/*
* 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.flink.api.java.operators.translation;
import org.apache.flink.annotation.Internal;
import org.apache.flink.api.common.functions.FlatJoinFunction;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.util.Collector;
@Internal
public final class TupleLeftUnwrappingJoiner<I1, I2, OUT, K>
extends WrappingFunction<FlatJoinFunction<I1, I2, OUT>>
implements FlatJoinFunction<Tuple2<K, I1>, I2, OUT> {
private static final long serialVersionUID = 1L;
public TupleLeftUnwrappingJoiner(FlatJoinFunction<I1, I2, OUT> wrapped) {
super(wrapped);
}
@SuppressWarnings("unchecked")
@Override
public void join(Tuple2<K, I1> value1, I2 value2, Collector<OUT> collector) throws Exception {
wrappedFunction.join(value1 == null ? null : (I1) value1.getField(1), value2, collector);
}
}