kafka KTableKTableAbstractJoinValueGetterSupplier 源码
kafka KTableKTableAbstractJoinValueGetterSupplier 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/kstream/internals/KTableKTableAbstractJoinValueGetterSupplier.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 java.util.Collections;
import java.util.HashSet;
import java.util.Set;
public abstract class KTableKTableAbstractJoinValueGetterSupplier<K, R, V1, V2> implements KTableValueGetterSupplier<K, R> {
final KTableValueGetterSupplier<K, V1> valueGetterSupplier1;
final KTableValueGetterSupplier<K, V2> valueGetterSupplier2;
KTableKTableAbstractJoinValueGetterSupplier(final KTableValueGetterSupplier<K, V1> valueGetterSupplier1,
final KTableValueGetterSupplier<K, V2> valueGetterSupplier2) {
this.valueGetterSupplier1 = valueGetterSupplier1;
this.valueGetterSupplier2 = valueGetterSupplier2;
}
@Override
public String[] storeNames() {
final String[] storeNames1 = valueGetterSupplier1.storeNames();
final String[] storeNames2 = valueGetterSupplier2.storeNames();
final Set<String> stores = new HashSet<>(storeNames1.length + storeNames2.length);
Collections.addAll(stores, storeNames1);
Collections.addAll(stores, storeNames2);
return stores.toArray(new String[0]);
}
}
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