16a394da0e
Currently, there are some useless includes in the codebase. We can use a tool named include-what-you-use to optimize these includes. By using a strict include-what-you-use policy, we can get lots of benefits from it.
79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef DORIS_BE_SRC_TESTUTIL_DESC_TBL_BUILDER_H
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#define DORIS_BE_SRC_TESTUTIL_DESC_TBL_BUILDER_H
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#include <gen_cpp/Descriptors_types.h>
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#include <vector>
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#include "runtime/types.h"
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namespace doris {
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class ObjectPool;
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class TupleDescBuilder;
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class DescriptorTbl;
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// Aids in the construction of a DescriptorTbl by declaring tuples and slots
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// associated with those tuples.
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// TupleIds are monotonically increasing from 0 for each declare_tuple, and
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// SlotIds increase similarly, but are always greater than all TupleIds.
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// Unlike FE, slots are not reordered based on size, and padding is not added.
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//
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// Example usage:
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// DescriptorTblBuilder builder;
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// builder.declare_tuple() << TYPE_TINYINT << TYPE_TIMESTAMP; // gets TupleId 0
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// builder.declare_tuple() << TYPE_FLOAT; // gets TupleId 1
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// DescriptorTbl desc_tbl = builder.build();
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class DescriptorTblBuilder {
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public:
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DescriptorTblBuilder(ObjectPool* object_pool);
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// a null dtor to pass codestyle check
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~DescriptorTblBuilder() {}
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TupleDescBuilder& declare_tuple();
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DescriptorTbl* build();
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private:
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// Owned by caller.
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ObjectPool* _obj_pool;
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std::vector<TupleDescBuilder*> _tuples_descs;
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TTupleDescriptor build_tuple(const std::vector<TypeDescriptor>& slot_types,
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TDescriptorTable* thrift_desc_tbl, int* tuple_id, int* slot_id);
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};
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class TupleDescBuilder {
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public:
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TupleDescBuilder& operator<<(const TypeDescriptor& slot_type) {
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_slot_types.push_back(slot_type);
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return *this;
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}
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std::vector<TypeDescriptor> slot_types() const { return _slot_types; }
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private:
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std::vector<TypeDescriptor> _slot_types;
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};
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} // end namespace doris
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#endif // DORIS_BE_SRC_TESTUTIL_DESC_TBL_BUILDER_H
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