001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Florent Guillaume 018 */ 019package org.nuxeo.ecm.core.storage.sql; 020 021import java.util.ArrayList; 022import java.util.Collection; 023 024/** 025 * Propagator of invalidations to a set of {@link InvalidationsQueue}s. 026 */ 027public class InvalidationsPropagator { 028 029 public final ArrayList<InvalidationsQueue> queues; // used synchronized 030 031 public InvalidationsPropagator() { 032 queues = new ArrayList<InvalidationsQueue>(); 033 } 034 035 public synchronized void addQueue(InvalidationsQueue queue) { 036 if (!queues.contains(queue)) { 037 queues.add(queue); 038 } 039 } 040 041 public synchronized void removeQueue(InvalidationsQueue queue) { 042 queues.remove(queue); 043 } 044 045 @SuppressWarnings("unchecked") 046 public void propagateInvalidations(Invalidations invalidations, InvalidationsQueue skipQueue) { 047 Collection<InvalidationsQueue> qq; 048 synchronized (this) { 049 qq = (Collection<InvalidationsQueue>) queues.clone(); 050 } 051 for (InvalidationsQueue q : qq) { 052 if (q != skipQueue) { 053 q.addInvalidations(invalidations); 054 } 055 } 056 } 057 058}