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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 <NdbApi.hpp>
#include <common/StmtArea.hpp>
#include <dictionary/DictTable.hpp>
#include <dictionary/DictColumn.hpp>
#include "Code_query_sys.hpp"
#include "Code_column.hpp"
#include "Code_root.hpp"
// Plan_query_sys
Plan_query_sys::~Plan_query_sys()
{
}
Plan_base*
Plan_query_sys::analyze(Ctx& ctx, Ctl& ctl)
{
ctx_assert(m_table != 0);
m_table->analyze(ctx, ctl);
if (! ctx.ok())
return 0;
return this;
}
Exec_base*
Plan_query_sys::codegen(Ctx& ctx, Ctl& ctl)
{
// set up
ctx_assert(m_table != 0);
const DictTable& dictTable = m_table->dictTable();
const ColumnVector& columns = m_table->exprColumns();
ctx_assert(columns.size() > 0);
const unsigned attrCount = columns.size() - 1;
// create the code
Exec_query_sys::Code& code = *new Exec_query_sys::Code(attrCount);
code.m_sysId = dictTable.sysId();
// queried attributes
code.m_attrId = new NdbAttrId[1 + attrCount];
code.m_attrId[0] = (NdbAttrId)-1;
for (unsigned i = 1; i <= attrCount; i++) {
Plan_column* column = columns[i];
ctx_assert(column != 0);
const DictColumn& dictColumn = column->dictColumn();
const SqlType& sqlType = dictColumn.sqlType();
SqlSpec sqlSpec(sqlType, SqlSpec::Physical);
code.m_sqlSpecs.setEntry(i, sqlSpec);
code.m_attrId[i] = dictColumn.getAttrId();
}
// create the exec
Exec_query_sys* exec = new Exec_query_sys(ctl.m_execRoot);
ctl.m_execRoot->saveNode(exec);
exec->setCode(code);
return exec;
}
void
Plan_query_sys::print(Ctx& ctx)
{
ctx.print(" [query_sys");
Plan_base* a[] = { m_table };
printList(ctx, a, 1);
ctx.print("]");
}
// Exec_query_sys
Exec_query_sys::Code::~Code()
{
delete[] m_attrId;
}
Exec_query_sys::Data::~Data()
{
}
Exec_query_sys::~Exec_query_sys()
{
}
void
Exec_query_sys::alloc(Ctx& ctx, Ctl& ctl)
{
const Code& code = getCode();
// create data
Data& data = *new Data(this, code.sqlSpecs());
setData(data);
}
void
Exec_query_sys::close(Ctx& ctx)
{
Data& data = getData();
data.m_rowPos = 0;
data.m_tablePos = 0;
data.m_attrPos = 0;
data.m_keyPos = 0;
}
void
Exec_query_sys::print(Ctx& ctx)
{
ctx.print(" [query_sys");
if (m_code != 0) {
const Code& code = getCode();
ctx.print(" attrId=");
for (unsigned i = 1; i <= code.m_attrCount; i++) {
if (i > 1)
ctx.print(",");
ctx.print("%u", (unsigned)code.m_attrId[i]);
}
ctx.print(" sysId=%u", (unsigned)code.m_sysId);
}
ctx.print("]");
}
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