| /* |
| * 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.internal.cache; |
| |
| import org.apache.geode.cache.CacheRuntimeException; |
| import org.apache.geode.cache.CommitConflictException; |
| import org.apache.geode.cache.Region; |
| |
| /** |
| * TXEntryUserAttrState is the entity that tracks transactional changes to an entry user attribute. |
| * |
| * |
| * @since GemFire 4.0 |
| * |
| */ |
| public class TXEntryUserAttrState { |
| private final Object originalValue; |
| private Object pendingValue; |
| |
| public TXEntryUserAttrState(Object originalValue) { |
| this.originalValue = originalValue; |
| this.pendingValue = originalValue; |
| } |
| |
| public Object getOriginalValue() { |
| return this.originalValue; |
| } |
| |
| public Object getPendingValue() { |
| return this.pendingValue; |
| } |
| |
| public Object setPendingValue(Object pv) { |
| Object result = this.pendingValue; |
| this.pendingValue = pv; |
| return result; |
| } |
| |
| void checkForConflict(InternalRegion r, Object key) throws CommitConflictException { |
| Object curCmtValue = r.basicGetEntryUserAttribute(key); |
| if (this.originalValue != curCmtValue) { |
| throw new CommitConflictException( |
| String.format( |
| "Entry user attribute for key %s on region %s had already been changed to %s", |
| new Object[] {key, r.getFullPath(), curCmtValue})); |
| } |
| } |
| |
| void applyChanges(InternalRegion r, Object key) { |
| try { |
| Region.Entry re = r.getEntry(key); |
| re.setUserAttribute(this.pendingValue); |
| } catch (CacheRuntimeException ignore) { |
| // ignore any exceptions since we have already locked and |
| // found no conflicts. |
| } |
| } |
| } |