spark IntervalMathUtils 源码
spark IntervalMathUtils 代码
文件路径：/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/IntervalMathUtils.scala
/*
* 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.util
import org.apache.spark.sql.errors.QueryExecutionErrors
/**
* Helper functions for interval arithmetic operations with overflow.
*/
object IntervalMathUtils {
def addExact(a: Int, b: Int): Int = withOverflow(Math.addExact(a, b), "try_add")
def addExact(a: Long, b: Long): Long = withOverflow(Math.addExact(a, b), "try_add")
def subtractExact(a: Int, b: Int): Int = withOverflow(Math.subtractExact(a, b), "try_subtract")
def subtractExact(a: Long, b: Long): Long = withOverflow(Math.subtractExact(a, b), "try_subtract")
def negateExact(a: Int): Int = withOverflow(Math.negateExact(a))
def negateExact(a: Long): Long = withOverflow(Math.negateExact(a))
private def withOverflow[A](f: => A, hint: String = ""): A = {
try {
f
} catch {
case e: ArithmeticException =>
throw QueryExecutionErrors.intervalArithmeticOverflowError(e.getMessage, hint, null)
}
}
}
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