diff options
author | slaws <slaws@13f79535-47bb-0310-9956-ffa450edef68> | 2009-04-21 06:45:30 +0000 |
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committer | slaws <slaws@13f79535-47bb-0310-9956-ffa450edef68> | 2009-04-21 06:45:30 +0000 |
commit | 990291a3ec7af02e4b28846dd0eea9bd5a031945 (patch) | |
tree | 465b58fb282caa2d13a38c5b60548b7dc0b906d3 /branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java | |
parent | 10ccafbe890ad4d54e95bbeaf67020e10d6be422 (diff) |
TUSCANY-2972 instigate contribution type specific class loading to allow the JEE classloader to be used independently of jar, zip, dir classloading schemes
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@767015 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java')
-rw-r--r-- | branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java | 330 |
1 files changed, 0 insertions, 330 deletions
diff --git a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java b/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java deleted file mode 100644 index bc009c50d7..0000000000 --- a/branches/sca-java-1.x/modules/contribution-jee-impl/src/main/java/org/apache/tuscany/sca/contribution/jee/impl/JEEClassLoader.java +++ /dev/null @@ -1,330 +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.contribution.jee.impl; - -import java.io.IOException; -import java.net.MalformedURLException; -import java.net.URL; -import java.net.URLClassLoader; -import java.security.AccessController; -import java.security.PrivilegedAction; -import java.util.ArrayList; -import java.util.Collection; -import java.util.Collections; -import java.util.Enumeration; -import java.util.HashSet; -import java.util.List; - -import org.apache.tuscany.sca.contribution.Artifact; -import org.apache.tuscany.sca.contribution.Contribution; -import org.apache.tuscany.sca.contribution.Export; -import org.apache.tuscany.sca.contribution.Import; -import org.apache.tuscany.sca.contribution.java.JavaImport; -import org.apache.tuscany.sca.contribution.jee.EjbModuleInfo; -import org.apache.tuscany.sca.contribution.jee.JavaEEApplicationInfo; -import org.apache.tuscany.sca.contribution.jee.WebModuleInfo; - - -public class JEEClassLoader extends URLClassLoader { - - private Contribution contribution; - private List<WebModuleInfo> webModules = new ArrayList<WebModuleInfo>(); - private List<EjbModuleInfo> ejbModules = new ArrayList<EjbModuleInfo>(); - - /** - * Constructor for contribution ClassLoader - * - * @param contribution - * @param parent - * @throws MalformedURLException - */ - public JEEClassLoader(Contribution contribution, final ClassLoader parent) { - super(new URL[0], parent); - - this.contribution = contribution; - - // get the classloaders for any JEE archives references by the contribution - // TODO extend to case where JEE archive is outside the contribution - for (Artifact artifact : contribution.getArtifacts()){ - if (artifact.getModel() instanceof WebModuleInfo){ - WebModuleInfo webModuleInfo = (WebModuleInfo)artifact.getModel(); - webModules.add(webModuleInfo); - } else if (artifact.getModel() instanceof EjbModuleInfo){ - EjbModuleInfo ejbModuleInfo = (EjbModuleInfo)artifact.getModel(); - ejbModules.add(ejbModuleInfo); - } else if (artifact.getModel() instanceof JavaEEApplicationInfo){ - JavaEEApplicationInfo jeeAppInfo = (JavaEEApplicationInfo)artifact.getModel(); - webModules.addAll(jeeAppInfo.getWebModuleInfos().values()); - ejbModules.addAll(jeeAppInfo.getEjbModuleInfos().values()); - } - } - - } - - /* (non-Javadoc) - * @see java.net.URLClassLoader#findClass(java.lang.String) - * - * Search path for class: - * This contribution - * Imported contributions - */ - @Override - protected Class<?> findClass(String className) throws ClassNotFoundException { - - Class<?> clazz = null; - ClassNotFoundException cne = null; - - // ask each of the JEE archive classloaders in turn - // TODO This is a bad thing as two archives may have the same class - // but don't know how to avoid this - for (WebModuleInfo webModuleInfo : webModules){ - try { - clazz = webModuleInfo.getModuleClassloader().loadClass(className); - } catch (ClassNotFoundException e) { - cne = e; - } - - if (clazz != null){ - break; - } - } - - // We would expect the webapp classloaders to have an ejb classloader as parent - // but we have to go through the ebj module classloaders here just in case - // there are no webapps - for (EjbModuleInfo ejbModuleInfo : ejbModules){ - try { - clazz = ejbModuleInfo.getModuleClassloader().loadClass(className); - } catch (ClassNotFoundException e) { - cne = e; - } - - if (clazz != null){ - break; - } - } - - if (clazz == null){ - throw cne; - } - - return clazz; - } - - - /* (non-Javadoc) - * @see java.lang.ClassLoader#loadClass(java.lang.String, boolean) - * - * Search path for class: - * Parent ClassLoader - * This contribution - * Imported contributions - * - */ - @Override - protected synchronized Class<?> loadClass(String className, boolean resolveClass) - throws ClassNotFoundException { - - Class<?> clazz = null; - try { - - if (this.getParent() != null) - clazz = this.getParent().loadClass(className); - - } catch (ClassNotFoundException e) { - } - - if (clazz == null) - clazz = findClass(className); - - - if (resolveClass) - this.resolveClass(clazz); - return clazz; - - } - - - - /* - * (non-Javadoc) - * - * @see java.net.URLClassLoader#findResource(java.lang.String) - */ - @Override - public URL findResource(String name) { - - URL url = null; -/* - URL url = findResourceFromContribution(name); - - if (url == null) { - for (Import import_ : this.contribution.getImports()) { - if (resourceNameMatchesImport(name, import_)) { - // Delegate the resolution to the imported contribution - for (Contribution exportingContribution : ((JavaImportModelResolver)import_.getModelResolver()).getExportContributions()) { - - ClassLoader exportClassLoader = getExportClassLoader(exportingContribution); - if (exportClassLoader instanceof JEEClassLoader) { - - for (Export export : exportingContribution.getExports()) { - if (import_.match(export)) { - url = ((JEEClassLoader)exportClassLoader).findResourceFromContribution(name); - if (url != null) break; - } - } - if (url != null) break; - } - } - if (url != null) break; - } - } - - } -*/ - return url; - } - - - /* (non-Javadoc) - * @see java.net.URLClassLoader#findResources(java.lang.String) - */ - @Override - public Enumeration<URL> findResources(String name) throws IOException { - return Collections.enumeration(findResourceSet(name)); - } - - /* (non-Javadoc) - * @see java.lang.ClassLoader#getResource(java.lang.String) - * - * Find a resource. - * Search path for resource: - * Parent ClassLoader - * This contribution - * Imported contributions - */ - @Override - public URL getResource(String resName) { - - URL resource = null; - - if (this.getParent() != null) { - resource = this.getParent().getResource(resName); - } - if (resource == null) - resource = findResource(resName); - - return resource; - } - - - - /* (non-Javadoc) - * @see java.lang.ClassLoader#getResources(java.lang.String) - * - * Return list of resources from this contribution, resources - * imported through imported contributions and resources from parent - * ClassLoader. - */ - @Override - public Enumeration<URL> getResources(String resName) throws IOException { - - HashSet<URL> resourceSet = findResourceSet(resName); - addEnumerationToCollection(resourceSet, super.getResources(resName)); - - return Collections.enumeration(resourceSet); - } - - - /* - * Find set of resources - */ - private HashSet<URL> findResourceSet(String name) throws IOException { - - HashSet<URL> resources = new HashSet<URL>(); - -/* - addEnumerationToCollection(resources, super.findResources(name)); - - for (Import import_ : this.contribution.getImports()) { - if (!(import_ instanceof JavaImport)) { - continue; - } - if (resourceNameMatchesImport(name, import_)) { - // Delegate the resolution to the imported contribution - for (Contribution exportingContribution : ((JavaImportModelResolver)import_.getModelResolver()).getExportContributions()) { - - ClassLoader exportClassLoader = getExportClassLoader(exportingContribution); - if (exportClassLoader instanceof JEEClassLoader) { - - for (Export export : exportingContribution.getExports()) { - if (import_.match(export)) { - addEnumerationToCollection(resources, - ((JEEClassLoader)exportClassLoader).findResources(name)); - } - } - } - } - } - } -*/ - - return resources; - } - - - /* - * Find class from contribution. If class has already been loaded, return loaded class. - */ - private Class<?> findClassFromContribution(String className) throws ClassNotFoundException { - - Class<?> clazz = findLoadedClass(className); - if (clazz == null) - clazz = super.findClass(className); - return clazz; - - } - - /* - * Find resource from contribution. - */ - private URL findResourceFromContribution(String name) { - - return super.findResource(name); - } - - - /* - * Add an enumeration to a Collection - */ - private <T extends Object> void addEnumerationToCollection(Collection<T> collection, Enumeration<T> enumeration) { - - while (enumeration.hasMoreElements()) - collection.add(enumeration.nextElement()); - } - - - @Override - public String toString() { - return "SCA JEE ClassLoader, parent ClassLoader: " + getParent(); - } - - -} |