com.johnsnowlabs.nlp.HasRecursiveTransform.scala Maven / Gradle / Ivy
/*
* Copyright 2017-2022 John Snow Labs
*
* 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 com.johnsnowlabs.nlp
import org.apache.spark.ml.{Model, PipelineModel}
import org.apache.spark.sql.expressions.UserDefinedFunction
import org.apache.spark.sql.functions.udf
import org.apache.spark.sql.{DataFrame, Dataset}
trait HasRecursiveTransform[M <: Model[M]] {
this: AnnotatorModel[M] =>
def annotate(annotations: Seq[Annotation], recursivePipeline: PipelineModel): Seq[Annotation]
def dfRecAnnotate(recursivePipeline: PipelineModel): UserDefinedFunction = udf {
annotationProperties: Seq[AnnotationContent] =>
annotate(annotationProperties.flatMap(_.map(Annotation(_))), recursivePipeline)
}
def recursiveTransform(dataset: Dataset[_], recursivePipeline: PipelineModel): DataFrame = {
_transform(dataset, Some(recursivePipeline))
}
}