mirror of
https://github.com/mongodb/mongo.git
synced 2024-11-30 00:56:44 +01:00
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
// matcher_covered.cpp
|
|
|
|
/* Matcher is our boolean expression evaluator for "where" clauses */
|
|
|
|
/**
|
|
* Copyright (C) 2008 10gen Inc.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License, version 3,
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* 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 Affero General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Affero General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "pch.h"
|
|
#include "matcher.h"
|
|
#include "../util/goodies.h"
|
|
#include "../util/unittest.h"
|
|
#include "diskloc.h"
|
|
#include "../scripting/engine.h"
|
|
#include "db.h"
|
|
#include "client.h"
|
|
|
|
#include "pdfile.h"
|
|
|
|
namespace mongo {
|
|
|
|
CoveredIndexMatcher::CoveredIndexMatcher( const BSONObj &jsobj, const BSONObj &indexKeyPattern, bool alwaysUseRecord) :
|
|
_docMatcher( new Matcher( jsobj ) ),
|
|
_keyMatcher( *_docMatcher, indexKeyPattern ) {
|
|
init( alwaysUseRecord );
|
|
}
|
|
|
|
CoveredIndexMatcher::CoveredIndexMatcher( const shared_ptr< Matcher > &docMatcher, const BSONObj &indexKeyPattern , bool alwaysUseRecord ) :
|
|
_docMatcher( docMatcher ),
|
|
_keyMatcher( *_docMatcher, indexKeyPattern ) {
|
|
init( alwaysUseRecord );
|
|
}
|
|
|
|
void CoveredIndexMatcher::init( bool alwaysUseRecord ) {
|
|
_needRecord =
|
|
alwaysUseRecord ||
|
|
! ( _docMatcher->keyMatch() &&
|
|
_keyMatcher.sameCriteriaCount( *_docMatcher ) );
|
|
|
|
_needRecordReject = _keyMatcher.hasType( BSONObj::opEXISTS );
|
|
}
|
|
|
|
bool CoveredIndexMatcher::matchesCurrent( Cursor * cursor , MatchDetails * details ) {
|
|
// bool keyUsable = ! cursor->isMultiKey() && check for $orish like conditions in matcher SERVER-1264
|
|
return matches( cursor->currKey() , cursor->currLoc() , details );
|
|
}
|
|
|
|
bool CoveredIndexMatcher::matches(const BSONObj &key, const DiskLoc &recLoc , MatchDetails * details , bool keyUsable ) {
|
|
if ( details )
|
|
details->reset();
|
|
|
|
if ( _needRecordReject == false && keyUsable ) {
|
|
|
|
if ( !_keyMatcher.matches(key, details ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! _needRecord ) {
|
|
return true;
|
|
}
|
|
|
|
}
|
|
|
|
if ( details )
|
|
details->loadedObject = true;
|
|
|
|
return _docMatcher->matches(recLoc.obj() , details );
|
|
}
|
|
|
|
|
|
}
|