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 */ 017package org.apache.xbean.spring.context.impl; 018 019/** 020 * A helper class for turning namespaces into META-INF/services URIs 021 * 022 * @version $Revision: 1.1 $ 023 */ 024public class NamespaceHelper { 025 public static final String META_INF_PREFIX = "META-INF/services/org/apache/xbean/spring/"; 026 public static final String OLD_META_INF_PREFIX = "META-INF/services/org/xbean/spring/"; 027 028 /** 029 * Converts the namespace and localName into a valid path name we can use on 030 * the classpath to discover a text file 031 */ 032 public static String createDiscoveryPathName(String uri, String localName) { 033 if (isEmpty(uri)) { 034 return localName; 035 } 036 return createDiscoveryPathName(uri) + "/" + localName; 037 } 038 039 /** 040 * Converts the namespace and localName into a valid path name we can use on 041 * the classpath to discover a text file 042 */ 043 public static String createDiscoveryPathName(String uri) { 044 // TODO proper encoding required 045 // lets replace any dodgy characters 046 return META_INF_PREFIX + uri.replaceAll("://", "/").replace(':', '/').replace(' ', '_'); 047 } 048 049 /** 050 * Creates the old URI for backwards compatibility 051 */ 052 public static String createDiscoveryOldPathName(String uri) { 053 // TODO proper encoding required 054 // lets replace any dodgy characters 055 return OLD_META_INF_PREFIX + uri.replaceAll("://", "/").replace(':', '/').replace(' ', '_'); 056 } 057 058 public static boolean isEmpty(String uri) { 059 return uri == null || uri.length() == 0; 060 } 061 062}