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/*
 * Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
 *
 * Licensed 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. See accompanying
 * LICENSE file.
 */
package com.gemstone.gemfire.cache.util;

import com.gemstone.gemfire.cache.EntryEvent;

/**
 * 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 7.0
 * @author Bruce Schuchardt
 */
public interface TimestampedEntryEvent extends 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();
}