/*
 * 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.ignite.internal.processors.cache.version;

import org.apache.ignite.IgniteCheckedException;
import org.apache.ignite.internal.processors.cache.CacheObjectValueContext;

/**
 * Cache version conflict resolver.
 */
public interface CacheVersionConflictResolver {
    /**
     * Resolve the conflict.
     *
     * @param oldEntry Old entry.
     * @param newEntry New entry.
     * @param atomicVerComparator Whether to use atomic version comparator.
     * @return Conflict resolution context.
     * @throws IgniteCheckedException If failed.
     */
    public <K, V> GridCacheVersionConflictContext<K, V> resolve(
        CacheObjectValueContext ctx,
        GridCacheVersionedEntryEx<K, V> oldEntry,
        GridCacheVersionedEntryEx<K, V> newEntry,
        boolean atomicVerComparator
    ) throws IgniteCheckedException;
}