/*
* 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.core.construction;
import java.util.Map;
import org.apache.beam.sdk.runners.PTransformOverrideFactory;
import org.apache.beam.sdk.transforms.PTransform;
import org.apache.beam.sdk.values.PValue;
import org.apache.beam.sdk.values.TupleTag;
/**
* A {@link PTransformOverrideFactory} which consumes from a {@link PValue} and produces a
* {@link PValue}. {@link #mapOutputs(Map, PValue)} is
* implemented.
*/
public abstract class SingleInputOutputOverrideFactory<
InputT extends PValue,
OutputT extends PValue,
TransformT extends PTransform<InputT, OutputT>>
implements PTransformOverrideFactory<InputT, OutputT, TransformT> {
@Override
public final Map<PValue, ReplacementOutput> mapOutputs(
Map<TupleTag<?>, PValue> outputs, OutputT newOutput) {
return ReplacementOutputs.singleton(outputs, newOutput);
}
}