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Posted to commons-dev@ws.apache.org by di...@apache.org on 2008/04/15 23:41:19 UTC
svn commit: r648423 - in
/webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi:
AssertionBuilderFactory.java util/Service.java
Author: dims
Date: Tue Apr 15 14:41:15 2008
New Revision: 648423
URL: http://svn.apache.org/viewvc?rev=648423&view=rev
Log:
Fix for WSCOMMONS-322 - Get rid of sun.misc.Service
Added:
webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/util/Service.java
Modified:
webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/AssertionBuilderFactory.java
Modified: webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/AssertionBuilderFactory.java
URL: http://svn.apache.org/viewvc/webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/AssertionBuilderFactory.java?rev=648423&r1=648422&r2=648423&view=diff
==============================================================================
--- webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/AssertionBuilderFactory.java (original)
+++ webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/AssertionBuilderFactory.java Tue Apr 15 14:41:15 2008
@@ -27,8 +27,7 @@
import org.apache.axiom.om.OMElement;
import org.apache.neethi.builders.AssertionBuilder;
import org.apache.neethi.builders.xml.XMLPrimitiveAssertionBuilder;
-
-import sun.misc.Service;
+import org.apache.neethi.util.Service;
/**
* AssertionFactory is used to create an Assertion from an OMElement. It uses an
Added: webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/util/Service.java
URL: http://svn.apache.org/viewvc/webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/util/Service.java?rev=648423&view=auto
==============================================================================
--- webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/util/Service.java (added)
+++ webservices/commons/trunk/modules/neethi/src/main/java/org/apache/neethi/util/Service.java Tue Apr 15 14:41:15 2008
@@ -0,0 +1,157 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.neethi.util;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.net.URL;
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * This class handles looking up service providers on the class path.
+ * It implements the system described in:
+ *
+ * <a href='http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#Service Provider'>JAR
+ * File Specification Under Service Provider</a>. Note that this
+ * interface is very similar to the one they describe which seems to
+ * be missing in the JDK.
+ *
+ * @author <a href="mailto:Thomas.DeWeeese@Kodak.com">Thomas DeWeese</a>
+ * @version $Id$
+ */
+public class Service {
+
+ // Remember providers we have looked up before.
+ static Map classMap = new java.util.HashMap();
+ static Map instanceMap = new java.util.HashMap();
+
+ /**
+ * Returns an iterator where each element should implement the
+ * interface (or subclass the baseclass) described by cls. The
+ * Classes are found by searching the classpath for service files
+ * named: 'META-INF/services/<fully qualified classname> that list
+ * fully qualifted classnames of classes that implement the
+ * service files classes interface. These classes must have
+ * default constructors.
+ *
+ * @param cls The class/interface to search for providers of.
+ */
+ public static synchronized Iterator providers(Class cls) {
+ return providers(cls, true);
+ }
+
+ /**
+ * Returns an iterator where each element should implement the
+ * interface (or subclass the baseclass) described by cls. The
+ * Classes are found by searching the classpath for service files
+ * named: 'META-INF/services/<fully qualified classname> that list
+ * fully qualifted classnames of classes that implement the
+ * service files classes interface. These classes must have
+ * default constructors if returnInstances is true.
+ *
+ * @param cls The class/interface to search for providers of.
+ * @param returnInstances true if the iterator should return instances rather than class names.
+ */
+ public static synchronized Iterator providers(Class cls, boolean returnInstances) {
+ String serviceFile = "META-INF/services/" + cls.getName();
+ Map cacheMap = (returnInstances ? instanceMap : classMap);
+
+ List l = (List)cacheMap.get(serviceFile);
+ if (l != null) {
+ return l.iterator();
+ }
+
+ l = new java.util.ArrayList();
+ cacheMap.put(serviceFile, l);
+
+ ClassLoader cl = null;
+ try {
+ cl = cls.getClassLoader();
+ } catch (SecurityException se) {
+ // Ooops! can't get his class loader.
+ }
+ // Can always request your own class loader. But it might be 'null'.
+ if (cl == null) cl = Service.class.getClassLoader();
+ if (cl == null) cl = ClassLoader.getSystemClassLoader();
+
+ // No class loader so we can't find 'serviceFile'.
+ if (cl == null) return l.iterator();
+
+ Enumeration e;
+ try {
+ e = cl.getResources(serviceFile);
+ } catch (IOException ioe) {
+ return l.iterator();
+ }
+
+ while (e.hasMoreElements()) {
+ try {
+ URL u = (URL)e.nextElement();
+
+ InputStream is = u.openStream();
+ Reader r = new InputStreamReader(is, "UTF-8");
+ BufferedReader br = new BufferedReader(r);
+
+ String line = br.readLine();
+ while (line != null) {
+ try {
+ // First strip any comment...
+ int idx = line.indexOf('#');
+ if (idx != -1)
+ line = line.substring(0, idx);
+
+ // Trim whitespace.
+ line = line.trim();
+
+ // If nothing left then loop around...
+ if (line.length() == 0) {
+ line = br.readLine();
+ continue;
+ }
+
+ if (returnInstances) {
+ // Try and load the class
+ Object obj = cl.loadClass(line).newInstance();
+ // stick it into our vector...
+ l.add(obj);
+ } else {
+ l.add(line);
+ }
+ } catch (Exception ex) {
+ // Just try the next line
+ }
+ line = br.readLine();
+ }
+ } catch (Exception ex) {
+ // Just try the next file...
+ } catch (LinkageError le) {
+ // Just try the next file...
+ }
+ }
+ return l.iterator();
+ }
+
+}
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