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/**
* Copyright (C) 2014 MongoDB 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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/ops/update_executor.h"
#include "mongo/db/ops/update.h"
#include "mongo/db/ops/update_request.h"
#include "mongo/db/query/canonical_query.h"
#include "mongo/util/assert_util.h"
namespace mongo {
UpdateExecutor::UpdateExecutor(const UpdateRequest* request, OpDebug* opDebug) :
_request(request),
_opDebug(opDebug),
_driver(UpdateDriver::Options()),
_canonicalQuery(),
_isQueryParsed(false),
_isUpdateParsed(false) {
}
UpdateExecutor::~UpdateExecutor() {}
Status UpdateExecutor::prepare() {
// We parse the update portion before the query portion because the dispostion of the update
// may determine whether or not we need to produce a CanonicalQuery at all. For example, if
// the update involves the positional-dollar operator, we must have a CanonicalQuery even if
// it isn't required for query execution.
Status status = parseUpdate();
if (!status.isOK())
return status;
status = parseQuery();
if (!status.isOK())
return status;
return Status::OK();
}
UpdateResult UpdateExecutor::execute(OperationContext* txn, Database* db) {
uassertStatusOK(prepare());
return update(txn,
db,
*_request,
_opDebug,
&_driver,
_canonicalQuery.release());
}
Status UpdateExecutor::parseQuery() {
if (_isQueryParsed)
return Status::OK();
dassert(!_canonicalQuery.get());
dassert(_isUpdateParsed);
if (!_driver.needMatchDetails() && CanonicalQuery::isSimpleIdQuery(_request->getQuery())) {
_isQueryParsed = true;
return Status::OK();
}
CanonicalQuery* cqRaw;
const WhereCallbackReal whereCallback(_request->getNamespaceString().db());
Status status = CanonicalQuery::canonicalize(_request->getNamespaceString().ns(),
_request->getQuery(),
&cqRaw,
whereCallback);
if (status.isOK()) {
_canonicalQuery.reset(cqRaw);
_isQueryParsed = true;
}
return status;
}
Status UpdateExecutor::parseUpdate() {
if (_isUpdateParsed)
return Status::OK();
const NamespaceString& ns(_request->getNamespaceString());
// Should the modifiers validate their embedded docs via okForStorage
// Only user updates should be checked. Any system or replication stuff should pass through.
// Config db docs shouldn't get checked for valid field names since the shard key can have
// a dot (".") in it.
const bool shouldValidate = !(_request->isFromReplication() ||
ns.isConfigDB() ||
_request->isFromMigration());
_driver.setLogOp(true);
_driver.setModOptions(ModifierInterface::Options(_request->isFromReplication(),
shouldValidate));
Status status = _driver.parse(_request->getUpdates(), _request->isMulti());
if (status.isOK())
_isUpdateParsed = true;
return status;
}
} // namespace mongo
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