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/**
* Copyright (C) 2013 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 "mongo/db/query/canonical_query.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/matcher/expression_parser.h"
namespace mongo {
// static
Status CanonicalQuery::canonicalize(const QueryMessage& qm, CanonicalQuery** out) {
LiteParsedQuery* lpq;
Status parseStatus = LiteParsedQuery::make(qm, &lpq);
if (!parseStatus.isOK()) { return parseStatus; }
auto_ptr<CanonicalQuery> cq(new CanonicalQuery());
Status initStatus = cq->init(lpq);
if (!initStatus.isOK()) { return initStatus; }
*out = cq.release();
return Status::OK();
}
// static
Status CanonicalQuery::canonicalize(const string& ns, const BSONObj& query,
CanonicalQuery** out) {
LiteParsedQuery* lpq;
// Pass empty sort and projection.
BSONObj emptyObj;
Status parseStatus = LiteParsedQuery::make(ns, 0, 0, 0, query, emptyObj, emptyObj, &lpq);
if (!parseStatus.isOK()) { return parseStatus; }
auto_ptr<CanonicalQuery> cq(new CanonicalQuery());
Status initStatus = cq->init(lpq);
if (!initStatus.isOK()) { return initStatus; }
*out = cq.release();
return Status::OK();
}
Status CanonicalQuery::init(LiteParsedQuery* lpq) {
_pq.reset(lpq);
// Build a parse tree from the BSONObj in the parsed query.
StatusWithMatchExpression swme = MatchExpressionParser::parse(_pq->getFilter());
if (!swme.isOK()) { return swme.getStatus(); }
_root.reset(swme.getValue());
return Status::OK();
}
string CanonicalQuery::toString() const {
return "Tree: " + _root->toString();
}
} // namespace mongo
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