1 files changed, 95 insertions, 0 deletions
diff --git a/bundles/org.eclipse.equinox.weaving.hook/src/org/eclipse/equinox/weaving/hooks/WeavingBundleFile.java b/bundles/org.eclipse.equinox.weaving.hook/src/org/eclipse/equinox/weaving/hooks/WeavingBundleFile.java
new file mode 100644
index 000000000..fe5f47fbc
--- /dev/null
+++ b/bundles/org.eclipse.equinox.weaving.hook/src/org/eclipse/equinox/weaving/hooks/WeavingBundleFile.java
@@ -0,0 +1,95 @@
+/*******************************************************************************
+ * 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;
+    }
+
+}