/*
 * 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.geode.cache.util;

/**
 * TimestampedEntryEvent is an EntryEvent that has additional information provided to
 * GatewayConflictResolver plugins. It holds the low 4 bytes of the millisecond clock value from the
 * point of origin of the event and the distributed system ID of the system that caused the change.
 * It also has this information for the previous change to the entry.
 * 
 * @since GemFire 7.0
 */
public interface TimestampedEntryEvent extends org.apache.geode.cache.EntryEvent {
  // note that this interface inherits the following methods, among others:
  // getRegion(), getOperation(), getCallbackArgument()
  // getKey()
  // getOldValue(), getNewValue()
  // getSerializedOldValue(), getSerializedNewValue()

  public int getNewDistributedSystemID();

  public int getOldDistributedSystemID();

  public long getNewTimestamp();

  public long getOldTimestamp();
}
