mirror of https://gitee.com/bigwinds/arangodb
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
/// DISCLAIMER
|
|
///
|
|
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
|
|
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
|
|
///
|
|
/// Licensed under the Apache License, Version 2.0 (the "License");
|
|
/// you may not use this file except in compliance with the License.
|
|
/// You may obtain a copy of the License at
|
|
///
|
|
/// http://www.apache.org/licenses/LICENSE-2.0
|
|
///
|
|
/// Unless required by applicable law or agreed to in writing, software
|
|
/// distributed under the License is distributed on an "AS IS" BASIS,
|
|
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
/// See the License for the specific language governing permissions and
|
|
/// limitations under the License.
|
|
///
|
|
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
|
|
///
|
|
/// @author Jan Steemann
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef ARANGOD_ROCKSDB_ROCKSDB_OPTIMIZER_RULES_H
|
|
#define ARANGOD_ROCKSDB_ROCKSDB_OPTIMIZER_RULES_H 1
|
|
|
|
#include "Basics/Common.h"
|
|
|
|
namespace arangodb {
|
|
namespace aql {
|
|
class ExecutionPlan;
|
|
class Optimizer;
|
|
struct OptimizerRule;
|
|
} // namespace aql
|
|
|
|
struct RocksDBOptimizerRules {
|
|
static void registerResources();
|
|
// simplify an EnumerationCollectionNode that fetches an entire document to a
|
|
// projection of this document
|
|
static void reduceExtractionToProjectionRule(aql::Optimizer* opt,
|
|
std::unique_ptr<aql::ExecutionPlan> plan,
|
|
aql::OptimizerRule const& rule);
|
|
// remove SORT RAND() LIMIT 1 if appropriate
|
|
static void removeSortRandRule(aql::Optimizer* opt,
|
|
std::unique_ptr<aql::ExecutionPlan> plan,
|
|
aql::OptimizerRule const& rule);
|
|
};
|
|
|
|
} // namespace arangodb
|
|
|
|
#endif
|