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 */ 017 package org.apache.commons.discovery.ant; 018 019 import java.util.Vector; 020 021 import org.apache.commons.discovery.ResourceNameIterator; 022 import org.apache.commons.discovery.jdk.JDKHooks; 023 import org.apache.commons.discovery.resource.DiscoverResources; 024 025 026 /** 027 * Small ant task that will use discovery to locate a particular impl. 028 * and display all values. 029 * 030 * You can execute this and save it with an id, then other classes can use it. 031 * 032 * @author Costin Manolache 033 */ 034 public class ServiceDiscoveryTask 035 { 036 String name; 037 int debug=0; 038 String[] drivers = null; 039 040 public void setServiceName(String name ) { 041 this.name=name; 042 } 043 044 public void setDebug(int i) { 045 this.debug=i; 046 } 047 048 public String[] getServiceInfo() { 049 return drivers; 050 } 051 052 public void execute() throws Exception { 053 System.out.println("XXX "); 054 055 DiscoverResources disc = new DiscoverResources(); 056 disc.addClassLoader( JDKHooks.getJDKHooks().getThreadContextClassLoader() ); 057 disc.addClassLoader( this.getClass().getClassLoader() ); 058 059 ResourceNameIterator iterator = disc.findResources(name); 060 061 Vector vector = new Vector(); 062 while (iterator.hasNext()) { 063 String resourceInfo = iterator.nextResourceName(); 064 vector.add(resourceInfo); 065 if( debug > 0 ) { 066 System.out.println("Found " + resourceInfo); 067 } 068 } 069 070 drivers = new String[vector.size()]; 071 vector.copyInto(drivers); 072 } 073 074 }