MigrationUtil.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.flink.migration;

import org.apache.flink.migration.state.MigrationKeyGroupStateHandle;
import org.apache.flink.runtime.state.KeyedStateHandle;

import java.util.Collection;

public class MigrationUtil {

	@SuppressWarnings("deprecation")
	public static boolean isOldSavepointKeyedState(Collection<KeyedStateHandle> keyedStateHandles) {
		return (keyedStateHandles != null)
				&& (keyedStateHandles.size() == 1)
				&& (keyedStateHandles.iterator().next() instanceof MigrationKeyGroupStateHandle);
	}

}