SERVER-19402 Change agg array sort semantics to match find.

1 files changed, 67 insertions, 0 deletions

diff --git a/src/mongo/db/pipeline/document_source_internal_inhibit_optimization.cpp b/src/mongo/db/pipeline/document_source_internal_inhibit_optimization.cpp
new file mode 100644
index 00000000000..9fc0ef985ab
--- /dev/null
+++ b/src/mongo/db/pipeline/document_source_internal_inhibit_optimization.cpp
@@ -0,0 +1,67 @@
+/**
+ * Copyright (C) 2017 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/pipeline/document_source_internal_inhibit_optimization.h"
+
+namespace mongo {
+
+REGISTER_DOCUMENT_SOURCE(_internalInhibitOptimization,
+                         LiteParsedDocumentSourceDefault::parse,
+                         DocumentSourceInternalInhibitOptimization::createFromBson);
+
+constexpr StringData DocumentSourceInternalInhibitOptimization::kStageName;
+
+boost::intrusive_ptr<DocumentSource> DocumentSourceInternalInhibitOptimization::createFromBson(
+    BSONElement elem, const boost::intrusive_ptr<ExpressionContext>& expCtx) {
+    uassert(ErrorCodes::TypeMismatch,
+            str::stream() << "$_internalInhibitOptimization must take a nested object but found: "
+                          << elem,
+            elem.type() == BSONType::Object);
+
+    auto specObj = elem.embeddedObject();
+    uassert(ErrorCodes::FailedToParse,
+            str::stream() << "$_internalInhibitOptimization must take an empty object but found: "
+                          << specObj,
+            specObj.isEmpty());
+
+    return new DocumentSourceInternalInhibitOptimization(expCtx);
+}
+
+DocumentSource::GetNextResult DocumentSourceInternalInhibitOptimization::getNext() {
+    pExpCtx->checkForInterrupt();
+    return pSource->getNext();
+}
+
+Value DocumentSourceInternalInhibitOptimization::serialize(
+    boost::optional<ExplainOptions::Verbosity> explain) const {
+    return Value(Document{{getSourceName(), Value{Document{}}}});
+}
+
+}  // namesace mongo