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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/StmtArea.hpp>
#include <dictionary/DictTable.hpp>
#include <dictionary/DictColumn.hpp>
#include "Code_query_range.hpp"
#include "Code_column.hpp"
#include "Code_expr.hpp"
#include "Code_root.hpp"
// Plan_query_range
Plan_query_range::~Plan_query_range()
{
}
Plan_base*
Plan_query_range::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_range::codegen(Ctx& ctx, Ctl& ctl)
{
// set up
ctx_assert(m_table != 0 && m_index != 0);
const BaseString& tableName = m_table->getName();
ctx_assert(m_index->m_dictIndex != 0);
const DictIndex& dictIndex = *m_index->m_dictIndex;
const BaseString& indexName = dictIndex.getName();
const unsigned keyCount = m_index->m_keyCountUsed;
const ColumnVector& columns = m_table->exprColumns();
ctx_assert(columns.size() > 0);
const unsigned attrCount = columns.size() - 1;
// create the code
Exec_query_range::Code& code = *new Exec_query_range::Code(keyCount, attrCount);
code.m_tableName = strcpy(new char[tableName.length() + 1], tableName.c_str());
code.m_indexName = strcpy(new char[indexName.length() + 1], indexName.c_str());
code.m_exclusive = m_exclusive;
// key attributes
code.m_keyId = new NdbAttrId[1 + keyCount];
code.m_keyId[0] = (NdbAttrId)-1;
for (unsigned k = 1; k <= keyCount; k++) {
const DictColumn* keyColumn = dictIndex.getColumn(k);
const SqlType& sqlType = keyColumn->sqlType();
SqlSpec sqlSpec(sqlType, SqlSpec::Physical);
code.m_keySpecs.setEntry(k, sqlSpec);
code.m_keyId[k] = k - 1; // index column order
}
// matching expressions
ctx_assert(m_index->m_keyFound);
const ExprVector& keyEq = m_index->m_keyEq;
// check size matches
ctx_assert(keyEq.size() == 1 + keyCount);
code.m_keyMatch = new Exec_expr* [1 + keyCount];
code.m_keyMatch[0] = 0;
for (unsigned k = 1; k <= keyCount; k++) {
Plan_expr* expr = keyEq[k];
Exec_expr* execExpr = static_cast<Exec_expr*>(expr->codegen(ctx, ctl));
if (! ctx.ok())
return 0;
ctx_assert(execExpr != 0);
code.m_keyMatch[k] = execExpr;
}
// 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_range* exec = new Exec_query_range(ctl.m_execRoot);
ctl.m_execRoot->saveNode(exec);
exec->setCode(code);
// interpreter
ctl.m_execQuery = exec;
Exec_pred* execInterp = 0;
ctl.m_topTable = m_table;
if (m_interp != 0) {
execInterp = static_cast<Exec_pred*>(m_interp->codegen(ctx, ctl));
if (! ctx.ok())
return 0;
ctx_assert(execInterp != 0);
}
ctl.m_topTable = 0;
if (m_interp != 0)
exec->setInterp(execInterp);
return exec;
}
void
Plan_query_range::print(Ctx& ctx)
{
ctx.print(" [query_range");
Plan_base* a[] = { m_table };
printList(ctx, a, 1);
ctx.print("]");
}
// Exec_query_range
Exec_query_range::Code::~Code()
{
delete[] m_tableName;
delete[] m_keyId;
delete[] m_keyMatch;
delete[] m_attrId;
}
Exec_query_range::Data::~Data()
{
delete[] m_recAttr;
}
Exec_query_range::~Exec_query_range()
{
}
void
Exec_query_range::alloc(Ctx& ctx, Ctl& ctl)
{
const Code& code = getCode();
// create data
Data& data = *new Data(this, code.sqlSpecs());
setData(data);
// allocate matching expressions
for (unsigned k = 1; k <= code.m_keyCount; k++) {
Exec_expr* expr = code.m_keyMatch[k];
ctx_assert(expr != 0);
expr->alloc(ctx, ctl);
if (! ctx.ok())
return;
}
// needed for isNULL
data.m_recAttr = new NdbRecAttr* [1 + code.m_attrCount];
for (unsigned i = 0; i <= code.m_attrCount; i++) {
data.m_recAttr[i] = 0;
}
// parallel
data.m_parallel = code.m_exclusive ? 1 : 240; // best supported
// interpreter
if (m_interp != 0) {
//m_interp->alloc(ctx, ctl); XXX
if (! ctx.ok())
return;
}
}
void
Exec_query_range::close(Ctx& ctx)
{
Data& data = getData();
if (data.m_con != 0) {
Ndb* const ndb = ndbObject();
ndb->closeTransaction(data.m_con);
data.m_con = 0;
data.m_op = 0;
data.m_done = true;
ctx_log2(("lookup closed at statement close"));
}
// if (m_interp != 0)
// m_interp->close(ctx);
}
void
Exec_query_range::print(Ctx& ctx)
{
ctx.print(" [query_range");
if (m_code != 0) {
const Code& code = getCode();
ctx.print(" keyId=");
for (unsigned i = 1; i <= code.m_keyCount; i++) {
if (i > 1)
ctx.print(",");
ctx.print("%u", (unsigned)code.m_keyId[i]);
}
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(" table=%s", code.m_tableName);
}
ctx.print("]");
}
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