001 /* 002 * Copyright 2005,2009 Ivan SZKIBA 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 package org.ini4j; 017 018 import java.net.MalformedURLException; 019 import java.net.URL; 020 021 import javax.servlet.ServletContext; 022 import javax.servlet.ServletContextEvent; 023 import javax.servlet.ServletContextListener; 024 025 public class IniPreferencesFactoryListener extends IniPreferencesFactory implements ServletContextListener 026 { 027 public static final String DEFAULT_USER_LOCATION = "/WEB-INF/user.ini"; 028 public static final String DEFAULT_SYSTEM_LOCATION = "/WEB-INF/system.ini"; 029 private ServletContext _context; 030 031 @Override public void contextDestroyed(ServletContextEvent event) 032 { 033 _context = null; 034 } 035 036 @Override public void contextInitialized(ServletContextEvent event) 037 { 038 _context = event.getServletContext(); 039 System.setProperty("java.util.prefs.PreferencesFactory", getClass().getName()); 040 } 041 042 @Override protected String getIniLocation(String key) 043 { 044 String location = _context.getInitParameter(key); 045 046 if (location == null) 047 { 048 location = key.equals(KEY_USER) ? DEFAULT_USER_LOCATION : DEFAULT_SYSTEM_LOCATION; 049 } 050 051 return location; 052 } 053 054 @Override protected URL getResource(String location) throws IllegalArgumentException 055 { 056 try 057 { 058 URL url = _context.getResource(location); 059 060 if (url == null) 061 { 062 url = super.getResource(location); 063 } 064 065 return url; 066 } 067 catch (MalformedURLException x) 068 { 069 throw (IllegalArgumentException) new IllegalArgumentException().initCause(x); 070 } 071 } 072 }