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package org.mule.util; |
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import java.net.URL; |
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import java.net.URLStreamHandler; |
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import java.net.URLStreamHandlerFactory; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.StringTokenizer; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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31 | 0 | public class MuleUrlStreamHandlerFactory extends Object implements URLStreamHandlerFactory |
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{ |
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private static final String HANDLER_PKGS_SYSTEM_PROPERTY = "java.protocol.handler.pkgs"; |
35 | 0 | private static final Log log = LogFactory.getLog(MuleUrlStreamHandlerFactory.class); |
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37 | 0 | private static Map registry = Collections.synchronizedMap(new HashMap()); |
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public static synchronized void installUrlStreamHandlerFactory() |
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{ |
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try |
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{ |
59 | 0 | URL.setURLStreamHandlerFactory(new MuleUrlStreamHandlerFactory()); |
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} |
61 | 0 | catch (Error err) |
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{ |
63 | 0 | if (log.isDebugEnabled()) |
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{ |
65 | 0 | log.debug("Custom MuleUrlStreamHandlerFactory already registered", err); |
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} |
67 | 0 | } |
68 | 0 | } |
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public static void registerHandler(String protocol, URLStreamHandler handler) |
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{ |
72 | 0 | registry.put(protocol, handler); |
73 | 0 | } |
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public URLStreamHandler createURLStreamHandler(String protocol) |
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{ |
77 | 0 | URLStreamHandler handler = (URLStreamHandler) registry.get(protocol); |
78 | 0 | if (handler == null) |
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{ |
80 | 0 | handler = this.defaultHandlerCreateStrategy(protocol); |
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} |
82 | 0 | return handler; |
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} |
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private URLStreamHandler defaultHandlerCreateStrategy(String protocol) |
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{ |
87 | 0 | String packagePrefixList = System.getProperty(HANDLER_PKGS_SYSTEM_PROPERTY, ""); |
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89 | 0 | if (packagePrefixList.endsWith("|") == false) |
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{ |
91 | 0 | packagePrefixList += "|sun.net.www.protocol"; |
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} |
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94 | 0 | StringTokenizer tokenizer = new StringTokenizer(packagePrefixList, "|"); |
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96 | 0 | URLStreamHandler handler = null; |
97 | 0 | while (handler == null && tokenizer.hasMoreTokens()) |
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{ |
99 | 0 | String packagePrefix = tokenizer.nextToken().trim(); |
100 | 0 | String className = packagePrefix + "." + protocol + ".Handler"; |
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try |
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{ |
103 | 0 | handler = (URLStreamHandler) ClassUtils.instanciateClass(className); |
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} |
105 | 0 | catch (Exception ex) |
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{ |
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108 | 0 | } |
109 | 0 | } |
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111 | 0 | return handler; |
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} |
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} |