/*
* 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.annotation.VisibleForTesting;
import org.apache.flink.util.StringBasedID;
/**
* This class represents a key that uniquely identifies (on a logical level) state handles for
* registration in the {@link SharedStateRegistry}. Two files which should logically
* be the same should have the same {@link SharedStateRegistryKey}. The meaning of logical
* equivalence is up to the application.
*/
public class SharedStateRegistryKey extends StringBasedID {
private static final long serialVersionUID = 1L;
public SharedStateRegistryKey(String prefix, StateHandleID stateHandleID) {
super(prefix + '-' + stateHandleID);
}
@VisibleForTesting
public SharedStateRegistryKey(String keyString) {
super(keyString);
}
}