52 lines
2.0 KiB
C++
52 lines
2.0 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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#pragma once
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#include "vec/exprs/vexpr.h"
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#include "vec/functions/function_case.h"
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namespace doris::vectorized {
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class VCaseExpr final : public VExpr {
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public:
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VCaseExpr(const TExprNode& node);
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~VCaseExpr() = default;
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virtual Status execute(VExprContext* context, vectorized::Block* block,
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int* result_column_id) override;
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virtual Status prepare(RuntimeState* state, const RowDescriptor& desc,
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VExprContext* context) override;
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virtual Status open(RuntimeState* state, VExprContext* context,
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FunctionContext::FunctionStateScope scope) override;
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virtual void close(RuntimeState* state, VExprContext* context,
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FunctionContext::FunctionStateScope scope) override;
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virtual VExpr* clone(ObjectPool* pool) const override {
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return pool->add(new VCaseExpr(*this));
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}
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virtual const std::string& expr_name() const override;
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virtual std::string debug_string() const override;
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private:
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bool _has_case_expr;
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bool _has_else_expr;
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FunctionBasePtr _function;
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std::string _function_name = "case";
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const std::string _expr_name = "vcase expr";
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};
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} // namespace doris::vectorized
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