A temporary solution to make CREATE TABLE attributes

to work when a table is partitioned

mysql-test/r/partition_example.result

@@ -0,0 +1,31 @@
+install plugin example soname 'ha_example.so';
+create table t1 (a int not null)
+engine=example
+partition by list (a)
+(partition p0 values in (1), partition p1 values in (2));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) NOT NULL
+) ENGINE=EXAMPLE DEFAULT CHARSET=latin1
+/*!50100 PARTITION BY LIST (a)
+(PARTITION p0 VALUES IN (1) ENGINE = EXAMPLE,
+ PARTITION p1 VALUES IN (2) ENGINE = EXAMPLE) */
+drop table t1;
+create table t1 (a int not null)
+engine=example ull=12340
+partition by list (a)
+(partition p0 values in (1), partition p1 values in (2));
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) NOT NULL
+) ENGINE=EXAMPLE DEFAULT CHARSET=latin1 `ull`=12340
+/*!50100 PARTITION BY LIST (a)
+(PARTITION p0 VALUES IN (1) ENGINE = EXAMPLE,
+ PARTITION p1 VALUES IN (2) ENGINE = EXAMPLE) */
+drop table t1;
+select 1;
+1
+1
+uninstall plugin example;

mysql-test/t/partition_example-master.opt

@@ -0,0 +1 @@
+$EXAMPLE_PLUGIN_OPT

mysql-test/t/partition_example.test

@@ -0,0 +1,23 @@
+--source include/not_windows_embedded.inc
+--source include/have_example_plugin.inc
+--source include/have_partition.inc
+
+--replace_regex /\.dll/.so/
+eval install plugin example soname $HA_EXAMPLE_SO;
+
+create table t1 (a int not null)
+engine=example
+partition by list (a)
+(partition p0 values in (1), partition p1 values in (2));
+show create table t1;
+drop table t1;
+
+create table t1 (a int not null)
+engine=example ull=12340
+partition by list (a)
+(partition p0 values in (1), partition p1 values in (2));
+show create table t1;
+drop table t1;
+
+select 1;
+uninstall plugin example;

mysql-test/t/plugin.test

@@ -131,7 +131,7 @@ SET @@SQL_MODE=@OLD_SQL_MODE;
 # The only preparable statement above was CREATE TABLE. 
 # We need to prepare another statement here to force the
 # previous one to be deallocated (mysqltest reuses the same handle)
-# and to unlock all thread-local plugin locks. Otherwise it won't
+# and to unlock all thread-local plugin locks. Otherwise the plugin won't
 # uninstall.
 #
 select 1;

sql/ha_partition.cc

@@ -1219,9 +1219,7 @@ int ha_partition::prepare_new_partition(TABLE *tbl,
   DBUG_ENTER("prepare_new_partition");
 
   if ((error= set_up_table_before_create(tbl, part_name, create_info,
-                                         0, p_elem)) ||
+                                         0, p_elem)))
-      parse_engine_table_options(ha_thd(), file->ht,
-                                 file->table_share))
     goto error_create;
   if ((error= file->ha_create(part_name, tbl, create_info)))
   {

sql/ha_partition.h

@@ -1113,4 +1113,27 @@ public:
     -------------------------------------------------------------------------
     virtual void append_create_info(String *packet)
   */
+
+  /*
+    the following heavily relies on the fact that all partitions
+    are in the same storage engine.
+
+    When this limitation is lifted, the following hack should go away,
+    and a proper interface for engines needs to be introduced:
+
+      an PARTITION_SHARE structure that has a pointer to the TABLE_SHARE.
+      is given to engines everywhere where TABLE_SHARE is used now
+      has members like option_struct, ha_data
+      perhaps TABLE needs to be split the same way too...
+
+    this can also be done before partition will support a mix of engines,
+    but preferably together with other incompatible API changes.
+  */
+  virtual handlerton *partition_ht() const
+  {
+    handlerton *h= m_file[0]->ht;
+    for (int i=1; i < m_tot_parts; i++)
+      DBUG_ASSERT(h == m_file[i]->ht);
+    return h;
+  }
 };

sql/handler.cc

@@ -3720,9 +3720,6 @@ int ha_create_table(THD *thd, const char *path,
 
   name= get_canonical_filename(table.file, share.path.str, name_buff);
 
-  if (parse_engine_table_options(thd, table.file->ht, &share))
-    goto err;
-
   error= table.file->ha_create(name, &table, create_info);
 
   VOID(closefrm(&table, 0));

sql/handler.h

@@ -2230,6 +2230,10 @@ private:
   virtual int rename_partitions(const char *path)
   { return HA_ERR_WRONG_COMMAND; }
   friend class ha_partition;
+public:
+  /* XXX to be removed, see ha_partition::partition_ht() */
+  virtual handlerton *partition_ht() const
+  { return ht; }
 };
 
 

sql/sql_table.cc

@@ -3445,7 +3445,7 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
 
   if (parse_option_list(thd, &create_info->option_struct,
                           create_info->option_list,
-                          create_info->db_type->table_options, FALSE,
+                          file->partition_ht()->table_options, FALSE,
                           thd->mem_root))
       DBUG_RETURN(TRUE);
 

sql/table.cc

@@ -1636,7 +1636,7 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
     if (engine_table_options_frm_read(options, options_len, share))
       goto free_and_err;
   }
-  if (parse_engine_table_options(thd, handler_file->ht, share))
+  if (parse_engine_table_options(thd, handler_file->partition_ht(), share))
     goto free_and_err;
   my_free(buff, MYF(MY_ALLOW_ZERO_PTR));