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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2009 Sun Microsystems, Inc.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/show.h>
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#include <drizzled/lock.h>
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#include <drizzled/session.h>
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#include <drizzled/statement/replace_select.h>
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#include <drizzled/select_insert.h>
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#include <drizzled/sql_lex.h>
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#include <drizzled/open_tables_state.h>
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bool statement::ReplaceSelect::execute()
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TableList *first_table= (TableList *) lex().select_lex.table_list.first;
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TableList *all_tables= lex().query_tables;
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assert(first_table == all_tables && first_table != 0);
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Select_Lex *select_lex= &lex().select_lex;
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if (insert_precheck(&session(), all_tables))
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/* Don't unlock tables until command is written to binary log */
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select_lex->options|= SELECT_NO_UNLOCK;
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lex().unit.set_limit(select_lex);
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if (session().wait_if_global_read_lock(false, true))
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if (! (res= session().openTablesLock(all_tables)))
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/* Skip first table, which is the table we are inserting in */
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TableList *second_table= first_table->next_local;
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select_lex->table_list.first= (unsigned char*) second_table;
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select_lex->context.table_list= select_lex->context.first_name_resolution_table= second_table;
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res= insert_select_prepare(&session());
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select_insert sel_result(first_table, first_table->table, &lex().field_list, &lex().update_list,&lex().value_list, lex().duplicates, lex().ignore);
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res= handle_select(&session(), &lex(), &sel_result, OPTION_SETUP_TABLES_DONE);
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Invalidate the table in the query cache if something changed
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after unlocking when changes become visible.
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TODO: this is a workaround. right way will be move invalidating in
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if (first_table->lock_type == TL_WRITE_CONCURRENT_INSERT && session().open_tables.lock)
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/* INSERT ... SELECT should invalidate only the very first table */
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TableList *save_table= first_table->next_local;
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first_table->next_local= 0;
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first_table->next_local= save_table;
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/* revert changes for SP */
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select_lex->table_list.first= (unsigned char*) first_table;
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Release the protection against the global read lock and wake
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everyone, who might want to set a global read lock.
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session().startWaitingGlobalReadLock();
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} /* namespace drizzled */