001/* 002 * (C) Copyright 2006-2020 Nuxeo (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; 020 021import java.util.ArrayList; 022import java.util.List; 023 024import org.nuxeo.runtime.pubsub.SerializableAccumulableInvalidations; 025 026/** 027 * Propagator of invalidations to a set of {@link InvalidationsQueue}s. 028 * 029 * @param <T> the type of invalidations 030 * @since 11.1 031 */ 032public class InvalidationsPropagator<T extends SerializableAccumulableInvalidations> { 033 034 public final List<InvalidationsQueue<T>> queues; // used synchronized 035 036 public InvalidationsPropagator() { 037 queues = new ArrayList<>(); 038 } 039 040 public synchronized void addQueue(InvalidationsQueue<T> queue) { 041 if (!queues.contains(queue)) { 042 queues.add(queue); 043 } 044 } 045 046 public synchronized void removeQueue(InvalidationsQueue<T> queue) { 047 queues.remove(queue); 048 } 049 050 @SuppressWarnings("unchecked") 051 public void propagateInvalidations(T invalidations, InvalidationsQueue<T> skipQueue) { 052 List<InvalidationsQueue<T>> qq; 053 synchronized (this) { 054 qq = (List<InvalidationsQueue<T>>) ((ArrayList<InvalidationsQueue<T>>) queues).clone(); 055 } 056 for (InvalidationsQueue<T> q : qq) { 057 if (q != skipQueue) { 058 q.addInvalidations(invalidations); 059 } 060 } 061 } 062 063}