| // 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. |
| |
| #ifndef IMPALA_TESTUTIL_ROW_DESC_BUILDER_H_ |
| #define IMPALA_TESTUTIL_ROW_DESC_BUILDER_H_ |
| |
| #include <vector> |
| |
| #include "runtime/runtime-state.h" |
| #include "runtime/types.h" |
| #include "gen-cpp/Descriptors_types.h" |
| |
| namespace impala { |
| |
| class Frontend; |
| class ObjectPool; |
| class TupleDescBuilder; |
| class DescriptorTbl; |
| |
| /// Aids in the construction of a DescriptorTbl by declaring tuples and slots |
| /// associated with those tuples. |
| /// The descriptor table is constructed by calling into the FE via JNI, such that |
| /// the tuple mem layouts mimic real queries. All id assignments happen in the FE. |
| /// |
| /// Example usage: |
| /// DescriptorTblBuilder builder; |
| /// builder.DeclareTuple() << TYPE_TINYINT << TYPE_TIMESTAMP; |
| /// builder.DeclareTuple() << TYPE_FLOAT; |
| /// DescriptorTbl desc_tbl = builder.Build(); |
| class DescriptorTblBuilder { |
| public: |
| DescriptorTblBuilder(Frontend* fe, ObjectPool* object_pool); |
| |
| TupleDescBuilder& DeclareTuple(); |
| |
| // Allows to set a TableDescriptor on TDescriptorTable. |
| // Only one can be set. |
| void SetTableDescriptor(const TTableDescriptor& table_desc); |
| |
| DescriptorTbl* Build(); |
| |
| private: |
| /// Both owned by caller. |
| Frontend* fe_; |
| ObjectPool* obj_pool_; |
| |
| std::vector<TupleDescBuilder*> tuples_descs_; |
| TDescriptorTable thrift_desc_tbl_; |
| }; |
| |
| class TupleDescBuilder { |
| public: |
| TupleDescBuilder& operator<< (const ColumnType& slot_type) { |
| slot_types_.push_back(slot_type); |
| return *this; |
| } |
| |
| std::vector<ColumnType> slot_types() const { return slot_types_; } |
| |
| private: |
| std::vector<ColumnType> slot_types_; |
| }; |
| |
| } |
| |
| #endif |