diff options
Diffstat (limited to 'src/mongo/db/ops/modifier_compare.h')
-rw-r--r-- | src/mongo/db/ops/modifier_compare.h | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/src/mongo/db/ops/modifier_compare.h b/src/mongo/db/ops/modifier_compare.h deleted file mode 100644 index 44cfdf15c7e..00000000000 --- a/src/mongo/db/ops/modifier_compare.h +++ /dev/null @@ -1,113 +0,0 @@ -/** - * 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/>. - * - * 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 <string> - -#include "mongo/base/disallow_copying.h" -#include "mongo/bson/mutable/element.h" -#include "mongo/db/field_ref.h" -#include "mongo/db/jsobj.h" -#include "mongo/db/ops/modifier_interface.h" - -namespace mongo { - -class CollatorInterface; -class LogBuilder; - -class ModifierCompare : public ModifierInterface { - MONGO_DISALLOW_COPYING(ModifierCompare); - -public: - enum ModifierCompareMode { MAX, MIN }; - explicit ModifierCompare(ModifierCompareMode mode = MAX); - - virtual ~ModifierCompare(); - - // - // Modifier interface implementation - // - - /** - * A 'modExpr' is a BSONElement {<fieldname>: <value>} coming from a $set mod such as - * {$set: {<fieldname: <value>}}. init() extracts the field name and the value to be - * assigned to it from 'modExpr'. It returns OK if successful or a status describing - * the error. - */ - virtual Status init(const BSONElement& modExpr, const Options& opts, bool* positional = NULL); - - /** - * Looks up the field name in the sub-tree rooted at 'root', and binds, if necessary, - * the '$' field part using the 'matchedfield' number. prepare() returns OK and - * fills in 'execInfo' with information of whether this mod is a no-op on 'root' and - * whether it is an in-place candidate. Otherwise, returns a status describing the - * error. - */ - virtual Status prepare(mutablebson::Element root, StringData matchedField, ExecInfo* execInfo); - - /** - * Applies the prepared mod over the element 'root' specified in the prepare() - * call. Returns OK if successful or a status describing the error. - */ - virtual Status apply() const; - - /** - * Adds a log entry to logRoot corresponding to the operation applied here. Returns OK - * if successful or a status describing the error. - */ - virtual Status log(LogBuilder* logBuilder) const; - - virtual void setCollator(const CollatorInterface* collator) { - invariant(!_collator); - _collator = collator; - } - -private: - // Compare mode: min/max - const ModifierCompareMode _mode; - - // Access to each component of fieldName that's the target of this mod. - FieldRef _updatePath; - - // 0 or index for $-positional in _updatePath. - size_t _pathReplacementPosition; - - // Element of the mod expression. - BSONElement _val; - - // The instance of the field in the provided doc. This state is valid after a - // prepare() was issued and until a log() is issued. The document this mod is - // being prepared against must be live throughout all the calls. - struct PreparedState; - std::unique_ptr<PreparedState> _preparedState; - - const CollatorInterface* _collator = nullptr; -}; - -} // namespace mongo |