
+};
+
+
+/**
+  @brief
+  Function we use in the creation of our hash to get key.
+*/
+
+static uchar* cassandra_get_key(CASSANDRA_SHARE *share, size_t *length,
+                             my_bool not_used __attribute__((unused)))
+{
+  *length=share->table_name_length;
+  return (uchar*) share->table_name;
+}
+
+#ifdef HAVE_PSI_INTERFACE
+static PSI_mutex_key ex_key_mutex_example, ex_key_mutex_CASSANDRA_SHARE_mutex;
+
+static PSI_mutex_info all_cassandra_mutexes[]=
+{
+  { &ex_key_mutex_example, "cassandra", PSI_FLAG_GLOBAL},
+  { &ex_key_mutex_CASSANDRA_SHARE_mutex, "CASSANDRA_SHARE::mutex", 0}
+};
+
+static void init_cassandra_psi_keys()
+{
+  const char* category= "cassandra";
+  int count;
+
+  if (PSI_server == NULL)
+    return;
+
+  count= array_elements(all_cassandra_mutexes);
+  PSI_server->register_mutex(category, all_cassandra_mutexes, count);
+}
+#endif
+
+static int cassandra_init_func(void *p)
+{
+  DBUG_ENTER("cassandra_init_func");
+
+#ifdef HAVE_PSI_INTERFACE
+  init_cassandra_psi_keys();
+#endif
+
+  cassandra_hton= (handlerton *)p;
+  mysql_mutex_init(ex_key_mutex_example, &cassandra_mutex, MY_MUTEX_INIT_FAST);
+  (void) my_hash_init(&cassandra_open_tables,system_charset_info,32,0,0,
+                      (my_hash_get_key) cassandra_get_key,0,0);
+
+  cassandra_hton->state=   SHOW_OPTION_YES;
+  cassandra_hton->create=  cassandra_create_handler;
+  cassandra_hton->flags=   HTON_CAN_RECREATE;
+  cassandra_hton->table_options= cassandra_table_option_list;
+  //cassandra_hton->field_options= example_field_option_list;
+  cassandra_hton->field_options= NULL;
+
+  DBUG_RETURN(0);
+}
+
+
+static int cassandra_done_func(void *p)
+{
+  int error= 0;
+  DBUG_ENTER("cassandra_done_func");
+  if (cassandra_open_tables.records)
+    error= 1;
+  my_hash_free(&cassandra_open_tables);
+  mysql_mutex_destroy(&cassandra_mutex);
+  DBUG_RETURN(error);
+}
+
+
+/**
+  @brief
+  Example of simple lock controls. The "share" it creates is a
+  structure we will pass to each cassandra handler. Do you have to have
+  one of these? Well, you have pieces that are used for locking, and
+  they are needed to function.
+*/
+
+static CASSANDRA_SHARE *get_share(const char *table_name, TABLE *table)
+{
+  CASSANDRA_SHARE *share;
+  uint length;
+  char *tmp_name;
+
+  mysql_mutex_lock(&cassandra_mutex);
+  length=(uint) strlen(table_name);
+
+  if (!(share=(CASSANDRA_SHARE*) my_hash_search(&cassandra_open_tables,
+                                              (uchar*) table_name,
+                                              length)))
+  {
+    if (!(share=(CASSANDRA_SHARE *)
+          my_multi_malloc(MYF(MY_WME | MY_ZEROFILL),
+                          &share, sizeof(*share),
+                          &tmp_name, length+1,
+                          NullS)))
+    {
+      mysql_mutex_unlock(&cassandra_mutex);
+      return NULL;
+    }
+
+    share->use_count=0;
+    share->table_name_length=length;
+    share->table_name=tmp_name;
+    strmov(share->table_name,table_name);
+    if (my_hash_insert(&cassandra_open_tables, (uchar*) share))
+      goto error;
+    thr_lock_init(&share->lock);
+    mysql_mutex_init(ex_key_mutex_CASSANDRA_SHARE_mutex,
+                     &share->mutex, MY_MUTEX_INIT_FAST);
+  }
+  share->use_count++;
+  mysql_mutex_unlock(&cassandra_mutex);
+
+  return share;
+
+error:
+  mysql_mutex_destroy(&share->mutex);
+  my_free(share);
+
+  return NULL;
+}
+
+
+/**
+  @brief
+  Free lock controls. We call this whenever we close a table. If the table had
+  the last reference to the share, then we free memory associated with it.
+*/
+
+static int free_share(CASSANDRA_SHARE *share)
+{
+  mysql_mutex_lock(&cassandra_mutex);
+  if (!--share->use_count)
+  {
+    my_hash_delete(&cassandra_open_tables, (uchar*) share);
+    thr_lock_delete(&share->lock);
+    mysql_mutex_destroy(&share->mutex);
+    my_free(share);
+  }
+  mysql_mutex_unlock(&cassandra_mutex);
+
+  return 0;
+}
+
+
+static handler* cassandra_create_handler(handlerton *hton,
+                                       TABLE_SHARE *table, 
+                                       MEM_ROOT *mem_root)
+{
+  return new (mem_root) ha_cassandra(hton, table);
+}
+
+
+ha_cassandra::ha_cassandra(handlerton *hton, TABLE_SHARE *table_arg)
+  :handler(hton, table_arg),
+   se(NULL), names_and_vals(NULL)
+{}
+
+
+static const char *ha_cassandra_exts[] = {
+  NullS
+};
+
+const char **ha_cassandra::bas_ext() const
+{
+  return ha_cassandra_exts;
+}
+
+
+int ha_cassandra::open(const char *name, int mode, uint test_if_locked)
+{
+  DBUG_ENTER("ha_cassandra::open");
+
+  if (!(share = get_share(name, table)))
+    DBUG_RETURN(1);
+  thr_lock_data_init(&share->lock,&lock,NULL);
+  
+  ha_table_option_struct *options= table->s->option_struct;
+  fprintf(stderr, "ha_cass: open thrift_host=%s keyspace=%s column_family=%s\n", 
+          options->host, options->keyspace, options->column_family);
+  
+  DBUG_ASSERT(!se);
+  if (!options->host || !options->keyspace || !options->column_family)
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  se= get_cassandra_se();
+  se->set_column_family(options->column_family);
+  if (se->connect(options->host, options->keyspace))
+  {
+    my_error(ER_CONNECT_TO_FOREIGN_DATA_SOURCE, MYF(0), se->error_str());
+    DBUG_RETURN(HA_ERR_NO_CONNECTION);
+  }
+
+  DBUG_RETURN(0);
+}
+
+
+int ha_cassandra::close(void)
+{
+  DBUG_ENTER("ha_cassandra::close");
+  delete se;
+  se= NULL;
+  if (names_and_vals)
+  {
+    my_free(names_and_vals);
+    names_and_vals= NULL;
+  }
+  DBUG_RETURN(free_share(share));
+}
+
+
+/**
+  @brief
+  create() is called to create a database. The variable name will have the name
+  of the table.
+
+  @details
+  When create() is called you do not need to worry about
+  opening the table. Also, the .frm file will have already been
+  created so adjusting create_info is not necessary. You can overwrite
+  the .frm file at this point if you wish to change the table
+  definition, but there are no methods currently provided for doing
+  so.
+
+  Called from handle.cc by ha_create_table().
+
+  @see
+  ha_create_table() in handle.cc
+*/
+
+int ha_cassandra::create(const char *name, TABLE *table_arg,
+                         HA_CREATE_INFO *create_info)
+{
+  ha_table_option_struct *options= table_arg->s->option_struct;
+  DBUG_ENTER("ha_cassandra::create");
+  DBUG_ASSERT(options);
+  //psergey-todo: This is called for CREATE TABLE... check options here.
+  
+/*
+  if (table_arg->s->fields != 2)
+  {
+    my_error(ER_WRONG_COLUMN_NAME, MYF(0), "The table must have two fields");
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  }
+*/
+
+  Field **pfield= table_arg->s->field;
+  if (strcmp((*pfield)->field_name, "rowkey"))
+  {
+    my_error(ER_WRONG_COLUMN_NAME, MYF(0), "First column must be named 'rowkey'");
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  }
+
+  if (table_arg->s->keys != 1 || table_arg->s->primary_key !=0 ||
+      table_arg->key_info[0].key_parts != 1 ||
+      table_arg->key_info[0].key_part[0].fieldnr != 1)
+  {
+    my_error(ER_WRONG_COLUMN_NAME, MYF(0), "Table must have one PRIMARY KEY(rowkey)");
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  }
+
+/*
+  pfield++;
+  if (strcmp((*pfield)->field_name, "data"))
+  {
+    my_error(ER_WRONG_COLUMN_NAME, MYF(0), "Second column must be named 'data'");
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  }
+*/
+  
+
+
+#ifndef DBUG_OFF
+/*  
+  DBUG_PRINT("info", ("strparam: '%-.64s'  ullparam: %llu  enumparam: %u  "\
+                      "boolparam: %u",
+                      (options->strparam ? options->strparam : "<NULL>"),
+                      options->ullparam, options->enumparam, options->boolparam));
+
+  psergey-todo: check table definition!
+  for (Field **field= table_arg->s->field; *field; field++)
+  {
+    ha_field_option_struct *field_options= (*field)->option_struct;
+    DBUG_ASSERT(field_options);
+    DBUG_PRINT("info", ("field: %s  complex: '%-.64s'",
+                         (*field)->field_name,
+                         (field_options->complex_param_to_parse_it_in_engine ?
+                          field_options->complex_param_to_parse_it_in_engine :
+                          "<NULL>")));
+  }
+*/
+#endif
+  DBUG_ASSERT(!se);
+  if (!options->host || !options->keyspace || !options->column_family)
+    DBUG_RETURN(HA_WRONG_CREATE_OPTION);
+  se= get_cassandra_se();
+  se->set_column_family(options->column_family);
+  if (se->connect(options->host, options->keyspace))
+  {
+    my_error(ER_CONNECT_TO_FOREIGN_DATA_SOURCE, MYF(0), se->error_str());
+    DBUG_RETURN(HA_ERR_NO_CONNECTION);
+  }
+
+  /* 
+    TODO: what about mapping the primary key? It has a 'type', too...
+    see CfDef::key_validation_class ? see also CfDef::key_alias?
+  */
+  se->first_ddl_column();
+  char *col_name;
+  int  col_name_len;
+  char *col_type;
+  int col_type_len;
+  while (!se->next_ddl_column(&col_name, &col_name_len, &col_type,
+                              &col_type_len))
+  {
+    /* Mapping for the 1st field is already known */
+    for (Field **field= table_arg->s->field + 1; *field; field++)
+    {
+      if (!strcmp((*field)->field_name, col_name))
+      {
+        //map_field_to_type(field, col_type);
+      }
+    }
+  }
+
+  DBUG_RETURN(0);
+}
+
+/*
+  Mapping needs to
+  - copy value from MySQL record to Thrift buffer
+  - copy value from Thrift bufer to MySQL record..
+
+*/
+
+const char * const validator_bigint="org.apache.cassandra.db.marshal.LongType";
+const char * const validator_int="org.apache.cassandra.db.marshal.Int32Type";
+const char * const validator_counter= "org.apache.cassandra.db.marshal.CounterColumnType";
+
+const char * const validator_float= "org.apache.cassandra.db.marshal.FloatType";
+const char * const validator_double= "org.apache.cassandra.db.marshal.DoubleType";
+
+void map_field_to_type(Field *field, const char *validator_name)
+{
+  switch(field->type()) {
+    case MYSQL_TYPE_TINY:
+    case MYSQL_TYPE_SHORT:
+    case MYSQL_TYPE_LONG:
+    case MYSQL_TYPE_LONGLONG:
+      if (!strcmp(validator_name, validator_bigint))
+      {
+        //setup bigint validator
+      }
+      break;
+    case MYSQL_TYPE_FLOAT:
+      if (!strcmp(validator_name, validator_float))
+      break;
+    case MYSQL_TYPE_DOUBLE:
+      if (!strcmp(validator_name, validator_double))
+      break;
+    default:
+      DBUG_ASSERT(0);
+  }
+}
+
+
+void store_key_image_to_rec(Field *field, uchar *ptr, uint len);
+
+int ha_cassandra::index_read_map(uchar *buf, const uchar *key,
+                               key_part_map keypart_map,
+                               enum ha_rkey_function find_flag)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::index_read_map");
+  
+  if (find_flag != HA_READ_KEY_EXACT)
+    DBUG_RETURN(HA_ERR_WRONG_COMMAND);
+
+  // todo: decode the search key.
+  uint key_len= calculate_key_len(table, active_index, key, keypart_map);
+  store_key_image_to_rec(table->field[0], (uchar*)key, key_len);
+
+  char buff[256]; 
+  String tmp(buff,sizeof(buff), &my_charset_bin);
+  tmp.length(0);
+  String *str;
+  str= table->field[0]->val_str(&tmp);
+  
+  bool found;
+  if (se->get_slice((char*)str->ptr(), str->length(), get_names_and_vals(), &found))
+    rc= HA_ERR_INTERNAL_ERROR;
+  else
+  {
+    if (found)
+    {
+      //NameAndValue *nv= get_names_and_vals();
+      // TODO: walk through the (name, value) pairs and return values.
+    }
+    else
+      rc= HA_ERR_KEY_NOT_FOUND;
+  }
+#ifdef NEW_CODE
+  
+  se->get_slice();
+
+  for each column
+  {
+    find column;
+  }
+#endif
+
+  DBUG_RETURN(rc);
+}
+
+
+int ha_cassandra::write_row(uchar *buf)
+{
+  my_bitmap_map *old_map;
+  char buff[512]; 
+  NameAndValue *tuple;
+  NameAndValue *nv;
+  DBUG_ENTER("ha_cassandra::write_row");
+  
+  /* Temporary malloc-happy code just to get INSERTs to work */
+  nv= tuple= get_names_and_vals();
+  old_map= dbug_tmp_use_all_columns(table, table->read_set);
+
+  for (Field **field= table->field; *field; field++, nv++)
+  {
+    String tmp(buff,sizeof(buff), &my_charset_bin);
+    tmp.length(0);
+    String *str;
+    str= (*field)->val_str(&tmp);
+    nv->name= (char*)(*field)->field_name;
+    nv->value_len= str->length();
+    nv->value= (char*)my_malloc(nv->value_len, MYF(0));
+    memcpy(nv->value, str->ptr(), nv->value_len);
+  }
+  nv->name= NULL;
+  dbug_tmp_restore_column_map(table->read_set, old_map);
+  
+  //invoke!
+  bool res= se->insert(tuple);
+
+  for (nv= tuple; nv->name; nv++)
+  {
+    my_free(nv->value);
+  }
+
+  DBUG_RETURN(res? HA_ERR_INTERNAL_ERROR: 0);
+}
+
+
+NameAndValue *ha_cassandra::get_names_and_vals()
+{
+  if (names_and_vals)
+    return names_and_vals;
+  else
+  {
+    size_t size= sizeof(NameAndValue) * (table->s->fields + 1);
+    names_and_vals= (NameAndValue*)my_malloc(size ,0);
+    memset(names_and_vals, 0, size);
+    return names_and_vals;
+  }
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Dummy implementations start
+/////////////////////////////////////////////////////////////////////////////
+
+
+int ha_cassandra::index_next(uchar *buf)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::index_next");
+  rc= HA_ERR_WRONG_COMMAND;
+  DBUG_RETURN(rc);
+}
+
+
+int ha_cassandra::index_prev(uchar *buf)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::index_prev");
+  rc= HA_ERR_WRONG_COMMAND;
+  DBUG_RETURN(rc);
+}
+
+
+int ha_cassandra::index_first(uchar *buf)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::index_first");
+  rc= HA_ERR_WRONG_COMMAND;
+  DBUG_RETURN(rc);
+}
+
+int ha_cassandra::index_last(uchar *buf)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::index_last");
+  rc= HA_ERR_WRONG_COMMAND;
+  DBUG_RETURN(rc);
+}
+
+int ha_cassandra::rnd_init(bool scan)
+{
+  DBUG_ENTER("ha_cassandra::rnd_init");
+  DBUG_RETURN(0);
+}
+
+int ha_cassandra::rnd_end()
+{
+  DBUG_ENTER("ha_cassandra::rnd_end");
+  DBUG_RETURN(0);
+}
+
+
+int ha_cassandra::rnd_next(uchar *buf)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::rnd_next");
+  rc= HA_ERR_END_OF_FILE;
+  DBUG_RETURN(rc);
+}
+
+void ha_cassandra::position(const uchar *record)
+{
+  DBUG_ENTER("ha_cassandra::position");
+  DBUG_VOID_RETURN;
+}
+
+int ha_cassandra::rnd_pos(uchar *buf, uchar *pos)
+{
+  int rc;
+  DBUG_ENTER("ha_cassandra::rnd_pos");
+  rc= HA_ERR_WRONG_COMMAND;
+  DBUG_RETURN(rc);
+}
+
+ha_rows ha_cassandra::records_in_range(uint inx, key_range *min_key,
+                                     key_range *max_key)
+{
+  DBUG_ENTER("ha_cassandra::records_in_range");
+  DBUG_RETURN(10);                         // low number to force index usage
+}
+
+
+int ha_cassandra::update_row(const uchar *old_data, uchar *new_data)
+{
+
+  DBUG_ENTER("ha_cassandra::update_row");
+  DBUG_RETURN(HA_ERR_WRONG_COMMAND);
+}
+
+
+int ha_cassandra::info(uint flag)
+{
+  DBUG_ENTER("ha_cassandra::info");
+  DBUG_RETURN(0);
+}
+
+
+int ha_cassandra::extra(enum ha_extra_function operation)
+{
+  DBUG_ENTER("ha_cassandra::extra");
+  DBUG_RETURN(0);
+}
+
+
+THR_LOCK_DATA **ha_cassandra::store_lock(THD *thd,
+                                       THR_LOCK_DATA **to,
+                                       enum thr_lock_type lock_type)
+{
+  if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK)
+    lock.type=lock_type;
+  *to++= &lock;
+  return to;
+}
+
+
+int ha_cassandra::external_lock(THD *thd, int lock_type)
+{
+  DBUG_ENTER("ha_cassandra::external_lock");
+  DBUG_RETURN(0);
+}
+
+int ha_cassandra::delete_table(const char *name)
+{
+  DBUG_ENTER("ha_cassandra::delete_table");
+  /* This is not implemented but we want someone to be able that it works. */
+  DBUG_RETURN(0);
+}
+
+
+int ha_cassandra::delete_row(const uchar *buf)
+{
+  DBUG_ENTER("ha_cassandra::delete_row");
+  DBUG_RETURN(HA_ERR_WRONG_COMMAND);
+}
+
+
+int ha_cassandra::delete_all_rows()
+{
+  DBUG_ENTER("ha_cassandra::delete_all_rows");
+  DBUG_RETURN(HA_ERR_WRONG_COMMAND);
+}
+
+
+/**
+  check_if_incompatible_data() called if ALTER TABLE can't detect otherwise
+  if new and old definition are compatible
+
+  @details If there are no other explicit signs like changed number of
+  fields this function will be called by compare_tables()
+  (sql/sql_tables.cc) to decide should we rewrite whole table or only .frm
+  file.
+
+*/
+
+bool ha_cassandra::check_if_incompatible_data(HA_CREATE_INFO *info,
+                                            uint table_changes)
+{
+  //ha_table_option_struct *param_old, *param_new;
+  DBUG_ENTER("ha_cassandra::check_if_incompatible_data");
+
+  DBUG_RETURN(COMPATIBLE_DATA_YES);
+}
+
+
+/////////////////////////////////////////////////////////////////////////////
+// Dummy implementations end
+/////////////////////////////////////////////////////////////////////////////
+
+
+static struct st_mysql_sys_var* cassandra_system_variables[]= {
+//  MYSQL_SYSVAR(enum_var),
+//  MYSQL_SYSVAR(ulong_var),
+  NULL
+};
+
+
+struct st_mysql_storage_engine cassandra_storage_engine=
+{ MYSQL_HANDLERTON_INTERFACE_VERSION };
+
+static struct st_mysql_show_var func_status[]=
+{
+//  {"example_func_example",  (char *)show_func_example, SHOW_FUNC},
+  {0,0,SHOW_UNDEF}
+};
+
+maria_declare_plugin(cassandra)
+{
+  MYSQL_STORAGE_ENGINE_PLUGIN,
+  &cassandra_storage_engine,
+  "CASSANDRA",
+  "Monty Program Ab",
+  "Cassandra storage engine",
+  PLUGIN_LICENSE_GPL,
+  cassandra_init_func,                            /* Plugin Init */
+  cassandra_done_func,                            /* Plugin Deinit */
+  0x0001,                                       /* version number (0.1) */
+  func_status,                                  /* status variables */
+  cassandra_system_variables,                     /* system variables */
+  "0.1",                                        /* string version */
+  MariaDB_PLUGIN_MATURITY_EXPERIMENTAL          /* maturity */
+}
+maria_declare_plugin_end;

storage/cassandra/ha_cassandra.h

+/* 
+  MP AB copyrights 
+*/
+#ifdef USE_PRAGMA_INTERFACE
+#pragma interface			/* gcc class implementation */
+#endif
+
+
+#include "my_global.h"                   /* ulonglong */
+#include "thr_lock.h"                    /* THR_LOCK, THR_LOCK_DATA */
+#include "handler.h"                     /* handler */
+#include "my_base.h"                     /* ha_rows */
+
+#include "cassandra_se.h"
+
+/** @brief
+  CASSANDRA_SHARE is a structure that will be shared among all open handlers.
+  This example implements the minimum of what you will probably need.
+*/
+typedef struct st_cassandra_share {
+  char *table_name;
+  uint table_name_length,use_count;
+  mysql_mutex_t mutex;
+  THR_LOCK lock;
+} CASSANDRA_SHARE;
+
+
+/** @brief
+  Class definition for the storage engine
+*/
+class ha_cassandra: public handler
+{
+  THR_LOCK_DATA lock;      ///< MySQL lock
+  CASSANDRA_SHARE *share;    ///< Shared lock info
+  
+  Cassandra_se_interface *se;
+
+  /* pre-allocated array of #fields elements */
+  NameAndValue *names_and_vals;
+  NameAndValue *get_names_and_vals();
+public:
+  ha_cassandra(handlerton *hton, TABLE_SHARE *table_arg);
+  ~ha_cassandra()
+  {
+    delete se;
+  }
+
+  /** @brief
+    The name that will be used for display purposes.
+   */
+  const char *table_type() const { return "CASSANDRA"; }
+
+  /** @brief
+    The name of the index type that will be used for display.
+    Don't implement this method unless you really have indexes.
+   */
+  const char *index_type(uint inx) { return "HASH"; }
+
+  /** @brief
+    The file extensions.
+   */
+  const char **bas_ext() const;
+
+  /** @brief
+    This is a list of flags that indicate what functionality the storage engine
+    implements. The current table flags are documented in handler.h
+  */
+  ulonglong table_flags() const
+  {
+    /*
+      We are saying that this engine is just statement capable to have
+      an engine that can only handle statement-based logging. This is
+      used in testing.
+    */
+    return HA_BINLOG_STMT_CAPABLE;
+  }
+
+  /** @brief
+    This is a bitmap of flags that indicates how the storage engine
+    implements indexes. The current index flags are documented in
+    handler.h. If you do not implement indexes, just return zero here.
+
+      @details
+    part is the key part to check. First key part is 0.
+    If all_parts is set, MySQL wants to know the flags for the combined
+    index, up to and including 'part'.
+  */
+  ulong index_flags(uint inx, uint part, bool all_parts) const
+  {
+    return 0;
+  }
+
+  /** @brief
+    unireg.cc will call max_supported_record_length(), max_supported_keys(),
+    max_supported_key_parts(), uint max_supported_key_length()
+    to make sure that the storage engine can handle the data it is about to
+    send. Return *real* limits of your storage engine here; MySQL will do
+    min(your_limits, MySQL_limits) automatically.
+   */
+  uint max_supported_record_length() const { return HA_MAX_REC_LENGTH; }
+
+  /* Support only one Primary Key, for now */
+  uint max_supported_keys()          const { return 1; }
+  uint max_supported_key_parts()     const { return 1; }
+
+  /** @brief
+    unireg.cc will call this to make sure that the storage engine can handle
+    the data it is about to send. Return *real* limits of your storage engine
+    here; MySQL will do min(your_limits, MySQL_limits) automatically.
+
+      @details
+    There is no need to implement ..._key_... methods if your engine doesn't
+    support indexes.
+   */
+  uint max_supported_key_length()    const { return 16*1024; /* just to return something*/ }
+  
+  /* At the moment, we're ok with default handler::index_init() implementation. */
+  int index_read_map(uchar * buf, const uchar * key,
+                     key_part_map keypart_map,
+                     enum ha_rkey_function find_flag);
+
+  /** @brief
+    Called in test_quick_select to determine if indexes should be used.
+  */
+  virtual double scan_time() { return (double) (stats.records+stats.deleted) / 20.0+10; }
+
+  /** @brief
+    This method will never be called if you do not implement indexes.
+  */
+  virtual double read_time(uint, uint, ha_rows rows)
+  { return (double) rows /  20.0+1; }
+
+  /*
+    Everything below are methods that we implement in ha_example.cc.
+
+    Most of these methods are not obligatory, skip them and
+    MySQL will treat them as not implemented
+  */
+  /** @brief
+    We implement this in ha_example.cc; it's a required method.
+  */
+  int open(const char *name, int mode, uint test_if_locked);    // required
+
+  /** @brief
+    We implement this in ha_example.cc; it's a required method.
+  */
+  int close(void);                                              // required
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int write_row(uchar *buf);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int update_row(const uchar *old_data, uchar *new_data);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int delete_row(const uchar *buf);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int index_next(uchar *buf);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int index_prev(uchar *buf);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int index_first(uchar *buf);
+
+  /** @brief
+    We implement this in ha_example.cc. It's not an obligatory method;
+    skip it and and MySQL will treat it as not implemented.
+  */
+  int index_last(uchar *buf);
+
+  /** @brief
+    Unlike index_init(), rnd_init() can be called two consecutive times
+    without rnd_end() in between (it only makes sense if scan=1). In this
+    case, the second call should prepare for the new table scan (e.g if
+    rnd_init() allocates the cursor, the second call should position the
+    cursor to the start of the table; no need to deallocate and allocate
+    it again. This is a required method.
+  */
+  int rnd_init(bool scan);                                      //required
+  int rnd_end();
+  int rnd_next(uchar *buf);                                     ///< required
+  int rnd_pos(uchar *buf, uchar *pos);                          ///< required
+  void position(const uchar *record);                           ///< required
+  int info(uint);                                               ///< required
+  int extra(enum ha_extra_function operation);
+  int external_lock(THD *thd, int lock_type);                   ///< required
+  int delete_all_rows(void);
+  ha_rows records_in_range(uint inx, key_range *min_key,
+                           key_range *max_key);
+  int delete_table(const char *from);
+  int create(const char *name, TABLE *form,
+             HA_CREATE_INFO *create_info);                      ///< required
+  bool check_if_incompatible_data(HA_CREATE_INFO *info,
+                                  uint table_changes);
+
+  THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
+                             enum thr_lock_type lock_type);     ///< required
+};