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/* Copyright (C) 2003 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include <common/common.hpp>
#include <common/CodeTree.hpp>
#include <common/StmtArea.hpp>
#include <codegen/Code_root.hpp>
#include "Executor.hpp"
void
Executor::execute(Ctx& ctx)
{
Exec_base::Ctl ctl(0);
Exec_root* execRoot = static_cast<Exec_root*>(m_stmtArea.m_execTree);
ctx_assert(execRoot != 0);
rebind(ctx);
if (! ctx.ok())
return;
execRoot->execute(ctx, ctl);
if (! ctx.ok())
return;
ctx_log2(("Executor: execute done"));
}
void
Executor::fetch(Ctx& ctx)
{
Exec_base::Ctl ctl(0);
Exec_root* execRoot = static_cast<Exec_root*>(m_stmtArea.m_execTree);
ctx_assert(execRoot != 0);
rebind(ctx);
if (! ctx.ok())
return;
execRoot->fetch(ctx, ctl);
if (! ctx.ok())
return;
ctx_log2(("Executor: fetch done"));
}
void
Executor::rebind(Ctx& ctx)
{
Exec_root* execRoot = static_cast<Exec_root*>(m_stmtArea.m_execTree);
ctx_assert(execRoot != 0);
DescArea& apd = m_stmtArea.descArea(Desc_usage_APD);
DescArea& ard = m_stmtArea.descArea(Desc_usage_ARD);
if (! apd.isBound() || ! ard.isBound()) {
ctx_log2(("Executor: rebind required"));
execRoot->bind(ctx);
if (! ctx.ok())
return;
apd.setBound(true);
ard.setBound(true);
}
}
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