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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;
import java.util.*;
/**
* An event that describes the culmination of an entire transaction.
* It either describes the work done by a committed transaction
* or the work abandoned by an explicit rollback or failed commit.
* The actual work is represented by an ordered list of {@link EntryEvent}
* instances.
*
*
A TransactionListener receives an instance of this
* class allowing exploration of the resultant operations. The
* resultant operation is the final result of, potentially, a sequence
* of operations on a key such that earlier operations might be
* masked. For example, multiple put operations using the same key
* will result in only one {@link EntryEvent} for that key.
*
*
An instance of TransactionEvent for the same transaction on
* the originating VM may differ from a recipient VM. The amount of
* variation will depend on the variation of the state of Entries on
* each VM. One reason for why this might occur is the different
* Expiration/Eviction settings of the similar Regions on different
* VMs.
*
*
The event lists are ordered according to the chronological order of
* the indiviual operations.
*
*
The {@link EntryEvent} instances always return null
* as their {@link CacheEvent#getCallbackArgument callback argument}.
*
* @author Mitch Thomas
*
* @see TransactionListener
* @see EntryEvent
* @since 4.0
*/
public interface TransactionEvent {
/** Gets the TransactionId associated this TransactionEvent.
*
*/
public TransactionId getTransactionId();
// TODO: TX: ask Sudhir if we can remove the deprecated methods below for 7.0
/** Gets all "create" EntryEvents for this transaction;
* Region.create and/or Region.put
*
* @return List of EntryEvents or Collections.EMPTY_LIST
* @deprecated as of GemFire 5.0, use {@link #getEvents} instead
*/
@Deprecated
public List> getCreateEvents();
/** Gets all "destroy" EntryEvents for this
* transaction; Region.destroy and
* Region.localDestroy.
*
* @return List of EntryEvents or Collections.EMPTY_LIST
* @deprecated as of GemFire 5.0, use {@link #getEvents} instead
*/
@Deprecated
public List> getDestroyEvents();
/** Gets all Region.put EntryEvents for this transaction.
*
* @return List of EntryEvents or Collections.EMPTY_LIST
* @deprecated as of GemFire 5.0, use {@link #getEvents} instead
*/
@Deprecated
public List> getPutEvents();
/** Gets all "invalidate" EntryEvents for this transaction;
* Region.invalidate and
* Region.localInvalidate.
*
* @return List of EntryEvents or Collections.EMPTY_LIST
* @deprecated as of GemFire 5.0, use {@link #getEvents} instead
*/
@Deprecated
public List> getInvalidateEvents();
/**
* Returns an ordered list of every {@link CacheEvent} for this transaction.
* The event order is consistent with the order in which the operations were
* performed during the transaction.
* @return an unmodifiable List of all the {@link CacheEvent} instances;
* one for each operation performed by this transaction.
* @since 5.0
*/
public List> getEvents();
/** Gets the Cache for this transaction event
*
* @return Cache
*/
public Cache getCache();
}