Client-Server Protocol 4.1 changes - Client side:

  - Support of prepared execution
  - Support of Original Table and Column names
  - Support of direct transactional API
  - And lot of misc handling

  (Note that, the pull will not work, unless you have the Server side changes also which will be followed by this commit)
  

BitKeeper/etc/logging_ok

@@ -67,3 +67,4 @@ venu@work.mysql.com
 worm@altair.is.lan
 zak@balfor.local
 zak@linux.local
+venu@myvenu.com

include/errmsg.h

@@ -61,3 +61,17 @@ extern const char *client_errors[];	/* Error messages */
 #define CR_PROBE_SLAVE_HOSTS    2023
 #define CR_PROBE_SLAVE_CONNECT  2024
 #define CR_PROBE_MASTER_CONNECT 2025
+
+/* new 4.1 error codes */
+#define CR_INVALID_CONN_HANDLE 2026
+#define CR_NULL_POINTER 2027
+#define CR_MEMORY_ERROR 2028
+#define CR_NO_PREPARE_STMT 2029
+#define CR_NOT_ALL_PARAMS_BOUND 2030
+#define CR_DATA_TRUNCATED 2031
+#define CR_NOT_ALL_BUFFERS_BOUND 2032
+#define CR_FAILED_TO_SET_PARAM_DATA 2033
+#define CR_NO_PARAMETERS_EXISTS 2033
+#define CR_INVALID_PARAMETER_NO 2035
+#define CR_INVALID_BUFFER_USE 2036
+

include/mysql.h

@@ -69,8 +69,9 @@ extern char *mysql_unix_port;
 
 typedef struct st_mysql_field {
   char *name;                 /* Name of column */
+  char *org_name;             /* Original column name, if column was an alias */ 
   char *table;                /* Table of column if column was a field */
-  char *org_table;		/* Org table name if table was an alias */
+  char *org_table;            /* Org table name, if table was an alias */
   char *db;                   /* Database for table */
   char *def;                  /* Default value (set by mysql_list_fields) */
   unsigned long length;       /* Width of column */
@@ -101,6 +102,23 @@ typedef struct st_mysql_rows {
 typedef MYSQL_ROWS *MYSQL_ROW_OFFSET;	/* offset to current row */
 
 #include <my_alloc.h>
+#ifndef ST_USED_MEM_DEFINED
+#define ST_USED_MEM_DEFINED
+typedef struct st_used_mem {			/* struct for once_alloc */
+  struct st_used_mem *next;			/* Next block in use */
+  unsigned int	left;				/* memory left in block  */
+  unsigned int	size;				/* size of block */
+} USED_MEM;
+typedef struct st_mem_root {
+  USED_MEM *free;
+  USED_MEM *used;
+  USED_MEM *pre_alloc;
+  unsigned int	min_malloc;
+  unsigned int	block_size;
+
+  void (*error_handler)(void);
+} MEM_ROOT;
+#endif
 
 typedef struct st_mysql_data {
   my_ulonglong rows;
@@ -391,6 +409,82 @@ int             STDCALL mysql_manager_command(MYSQL_MANAGER* con,
 int             STDCALL mysql_manager_fetch_line(MYSQL_MANAGER* con,
 						  char* res_buf,
 						 int res_buf_size);
+
+
+
+/*
+  The following definations are added for the enhanced 
+  client-server protocol
+*/
+
+/* statement state */
+enum MY_STMT_STATE { MY_ST_UNKNOWN, MY_ST_PREPARE, MY_ST_EXECUTE };
+
+/* bind structure */
+typedef struct st_mysql_bind {
+
+  enum enum_field_types buffer_type; /* buffer type */
+  enum enum_field_types field_type;  /* field type */
+  gptr     buffer;                   /* buffer */
+  long     *length;                  /* output length pointer */
+  ulong    buffer_length;            /* buffer length */  
+  ulong    bind_length;              /* internal use */
+  my_bool  is_null;                  /* NULL indicator */
+  my_bool  is_long_data;             /* long data indicator */
+  my_bool  long_ended;               /* internal use */
+
+} MYSQL_BIND;
+
+/* statement handler */
+typedef struct st_mysql_stmt {
+
+  MYSQL         *mysql;                   /* connection handle */
+  MYSQL_BIND    *params;                  /* input parameters */
+  MYSQL_RES     *result;                  /* resultset */
+  MYSQL_BIND    *bind;                    /* row binding */
+  MYSQL_FIELD	  *fields;                  /* prepare meta info */
+  MEM_ROOT      mem_root;                 /* root allocations */
+  ulong         param_count;              /* parameters count */
+  ulong         field_count;              /* fields count */
+  ulong         long_length;              /* long buffer alloced length */
+  uint          err_no;                   /* error code */
+  char          error[MYSQL_ERRMSG_SIZE]; /* error message */
+  char          *query;                   /* query buffer */
+  char          *long_data;               /* long buffer */
+  enum MY_STMT_STATE state;               /* statement state */
+  my_bool       long_alloced;             /* flag to indicate long alloced */
+  my_bool       types_supplied;           /* to indicate types supply */
+
+} MYSQL_STMT;
+
+
+MYSQL_STMT * STDCALL mysql_prepare(MYSQL * mysql, const char *query);
+int STDCALL mysql_execute(MYSQL_STMT * stmt);
+ulong STDCALL mysql_param_count(MYSQL_STMT * stmt);
+int STDCALL mysql_bind_param(MYSQL_STMT * stmt, MYSQL_BIND * bind);
+int STDCALL mysql_bind_result(MYSQL_STMT * stmt, MYSQL_BIND * bind);
+int STDCALL mysql_stmt_close(MYSQL_STMT * stmt);
+uint STDCALL mysql_stmt_errno(MYSQL_STMT * stmt);
+const char *STDCALL mysql_stmt_error(MYSQL_STMT * stmt);
+int STDCALL mysql_commit(MYSQL * mysql);
+int STDCALL mysql_rollback(MYSQL * mysql);
+int STDCALL mysql_autocommit(MYSQL * mysql, my_bool auto_mode);
+int STDCALL mysql_fetch(MYSQL_STMT *stmt);
+my_bool STDCALL mysql_send_long_data(MYSQL_STMT *stmt, 
+				     uint param_number,gptr data, ulong length);
+int STDCALL mysql_multi_query(MYSQL *mysql,const char *query,ulong length);
+MYSQL_RES *STDCALL mysql_next_result(MYSQL *mysql);
+MYSQL_RES * STDCALL mysql_prepare_result(MYSQL_STMT *stmt);
+
+
+/* new status messages */
+#define MYSQL_SUCCESS    0
+#define MYSQL_WARNING    1
+#define MYSQL_ERROR     -1
+#define MYSQL_NO_DATA   100
+#define MYSQL_NEED_DATA  99 
+#define MYSQL_LONG_DATA_END 0xFF
+
 #define mysql_reload(mysql) mysql_refresh((mysql),REFRESH_GRANT)
 
 #ifdef USE_OLD_FUNCTIONS

include/mysql_com.h

@@ -42,7 +42,8 @@ enum enum_server_command {COM_SLEEP,COM_QUIT,COM_INIT_DB,COM_QUERY,
 			  COM_DEBUG,COM_PING,COM_TIME,COM_DELAYED_INSERT,
 			  COM_CHANGE_USER, COM_BINLOG_DUMP,
                           COM_TABLE_DUMP, COM_CONNECT_OUT,
-			  COM_REGISTER_SLAVE};
+			  COM_REGISTER_SLAVE,
+			  COM_PREPARE,COM_EXECUTE,COM_LONG_DATA };
 
 #define NOT_NULL_FLAG	1		/* Field can't be NULL */
 #define PRI_KEY_FLAG	2		/* Field is part of a primary key */
@@ -96,6 +97,7 @@ enum enum_server_command {COM_SLEEP,COM_QUIT,COM_INIT_DB,COM_QUERY,
 #define CLIENT_SSL              2048     /* Switch to SSL after handshake */
 #define CLIENT_IGNORE_SIGPIPE   4096     /* IGNORE sigpipes */
 #define CLIENT_TRANSACTIONS	8192	/* Client knows about transactions */
+#define CLIENT_PROTOCOL_41       16384   /* New 4.1 protocol  */
 
 #define SERVER_STATUS_IN_TRANS  1	/* Transaction has started */
 #define SERVER_STATUS_AUTOCOMMIT 2	/* Server in auto_commit mode */
@@ -136,27 +138,64 @@ typedef struct st_net {
 
 #define packet_error (~(unsigned long) 0)
 
-enum enum_field_types { FIELD_TYPE_DECIMAL, FIELD_TYPE_TINY,
-			FIELD_TYPE_SHORT,  FIELD_TYPE_LONG,
-			FIELD_TYPE_FLOAT,  FIELD_TYPE_DOUBLE,
-			FIELD_TYPE_NULL,   FIELD_TYPE_TIMESTAMP,
-			FIELD_TYPE_LONGLONG,FIELD_TYPE_INT24,
-			FIELD_TYPE_DATE,   FIELD_TYPE_TIME,
-			FIELD_TYPE_DATETIME, FIELD_TYPE_YEAR,
-			FIELD_TYPE_NEWDATE,
-			FIELD_TYPE_ENUM=247,
-			FIELD_TYPE_SET=248,
-			FIELD_TYPE_TINY_BLOB=249,
-			FIELD_TYPE_MEDIUM_BLOB=250,
-			FIELD_TYPE_LONG_BLOB=251,
-			FIELD_TYPE_BLOB=252,
-			FIELD_TYPE_VAR_STRING=253,
-			FIELD_TYPE_STRING=254,
-			FIELD_TYPE_GEOMETRY=255
+enum enum_field_types { MYSQL_TYPE_DECIMAL, MYSQL_TYPE_TINY,
+			MYSQL_TYPE_SHORT,  MYSQL_TYPE_LONG,
+			MYSQL_TYPE_FLOAT,  MYSQL_TYPE_DOUBLE,
+			MYSQL_TYPE_NULL,   MYSQL_TYPE_TIMESTAMP,
+			MYSQL_TYPE_LONGLONG,MYSQL_TYPE_INT24,
+			MYSQL_TYPE_DATE,   MYSQL_TYPE_TIME,
+			MYSQL_TYPE_DATETIME, MYSQL_TYPE_YEAR,
+			MYSQL_TYPE_NEWDATE,      
+			MYSQL_TYPE_ENUM=247,
+			MYSQL_TYPE_SET=248,
+			MYSQL_TYPE_TINY_BLOB=249,
+			MYSQL_TYPE_MEDIUM_BLOB=250,
+			MYSQL_TYPE_LONG_BLOB=251,
+			MYSQL_TYPE_BLOB=252,
+			MYSQL_TYPE_VAR_STRING=253,
+			MYSQL_TYPE_STRING=254,
+			MYSQL_TYPE_GEOMETRY=255
+
 };
 
-#define FIELD_TYPE_CHAR FIELD_TYPE_TINY		/* For compability */
-#define FIELD_TYPE_INTERVAL FIELD_TYPE_ENUM	/* For compability */
+/* For backward compatibility */
+#define FIELD_TYPE_DECIMAL     MYSQL_TYPE_DECIMAL		
+#define FIELD_TYPE_TINY        MYSQL_TYPE_TINY				
+#define FIELD_TYPE_SHORT       MYSQL_TYPE_SHORT				
+#define FIELD_TYPE_LONG        MYSQL_TYPE_LONG			
+#define FIELD_TYPE_FLOAT       MYSQL_TYPE_FLOAT				
+#define FIELD_TYPE_DOUBLE      MYSQL_TYPE_DOUBLE			
+#define FIELD_TYPE_NULL        MYSQL_TYPE_NULL			
+#define FIELD_TYPE_TIMESTAMP   MYSQL_TYPE_TIMESTAMP				
+#define FIELD_TYPE_LONGLONG    MYSQL_TYPE_LONGLONG				
+#define FIELD_TYPE_INT24       MYSQL_TYPE_INT24		
+#define FIELD_TYPE_DATE        MYSQL_TYPE_DATE			
+#define FIELD_TYPE_TIME        MYSQL_TYPE_TIME				
+#define FIELD_TYPE_DATETIME    MYSQL_TYPE_DATETIME				
+#define FIELD_TYPE_YEAR        MYSQL_TYPE_YEAR		
+#define FIELD_TYPE_NEWDATE     MYSQL_TYPE_NEWDATE				
+#define FIELD_TYPE_ENUM        MYSQL_TYPE_ENUM			
+#define FIELD_TYPE_SET         MYSQL_TYPE_SET				
+#define FIELD_TYPE_TINY_BLOB   MYSQL_TYPE_TINY_BLOB				
+#define FIELD_TYPE_MEDIUM_BLOB MYSQL_TYPE_MEDIUM_BLOB	
+#define FIELD_TYPE_LONG_BLOB   MYSQL_TYPE_LONG_BLOB
+#define FIELD_TYPE_BLOB        MYSQL_TYPE_BLOB	
+#define FIELD_TYPE_VAR_STRING  MYSQL_TYPE_VAR_STRING				
+#define FIELD_TYPE_STRING      MYSQL_TYPE_STRING	
+#define FIELD_TYPE_CHAR        MYSQL_TYPE_TINY	
+#define FIELD_TYPE_INTERVAL    MYSQL_TYPE_ENUM
+#define FIELD_TYPE_GEOMETRY    MYSQL_TYPE_GEOMETRY	
+
+#if TO_BE_INCLUDED_LATER
+/* For bind applications, to indicate unsigned buffers */
+#define MYSQL_TYPE_UTINY     -10
+#define MYSQL_TYPE_USHORT    -9
+#define MYSQL_TYPE_ULONG     -8
+#define MYSQL_TYPE_UFLOAT    -7
+#define MYSQL_TYPE_UDOUBLE   -6
+#define MYSQL_TYPE_ULONGLONG -5
+#define MYSQL_TYPE_UINT24    -4
+#endif
 
 #define net_new_transaction(net) ((net)->pkt_nr=0)
 
@@ -251,5 +290,6 @@ void my_thread_end(void);
 #endif
 
 #define NULL_LENGTH ((unsigned long) ~0) /* For net_store_length */
+#define MYSQL_LONG_DATA_END 0xFF /* For indication of long data ending */
 
 #endif

libmysql/errmsg.c

@@ -49,7 +49,18 @@ const char *client_errors[]=
   "Error on SHOW SLAVE STATUS:",
   "Error on SHOW SLAVE HOSTS:",
   "Error connecting to slave:",
-  "Error connecting to master:"
+  "Error connecting to master:",
+  "Invalid connection handle",
+  "Invalid use of null pointer",
+  "Memory allocation error",
+  "Statement not prepared",
+  "Not all parameters data supplied",
+  "Data truncated",
+  "Not all parameters bound for the row fetch",
+  "Failed to send the parameter data",
+  "No parameters exists in the statement",
+  "Invalid parameter number",
+  "Can't send long data for non string or binary data types"
 };
 
 /* Start of code added by Roberto M. Serqueira - martinsc@uol.com.br - 05.24.2001 */
@@ -82,7 +93,18 @@ const char *client_errors[]=
   "Error on SHOW SLAVE STATUS:",
   "Error on SHOW SLAVE HOSTS:",
   "Error connecting to slave:",
-  "Error connecting to master:"
+  "Error connecting to master:",
+  "Invalid connection handle",
+  "Invalid use of null pointer",
+  "Memory allocation error",
+  "Statement not prepared",
+  "Not all parameters data supplied",
+  "Data truncated",
+  "Not all parameters bound for the row fetch",
+  "Failed to send the parameter data",
+  "No parameters exists in the statement",
+  "Invalid parameter number",
+  "Can't send long data for non string or binary data types"
 };
 
 #else /* ENGLISH */
@@ -113,7 +135,18 @@ const char *client_errors[]=
   "Error on SHOW SLAVE STATUS:",
   "Error on SHOW SLAVE HOSTS:",
   "Error connecting to slave:",
-  "Error connecting to master:"
+  "Error connecting to master:",
+  "Invalid connection handle",
+  "Invalid use of null pointer",
+  "Memory allocation error",
+  "Statement not prepared",
+  "Not all parameters data supplied",
+  "Data truncated",
+  "Not all parameters bound for the row fetch",
+  "Failed to send the parameter data",
+  "No parameters exists in the statement",
+  "Invalid parameter number",
+  "Can't send long data for non string or binary data types"
 };
 #endif