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 * bstefanescu 018 */ 019package org.nuxeo.ecm.core.event.script; 020 021import java.io.File; 022import java.io.IOException; 023import java.io.InputStreamReader; 024import java.io.Reader; 025import java.net.URL; 026 027/** 028 * Script that comes from a JAR. 029 * 030 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 031 */ 032public class JARFileScript extends Script { 033 034 protected final URL url; 035 036 protected final File jar; 037 038 public JARFileScript(File jar, URL url) { 039 this.url = url; 040 this.jar = jar; 041 } 042 043 @Override 044 public String getExtension() { 045 return getExtension(url.getPath()); 046 } 047 048 @Override 049 public String getLocation() { 050 return url.toExternalForm(); 051 } 052 053 @Override 054 public Reader getReader() throws IOException { 055 return new InputStreamReader(url.openStream()); 056 } 057 058 @Override 059 public Reader getReaderIfModified() throws IOException { 060 long tm = jar.lastModified(); 061 if (tm > lastModified) { 062 synchronized (this) { 063 if (tm > lastModified) { 064 lastModified = tm; 065 return new InputStreamReader(url.openStream()); 066 } 067 } 068 } 069 return null; 070 } 071 072}