001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.activemq.broker.region.group; 018 019import java.io.IOException; 020import java.util.Map; 021 022import org.apache.activemq.util.FactoryFinder; 023import org.apache.activemq.util.IOExceptionSupport; 024import org.apache.activemq.util.IntrospectionSupport; 025import org.apache.activemq.util.URISupport; 026 027public class GroupFactoryFinder { 028 private static final FactoryFinder GROUP_FACTORY_FINDER = new FactoryFinder("META-INF/services/org/apache/activemq/groups/"); 029 030 private GroupFactoryFinder() { 031 } 032 033 public static MessageGroupMapFactory createMessageGroupMapFactory(String type) throws IOException { 034 try { 035 Map<String,String> properties = null; 036 String factoryType = type.trim(); 037 int p = factoryType.indexOf('?'); 038 if (p >= 0){ 039 String propertiesString = factoryType.substring(p+1); 040 factoryType = factoryType.substring(0,p); 041 properties = URISupport.parseQuery(propertiesString); 042 } 043 MessageGroupMapFactory result = (MessageGroupMapFactory)GROUP_FACTORY_FINDER.newInstance(factoryType); 044 if (properties != null && result != null){ 045 IntrospectionSupport.setProperties(result,properties); 046 } 047 return result; 048 049 } catch (Throwable e) { 050 throw IOExceptionSupport.create("Could not load " + type + " factory:" + e, e); 051 } 052 } 053 054 055}