kafka KStreamGlobalKTableJoin 源码
kafka KStreamGlobalKTableJoin 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/kstream/internals/KStreamGlobalKTableJoin.java
/*
* 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.KeyValueMapper;
import org.apache.kafka.streams.kstream.ValueJoinerWithKey;
import org.apache.kafka.streams.processor.api.Processor;
import org.apache.kafka.streams.processor.api.ProcessorSupplier;
class KStreamGlobalKTableJoin<K1, V1, K2, V2, VOut> implements ProcessorSupplier<K1, V1, K1, VOut> {
private final KTableValueGetterSupplier<K2, V2> valueGetterSupplier;
private final ValueJoinerWithKey<? super K1, ? super V1, ? super V2, ? extends VOut> joiner;
private final KeyValueMapper<? super K1, ? super V1, ? extends K2> mapper;
private final boolean leftJoin;
KStreamGlobalKTableJoin(final KTableValueGetterSupplier<K2, V2> valueGetterSupplier,
final ValueJoinerWithKey<? super K1, ? super V1, ? super V2, ? extends VOut> joiner,
final KeyValueMapper<? super K1, ? super V1, ? extends K2> mapper,
final boolean leftJoin) {
this.valueGetterSupplier = valueGetterSupplier;
this.joiner = joiner;
this.mapper = mapper;
this.leftJoin = leftJoin;
}
@Override
public Processor<K1, V1, K1, VOut> get() {
return new KStreamKTableJoinProcessor<>(valueGetterSupplier.get(), mapper, joiner, leftJoin);
}
}
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