SERVER-11531, SERVER-10489, SERVER-6835, SERVER-4830: Refactor update system to support immutable fields, consolodate storage validation, and misc issues.

1 files changed, 64 insertions, 0 deletions

diff --git a/src/mongo/db/ops/update_lifecycle.h b/src/mongo/db/ops/update_lifecycle.h
new file mode 100644
index 00000000000..4fd226999d3
--- /dev/null
+++ b/src/mongo/db/ops/update_lifecycle.h
@@ -0,0 +1,64 @@
+/**
+ *    Copyright (C) 2013 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.
+ */
+
+#pragma once
+
+#include "mongo/db/field_ref.h"
+#include "mongo/db/structure/collection.h"
+#include "mongo/s/chunk_version.h"
+
+namespace mongo {
+
+    class UpdateLifecycle {
+    public:
+
+        virtual ~UpdateLifecycle() {}
+
+        /**
+         * Can the update continue?
+         *
+         * The (only) implementation will check the following:
+         *  1.) Collection still exists
+         *  2.) Shard version has not changed (indicating that the query/update is not valid
+         */
+        virtual const bool canContinue() const = 0;
+
+        /**
+         * Set the out parameter if there is a collection and it has indexes
+         */
+        virtual const void getIndexKeys(IndexPathSet* returnedIndexPathSet) const = 0;
+
+        /**
+         * Returns the shard keys as immutable fields
+         * Immutable fields in this case mean that they are required to exist, cannot change values
+         * and must not be multi-valued (in an array, or an array)
+         */
+        virtual const std::vector<FieldRef*>* getImmutableFields() const = 0;
+    };
+
+} // namespace mongo