Make handler::{write,delete,update}_row private. It's critical

that the entire server uses their public ha_* counterparts instead,
since only then we can ensure proper tracing of these calls that
is necessary for Bug#12713.
A pre-requisite for Bug#12713 "Error in a stored function called from 
a SELECT doesn't cause ROLLBACK of statem"


sql/ha_partition.cc:
  Use ha_write_row, ha_update_row, ha_delete_row instead of now-private
  write_row, update_row, delete_row. 
  In future ha_* calls will contain more than just a call to the binary
  log, so it's essential they are used consistently everywhere in the server.
  
  Disable the undesired effect of double binary logging of changes
  to partitioned tables with tmp_disable_binlog.
sql/handler.h:
  Make write_row, update_row, delete_row private. It's critical
  that the entire code base uses ha_write_row, ha_update_row, ha_delete_row
  instead -- in future, ha_* counterparts will have more common
  functionality than just a call to the binary log.
sql/sql_select.cc:
  Use ha_write_row, ha_update_row, ha_delete_row instead of
  write_row, update_row, delete_row respectively. 
  The change affects the join execution code that works with an
  intermediate internal temporary table. Do not disable binary logging,
  since it's unnecessary - temporary tables are not replicated
  by row level replication.
sql/sql_table.cc:
  Use ha_write_row in copy_data_between_tables - the function
  that writes data from the original table to a temporary copy
  when executing ALTER TABLE. Do not disable binary logging
  since temporary tables are not replicated by row level 
  replication anyway.

mysql-test/r/bdb_notembedded.result

+set autocommit=1;
+reset master;
+create table bug16206 (a int);
+insert into bug16206 values(1);
+start transaction;
+insert into bug16206 values(2);
+commit;
+show binlog events;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+f	n	Format_desc	1	n	Server ver: VERSION, Binlog ver: 4
+f	n	Query	1	n	use `test`; create table bug16206 (a int)
+f	n	Query	1	n	use `test`; insert into bug16206 values(1)
+f	n	Query	1	n	use `test`; insert into bug16206 values(2)
+drop table bug16206;
+reset master;
+create table bug16206 (a int) engine=         bdb;
+insert into bug16206 values(0);
+insert into bug16206 values(1);
+start transaction;
+insert into bug16206 values(2);
+commit;
+insert into bug16206 values(3);
+show binlog events;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+f	n	Format_desc	1	n	Server ver: VERSION, Binlog ver: 4
+f	n	Query	1	n	use `test`; create table bug16206 (a int) engine=         bdb
+f	n	Query	1	n	use `test`; insert into bug16206 values(0)
+f	n	Query	1	n	use `test`; insert into bug16206 values(1)
+f	n	Query	1	n	use `test`; BEGIN
+f	n	Query	1	n	use `test`; insert into bug16206 values(2)
+f	n	Query	1	n	use `test`; COMMIT
+f	n	Query	1	n	use `test`; insert into bug16206 values(3)
+drop table bug16206;
+set autocommit=0;
+End of 5.0 tests

mysql-test/t/bdb_notembedded.test

+-- source include/not_embedded.inc
+-- source include/have_bdb.inc
+
+#
+# Bug #16206: Superfluous COMMIT event in binlog when updating BDB in autocommit mode
+#
+set autocommit=1;
+
+let $VERSION=`select version()`;
+
+reset master;
+create table bug16206 (a int);
+insert into bug16206 values(1);
+start transaction;
+insert into bug16206 values(2);
+commit;
+--replace_result $VERSION VERSION
+--replace_column 1 f 2 n 5 n
+show binlog events;
+drop table bug16206;
+
+reset master;
+create table bug16206 (a int) engine=         bdb;
+insert into bug16206 values(0);
+insert into bug16206 values(1);
+start transaction;
+insert into bug16206 values(2);
+commit;
+insert into bug16206 values(3);
+--replace_result $VERSION VERSION
+--replace_column 1 f 2 n 5 n
+show binlog events;
+drop table bug16206;
+
+set autocommit=0;
+
+
+--echo End of 5.0 tests

sql/ha_partition.cc

@@ -1574,9 +1574,13 @@ int ha_partition::copy_partitions(ulonglong *copied, ulonglong *deleted)
       }
       else
       {
+        THD *thd= ha_thd();
         /* Copy record to new handler */
         copied++;
-        if ((result= m_new_file[new_part]->write_row(m_rec0)))
+        tmp_disable_binlog(thd); /* Do not replicate the low-level changes. */
+        result= m_new_file[new_part]->ha_write_row(m_rec0);
+        reenable_binlog(thd);
+        if (result)
           goto error;
       }
     }
@@ -2694,6 +2698,7 @@ int ha_partition::write_row(uchar * buf)
   longlong func_value;
   bool autoincrement_lock= FALSE;
   my_bitmap_map *old_map;
+  THD *thd= ha_thd();
 #ifdef NOT_NEEDED
   uchar *rec0= m_rec0;
 #endif
@@ -2765,7 +2770,9 @@ int ha_partition::write_row(uchar * buf)
   }
   m_last_part= part_id;
   DBUG_PRINT("info", ("Insert in partition %d", part_id));
-  error= m_file[part_id]->write_row(buf);
+  tmp_disable_binlog(thd); /* Do not replicate the low-level changes. */
+  error= m_file[part_id]->ha_write_row(buf);
+  reenable_binlog(thd);
 exit:
   if (autoincrement_lock)
     pthread_mutex_unlock(&table_share->mutex);
@@ -2806,6 +2813,7 @@ exit:
 
 int ha_partition::update_row(const uchar *old_data, uchar *new_data)
 {
+  THD *thd= ha_thd();
   uint32 new_part_id, old_part_id;
   int error= 0;
   longlong func_value;
@@ -2840,16 +2848,25 @@ int ha_partition::update_row(const uchar *old_data, uchar *new_data)
   if (new_part_id == old_part_id)
   {
     DBUG_PRINT("info", ("Update in partition %d", new_part_id));
-    error= m_file[new_part_id]->update_row(old_data, new_data);
+    tmp_disable_binlog(thd); /* Do not replicate the low-level changes. */
+    error= m_file[new_part_id]->ha_update_row(old_data, new_data);
+    reenable_binlog(thd);
     goto exit;
   }
   else
   {
     DBUG_PRINT("info", ("Update from partition %d to partition %d",
 			old_part_id, new_part_id));
-    if ((error= m_file[new_part_id]->write_row(new_data)))
+    tmp_disable_binlog(thd); /* Do not replicate the low-level changes. */
+    error= m_file[new_part_id]->ha_write_row(new_data);
+    reenable_binlog(thd);
+    if (error)
       goto exit;
-    if ((error= m_file[old_part_id]->delete_row(old_data)))
+
+    tmp_disable_binlog(thd); /* Do not replicate the low-level changes. */
+    error= m_file[old_part_id]->ha_delete_row(old_data);
+    reenable_binlog(thd);
+    if (error)
     {
 #ifdef IN_THE_FUTURE
       (void) m_file[new_part_id]->delete_last_inserted_row(new_data);
@@ -3980,7 +3997,7 @@ int ha_partition::partition_scan_set_up(uchar * buf, bool idx_read_flag)
 
 int ha_partition::handle_unordered_next(uchar *buf, bool is_next_same)
 {
-  handler *file= file= m_file[m_part_spec.start_part];
+  handler *file= m_file[m_part_spec.start_part];
   int error;
   DBUG_ENTER("ha_partition::handle_unordered_next");
 

sql/handler.h

@@ -1674,22 +1674,6 @@ public:
 					 uint table_changes)
  { return COMPATIBLE_DATA_NO; }
 
- /** These are only called from sql_select for internal temporary tables */
-  virtual int write_row(uchar *buf __attribute__((unused)))
-  {
-    return HA_ERR_WRONG_COMMAND;
-  }
-
-  virtual int update_row(const uchar *old_data __attribute__((unused)),
-                         uchar *new_data __attribute__((unused)))
-  {
-    return HA_ERR_WRONG_COMMAND;
-  }
-
-  virtual int delete_row(const uchar *buf __attribute__((unused)))
-  {
-    return HA_ERR_WRONG_COMMAND;
-  }
   /**
     use_hidden_primary_key() is called in case of an update/delete when
     (table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
@@ -1721,6 +1705,21 @@ private:
   */
   virtual int rnd_init(bool scan)= 0;
   virtual int rnd_end() { return 0; }
+  virtual int write_row(uchar *buf __attribute__((unused)))
+  {
+    return HA_ERR_WRONG_COMMAND;
+  }
+
+  virtual int update_row(const uchar *old_data __attribute__((unused)),
+                         uchar *new_data __attribute__((unused)))
+  {
+    return HA_ERR_WRONG_COMMAND;
+  }
+
+  virtual int delete_row(const uchar *buf __attribute__((unused)))
+  {
+    return HA_ERR_WRONG_COMMAND;
+  }
   /**
     Reset state of file to after 'open'.
     This function is called after every statement for all tables used

sql/sql_select.cc

@@ -10554,13 +10554,13 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
   */
   while (!table->file->rnd_next(new_table.record[1]))
   {
-    write_err= new_table.file->write_row(new_table.record[1]);
+    write_err= new_table.file->ha_write_row(new_table.record[1]);
     DBUG_EXECUTE_IF("raise_error", write_err= HA_ERR_FOUND_DUPP_KEY ;);
     if (write_err)
       goto err;
   }
   /* copy row that filled HEAP table */
-  if ((write_err=new_table.file->write_row(table->record[0])))
+  if ((write_err=new_table.file->ha_write_row(table->record[0])))
   {
     if (new_table.file->is_fatal_error(write_err, HA_CHECK_DUP) ||
 	!ignore_last_dupp_key_error)
@@ -12023,7 +12023,7 @@ end_write(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
     {
       int error;
       join->found_records++;
-      if ((error=table->file->write_row(table->record[0])))
+      if ((error=table->file->ha_write_row(table->record[0])))
       {
         if (!table->file->is_fatal_error(error, HA_CHECK_DUP))
 	  goto end;
@@ -12085,7 +12085,7 @@ end_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
   {						/* Update old record */
     restore_record(table,record[1]);
     update_tmptable_sum_func(join->sum_funcs,table);
-    if ((error=table->file->update_row(table->record[1],
+    if ((error=table->file->ha_update_row(table->record[1],
                                           table->record[0])))
     {
       table->file->print_error(error,MYF(0));	/* purecov: inspected */
@@ -12109,7 +12109,7 @@ end_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
   }
   init_tmptable_sum_functions(join->sum_funcs);
   copy_funcs(join->tmp_table_param.items_to_copy);
-  if ((error=table->file->write_row(table->record[0])))
+  if ((error=table->file->ha_write_row(table->record[0])))
   {
     if (create_myisam_from_heap(join->thd, table, &join->tmp_table_param,
 				error, 0))
@@ -12145,7 +12145,7 @@ end_unique_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
   copy_fields(&join->tmp_table_param);		// Groups are copied twice.
   copy_funcs(join->tmp_table_param.items_to_copy);
 
-  if (!(error=table->file->write_row(table->record[0])))
+  if (!(error=table->file->ha_write_row(table->record[0])))
     join->send_records++;			// New group
   else
   {
@@ -12161,7 +12161,7 @@ end_unique_update(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
     }
     restore_record(table,record[1]);
     update_tmptable_sum_func(join->sum_funcs,table);
-    if ((error=table->file->update_row(table->record[1],
+    if ((error=table->file->ha_update_row(table->record[1],
                                           table->record[0])))
     {
       table->file->print_error(error,MYF(0));	/* purecov: inspected */
@@ -12205,7 +12205,7 @@ end_write_group(JOIN *join, JOIN_TAB *join_tab __attribute__((unused)),
                        join->sum_funcs_end[send_group_parts]);
 	if (!join->having || join->having->val_int())
 	{
-          int error= table->file->write_row(table->record[0]);
+          int error= table->file->ha_write_row(table->record[0]);
           if (error && create_myisam_from_heap(join->thd, table,
                                                &join->tmp_table_param,
                                                error, 0))
@@ -13433,7 +13433,7 @@ static int remove_dup_with_compare(THD *thd, TABLE *table, Field **first_field,
     }
     if (having && !having->val_int())
     {
-      if ((error=file->delete_row(record)))
+      if ((error=file->ha_delete_row(record)))
 	goto err;
       error=file->rnd_next(record);
       continue;
@@ -13460,7 +13460,7 @@ static int remove_dup_with_compare(THD *thd, TABLE *table, Field **first_field,
       }
       if (compare_record(table, first_field) == 0)
       {
-	if ((error=file->delete_row(record)))
+	if ((error=file->ha_delete_row(record)))
 	  goto err;
       }
       else if (!found)
@@ -13557,7 +13557,7 @@ static int remove_dup_with_hash_index(THD *thd, TABLE *table,
     }
     if (having && !having->val_int())
     {
-      if ((error=file->delete_row(record)))
+      if ((error=file->ha_delete_row(record)))
 	goto err;
       continue;
     }
@@ -13574,7 +13574,7 @@ static int remove_dup_with_hash_index(THD *thd, TABLE *table,
     if (hash_search(&hash, org_key_pos, key_length))
     {
       /* Duplicated found ; Remove the row */
-      if ((error=file->delete_row(record)))
+      if ((error=file->ha_delete_row(record)))
 	goto err;
     }
     else
@@ -15582,7 +15582,7 @@ int JOIN::rollup_write_data(uint idx, TABLE *table_arg)
           item->save_in_result_field(1);
       }
       copy_sum_funcs(sum_funcs_end[i+1], sum_funcs_end[i]);
-      if ((write_error= table_arg->file->write_row(table_arg->record[0])))
+      if ((write_error= table_arg->file->ha_write_row(table_arg->record[0])))
       {
 	if (create_myisam_from_heap(thd, table_arg, &tmp_table_param,
                                     write_error, 0))

sql/sql_table.cc

@@ -7059,7 +7059,7 @@ copy_data_between_tables(TABLE *from,TABLE *to,
       copy_ptr->do_copy(copy_ptr);
     }
     prev_insert_id= to->file->next_insert_id;
-    error=to->file->write_row(to->record[0]);
+    error=to->file->ha_write_row(to->record[0]);
     to->auto_increment_field_not_null= FALSE;
     if (error)
     {