/
UnevaluableAggs.scala
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/
UnevaluableAggs.scala
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/*
* 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.
*/
package org.apache.spark.sql.catalyst.expressions.aggregate
import org.apache.spark.sql.catalyst.analysis.{FunctionRegistry, TypeCheckResult}
import org.apache.spark.sql.catalyst.expressions._
import org.apache.spark.sql.catalyst.trees.TreePattern.{BOOL_AGG, TreePattern}
import org.apache.spark.sql.catalyst.trees.UnaryLike
import org.apache.spark.sql.types._
abstract class UnevaluableBooleanAggBase(arg: Expression)
extends UnevaluableAggregate with ImplicitCastInputTypes with UnaryLike[Expression] {
override def child: Expression = arg
override def dataType: DataType = BooleanType
override def inputTypes: Seq[AbstractDataType] = Seq(BooleanType)
final override val nodePatterns: Seq[TreePattern] = Seq(BOOL_AGG)
override def checkInputDataTypes(): TypeCheckResult = {
arg.dataType match {
case dt if dt != BooleanType =>
TypeCheckResult.TypeCheckFailure(s"Input to function '$prettyName' should have been " +
s"${BooleanType.simpleString}, but it's [${arg.dataType.catalogString}].")
case _ => TypeCheckResult.TypeCheckSuccess
}
}
}
@ExpressionDescription(
usage = "_FUNC_(expr) - Returns true if all values of `expr` are true.",
examples = """
Examples:
> SELECT _FUNC_(col) FROM VALUES (true), (true), (true) AS tab(col);
true
> SELECT _FUNC_(col) FROM VALUES (NULL), (true), (true) AS tab(col);
true
> SELECT _FUNC_(col) FROM VALUES (true), (false), (true) AS tab(col);
false
""",
group = "agg_funcs",
since = "3.0.0")
case class BoolAnd(arg: Expression) extends UnevaluableBooleanAggBase(arg) {
override def nodeName: String = getTagValue(FunctionRegistry.FUNC_ALIAS).getOrElse("bool_and")
override protected def withNewChildInternal(newChild: Expression): Expression =
copy(arg = newChild)
}
@ExpressionDescription(
usage = "_FUNC_(expr) - Returns true if at least one value of `expr` is true.",
examples = """
Examples:
> SELECT _FUNC_(col) FROM VALUES (true), (false), (false) AS tab(col);
true
> SELECT _FUNC_(col) FROM VALUES (NULL), (true), (false) AS tab(col);
true
> SELECT _FUNC_(col) FROM VALUES (false), (false), (NULL) AS tab(col);
false
""",
group = "agg_funcs",
since = "3.0.0")
case class BoolOr(arg: Expression) extends UnevaluableBooleanAggBase(arg) {
override def nodeName: String = getTagValue(FunctionRegistry.FUNC_ALIAS).getOrElse("bool_or")
override protected def withNewChildInternal(newChild: Expression): Expression =
copy(arg = newChild)
}