summaryrefslogtreecommitdiffstats
path: root/sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java
diff options
context:
space:
mode:
Diffstat (limited to 'sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java')
-rw-r--r--sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java194
1 files changed, 0 insertions, 194 deletions
diff --git a/sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java b/sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java
deleted file mode 100644
index d40c37e4be..0000000000
--- a/sca-java-2.x/branches/2.0-Beta3/modules/extensibility/src/main/java/org/apache/tuscany/sca/extensibility/ContextClassLoaderServiceDiscoverer.java
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
- * 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.tuscany.sca.extensibility;
-
-import java.io.IOException;
-import java.lang.ref.WeakReference;
-import java.net.URL;
-import java.security.AccessController;
-import java.security.PrivilegedAction;
-import java.security.PrivilegedActionException;
-import java.security.PrivilegedExceptionAction;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Enumeration;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
-/**
- * A ServiceDiscoverer that find META-INF/services/... using the Context ClassLoader.
- *
- * @version $Rev$ $Date$
- */
-public class ContextClassLoaderServiceDiscoverer implements ServiceDiscoverer {
- private static final Logger logger = Logger.getLogger(ContextClassLoaderServiceDiscoverer.class.getName());
-
- public class ServiceDeclarationImpl implements ServiceDeclaration {
- private URL url;
- private String className;
- private Class<?> javaClass;
- private Map<String, String> attributes;
-
- public ServiceDeclarationImpl(URL url, String className, Map<String, String> attributes) {
- super();
- this.url = url;
- this.className = className;
- this.attributes = attributes;
- }
-
- public Map<String, String> getAttributes() {
- return attributes;
- }
-
- public String getClassName() {
- return className;
- }
-
- public URL getLocation() {
- return url;
- }
-
- public Class<?> loadClass() throws ClassNotFoundException {
- if (className == null) {
- return null;
- }
- if (javaClass == null) {
- javaClass = loadClass(className);
- }
- return javaClass;
- }
-
- public Class<?> loadClass(String className) throws ClassNotFoundException {
- return Class.forName(className, false, classLoaderReference.get());
- }
-
- @Override
- public String toString() {
- StringBuffer sb = new StringBuffer();
- sb.append("Location: ").append(url);
- sb.append(" ClassLoader: ").append(classLoaderReference.get());
- sb.append(" Attributes: ").append(attributes);
- return sb.toString();
- }
-
- public URL getResource(final String name) {
- return AccessController.doPrivileged(new PrivilegedAction<URL>() {
- public URL run() {
- return classLoaderReference.get().getResource(name);
- }
- });
- }
-
- public boolean isAssignableTo(Class<?> serviceType) {
- try {
- loadClass();
- } catch (ClassNotFoundException e) {
- // Ignore
- }
- return (javaClass != null && serviceType.isAssignableFrom(javaClass));
- }
-
- @Override
- public Enumeration<URL> getResources(String name) throws IOException {
- return Collections.enumeration(ContextClassLoaderServiceDiscoverer.this.getResources(name));
- }
- }
-
- private WeakReference<ClassLoader> classLoaderReference;
-
- public ContextClassLoaderServiceDiscoverer() {
- ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
- this.classLoaderReference = new WeakReference<ClassLoader>(classLoader);
- }
-
- public ContextClassLoaderServiceDiscoverer(ClassLoader classLoader) {
- if (classLoader == null) {
- classLoader = Thread.currentThread().getContextClassLoader();
- }
- this.classLoaderReference = new WeakReference<ClassLoader>(classLoader);
- }
-
- public ClassLoader getContextClassLoader() {
- //return classLoaderReference.get();
- return Thread.currentThread().getContextClassLoader();
- }
-
- private Collection<URL> getResources(final String name) throws IOException {
- try {
- return AccessController.doPrivileged(new PrivilegedExceptionAction<Collection<URL>>() {
- public Collection<URL> run() throws IOException {
- List<URL> urls = Collections.list(classLoaderReference.get().getResources(name));
- // Eliminate the duplicate URLs (which can be found from child/parent classloaders)
- return new HashSet<URL>(urls);
- }
- });
- } catch (PrivilegedActionException e) {
- throw (IOException)e.getException();
- }
- }
-
- public ServiceDeclaration getServiceDeclaration(String name) throws IOException {
- Collection<ServiceDeclaration> declarations = getServiceDeclarations(name);
- if (declarations.isEmpty()) {
- return null;
- } else {
- return declarations.iterator().next();
- }
- }
-
- public Collection<ServiceDeclaration> getServiceDeclarations(String serviceName) {
- Collection<ServiceDeclaration> descriptors = new HashSet<ServiceDeclaration>();
-
- // http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/xpath/XPathFactory.html
- boolean isPropertyFile = "javax.xml.xpath.XPathFactory".equals(serviceName);
-
- String name = serviceName;
- if (serviceName.startsWith("/")) {
- // If the service name starts with /, treat it as the entry name
- name = serviceName.substring(1);
- } else {
- // Use JDK SPI pattern
- name = "META-INF/services/" + serviceName;
- }
-
- boolean debug = logger.isLoggable(Level.FINE);
- try {
- for (final URL url : getResources(name)) {
- if (debug) {
- logger.fine("Reading service provider file: " + url.toExternalForm());
- }
-
- for (Map<String, String> attributes : ServiceDeclarationParser.load(url, isPropertyFile)) {
- String className = attributes.get("class");
- ServiceDeclarationImpl descriptor = new ServiceDeclarationImpl(url, className, attributes);
- descriptors.add(descriptor);
- }
- }
- } catch (IOException e) {
- logger.log(Level.SEVERE, e.getMessage(), e);
- }
- return descriptors;
-
- }
-
-}