org.apache.comet.expressions.CometEvalMode.scala Maven / Gradle / Ivy
The newest version!
/*
* 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.comet.expressions
/**
* We cannot reference Spark's EvalMode directly because the package is different between Spark
* versions, so we copy it here.
*
* Expression evaluation modes.
* - LEGACY: the default evaluation mode, which is compliant to Hive SQL.
* - ANSI: a evaluation mode which is compliant to ANSI SQL standard.
* - TRY: a evaluation mode for `try_*` functions. It is identical to ANSI evaluation mode
* except for returning null result on errors.
*/
object CometEvalMode extends Enumeration {
val LEGACY, ANSI, TRY = Value
def fromBoolean(ansiEnabled: Boolean): Value = if (ansiEnabled) {
ANSI
} else {
LEGACY
}
def fromString(str: String): CometEvalMode.Value = CometEvalMode.withName(str)
}