/*
* 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.kafka.streams.kstream.internals;
import org.apache.kafka.streams.kstream.ValueMapper;
import org.apache.kafka.streams.processor.AbstractProcessor;
import org.apache.kafka.streams.processor.Processor;
import org.apache.kafka.streams.processor.ProcessorSupplier;
class KStreamFlatMapValues<K, V, V1> implements ProcessorSupplier<K, V> {
private final ValueMapper<? super V, ? extends Iterable<? extends V1>> mapper;
KStreamFlatMapValues(ValueMapper<? super V, ? extends Iterable<? extends V1>> mapper) {
this.mapper = mapper;
}
@Override
public Processor<K, V> get() {
return new KStreamFlatMapValuesProcessor();
}
private class KStreamFlatMapValuesProcessor extends AbstractProcessor<K, V> {
@Override
public void process(K key, V value) {
Iterable<? extends V1> newValues = mapper.apply(value);
for (V1 v : newValues) {
context().forward(key, v);
}
}
}
}