Merge eherman@bk-internal.mysql.com:/home/bk/mysql-5.0

into mysql.com:/Users/eric/dev/hton-mysql-5.0

mysql-test/r/federated.result

@@ -1457,6 +1457,32 @@ federated.t1	repair	status	OK
 REPAIR TABLE federated.t1 USE_FRM;
 Table	Op	Msg_type	Msg_text
 federated.t1	repair	status	OK
+DROP TABLE IF EXISTS federated.normal_table;
+CREATE TABLE federated.normal_table (
+`id` int(4) NOT NULL,
+`name` varchar(10) default NULL
+) DEFAULT CHARSET=latin1;
+DROP TABLE IF EXISTS federated.alter_me;
+CREATE TABLE federated.alter_me (
+`id` int(4) NOT NULL,
+`name` varchar(10) default NULL,
+PRIMARY KEY (`id`)
+) ENGINE="FEDERATED" DEFAULT CHARSET=latin1
+CONNECTION='mysql://root@127.0.0.1:SLAVE_PORT/federated/normal_table';
+INSERT INTO federated.alter_me (id, name) VALUES (1, 'Monty');
+INSERT INTO federated.alter_me (id, name) VALUES (2, 'David');
+SELECT * FROM federated.alter_me;
+id	name
+1	Monty
+2	David
+ALTER TABLE federated.alter_me MODIFY COLUMN id int(16) NOT NULL;
+ERROR HY000: Table storage engine for 'alter_me' doesn't have this option
+SELECT * FROM federated.alter_me;
+id	name
+1	Monty
+2	David
+DROP TABLE federated.alter_me;
+DROP TABLE federated.normal_table;
 DROP TABLE IF EXISTS federated.t1;
 DROP DATABASE IF EXISTS federated;
 DROP TABLE IF EXISTS federated.t1;

mysql-test/t/federated.test

@@ -1137,11 +1137,53 @@ ORDER BY federated.t1.country_id;
 
 DROP TABLE federated.countries;
 
-# optimize and repair tests
+#BEGIN optimize and repair tests
 OPTIMIZE TABLE federated.t1;
 REPAIR TABLE federated.t1;
 REPAIR TABLE federated.t1 QUICK;
 REPAIR TABLE federated.t1 EXTENDED;
 REPAIR TABLE federated.t1 USE_FRM;
+#END optimize and repair tests
+
+
+# BEGIN ALTER TEST
+connection slave;
+--disable_warnings
+DROP TABLE IF EXISTS federated.normal_table;
+--enable_warnings
+
+CREATE TABLE federated.normal_table (
+  `id` int(4) NOT NULL,
+  `name` varchar(10) default NULL
+  ) DEFAULT CHARSET=latin1;
+
+connection master;
+--disable_warnings
+DROP TABLE IF EXISTS federated.alter_me;
+--enable_warnings
+
+--replace_result $SLAVE_MYPORT SLAVE_PORT
+eval CREATE TABLE federated.alter_me (
+  `id` int(4) NOT NULL,
+  `name` varchar(10) default NULL,
+  PRIMARY KEY (`id`)
+  ) ENGINE="FEDERATED" DEFAULT CHARSET=latin1
+  CONNECTION='mysql://root@127.0.0.1:$SLAVE_MYPORT/federated/normal_table';
+
+INSERT INTO federated.alter_me (id, name) VALUES (1, 'Monty');
+INSERT INTO federated.alter_me (id, name) VALUES (2, 'David');
+
+SELECT * FROM federated.alter_me;
+
+--error 1031
+ALTER TABLE federated.alter_me MODIFY COLUMN id int(16) NOT NULL;
+
+SELECT * FROM federated.alter_me;
+
+DROP TABLE federated.alter_me;
+connection slave;
+DROP TABLE federated.normal_table;
+# END ALTER TEST
+
 
 source include/federated_cleanup.inc;

sql/examples/ha_example.cc

@@ -90,7 +90,7 @@ handlerton example_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 /* Variables for example share methods */

sql/examples/ha_tina.cc

@@ -71,7 +71,7 @@ handlerton tina_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 /*****************************************************************************

sql/ha_blackhole.cc

@@ -43,7 +43,7 @@ handlerton blackhole_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 /*****************************************************************************

sql/ha_federated.cc

@@ -713,7 +713,7 @@ handlerton federated_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_ALTER_NOT_SUPPORTED
 };
 
 

sql/ha_heap.cc

@@ -40,7 +40,7 @@ handlerton heap_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 /*****************************************************************************

sql/ha_myisam.cc

@@ -73,7 +73,7 @@ handlerton myisam_hton= {
     MyISAM doesn't support transactions and doesn't have
     transaction-dependent context: cursors can survive a commit.
   */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 // collect errors printed by mi_check routines

sql/ha_myisammrg.cc

@@ -51,7 +51,7 @@ handlerton myisammrg_hton= {
   NULL,    /* create_cursor_read_view */
   NULL,    /* set_cursor_read_view */
   NULL,    /* close_cursor_read_view */
-  HTON_NO_FLAGS
+  HTON_CAN_RECREATE
 };
 
 

sql/handler.cc

@@ -183,6 +183,23 @@ const char *ha_get_storage_engine(enum db_type db_type)
   return "none";
 }
 
+bool ha_check_storage_engine_flag(enum db_type db_type, uint32 flag)
+{
+  show_table_type_st *types;
+  for (types= sys_table_types; types->type; types++)
+  {
+    if (db_type == types->db_type)
+    {
+      if (types->ht->flags & flag)
+        return TRUE;
+      else
+        return FALSE;
+    }
+  }
+
+  return FALSE;
+}
+
 
 my_bool ha_storage_engine_is_enabled(enum db_type database_type)
 {

sql/handler.h

@@ -377,8 +377,10 @@ struct show_table_alias_st {
 };
 
 /* Possible flags of a handlerton */
-#define HTON_NO_FLAGS 0
-#define HTON_CLOSE_CURSORS_AT_COMMIT 1
+#define HTON_NO_FLAGS                 0
+#define HTON_CLOSE_CURSORS_AT_COMMIT (1 << 0)
+#define HTON_ALTER_NOT_SUPPORTED     (1 << 1)
+#define HTON_CAN_RECREATE            (1 << 2)
 
 typedef struct st_thd_trans
 {
@@ -848,18 +850,13 @@ extern ulong total_ha, total_ha_2pc;
 #define ha_commit(thd) (ha_commit_trans((thd), TRUE))
 #define ha_rollback(thd) (ha_rollback_trans((thd), TRUE))
 
-#define ha_supports_generate(T) (T != DB_TYPE_INNODB && \
-                                 T != DB_TYPE_BERKELEY_DB && \
-                                 T != DB_TYPE_ARCHIVE_DB && \
-                                 T != DB_TYPE_FEDERATED_DB && \
-                                 T != DB_TYPE_NDBCLUSTER)
-
 /* lookups */
 enum db_type ha_resolve_by_name(const char *name, uint namelen);
 const char *ha_get_storage_engine(enum db_type db_type);
 handler *get_new_handler(TABLE *table, enum db_type db_type);
 enum db_type ha_checktype(THD *thd, enum db_type database_type,
                           bool no_substitute, bool report_error);
+bool ha_check_storage_engine_flag(enum db_type db_type, uint32 flag);
 
 /* basic stuff */
 int ha_init(void);

sql/sql_delete.cc

@@ -787,7 +787,7 @@ bool mysql_truncate(THD *thd, TABLE_LIST *table_list, bool dont_send_ok)
     TABLE *table= *table_ptr;
     table->file->info(HA_STATUS_AUTO | HA_STATUS_NO_LOCK);
     db_type table_type= table->s->db_type;
-    if (!ha_supports_generate(table_type))
+    if (!ha_check_storage_engine_flag(table_type, HTON_CAN_RECREATE))
       goto trunc_by_del;
     strmov(path, table->s->path);
     *table_ptr= table->next;			// Unlink table from list
@@ -818,7 +818,8 @@ bool mysql_truncate(THD *thd, TABLE_LIST *table_list, bool dont_send_ok)
                table_list->db, table_list->table_name);
       DBUG_RETURN(TRUE);
     }
-    if (!ha_supports_generate(table_type) || thd->lex->sphead)
+    if (!ha_check_storage_engine_flag(table_type, HTON_CAN_RECREATE)
+        || thd->lex->sphead)
       goto trunc_by_del;
     if (lock_and_wait_for_table_name(thd, table_list))
       DBUG_RETURN(TRUE);

sql/sql_table.cc

@@ -3156,6 +3156,16 @@ bool mysql_alter_table(THD *thd,char *new_db, char *new_name,
   if (create_info->row_type == ROW_TYPE_NOT_USED)
     create_info->row_type= table->s->row_type;
 
+  DBUG_PRINT("info", ("old type: %d new type: %d", old_db_type, new_db_type));
+  if (ha_check_storage_engine_flag(old_db_type, HTON_ALTER_NOT_SUPPORTED)
+      || ha_check_storage_engine_flag(new_db_type, HTON_ALTER_NOT_SUPPORTED))
+  {
+    DBUG_PRINT("info", ("doesn't support alter"));
+    my_error(ER_ILLEGAL_HA, MYF(0), table_name);
+    DBUG_RETURN(TRUE);
+  }
+  DBUG_PRINT("info", ("supports alter"));
+  
   thd->proc_info="setup";
   if (!(alter_info->flags & ~(ALTER_RENAME | ALTER_KEYS_ONOFF)) &&
       !table->s->tmp_table) // no need to touch frm