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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.felix.ipojo.xml.parser;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.net.URL;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span><a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.xml.sax.EntityResolver;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.xml.sax.InputSource;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.xml.sax.SAXException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>/**<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * Entity Resolver loading embedded XML Schemas.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * This resolver avoid using a network connection to get schemas as they<a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * are loaded from the manipulator jar file.<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.33"></a> |
| <span class="sourceLineNo">034</span> */<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>public class SchemaResolver implements EntityResolver {<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> <a name="line.36"></a> |
| <span class="sourceLineNo">037</span> /**<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * Directory where embedded schemas are copied.<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> public static final String XSD_PATH = "xsd";<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> /**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Resolves systemIds to use embedded schemas. The schemas are loaded from<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * the {@link SchemaResolver#XSD_PATH} directory with the current classloader.<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * @param publicId the publicId<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * @param systemId the systemId (Schema URL)<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * @return the InputSource to load the schemas or <code>null</code> if the schema<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * cannot be loaded (not embedded)<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * @throws SAXException cannot happen <a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * @throws IOException when the embedded resource cannot be read correctly<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String)<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> public InputSource resolveEntity(String publicId, String systemId)<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> throws SAXException, IOException {<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> <a name="line.55"></a> |
| <span class="sourceLineNo">056</span> URL url = getURL(systemId);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> if (url == null) {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> // Cannot found the resource<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> return null;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> } else {<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> return new InputSource(url.openStream());<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> <a name="line.63"></a> |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> <a name="line.65"></a> |
| <span class="sourceLineNo">066</span> /**<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * Computes the local URL of the given system Id.<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * This URL is computed by trying to load the resource from<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * the current classloader. First, the last fragment (file name) of the system id<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * url is extracted and the file is loaded from the {@link SchemaResolver#XSD_PATH}<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * directory ('xsd/extracted') <a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * @param id the systemId to load<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @return the URL to the resources or <code>null</code> if the resource cannot be found.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private URL getURL(String id) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> int index = id.lastIndexOf('/');<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> String fragment = id.substring(index);<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> return this.getClass().getClassLoader().getResource(XSD_PATH + fragment);<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span>}<a name="line.81"></a> |
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