001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * bstefanescu 011 */ 012package org.nuxeo.ecm.core.event.script; 013 014import java.io.File; 015import java.io.IOException; 016import java.io.InputStreamReader; 017import java.io.Reader; 018import java.net.URL; 019 020/** 021 * Script that comes from a JAR. 022 * 023 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 024 */ 025public class JARFileScript extends Script { 026 027 protected final URL url; 028 029 protected final File jar; 030 031 public JARFileScript(File jar, URL url) { 032 this.url = url; 033 this.jar = jar; 034 } 035 036 @Override 037 public String getExtension() { 038 return getExtension(url.getPath()); 039 } 040 041 @Override 042 public String getLocation() { 043 return url.toExternalForm(); 044 } 045 046 @Override 047 public Reader getReader() throws IOException { 048 return new InputStreamReader(url.openStream()); 049 } 050 051 @Override 052 public Reader getReaderIfModified() throws IOException { 053 long tm = jar.lastModified(); 054 if (tm > lastModified) { 055 synchronized (this) { 056 if (tm > lastModified) { 057 lastModified = tm; 058 return new InputStreamReader(url.openStream()); 059 } 060 } 061 } 062 return null; 063 } 064 065}