InnoDB support for HANDLER

mysql-test/r/innodb.result

@@ -920,12 +920,6 @@ create table t1 (t int not null default 1, key (t)) type=innodb;
 desc t1;
 Field	Type	Null	Key	Default	Extra
 t	int(11)		MUL	1	
-handler t1 open t1;
-Table handler for 't1' doesn't have this option
-handler t1 read t first;
-Unknown table 't1' in HANDLER
-handler t1 close;
-Unknown table 't1' in HANDLER
 drop table t1;
 CREATE TABLE t1 (
 number bigint(20) NOT NULL default '0',

mysql-test/r/innodb_handler.result

@@ -0,0 +1,139 @@
+drop table if exists t1;
+create table t1 (a int, b char(10), key a(a), key b(a,b)) type=innodb;
+insert into t1 values
+(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
+(14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
+(20,"ggg"),(21,"hhh"),(22,"iii");
+handler t1 open as t2;
+handler t2 read a first;
+a	b
+14	aaa
+handler t2 read a next;
+a	b
+15	bbb
+handler t2 read a next;
+a	b
+16	ccc
+handler t2 read a prev;
+a	b
+15	bbb
+handler t2 read a last;
+a	b
+22	iii
+handler t2 read a prev;
+a	b
+21	hhh
+handler t2 read a prev;
+a	b
+20	ggg
+handler t2 read a first;
+a	b
+14	aaa
+handler t2 read a prev;
+a	b
+handler t2 read a last;
+a	b
+22	iii
+handler t2 read a prev;
+a	b
+21	hhh
+handler t2 read a next;
+a	b
+22	iii
+handler t2 read a next;
+a	b
+handler t2 read a=(15);
+a	b
+15	bbb
+handler t2 read a=(16);
+a	b
+16	ccc
+handler t2 read a=(19,"fff");
+Too many key parts specified. Max 1 parts allowed
+handler t2 read b=(19,"fff");
+a	b
+19	fff
+handler t2 read b=(19,"yyy");
+a	b
+19	yyy
+handler t2 read b=(19);
+a	b
+19	fff
+handler t1 read a last;
+Unknown table 't1' in HANDLER
+handler t2 read a=(11);
+a	b
+handler t2 read a>=(11);
+a	b
+14	aaa
+handler t2 read a=(18);
+a	b
+18	eee
+handler t2 read a>=(18);
+a	b
+18	eee
+handler t2 read a>(18);
+a	b
+19	fff
+handler t2 read a<=(18);
+a	b
+18	eee
+handler t2 read a<(18);
+a	b
+17	ddd
+handler t2 read a first limit 5;
+a	b
+14	aaa
+15	bbb
+16	ccc
+16	xxx
+17	ddd
+handler t2 read a next  limit 3;
+a	b
+18	eee
+19	fff
+19	yyy
+handler t2 read a prev  limit 10;
+a	b
+19	fff
+18	eee
+17	ddd
+16	xxx
+16	ccc
+15	bbb
+14	aaa
+handler t2 read a>=(16) limit 4;
+a	b
+16	ccc
+16	xxx
+17	ddd
+18	eee
+handler t2 read a>=(16) limit 2,2;
+a	b
+17	ddd
+18	eee
+handler t2 read a last  limit 3;
+a	b
+22	iii
+21	hhh
+20	ggg
+handler t2 read a=(19);
+a	b
+19	fff
+handler t2 read a=(19) where b="yyy";
+a	b
+19	yyy
+handler t2 read first;
+a	b
+17	ddd
+handler t2 read next;
+a	b
+18	eee
+alter table t1 type=innodb;
+handler t2 read next;
+a	b
+19	fff
+handler t2 read last;
+You have an error in your SQL syntax near '' at line 1
+handler t2 close;
+drop table if exists t1;

mysql-test/t/innodb.test

@@ -578,17 +578,11 @@ explain select a,b,c from t1;
 drop table t1;
 
 #
-# Check describe & handler
+# Check describe
 #
 
 create table t1 (t int not null default 1, key (t)) type=innodb;
 desc t1;
---error 1031
-handler t1 open t1;
---error 1109
-handler t1 read t first;
---error 1109
-handler t1 close;
 drop table t1;
 
 #

mysql-test/t/innodb_handler.test

@@ -0,0 +1,69 @@
+-- source include/have_innodb.inc
+
+#
+# test of HANDLER ...
+#
+
+drop table if exists t1;
+create table t1 (a int, b char(10), key a(a), key b(a,b)) type=innodb;
+insert into t1 values
+(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
+(14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
+(20,"ggg"),(21,"hhh"),(22,"iii");
+handler t1 open as t2;
+handler t2 read a first;
+handler t2 read a next;
+handler t2 read a next;
+handler t2 read a prev;
+handler t2 read a last;
+handler t2 read a prev;
+handler t2 read a prev;
+
+handler t2 read a first;
+handler t2 read a prev;
+
+handler t2 read a last;
+handler t2 read a prev;
+handler t2 read a next;
+handler t2 read a next;
+
+handler t2 read a=(15);
+handler t2 read a=(16);
+
+!$1070 handler t2 read a=(19,"fff");
+
+handler t2 read b=(19,"fff");
+handler t2 read b=(19,"yyy");
+handler t2 read b=(19);
+
+!$1109 handler t1 read a last;
+
+handler t2 read a=(11);
+handler t2 read a>=(11);
+
+handler t2 read a=(18);
+handler t2 read a>=(18);
+handler t2 read a>(18);
+handler t2 read a<=(18);
+handler t2 read a<(18);
+
+handler t2 read a first limit 5;
+handler t2 read a next  limit 3;
+handler t2 read a prev  limit 10;
+
+handler t2 read a>=(16) limit 4;
+handler t2 read a>=(16) limit 2,2;
+handler t2 read a last  limit 3;
+
+handler t2 read a=(19);
+handler t2 read a=(19) where b="yyy";
+
+handler t2 read first;
+handler t2 read next;
+alter table t1 type=innodb;
+handler t2 read next;
+!$1064 handler t2 read last;
+
+handler t2 close;
+drop table if exists t1;
+

sql/ha_innodb.cc

@@ -404,7 +404,6 @@ ha_innobase::update_thd(
 	return(0);
 }
 
-#ifdef notdefined
 /* The code here appears for documentational purposes only. Not used
 or tested yet. Will be used in 4.1. */
 /*********************************************************************
@@ -420,9 +419,6 @@ ha_innobase::init_table_handle_for_HANDLER(void)
 {
         row_prebuilt_t* prebuilt;
 
-	ut_a(0); /* the code has not been used or tested yet; to prevent
-		  inadvertent usage we assert an error here */
-
         /* If current thd does not yet have a trx struct, create one.
         If the current handle does not yet have a prebuilt struct, create
         one. Update the trx pointers in the prebuilt struct. Normally
@@ -462,7 +458,6 @@ ha_innobase::init_table_handle_for_HANDLER(void)
 
         prebuilt->read_just_key = FALSE;
 }
-#endif
 
 /*************************************************************************
 Opens an InnoDB database. */

sql/ha_innodb.h

@@ -76,7 +76,7 @@ class ha_innobase: public handler
   	ha_innobase(TABLE *table): handler(table),
 	  int_table_flags(HA_REC_NOT_IN_SEQ |
 			  HA_KEYPOS_TO_RNDPOS | HA_LASTKEY_ORDER |
-			  HA_NULL_KEY |
+			  HA_NULL_KEY | HA_CAN_SQL_HANDLER |
 			  HA_NOT_EXACT_COUNT |
 			  HA_NO_WRITE_DELAYED |
 			  HA_PRIMARY_KEY_IN_READ_INDEX |
@@ -164,8 +164,7 @@ class ha_innobase: public handler
 	void free_foreign_key_create_info(char* str);	
   	THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
 			     		enum thr_lock_type lock_type);
-	/* void init_table_handle_for_HANDLER(); Not tested or used yet, code
+	void init_table_handle_for_HANDLER(); 
-	included for documentational purposes only */
 	longlong get_auto_increment();
 };
 

sql/handler.h

@@ -313,6 +313,8 @@ public:
   virtual void append_create_info(String *packet) {}
   virtual char* get_foreign_key_create_info()
   { return(NULL);}  /* gets foreign key create string from InnoDB */
+  virtual void init_table_handle_for_HANDLER()
+  { return; }       /* prepare InnoDB for HANDLER */  
   virtual void free_foreign_key_create_info(char* str) {} 
   /* The following can be called without an open handler */
   virtual const char *table_type() const =0;

sql/sql_handler.cc

@@ -117,6 +117,7 @@ int mysql_ha_read(THD *thd, TABLE_LIST *tables,
           keyname,tables->name);
       return -1;
     }
+    table->file->index_init(keyno);
   }
 
   List<Item> list;
@@ -127,7 +128,7 @@ int mysql_ha_read(THD *thd, TABLE_LIST *tables,
 
   insert_fields(thd,tables,tables->db,tables->name,&it);
 
-  table->file->index_init(keyno);
+  table->file->init_table_handle_for_HANDLER(); // Only InnoDB requires it
 
   select_limit+=offset_limit;
   send_fields(thd,list,1);