/*
* 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.beam.runners.spark.translation;
import org.apache.beam.sdk.coders.Coder;
import org.apache.beam.sdk.coders.StringUtf8Coder;
import org.apache.beam.sdk.transforms.PTransform;
import org.apache.beam.sdk.values.PCollection;
import org.apache.beam.sdk.values.WindowingStrategy;
/**
* Get RDD storage level for the input PCollection (mostly used for testing purpose).
*/
public final class StorageLevelPTransform extends PTransform<PCollection<?>, PCollection<String>> {
@Override
public PCollection<String> expand(PCollection<?> input) {
return PCollection.createPrimitiveOutputInternal(input.getPipeline(),
WindowingStrategy.globalDefault(),
PCollection.IsBounded.BOUNDED);
}
@Override
public Coder getDefaultOutputCoder() {
return StringUtf8Coder.of();
}
}