140 lines
6.4 KiB
C++
140 lines
6.4 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_QUERY_EXPRS_CONDITIONAL_FUNCTIONS_H
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#define DORIS_BE_SRC_QUERY_EXPRS_CONDITIONAL_FUNCTIONS_H
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#include <stdint.h>
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#include "common/object_pool.h"
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#include "exprs/expr.h"
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#include "udf/udf.h"
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namespace doris {
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class TupleRow;
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class ConditionalFunctions {
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public:
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};
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/// The following conditional functions require separate Expr classes to take advantage of
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/// short circuiting
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class IfNullExpr : public Expr {
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public:
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virtual ~IfNullExpr();
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virtual Expr* clone(ObjectPool* pool) const override {
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return pool->add(new IfNullExpr(*this));
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}
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virtual BooleanVal get_boolean_val(ExprContext* context, TupleRow* row) override;
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virtual TinyIntVal get_tiny_int_val(ExprContext* context, TupleRow* row) override;
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virtual SmallIntVal get_small_int_val(ExprContext* context, TupleRow* row) override;
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virtual IntVal get_int_val(ExprContext* context, TupleRow* row) override;
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virtual BigIntVal get_big_int_val(ExprContext* context, TupleRow* row) override;
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virtual FloatVal get_float_val(ExprContext* context, TupleRow* row) override;
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virtual DoubleVal get_double_val(ExprContext* context, TupleRow* row) override;
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virtual StringVal get_string_val(ExprContext* context, TupleRow* row) override;
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virtual DateTimeVal get_datetime_val(ExprContext* context, TupleRow* row) override;
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virtual DecimalV2Val get_decimalv2_val(ExprContext* context, TupleRow* row) override;
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virtual LargeIntVal get_large_int_val(ExprContext* context, TupleRow* row) override;
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virtual std::string debug_string() const override { return Expr::debug_string("IfNullExpr"); }
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protected:
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friend class Expr;
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IfNullExpr(const TExprNode& node);
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};
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class NullIfExpr : public Expr {
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public:
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virtual ~NullIfExpr();
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virtual Expr* clone(ObjectPool* pool) const override {
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return pool->add(new NullIfExpr(*this));
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}
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virtual BooleanVal get_boolean_val(ExprContext* context, TupleRow* row) override;
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virtual TinyIntVal get_tiny_int_val(ExprContext* context, TupleRow* row) override;
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virtual SmallIntVal get_small_int_val(ExprContext* context, TupleRow* row) override;
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virtual IntVal get_int_val(ExprContext* context, TupleRow* row) override;
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virtual BigIntVal get_big_int_val(ExprContext* context, TupleRow* row) override;
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virtual FloatVal get_float_val(ExprContext* context, TupleRow* row) override;
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virtual DoubleVal get_double_val(ExprContext* context, TupleRow* row) override;
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virtual StringVal get_string_val(ExprContext* context, TupleRow* row) override;
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virtual DateTimeVal get_datetime_val(ExprContext* context, TupleRow* row) override;
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virtual DecimalV2Val get_decimalv2_val(ExprContext* context, TupleRow* row) override;
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virtual LargeIntVal get_large_int_val(ExprContext* context, TupleRow* row) override;
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virtual std::string debug_string() const override { return Expr::debug_string("NullIfExpr"); }
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protected:
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friend class Expr;
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NullIfExpr(const TExprNode& node);
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};
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class IfExpr : public Expr {
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public:
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virtual ~IfExpr();
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virtual Expr* clone(ObjectPool* pool) const override { return pool->add(new IfExpr(*this)); }
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virtual BooleanVal get_boolean_val(ExprContext* context, TupleRow* row) override;
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virtual TinyIntVal get_tiny_int_val(ExprContext* context, TupleRow* row) override;
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virtual SmallIntVal get_small_int_val(ExprContext* context, TupleRow* row) override;
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virtual IntVal get_int_val(ExprContext* context, TupleRow* row) override;
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virtual BigIntVal get_big_int_val(ExprContext* context, TupleRow* row) override;
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virtual FloatVal get_float_val(ExprContext* context, TupleRow* row) override;
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virtual DoubleVal get_double_val(ExprContext* context, TupleRow* row) override;
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virtual StringVal get_string_val(ExprContext* context, TupleRow* row) override;
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virtual DateTimeVal get_datetime_val(ExprContext* context, TupleRow* row) override;
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virtual DecimalV2Val get_decimalv2_val(ExprContext* context, TupleRow* row) override;
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virtual LargeIntVal get_large_int_val(ExprContext* context, TupleRow* row) override;
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virtual std::string debug_string() const override { return Expr::debug_string("IfExpr"); }
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protected:
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friend class Expr;
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IfExpr(const TExprNode& node);
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};
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// Returns the first non-nullptr value in the list, or nullptr if there are no non-nullptr values.
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class CoalesceExpr : public Expr {
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public:
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virtual ~CoalesceExpr();
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virtual Expr* clone(ObjectPool* pool) const override {
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return pool->add(new CoalesceExpr(*this));
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}
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virtual BooleanVal get_boolean_val(ExprContext* context, TupleRow* row) override;
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virtual TinyIntVal get_tiny_int_val(ExprContext* context, TupleRow* row) override;
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virtual SmallIntVal get_small_int_val(ExprContext* context, TupleRow* row) override;
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virtual IntVal get_int_val(ExprContext* context, TupleRow* row) override;
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virtual BigIntVal get_big_int_val(ExprContext* context, TupleRow* row) override;
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virtual FloatVal get_float_val(ExprContext* context, TupleRow* row) override;
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virtual DoubleVal get_double_val(ExprContext* context, TupleRow* row) override;
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virtual StringVal get_string_val(ExprContext* context, TupleRow* row) override;
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virtual DateTimeVal get_datetime_val(ExprContext* context, TupleRow* row) override;
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virtual DecimalV2Val get_decimalv2_val(ExprContext* context, TupleRow* row) override;
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virtual LargeIntVal get_large_int_val(ExprContext* context, TupleRow* row) override;
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virtual std::string debug_string() const override { return Expr::debug_string("CoalesceExpr"); }
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protected:
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friend class Expr;
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CoalesceExpr(const TExprNode& node);
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};
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} // namespace doris
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#endif
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