HANDLER works only with MyISAM tables

HA_NO_FULLTEXT_KEY property -> HA_CAN_FULLTEXT

sql/ha_berkeley.h

@@ -90,7 +90,7 @@ class ha_berkeley: public handler
 		    HA_REC_NOT_IN_SEQ |
 		    HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER | HA_LASTKEY_ORDER |
 		    HA_LONGLONG_KEYS | HA_NULL_KEY | HA_HAVE_KEY_READ_ONLY |
-		    HA_BLOB_KEY | HA_NOT_EXACT_COUNT | HA_NO_FULLTEXT_KEY |
+		    HA_BLOB_KEY | HA_NOT_EXACT_COUNT |
 		    HA_PRIMARY_KEY_IN_READ_INDEX | HA_DROP_BEFORE_CREATE |
 		    HA_AUTO_PART_KEY),
     changed_rows(0),last_dup_key((uint) -1),version(0),using_ignore(0)

sql/ha_heap.h

@@ -35,7 +35,7 @@ class ha_heap: public handler
   ulong option_flag() const
   { return (HA_READ_RND_SAME | HA_NO_INDEX | HA_ONLY_WHOLE_INDEX |
 	    HA_WRONG_ASCII_ORDER | HA_KEYPOS_TO_RNDPOS | HA_NO_BLOBS |
-	    HA_REC_NOT_IN_SEQ | HA_NO_FULLTEXT_KEY); }
+	    HA_REC_NOT_IN_SEQ); }
   uint max_record_length() const { return HA_MAX_REC_LENGTH; }
   uint max_keys()          const { return MAX_KEY; }
   uint max_key_parts()     const { return MAX_REF_PARTS; }

sql/ha_innobase.h

@@ -79,7 +79,7 @@ class ha_innobase: public handler
 			  HA_KEYPOS_TO_RNDPOS | HA_LASTKEY_ORDER |
 			  HA_HAVE_KEY_READ_ONLY | HA_READ_NOT_EXACT_KEY |
 			  HA_LONGLONG_KEYS | HA_NULL_KEY |
-			  HA_NOT_EXACT_COUNT | HA_NO_FULLTEXT_KEY |
+			  HA_NOT_EXACT_COUNT |
 			  HA_NO_WRITE_DELAYED |
 			  HA_PRIMARY_KEY_IN_READ_INDEX |
 			  HA_DROP_BEFORE_CREATE |

sql/ha_isam.h

@@ -34,7 +34,7 @@ class ha_isam: public handler
 		    HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER | HA_LASTKEY_ORDER |
 		    HA_HAVE_KEY_READ_ONLY | HA_READ_NOT_EXACT_KEY |
 		    HA_LONGLONG_KEYS | HA_KEY_READ_WRONG_STR | HA_DUPP_POS |
-		    HA_NOT_DELETE_WITH_CACHE | HA_NO_FULLTEXT_KEY)
+		    HA_NOT_DELETE_WITH_CACHE)
     {}
   ~ha_isam() {}
   const char *table_type() const { return "ISAM"; }

sql/ha_isammrg.h

@@ -33,7 +33,7 @@ class ha_isammrg: public handler
   const char *table_type() const { return "MRG_ISAM"; }
   const char **bas_ext() const;
   ulong option_flag() const { return HA_READ_RND_SAME | HA_KEYPOS_TO_RNDPOS
-                                   | HA_REC_NOT_IN_SEQ  | HA_NO_FULLTEXT_KEY;}
+                                                      | HA_REC_NOT_IN_SEQ;}
   uint max_record_length() const { return HA_MAX_REC_LENGTH; }
   uint max_keys()          const { return 0; }
   uint max_key_parts()     const { return 0; }

sql/ha_myisam.h

@@ -45,9 +45,10 @@ class ha_myisam: public handler
  public:
   ha_myisam(TABLE *table): handler(table), file(0),
     int_option_flag(HA_READ_NEXT | HA_READ_PREV | HA_READ_RND_SAME |
-		    HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER |  HA_LASTKEY_ORDER |
+		    HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER | HA_LASTKEY_ORDER |
 		    HA_HAVE_KEY_READ_ONLY | HA_READ_NOT_EXACT_KEY |
-		    HA_LONGLONG_KEYS |  HA_NULL_KEY |
+		    HA_LONGLONG_KEYS | HA_NULL_KEY |
+                    HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER |
 		    HA_DUPP_POS | HA_BLOB_KEY | HA_AUTO_PART_KEY),
     enable_activate_all_index(1)
   {}

sql/ha_myisammrg.h

@@ -35,7 +35,7 @@ class ha_myisammrg: public handler
   ulong option_flag() const
     { return (HA_REC_NOT_IN_SEQ | HA_READ_NEXT |
 	      HA_READ_PREV | HA_READ_RND_SAME |
-	      HA_HAVE_KEY_READ_ONLY | HA_NO_FULLTEXT_KEY |
+	      HA_HAVE_KEY_READ_ONLY |
 	      HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER |
 	      HA_LASTKEY_ORDER | HA_READ_NOT_EXACT_KEY |
 	      HA_LONGLONG_KEYS | HA_NULL_KEY | HA_BLOB_KEY); }

sql/handler.h

@@ -76,7 +76,8 @@
 #define HA_NOT_DELETE_WITH_CACHE (HA_NOT_READ_AFTER_KEY*2)
 #define HA_NO_TEMP_TABLES       (HA_NOT_DELETE_WITH_CACHE*2)
 #define HA_NO_PREFIX_CHAR_KEYS	(HA_NO_TEMP_TABLES*2) 
-#define HA_NO_FULLTEXT_KEY      (HA_NO_PREFIX_CHAR_KEYS*2)
+#define HA_CAN_FULLTEXT         (HA_NO_PREFIX_CHAR_KEYS*2)
+#define HA_CAN_SQL_HANDLER      (HA_CAN_FULLTEXT*2)
 
 	/* Parameters for open() (in register form->filestat) */
 	/* HA_GET_INFO does an implicit HA_ABORT_IF_LOCKED */

sql/sql_handler.cc

@@ -43,7 +43,7 @@
   thd->open_tables=thd->handler_tables; \
   thd->handler_tables=tmp; }
 
-static TABLE **find_table_ptr_by_name(THD *thd, const char *db, 
+static TABLE **find_table_ptr_by_name(THD *thd, const char *db,
 				      const char *table_name);
 
 int mysql_ha_open(THD *thd, TABLE_LIST *tables)
@@ -54,6 +54,13 @@ int mysql_ha_open(THD *thd, TABLE_LIST *tables)
   if (err)
     return -1;
 
+  // there can be only one table in *tables
+  if (!(tables->table->file->option_flag() & HA_CAN_SQL_HANDLER))
+  {
+    my_printf_error(ER_ILLEGAL_HA,ER(ER_ILLEGAL_HA),MYF(0), tables->name);
+    return -1;
+  }
+
   send_ok(&thd->net);
   return 0;
 }
@@ -73,7 +80,7 @@ int mysql_ha_close(THD *thd, TABLE_LIST *tables)
   return 0;
 }
 
-static enum enum_ha_read_modes rkey_to_rnext[]= 
+static enum enum_ha_read_modes rkey_to_rnext[]=
     { RNEXT, RNEXT, RPREV, RNEXT, RPREV, RNEXT, RPREV };
 
 int mysql_ha_read(THD *thd, TABLE_LIST *tables,
@@ -166,7 +173,7 @@ int mysql_ha_read(THD *thd, TABLE_LIST *tables,
           if (!(key= (byte*) sql_calloc(ALIGN_SIZE(key_len))))
           {
             send_error(&thd->net,ER_OUTOFMEMORY);
-            goto err; 
+            goto err;
           }
           key_copy(key, table, keyno, key_len);
           err=table->file->index_read(table->record[0],
@@ -176,7 +183,7 @@ int mysql_ha_read(THD *thd, TABLE_LIST *tables,
         }
       default:
           send_error(&thd->net,ER_ILLEGAL_HA);
-          goto err; 
+          goto err;
     }
 
     if (err)
@@ -191,7 +198,7 @@ int mysql_ha_read(THD *thd, TABLE_LIST *tables,
       goto ok;
     }
     if (cond)
-    { 
+    {
       err=err;
       if(!cond->val_int())
         continue;
@@ -234,7 +241,7 @@ err:
 **************************************************************************/
 
 /* Note: this function differs from find_locked_table() because we're looking
-   here for alias, not real table name 
+   here for alias, not real table name
  */
 static TABLE **find_table_ptr_by_name(THD *thd, const char *db,
 				      const char *table_name)
@@ -244,7 +251,7 @@ static TABLE **find_table_ptr_by_name(THD *thd, const char *db,
 
   if (!db || ! *db)
     db= thd->db ? thd->db : "";
-  dblen=strlen(db)+1;  
+  dblen=strlen(db)+1;
   ptr=&(thd->handler_tables);
 
   for (TABLE *table=*ptr; table ; table=*ptr)

sql/sql_table.cc

@@ -430,7 +430,7 @@ int mysql_create_table(THD *thd,const char *db, const char *table_name,
 
     if (key->type == Key::FULLTEXT)
     {
-      if (file->option_flag() & HA_NO_FULLTEXT_KEY)
+      if (!(file->option_flag() & HA_CAN_FULLTEXT))
       {
         my_error(ER_TABLE_CANT_HANDLE_FULLTEXT, MYF(0));
         DBUG_RETURN(-1);