kafka WindowStoreIterator 源码
kafka WindowStoreIterator 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/state/WindowStoreIterator.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.state;
import java.time.Instant;
import org.apache.kafka.streams.KeyValue;
import java.io.Closeable;
/**
* Iterator interface of {@link KeyValue} with key typed {@link Long} used for {@link WindowStore#fetch(Object, long, long)}
* and {@link WindowStore#fetch(Object, Instant, Instant)}
*
* Users must call its {@code close} method explicitly upon completeness to release resources,
* or use try-with-resources statement (available since JDK7) for this {@link Closeable} class.
*
* @param <V> Type of values
*/
public interface WindowStoreIterator<V> extends KeyValueIterator<Long, V>, Closeable {
@Override
void close();
}
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