001 /* 002 * Copyright 2005 [ini4j] Development Team 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 */ 016 017 package org.ini4j; 018 019 import java.net.URL; 020 import java.net.MalformedURLException; 021 022 import javax.servlet.ServletContext; 023 import javax.servlet.ServletContextEvent; 024 import javax.servlet.ServletContextListener; 025 026 public class IniPreferencesFactoryListener extends IniPreferencesFactory implements ServletContextListener 027 { 028 public static final String DEFAULT_USER_LOCATION = "/WEB-INF/user.ini"; 029 public static final String DEFAULT_SYSTEM_LOCATION = "/WEB-INF/system.ini"; 030 private ServletContext _context; 031 032 public void contextInitialized(ServletContextEvent event) 033 { 034 _context = event.getServletContext(); 035 System.setProperty("java.util.prefs.PreferencesFactory", getClass().getName()); 036 } 037 038 public void contextDestroyed(ServletContextEvent event) 039 { 040 _context = null; 041 } 042 043 protected String getIniLocation(String key) 044 { 045 String location = _context.getInitParameter(key); 046 047 if ( location == null ) 048 { 049 location = key.equals(KEY_USER) ? DEFAULT_USER_LOCATION : DEFAULT_SYSTEM_LOCATION; 050 } 051 052 return location; 053 } 054 055 protected URL getResource(String location) throws IllegalArgumentException 056 { 057 try 058 { 059 URL url = _context.getResource(location); 060 061 if ( url == null ) 062 { 063 url = super.getResource(location); 064 } 065 066 return url; 067 } 068 catch (MalformedURLException x) 069 { 070 throw (IllegalArgumentException)new IllegalArgumentException().initCause(x); 071 } 072 } 073 }