org.pmml4s.transformations.Constant.scala Maven / Gradle / Ivy
/*
* Copyright (c) 2017-2019 AutoDeploy AI
*
* Licensed 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.pmml4s.transformations
import org.pmml4s.common.DataType
import org.pmml4s.data.{DataVal, Series}
import org.pmml4s.metadata.Field
/**
* Constant values can be used in expressions which have multiple arguments. . The actual value of a constant is given
* by the content of the element. For example, 1.05 represents the number 1.05. The dataType of
* Constant can be optionally specified.
*/
class Constant(
val value: DataVal,
val dataType: Option[DataType] = None,
val missing: Boolean = false) extends LeafExpression {
override def eval(series: Series): DataVal = if (missing) DataVal.NULL else value
override def getDataField: Option[Field] = None
}