| /******************************************************************************* |
| * Copyright (c) 2006, 2008, 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * David Knibb initial implementation |
| * Matthew Webster Eclipse 3.2 changes |
| * Martin Lippert caching optimizations |
| * Martin Lippert caching of generated classes |
| *******************************************************************************/ |
| |
| package org.eclipse.equinox.weaving.hooks; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| |
| import org.eclipse.equinox.service.weaving.CacheEntry; |
| import org.eclipse.equinox.weaving.adaptors.Debug; |
| import org.eclipse.equinox.weaving.adaptors.IWeavingAdaptor; |
| import org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry; |
| import org.eclipse.osgi.baseadaptor.bundlefile.BundleFile; |
| |
| /** |
| * This is a wrapper for bundle files that allows the weaving runtime to create |
| * wrapped instances of bundle entry objects. |
| * |
| * Those bundle entry objects are used to return class bytes from the cache |
| * instead of the bundle itself. |
| */ |
| public class WeavingBundleFile extends AbstractWeavingBundleFile { |
| |
| private final URL url; |
| |
| /** |
| * Create a new wrapper for a bundle file |
| * |
| * @param adaptorProvider A provider that allows this wrapper to gain access |
| * to the adaptor of this bundle |
| * @param bundleFile The wrapped bundle file |
| * @throws IOException |
| */ |
| public WeavingBundleFile(final BundleAdaptorProvider adaptorProvider, |
| final BundleFile bundleFile) throws IOException { |
| super(adaptorProvider, bundleFile); |
| this.url = delegate.getBaseFile().toURL(); |
| } |
| |
| @Override |
| public BundleEntry getEntry(final String path) { |
| if (Debug.DEBUG_BUNDLE) |
| Debug.println("> AspectJBundleFile.getEntry() path=" + path |
| + ", url=" + url); |
| BundleEntry entry = delegate.getEntry(path); |
| |
| if (path.endsWith(".class") && entry != null) { |
| final int offset = path.lastIndexOf('.'); |
| final String name = path.substring(0, offset).replace('/', '.'); |
| final IWeavingAdaptor adaptor = getAdaptor(); |
| if (adaptor != null) { |
| final CacheEntry cacheEntry = adaptor.findClass(name, url); |
| if (cacheEntry == null) { |
| entry = new WeavingBundleEntry(adaptor, entry, url, false); |
| if (Debug.DEBUG_BUNDLE) |
| Debug.println("- AspectJBundleFile.getEntry() path=" |
| + path + ", entry=" + entry); |
| } else if (cacheEntry.getCachedBytes() != null) { |
| entry = new CachedClassBundleEntry(adaptor, entry, path, |
| cacheEntry.getCachedBytes(), url); |
| } else { |
| entry = new WeavingBundleEntry(adaptor, entry, url, |
| cacheEntry.dontWeave()); |
| } |
| } |
| } else if (path.endsWith(".class") && entry == null) { |
| final int offset = path.lastIndexOf('.'); |
| final String name = path.substring(0, offset).replace('/', '.'); |
| final IWeavingAdaptor adaptor = getAdaptor(); |
| if (adaptor != null) { |
| final CacheEntry cacheEntry = adaptor.findClass(name, url); |
| if (cacheEntry != null && cacheEntry.getCachedBytes() != null) { |
| entry = new CachedGeneratedClassBundleEntry(adaptor, path, |
| cacheEntry.getCachedBytes(), url); |
| } |
| } |
| } |
| |
| if (Debug.DEBUG_BUNDLE) |
| Debug.println("< AspectJBundleFile.getEntry() entry=" + entry); |
| return entry; |
| } |
| |
| } |