SERVER-16101 replace DeleteExecutor with ParsedDelete

1 files changed, 104 insertions, 0 deletions

diff --git a/src/mongo/db/ops/parsed_delete.cpp b/src/mongo/db/ops/parsed_delete.cpp
new file mode 100644
index 00000000000..da1b2c77a25
--- /dev/null
+++ b/src/mongo/db/ops/parsed_delete.cpp
@@ -0,0 +1,104 @@
+/**
+ *    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.
+ */
+
+#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kWrite
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/ops/parsed_delete.h"
+
+#include "mongo/db/catalog/collection.h"
+#include "mongo/db/catalog/database.h"
+#include "mongo/db/exec/delete.h"
+#include "mongo/db/ops/delete_request.h"
+#include "mongo/db/query/canonical_query.h"
+#include "mongo/db/query/get_executor.h"
+#include "mongo/db/query/query_planner_common.h"
+#include "mongo/db/repl/repl_coordinator_global.h"
+#include "mongo/util/assert_util.h"
+#include "mongo/util/log.h"
+#include "mongo/util/mongoutils/str.h"
+
+namespace mongo {
+
+    ParsedDelete::ParsedDelete(OperationContext* txn, const DeleteRequest* request) :
+        _txn(txn),
+        _request(request) { }
+
+    Status ParsedDelete::parseRequest() {
+        dassert(!_canonicalQuery.get());
+
+        if (CanonicalQuery::isSimpleIdQuery(_request->getQuery())) {
+            return Status::OK();
+        }
+
+        return parseQueryToCQ();
+    }
+
+    Status ParsedDelete::parseQueryToCQ() {
+        dassert(!_canonicalQuery.get());
+
+        CanonicalQuery* cqRaw;
+        const WhereCallbackReal whereCallback(_txn, _request->getNamespaceString().db());
+
+        Status status = CanonicalQuery::canonicalize(_request->getNamespaceString().ns(),
+                                                     _request->getQuery(),
+                                                     _request->isExplain(),
+                                                     &cqRaw,
+                                                     whereCallback);
+
+        if (status.isOK()) {
+            cqRaw->setIsForWrite(true);
+            _canonicalQuery.reset(cqRaw);
+        }
+
+        return status;
+    }
+
+    const DeleteRequest* ParsedDelete::getRequest() const {
+        return _request;
+    }
+
+    bool ParsedDelete::canYield() const {
+        return !_request->isGod() &&
+            PlanExecutor::YIELD_AUTO == _request->getYieldPolicy() && (
+            _canonicalQuery.get() ?
+            !QueryPlannerCommon::hasNode(_canonicalQuery->root(), MatchExpression::ATOMIC) :
+            !LiteParsedQuery::isQueryIsolated(_request->getQuery()));
+    }
+
+    bool ParsedDelete::hasParsedQuery() const {
+        return _canonicalQuery.get() != NULL;
+    }
+
+    CanonicalQuery* ParsedDelete::releaseParsedQuery() {
+        invariant(_canonicalQuery.get() != NULL);
+        return _canonicalQuery.release();
+    }
+
+}  // namespace mongo