/*
* 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.apex.translation;
import com.datatorrent.api.InputOperator;
import org.apache.beam.runners.apex.translation.operators.ApexReadUnboundedInputOperator;
import org.apache.beam.sdk.io.Read;
import org.apache.beam.sdk.io.UnboundedSource;
/**
* {@link Read.Unbounded} is translated to Apex {@link InputOperator}
* that wraps {@link UnboundedSource}.
*/
class ReadUnboundedTranslator<T> implements TransformTranslator<Read.Unbounded<T>> {
private static final long serialVersionUID = 1L;
@Override
public void translate(Read.Unbounded<T> transform, TranslationContext context) {
UnboundedSource<T, ?> unboundedSource = transform.getSource();
ApexReadUnboundedInputOperator<T, ?> operator = new ApexReadUnboundedInputOperator<>(
unboundedSource, context.getPipelineOptions());
context.addOperator(operator, operator.output);
}
}