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