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/* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include "sql_parse.h" // check_one_table_access
#include "sql_table.h" // mysql_alter_table, etc.
#include "sql_lex.h" // Sql_statement
#include "sql_admin.h" // Analyze/Check/.._table_statement
#include "sql_partition_admin.h" // Alter_table_*_partition
#ifdef WITH_PARTITION_STORAGE_ENGINE
#include "ha_partition.h" // ha_partition
#endif
#include "sql_base.h" // open_and_lock_tables
#ifndef WITH_PARTITION_STORAGE_ENGINE
bool Partition_statement_unsupported::execute(THD *)
{
DBUG_ENTER("Partition_statement_unsupported::execute");
/* error, partitioning support not compiled in... */
my_error(ER_FEATURE_DISABLED, MYF(0), "partitioning",
"--with-plugin-partition");
DBUG_RETURN(TRUE);
}
#else
bool Alter_table_analyze_partition_statement::execute(THD *thd)
{
bool res;
DBUG_ENTER("Alter_table_analyze_partition_statement::execute");
/*
Flag that it is an ALTER command which administrates partitions, used
by ha_partition
*/
m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
res= Analyze_table_statement::execute(thd);
DBUG_RETURN(res);
}
bool Alter_table_check_partition_statement::execute(THD *thd)
{
bool res;
DBUG_ENTER("Alter_table_check_partition_statement::execute");
/*
Flag that it is an ALTER command which administrates partitions, used
by ha_partition
*/
m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
res= Check_table_statement::execute(thd);
DBUG_RETURN(res);
}
bool Alter_table_optimize_partition_statement::execute(THD *thd)
{
bool res;
DBUG_ENTER("Alter_table_optimize_partition_statement::execute");
/*
Flag that it is an ALTER command which administrates partitions, used
by ha_partition
*/
m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
res= Optimize_table_statement::execute(thd);
DBUG_RETURN(res);
}
bool Alter_table_repair_partition_statement::execute(THD *thd)
{
bool res;
DBUG_ENTER("Alter_table_repair_partition_statement::execute");
/*
Flag that it is an ALTER command which administrates partitions, used
by ha_partition
*/
m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION;
res= Repair_table_statement::execute(thd);
DBUG_RETURN(res);
}
bool Alter_table_truncate_partition_statement::execute(THD *thd)
{
int error;
ha_partition *partition;
ulong timeout= thd->variables.lock_wait_timeout;
TABLE_LIST *first_table= thd->lex->select_lex.table_list.first;
bool binlog_stmt;
DBUG_ENTER("Alter_table_truncate_partition_statement::execute");
/*
Flag that it is an ALTER command which administrates partitions, used
by ha_partition.
*/
m_lex->alter_info.flags|= ALTER_ADMIN_PARTITION |
ALTER_TRUNCATE_PARTITION;
/* Fix the lock types (not the same as ordinary ALTER TABLE). */
first_table->lock_type= TL_WRITE;
first_table->mdl_request.set_type(MDL_EXCLUSIVE);
/*
Check table permissions and open it with a exclusive lock.
Ensure it is a partitioned table and finally, upcast the
handler and invoke the partition truncate method. Lastly,
write the statement to the binary log if necessary.
*/
if (check_one_table_access(thd, DROP_ACL, first_table))
DBUG_RETURN(TRUE);
if (open_and_lock_tables(thd, first_table, FALSE, 0))
DBUG_RETURN(TRUE);
/*
TODO: Add support for TRUNCATE PARTITION for NDB and other
engines supporting native partitioning.
*/
if (!first_table->table || first_table->view ||
first_table->table->s->db_type() != partition_hton)
{
my_error(ER_PARTITION_MGMT_ON_NONPARTITIONED, MYF(0));
DBUG_RETURN(TRUE);
}
/*
Under locked table modes this might still not be an exclusive
lock. Hence, upgrade the lock since the handler truncate method
mandates an exclusive metadata lock.
*/
MDL_ticket *ticket= first_table->table->mdl_ticket;
if (thd->mdl_context.upgrade_shared_lock_to_exclusive(ticket, timeout))
DBUG_RETURN(TRUE);
tdc_remove_table(thd, TDC_RT_REMOVE_NOT_OWN, first_table->db,
first_table->table_name, FALSE);
partition= (ha_partition *) first_table->table->file;
/* Invoke the handler method responsible for truncating the partition. */
if ((error= partition->truncate_partition(&thd->lex->alter_info,
&binlog_stmt)))
first_table->table->file->print_error(error, MYF(0));
/*
All effects of a truncate operation are committed even if the
operation fails. Thus, the query must be written to the binary
log. The exception is a unimplemented truncate method or failure
before any call to handler::truncate() is done.
Also, it is logged in statement format, regardless of the binlog format.
*/
if (error != HA_ERR_WRONG_COMMAND && binlog_stmt)
error|= write_bin_log(thd, !error, thd->query(), thd->query_length());
/*
A locked table ticket was upgraded to a exclusive lock. After the
the query has been written to the binary log, downgrade the lock
to a shared one.
*/
if (thd->locked_tables_mode)
ticket->downgrade_exclusive_lock(MDL_SHARED_NO_READ_WRITE);
if (! error)
my_ok(thd);
DBUG_RETURN(error);
}
#endif /* WITH_PARTITION_STORAGE_ENGINE */
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