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diff --git a/weaver/src/org/aspectj/weaver/loadtime/IWeavingContext.java b/weaver/src/org/aspectj/weaver/loadtime/IWeavingContext.java
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+++ b/weaver/src/org/aspectj/weaver/loadtime/IWeavingContext.java
@@ -0,0 +1,76 @@
+/*******************************************************************************
+ * Copyright (c) 2005 Contributors.
+ * 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://eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   David Knibb         initial implementation
+ *******************************************************************************/
+package org.aspectj.weaver.loadtime;
+
+import java.io.IOException;
+import java.net.URL;
+import java.util.Enumeration;
+
+/**
+ * This class adds support to AspectJ for an OSGi environment
+ * 
+ * @author David Knibb
+ */
+public interface IWeavingContext {
+	
+	/**
+	 * Allows the standard ClassLoader.getResources() mechanisms to be
+	 * replaced with a different implementation.
+	 * In an OSGi environment, this will allow for filtering to take 
+	 * place on the results of ClassLoader.getResources(). In a non-OSGi
+	 * environment, ClassLoader.getResources should be returned.
+	 * @param name the name of the resource to search for
+	 * @return an enumeration containing all of the matching resources found
+	 * @throws IOException
+	 */
+	public Enumeration getResources(String name) throws IOException;
+	
+	/**
+	 * In an OSGi environment, determin which bundle a URL originated from.
+	 * In a non-OSGi environment, implementors should return <code>null<code>.
+	 * @param url
+	 * @return
+	 * @deprecated use getFile() or getClassLoaderName()
+	 */
+	public String getBundleIdFromURL(URL url);
+	
+	/**
+	 * In an environment with multiple class loaders allows each to be
+	 * identified using something safer and possibly shorter than toString
+	 * @return name of the associated class loader
+	 */
+	public String getClassLoaderName ();
+
+	/**
+	 * Format a URL
+	 * @return filename
+	 */
+	public String getFile(URL url);
+	
+	/**
+	 * In an environment with multiple class loaders allows messages
+	 * to identified according to the weaving context
+	 * @return short name 
+	 */
+	public String getId ();
+	
+	/**
+	 * Return true if the classloader associated with this weaving context
+	 * is the one that will define the class with the specified name.
+	 * In a delegating classloader hierarchy this might check the parent won't
+	 * define it and the child will - in OSGi it will do something else.
+	 * @param classname name of the class, eg. "java.lang.String"
+	 * @return true if the associated classloader will define the class
+	 */
+	public boolean isLocallyDefined(String classname);
+
+}