| /** |
| * 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.openejb.config; |
| |
| import org.apache.openejb.ClassLoaderUtil; |
| import org.apache.openejb.core.EmptyResourcesClassLoader; |
| import org.apache.openejb.loader.SystemInstance; |
| import org.apache.xbean.finder.archive.Archive; |
| import org.apache.xbean.finder.archive.ClassesArchive; |
| import org.apache.xbean.finder.archive.ClasspathArchive; |
| import org.apache.xbean.finder.archive.CompositeArchive; |
| import org.apache.xbean.finder.archive.FilteredArchive; |
| import org.apache.xbean.finder.filter.Filter; |
| import org.apache.xbean.finder.filter.FilterList; |
| import org.apache.xbean.finder.filter.PackageFilter; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class ConfigurableClasspathArchive extends CompositeArchive implements ScanConstants { |
| public ConfigurableClasspathArchive(final Module module, final URL... urls) { |
| this(module, Arrays.asList(urls)); |
| } |
| |
| public ConfigurableClasspathArchive(final Module module, final Iterable<URL> urls) { |
| this(module, false, urls); |
| } |
| |
| public ConfigurableClasspathArchive(final ClassLoader loader, final Iterable<URL> urls) { |
| this(loader, false, urls); |
| } |
| |
| public ConfigurableClasspathArchive(final ClassLoader loader, boolean forceDescriptor, final Iterable<URL> urls) { |
| this(new FakeModule(loader), forceDescriptor, urls); |
| } |
| |
| public ConfigurableClasspathArchive(final ClassLoader loader, final URL url) { |
| this(new FakeModule(loader), Arrays.asList(url)); |
| } |
| |
| public ConfigurableClasspathArchive(final Module module, boolean forceDescriptor, final Iterable<URL> urls) { |
| super(archive(module, urls, forceDescriptor)); |
| } |
| |
| public static List<Archive> archive(final Module module, final Iterable<URL> urls, boolean forceDescriptor) { |
| final List<Archive> archives = new ArrayList<Archive>(); |
| for (URL location : urls) { |
| try { |
| archives.add(archive(module, location, forceDescriptor)); |
| } catch (Exception e) { |
| // ignored |
| } |
| } |
| return archives; |
| } |
| |
| public static Archive archive(final Module module, final URL location, boolean forceDescriptor) { |
| final ClassLoader loader = module.getClassLoader(); |
| final String name = "META-INF/" + name(); |
| try { |
| URLClassLoader tmpLoader = new URLClassLoader(new URL[] { location }, new EmptyResourcesClassLoader()); |
| URL scanXml = tmpLoader.getResource(name); |
| ClassLoaderUtil.destroyClassLoader(tmpLoader); |
| if (scanXml == null && !forceDescriptor) { |
| return ClasspathArchive.archive(loader, location); |
| } else if (scanXml == null) { |
| return new ClassesArchive(); |
| } |
| |
| // read descriptors |
| ScanUtil.ScanHandler scan; |
| if (scanXml != null) { |
| scan = ScanUtil.read(scanXml); |
| } else { |
| scan = new ScanUtil.ScanHandler(); |
| } |
| |
| final Archive packageArchive = packageArchive(scan.getPackages(), loader, location); |
| final Archive classesArchive = classesArchive(scan.getPackages(), scan.getClasses(), loader); |
| |
| if (packageArchive != null && classesArchive != null) { |
| return new CompositeArchive(classesArchive, packageArchive); |
| } else if (packageArchive != null) { |
| return packageArchive; |
| } |
| return classesArchive; |
| } catch (IOException e) { |
| if (forceDescriptor) { |
| return new ClassesArchive(); |
| } |
| return ClasspathArchive.archive(loader, location); |
| } |
| } |
| |
| private static String name() { |
| return SystemInstance.get().getProperty(SCAN_XML_PROPERTY, SCAN_XML_NAME); |
| } |
| |
| public static Archive packageArchive(final Set<String> packageNames, final ClassLoader loader, final URL url) { |
| if (!packageNames.isEmpty()) { |
| return new FilteredArchive(ClasspathArchive.archive(loader, url), filters(packageNames)); |
| } |
| return null; |
| } |
| |
| private static Filter filters(final Set<String> packageNames) { |
| final List<Filter> filters = new ArrayList<Filter>(); |
| for (String packageName : packageNames) { |
| filters.add(new PackageFilter(packageName)); |
| } |
| return new FilterList(filters); |
| } |
| |
| public static Archive classesArchive(final Set<String> packages, final Set<String> classnames, final ClassLoader loader) { |
| Class<?>[] classes = new Class<?>[classnames.size()]; |
| int i = 0; |
| for (String clazz : classnames) { |
| // skip classes managed by package filtering |
| if (packages != null && clazzInPackage(packages, clazz)) { |
| continue; |
| } |
| |
| try { |
| classes[i++] = loader.loadClass(clazz); |
| } catch (ClassNotFoundException e) { |
| // ignored |
| } |
| } |
| |
| if (i != classes.length) { // shouldn't occur |
| final Class<?>[] updatedClasses = new Class<?>[i]; |
| System.arraycopy(classes, 0, updatedClasses, 0, i); |
| classes = updatedClasses; |
| } |
| |
| return new ClassesArchive(classes); |
| } |
| |
| private static boolean clazzInPackage(final Collection<String> packagename, final String clazz) { |
| for (String str : packagename) { |
| if (clazz.startsWith(str)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static class FakeModule extends Module { |
| public FakeModule(final ClassLoader loader) { |
| this(loader, null); |
| } |
| |
| public FakeModule(final ClassLoader loader, final Map<String, Object> altDD) { |
| this(loader, altDD, name()); |
| } |
| |
| public FakeModule(final ClassLoader loader, final Map<String, Object> altDD, final String name) { |
| super(false); |
| setClassLoader(loader); |
| |
| final URL scanXml; |
| if (altDD == null) { |
| scanXml = loader.getResource("META-INF/" + name); |
| } else { |
| scanXml = (URL) altDD.get(name); |
| } |
| if (scanXml != null) { |
| getAltDDs().put(SCAN_XML_NAME, scanXml); |
| } |
| } |
| } |
| } |