org.apache.flink.runtime.state.StateHandleID Maven / Gradle / Ivy
/*
* 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.flink.runtime.state;
import org.apache.flink.util.StringBasedID;
/**
* Unique ID that allows for logical comparison between state handles.
*
* Two state handles that are considered as logically equal should always return the same ID
* (whatever logically equal means is up to the implementation). For example, this could be based on
* the string representation of the full filepath for a state that is based on a file.
*/
public class StateHandleID extends StringBasedID {
private static final long serialVersionUID = 1L;
public StateHandleID(String keyString) {
super(keyString);
}
}