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Posted to commits@sling.apache.org by ro...@apache.org on 2017/11/07 09:19:28 UTC
[sling-org-apache-sling-commons-classloader] 01/21: SLING-1007 :
Initial work of a dynamic class loader loading classes through package
admin. In addition dynamic class loader providers can be registered.
This is an automated email from the ASF dual-hosted git repository.
rombert pushed a commit to annotated tag org.apache.sling.commons.classloader-0.9.0
in repository https://gitbox.apache.org/repos/asf/sling-org-apache-sling-commons-classloader.git
commit 046ba4fd01b89045e0b0c13bcdf2e87f8073b3e7
Author: Carsten Ziegeler <cz...@apache.org>
AuthorDate: Mon Jul 6 19:53:28 2009 +0000
SLING-1007 : Initial work of a dynamic class loader loading classes through package admin. In addition dynamic class loader providers can be registered.
git-svn-id: https://svn.apache.org/repos/asf/sling/trunk/contrib/commons/classloader@791586 13f79535-47bb-0310-9956-ffa450edef68
---
LICENSE | 202 +++++++++++++++++++++
NOTICE | 9 +
pom.xml | 98 ++++++++++
.../classloader/DynamicClassLoaderManager.java | 34 ++++
.../classloader/DynamicClassLoaderProvider.java | 35 ++++
.../sling/commons/classloader/impl/Activator.java | 80 ++++++++
.../classloader/impl/ClassLoaderFacade.java | 96 ++++++++++
.../impl/DynamicClassLoaderManagerImpl.java | 136 ++++++++++++++
.../classloader/impl/PackageAdminClassLoader.java | 93 ++++++++++
src/main/resources/META-INF/LICENSE | 202 +++++++++++++++++++++
src/main/resources/META-INF/NOTICE | 9 +
11 files changed, 994 insertions(+)
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
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+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
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+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
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+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+ Work and such Derivative Works in Source or Object form.
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+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
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+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
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+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
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+ (c) You must retain, in the Source form of any Derivative Works
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+ any Contribution intentionally submitted for inclusion in the Work
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+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
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+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
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+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
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diff --git a/NOTICE b/NOTICE
new file mode 100644
index 0000000..404f9a9
--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,9 @@
+Apache Sling Commons Class Loader
+Copyright 2009 The Apache Software Foundation
+
+Apache Sling is based on source code originally developed
+by Day Software (http://www.day.com/).
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..87f1013
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!--
+ 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.apache.sling</groupId>
+ <artifactId>sling</artifactId>
+ <version>6</version>
+ <relativePath>../../../parent/pom.xml</relativePath>
+ </parent>
+
+ <artifactId>org.apache.sling.commons.classloader</artifactId>
+ <packaging>bundle</packaging>
+ <version>0.9.0-SNAPSHOT</version>
+
+ <name>Apache Sling Dynamic Class Loader Support</name>
+ <description>
+ This bundle provides support for dynamic class loading used for example by the scripting engines.
+ </description>
+
+ <scm>
+ <connection>scm:svn:http://svn.apache.org/repos/asf/sling/trunk/bundles/commons/classloader</connection>
+ <developerConnection>scm:svn:https://svn.apache.org/repos/asf/sling/trunk/bundles/commons/classloader</developerConnection>
+ <url>http://svn.apache.org/viewvc/sling/trunk/bundles/commons/classloader</url>
+ </scm>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-scr-plugin</artifactId>
+ </plugin>
+ <plugin>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>maven-bundle-plugin</artifactId>
+ <extensions>true</extensions>
+ <configuration>
+ <instructions>
+ <Bundle-Activator>
+ org.apache.sling.commons.classloader.impl.Activator
+ </Bundle-Activator>
+ <Export-Package>
+ org.apache.sling.commons.classloader;version=${pom.version}
+ </Export-Package>
+ <Private-Package>
+ org.apache.sling.commons.classloader.impl
+ </Private-Package>
+ </instructions>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
+ <reporting>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-javadoc-plugin</artifactId>
+ <configuration>
+ <excludePackageNames>
+ org.apache.sling.commons.classloader.impl
+ </excludePackageNames>
+ </configuration>
+ </plugin>
+ </plugins>
+ </reporting>
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.osgi.core</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.felix</groupId>
+ <artifactId>org.osgi.compendium</artifactId>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-api</artifactId>
+ </dependency>
+ </dependencies>
+</project>
diff --git a/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderManager.java b/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderManager.java
new file mode 100644
index 0000000..ff23e78
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderManager.java
@@ -0,0 +1,34 @@
+/*
+ * 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.sling.commons.classloader;
+
+/**
+ * The dynamic class loader manager is a central
+ * service managing all dynamic class loaders.
+ * It provides a class loader that can be used by
+ * bundles requiring access to all publically available
+ * classes.
+ */
+public interface DynamicClassLoaderManager {
+
+ /**
+ * The dynamic class loader.
+ */
+ ClassLoader getDynamicClassLoader();
+}
diff --git a/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderProvider.java b/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderProvider.java
new file mode 100644
index 0000000..04eaf8e
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/DynamicClassLoaderProvider.java
@@ -0,0 +1,35 @@
+/*
+ * 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.sling.commons.classloader;
+
+/**
+ * A dynamic class loader provider allows to provide
+ * class loaders that will be used by the dynamic
+ * class loading mechanism. For instance a JCR class loader
+ * provider could provide some class loader loading classes
+ * from a content repository etc.
+ */
+public interface DynamicClassLoaderProvider {
+
+ /**
+ * Return the class loader used for dynamic class loading.
+ * @return The class loader.
+ */
+ ClassLoader getClassLoader();
+}
diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java b/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java
new file mode 100644
index 0000000..a58d83e
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/impl/Activator.java
@@ -0,0 +1,80 @@
+/*
+ * 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.sling.commons.classloader.impl;
+
+import java.util.Hashtable;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Constants;
+import org.osgi.framework.ServiceRegistration;
+import org.osgi.service.packageadmin.PackageAdmin;
+import org.osgi.util.tracker.ServiceTracker;
+
+/**
+ * This activator registers the dynamic class loader manager.
+ */
+public class Activator implements BundleActivator {
+
+ /** Package admin service name */
+ private static String PACKAGE_ADMIN_NAME = PackageAdmin.class.getName();
+
+ /** A service tracker for the package admin. */
+ private ServiceTracker packageAdminTracker;
+
+ /** The service registration for the dynamic class loader manager. */
+ private ServiceRegistration serviceReg;
+
+ /** The dynamic class loader service. */
+ private DynamicClassLoaderManagerImpl service;
+
+ /**
+ * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
+ */
+ public void start(BundleContext context) throws Exception {
+ this.packageAdminTracker = new ServiceTracker(context, PACKAGE_ADMIN_NAME, null);
+ this.packageAdminTracker.open();
+
+ // register service
+ final Hashtable<String, String> props = new Hashtable<String, String>();
+ props.put(Constants.SERVICE_DESCRIPTION, "Apache Sling Dynamic Class Loader Service");
+ props.put(Constants.SERVICE_VENDOR, "The Apache Software Foundation");
+ this.service = new DynamicClassLoaderManagerImpl(context,
+ (PackageAdmin)this.packageAdminTracker.getService());
+ this.serviceReg = context.registerService(new String[] {DynamicClassLoaderManagerImpl.class.getName()}, service, props);
+ }
+
+ /**
+ * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
+ */
+ public void stop(BundleContext context) throws Exception {
+ if ( this.serviceReg != null ) {
+ this.serviceReg.unregister();
+ this.serviceReg = null;
+ }
+ if ( this.service != null ) {
+ this.service.deactivate();
+ this.service = null;
+ }
+ if ( this.packageAdminTracker != null ) {
+ this.packageAdminTracker.close();
+ this.packageAdminTracker = null;
+ }
+ }
+}
diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/ClassLoaderFacade.java b/src/main/java/org/apache/sling/commons/classloader/impl/ClassLoaderFacade.java
new file mode 100644
index 0000000..1ef22a4
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/impl/ClassLoaderFacade.java
@@ -0,0 +1,96 @@
+/*
+ * 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.sling.commons.classloader.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Enumeration;
+
+
+/**
+ * The <code>ClassLoaderFacade</code> is a facade
+ * for the dynamic class loading.
+ */
+public class ClassLoaderFacade extends ClassLoader {
+
+ private final DynamicClassLoaderManagerImpl manager;
+
+ public ClassLoaderFacade(final DynamicClassLoaderManagerImpl manager) {
+ this.manager = manager;
+ }
+
+ /**
+ * @see java.lang.ClassLoader#getResource(java.lang.String)
+ */
+ public URL getResource(String name) {
+ final ClassLoader[] loaders = manager.getDynamicClassLoaders();
+ for(final ClassLoader cl : loaders) {
+ final URL u = cl.getResource(name);
+ if ( u != null ) {
+ return u;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * @see java.lang.ClassLoader#getResourceAsStream(java.lang.String)
+ */
+ public InputStream getResourceAsStream(String name) {
+ final ClassLoader[] loaders = manager.getDynamicClassLoaders();
+ for(final ClassLoader cl : loaders) {
+ final InputStream i = cl.getResourceAsStream(name);
+ if ( i != null ) {
+ return i;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * @see java.lang.ClassLoader#getResources(java.lang.String)
+ */
+ public Enumeration<URL> getResources(String name) throws IOException {
+ final ClassLoader[] loaders = manager.getDynamicClassLoaders();
+ for(final ClassLoader cl : loaders) {
+ final Enumeration<URL> e = cl.getResources(name);
+ if ( e != null && e.hasMoreElements() ) {
+ return e;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * @see java.lang.ClassLoader#loadClass(java.lang.String)
+ */
+ public Class<?> loadClass(String name) throws ClassNotFoundException {
+ final ClassLoader[] loaders = manager.getDynamicClassLoaders();
+ for(final ClassLoader cl : loaders) {
+ try {
+ final Class<?> c = cl.loadClass(name);
+ return c;
+ } catch (Exception cnfe) {
+ // we just ignore this and try the next class loader
+ }
+ }
+ throw new ClassNotFoundException("Class not found: " + name);
+ }
+}
diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java
new file mode 100644
index 0000000..5257103
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/impl/DynamicClassLoaderManagerImpl.java
@@ -0,0 +1,136 @@
+/*
+ * 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.sling.commons.classloader.impl;
+
+import java.util.Arrays;
+import java.util.Comparator;
+
+import org.apache.sling.commons.classloader.DynamicClassLoaderManager;
+import org.apache.sling.commons.classloader.DynamicClassLoaderProvider;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.service.packageadmin.PackageAdmin;
+import org.osgi.util.tracker.ServiceTracker;
+import org.osgi.util.tracker.ServiceTrackerCustomizer;
+
+/**
+ * This is the default implementation of the dynamic class loader
+ * manager.
+ */
+public class DynamicClassLoaderManagerImpl
+ extends ServiceTracker
+ implements DynamicClassLoaderManager, ServiceTrackerCustomizer {
+
+ /** The package admin class loader. */
+ private final PackageAdminClassLoader pckAdminCL;
+
+ /** The dynamic class loader. */
+ private final ClassLoaderFacade facade;
+
+ /** The bundle context. */
+ private final BundleContext context;
+
+ private ClassLoader[] cache;
+
+ private boolean updateCache = false;
+
+ /**
+ * Create a new service instance
+ * @param ctx The bundle context.
+ * @param pckAdmin The package admin.
+ */
+ public DynamicClassLoaderManagerImpl(final BundleContext ctx,
+ final PackageAdmin pckAdmin) {
+ super(ctx, DynamicClassLoaderProvider.class.getName(), null);
+ this.context = ctx;
+ this.pckAdminCL = new PackageAdminClassLoader(pckAdmin, this.getClass().getClassLoader());
+ this.cache = new ClassLoader[] {this.pckAdminCL};
+ this.open();
+ this.facade = new ClassLoaderFacade(this);
+ }
+
+ public Object addingService(ServiceReference reference) {
+ this.updateCache = true;
+ return this.context.getService(reference);
+ }
+
+ public void modifiedService(ServiceReference reference, Object service) {
+ // as the ranking property has changed we have to update the cache
+ this.updateCache = true;
+ }
+
+ public void removedService(ServiceReference reference, Object service) {
+ this.context.ungetService(reference);
+ this.updateCache = true;
+ }
+
+ private synchronized void updateCache() {
+ if ( this.updateCache ) {
+ final ServiceReference[] refs = this.getServiceReferences();
+ final ClassLoader[] loaders = new ClassLoader[1 + refs.length];
+ Arrays.sort(refs, ServiceReferenceComparator.INSTANCE);
+ loaders[0] = this.pckAdminCL;
+ int index = 1;
+ for(final ServiceReference ref : refs) {
+ loaders[index] = (ClassLoader) this.getService(ref);
+ index++;
+ }
+ // and now use new array
+ this.cache = loaders;
+ this.updateCache = false;
+ }
+ }
+
+ /**
+ * Deactivate this service.
+ */
+ public void deactivate() {
+ this.close();
+ }
+
+
+ /**
+ * @see org.apache.sling.commons.classloader.DynamicClassLoaderManager#getDynamicClassLoader()
+ */
+ public ClassLoader getDynamicClassLoader() {
+ return this.facade;
+ }
+
+ /**
+ * This list contains the current list of class loaders. The first class loader
+ * is always the package admin class loader, therefore this list is never null
+ * and has always a size greater than zero.
+ * @return The list of class loaders.
+ */
+ public ClassLoader[] getDynamicClassLoaders() {
+ if ( this.updateCache ) {
+ updateCache();
+ }
+ return this.cache;
+ }
+
+ /**
+ * Comparator for service references.
+ */
+ protected static final class ServiceReferenceComparator implements Comparator<ServiceReference> {
+ public static ServiceReferenceComparator INSTANCE = new ServiceReferenceComparator();
+
+ public int compare(ServiceReference o1, ServiceReference o2) {
+ return o1.compareTo(o2);
+ }
+ }
+}
diff --git a/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java b/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java
new file mode 100644
index 0000000..9cd07a5
--- /dev/null
+++ b/src/main/java/org/apache/sling/commons/classloader/impl/PackageAdminClassLoader.java
@@ -0,0 +1,93 @@
+/*
+ * 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.sling.commons.classloader.impl;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.Enumeration;
+
+import org.osgi.framework.Bundle;
+import org.osgi.service.packageadmin.ExportedPackage;
+import org.osgi.service.packageadmin.PackageAdmin;
+
+/**
+ * The <code>PackageAdminClassLoader</code>
+ */
+class PackageAdminClassLoader extends ClassLoader {
+
+ private final PackageAdmin packageAdmin;
+
+ public PackageAdminClassLoader(final PackageAdmin pckAdmin, final ClassLoader parent) {
+ super(parent);
+ this.packageAdmin = pckAdmin;
+ }
+
+ private Bundle findBundleForClassOrResource(final String name) {
+ final int lastDot = name.lastIndexOf('.');
+ final String pckName = (lastDot == -1 ? "" : name.substring(0, lastDot));
+
+ final ExportedPackage exportedPackage = this.packageAdmin.getExportedPackage(pckName);
+ return (exportedPackage == null ? null : exportedPackage.getExportingBundle());
+ }
+
+ /**
+ * @see java.lang.ClassLoader#getResources(java.lang.String)
+ */
+ @SuppressWarnings("unchecked")
+ public Enumeration<URL> getResources(String name) throws IOException {
+ final Bundle bundle = this.findBundleForClassOrResource(name);
+ if ( bundle == null ) {
+ return super.getResources(name);
+ }
+ return bundle.getResources(name);
+ }
+
+ /**
+ * @see java.lang.ClassLoader#findResource(java.lang.String)
+ */
+ public URL findResource(String name) {
+ final Bundle bundle = this.findBundleForClassOrResource(name);
+ if ( bundle == null ) {
+ return super.findResource(name);
+ }
+ return bundle.getResource(name);
+ }
+
+ /**
+ * @see java.lang.ClassLoader#findClass(java.lang.String)
+ */
+ public Class<?> findClass(String name) throws ClassNotFoundException {
+ final Bundle bundle = this.findBundleForClassOrResource(name);
+ if ( bundle == null ) {
+ return super.findClass(name);
+ }
+ return bundle.loadClass(name);
+ }
+
+ /**
+ * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean)
+ */
+ protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
+ final Bundle bundle = this.findBundleForClassOrResource(name);
+ if ( bundle == null ) {
+ return super.loadClass(name, resolve);
+ }
+ return bundle.loadClass(name);
+ }
+}
diff --git a/src/main/resources/META-INF/LICENSE b/src/main/resources/META-INF/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/src/main/resources/META-INF/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
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+
+ "Legal Entity" shall mean the union of the acting entity and all
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+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
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+
+ Licensed 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
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diff --git a/src/main/resources/META-INF/NOTICE b/src/main/resources/META-INF/NOTICE
new file mode 100644
index 0000000..404f9a9
--- /dev/null
+++ b/src/main/resources/META-INF/NOTICE
@@ -0,0 +1,9 @@
+Apache Sling Commons Class Loader
+Copyright 2009 The Apache Software Foundation
+
+Apache Sling is based on source code originally developed
+by Day Software (http://www.day.com/).
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
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