| // 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. |
| |
| #include "exprs/conditional-functions.h" |
| |
| #include "exprs/anyval-util.h" |
| #include "exprs/scalar-expr-evaluator.h" |
| #include "exprs/scalar-expr.inline.h" |
| #include "udf/udf.h" |
| |
| using namespace impala; |
| using namespace impala_udf; |
| |
| #define IS_NULL_COMPUTE_FUNCTION(type) \ |
| type IsNullExpr::Get##type##Interpreted( \ |
| ScalarExprEvaluator* eval, const TupleRow* row) const { \ |
| DCHECK_EQ(children_.size(), 2); \ |
| type val = GetChild(0)->Get##type(eval, row); \ |
| if (!val.is_null) return val; /* short-circuit */ \ |
| return GetChild(1)->Get##type(eval, row); \ |
| } |
| |
| IS_NULL_COMPUTE_FUNCTION(BooleanVal); |
| IS_NULL_COMPUTE_FUNCTION(TinyIntVal); |
| IS_NULL_COMPUTE_FUNCTION(SmallIntVal); |
| IS_NULL_COMPUTE_FUNCTION(IntVal); |
| IS_NULL_COMPUTE_FUNCTION(BigIntVal); |
| IS_NULL_COMPUTE_FUNCTION(FloatVal); |
| IS_NULL_COMPUTE_FUNCTION(DoubleVal); |
| IS_NULL_COMPUTE_FUNCTION(StringVal); |
| IS_NULL_COMPUTE_FUNCTION(TimestampVal); |
| IS_NULL_COMPUTE_FUNCTION(DecimalVal); |
| IS_NULL_COMPUTE_FUNCTION(DateVal); |
| |
| #define NULL_IF_ZERO_COMPUTE_FUNCTION(type) \ |
| type ConditionalFunctions::NullIfZero(FunctionContext* ctx, const type& val) { \ |
| if (val.is_null || val.val == 0) return type::null(); \ |
| return val; \ |
| } |
| |
| DecimalVal ConditionalFunctions::NullIfZero(FunctionContext* ctx, const DecimalVal& val) { |
| if (val.is_null) return DecimalVal::null(); |
| int type_byte_size = ctx->impl()->GetConstFnAttr(FunctionContextImpl::RETURN_TYPE_SIZE); |
| switch (type_byte_size) { |
| case 4: |
| if (val.val4 == 0) return DecimalVal::null(); |
| break; |
| case 8: |
| if (val.val8 == 0) return DecimalVal::null(); |
| break; |
| case 16: |
| if (val.val16 == 0) return DecimalVal::null(); |
| break; |
| default: |
| DCHECK(false); |
| } |
| return val; |
| } |
| |
| NULL_IF_ZERO_COMPUTE_FUNCTION(TinyIntVal); |
| NULL_IF_ZERO_COMPUTE_FUNCTION(SmallIntVal); |
| NULL_IF_ZERO_COMPUTE_FUNCTION(IntVal); |
| NULL_IF_ZERO_COMPUTE_FUNCTION(BigIntVal); |
| NULL_IF_ZERO_COMPUTE_FUNCTION(FloatVal); |
| NULL_IF_ZERO_COMPUTE_FUNCTION(DoubleVal); |
| |
| #define ZERO_IF_NULL_COMPUTE_FUNCTION(type) \ |
| type ConditionalFunctions::ZeroIfNull(FunctionContext* ctx, const type& val) { \ |
| if (val.is_null) return type(0); \ |
| return val; \ |
| } |
| |
| ZERO_IF_NULL_COMPUTE_FUNCTION(TinyIntVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(SmallIntVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(IntVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(BigIntVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(FloatVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(DoubleVal); |
| ZERO_IF_NULL_COMPUTE_FUNCTION(DecimalVal); |
| |
| #define IF_COMPUTE_FUNCTION(type) \ |
| type IfExpr::Get##type##Interpreted( \ |
| ScalarExprEvaluator* eval, const TupleRow* row) const { \ |
| DCHECK_EQ(children_.size(), 3); \ |
| BooleanVal cond = GetChild(0)->GetBooleanVal(eval, row); \ |
| if (cond.is_null || !cond.val) { \ |
| return GetChild(2)->Get##type(eval, row); \ |
| } \ |
| return GetChild(1)->Get##type(eval, row); \ |
| } |
| |
| IF_COMPUTE_FUNCTION(BooleanVal); |
| IF_COMPUTE_FUNCTION(TinyIntVal); |
| IF_COMPUTE_FUNCTION(SmallIntVal); |
| IF_COMPUTE_FUNCTION(IntVal); |
| IF_COMPUTE_FUNCTION(BigIntVal); |
| IF_COMPUTE_FUNCTION(FloatVal); |
| IF_COMPUTE_FUNCTION(DoubleVal); |
| IF_COMPUTE_FUNCTION(StringVal); |
| IF_COMPUTE_FUNCTION(TimestampVal); |
| IF_COMPUTE_FUNCTION(DecimalVal); |
| IF_COMPUTE_FUNCTION(DateVal); |
| |
| #define COALESCE_COMPUTE_FUNCTION(type) \ |
| type CoalesceExpr::Get##type##Interpreted( \ |
| ScalarExprEvaluator* eval, const TupleRow* row) const { \ |
| DCHECK_GE(children_.size(), 1); \ |
| for (int i = 0; i < children_.size(); ++i) { \ |
| type val = GetChild(i)->Get##type(eval, row); \ |
| if (!val.is_null) return val; \ |
| } \ |
| return type::null(); \ |
| } |
| |
| COALESCE_COMPUTE_FUNCTION(BooleanVal); |
| COALESCE_COMPUTE_FUNCTION(TinyIntVal); |
| COALESCE_COMPUTE_FUNCTION(SmallIntVal); |
| COALESCE_COMPUTE_FUNCTION(IntVal); |
| COALESCE_COMPUTE_FUNCTION(BigIntVal); |
| COALESCE_COMPUTE_FUNCTION(FloatVal); |
| COALESCE_COMPUTE_FUNCTION(DoubleVal); |
| COALESCE_COMPUTE_FUNCTION(StringVal); |
| COALESCE_COMPUTE_FUNCTION(TimestampVal); |
| COALESCE_COMPUTE_FUNCTION(DecimalVal); |
| COALESCE_COMPUTE_FUNCTION(DateVal); |
| |
| BooleanVal ConditionalFunctions::IsFalse(FunctionContext* ctx, const BooleanVal& val) { |
| if (val.is_null) return BooleanVal(false); |
| return BooleanVal(!val.val); |
| } |
| |
| BooleanVal ConditionalFunctions::IsNotFalse(FunctionContext* ctx, const BooleanVal& val) { |
| if (val.is_null) return BooleanVal(true); |
| return BooleanVal(val.val); |
| } |
| |
| BooleanVal ConditionalFunctions::IsTrue(FunctionContext* ctx, const BooleanVal& val) { |
| if (val.is_null) return BooleanVal(false); |
| return BooleanVal(val.val); |
| } |
| |
| BooleanVal ConditionalFunctions::IsNotTrue(FunctionContext* ctx, const BooleanVal& val) { |
| if (val.is_null) return BooleanVal(true); |
| return BooleanVal(!val.val); |
| } |