| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| //--------------------------------------------------------------------------- |
| // @filename: |
| // CGPOptimizer.h |
| // |
| // @doc: |
| // Entry point to GP optimizer |
| // |
| // @test: |
| // |
| // |
| //--------------------------------------------------------------------------- |
| #ifndef CGPOptimizer_H |
| #define CGPOptimizer_H |
| |
| #include "postgres.h" |
| #include "nodes/params.h" |
| #include "nodes/plannodes.h" |
| #include "nodes/parsenodes.h" |
| |
| class CGPOptimizer |
| { |
| private: |
| |
| // touch library initializers to enforce linker to include them |
| static |
| void TouchLibraryInitializers(); |
| |
| public: |
| |
| // optimize given query using GP optimizer |
| static |
| PlannedStmt *PplstmtOptimize |
| ( |
| Query *pquery, |
| bool *pfUnexpectedFailure // output : set to true if optimizer unexpectedly failed to produce plan |
| ); |
| |
| // serialize planned statement into DXL |
| static |
| char *SzDXLPlan(Query *pquery); |
| |
| // gpopt initialize and terminate |
| static |
| void InitGPOPT(); |
| |
| static |
| void TerminateGPOPT(); |
| }; |
| |
| #endif // CGPOptimizer_H |