| /******************************************************************************* |
| * Copyright (c) 2006 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.osgi.baseadaptor.hooks; |
| |
| import java.net.URL; |
| import org.eclipse.osgi.baseadaptor.HookRegistry; |
| import org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry; |
| import org.eclipse.osgi.baseadaptor.loader.ClasspathEntry; |
| import org.eclipse.osgi.baseadaptor.loader.ClasspathManager; |
| |
| /** |
| * A ClassLoadingStatsHook hooks into the <code>ClasspathManager</code> class. This class allows |
| * a hook to record statistics about classloading. |
| * @see ClasspathManager |
| * @see HookRegistry#getClassLoadingStatsHooks() |
| * @see HookRegistry#addClassLoadingStatsHook(ClassLoadingStatsHook) |
| * @since 3.2 |
| */ |
| public interface ClassLoadingStatsHook { |
| /** |
| * Gets called by a classpath manager during {@link ClasspathManager#findLocalClass(String)} before |
| * searching the local classloader for a class. A classpath manager will call this method for |
| * each configured class loading stat hook. |
| * @param name the name of the requested class |
| * @param manager the classpath manager used to find and load the requested class |
| * @throws ClassNotFoundException to prevent the requested class from loading |
| */ |
| void preFindLocalClass(String name, ClasspathManager manager) throws ClassNotFoundException; |
| |
| /** |
| * Gets called by a classpath manager during {@link ClasspathManager#findLocalClass(String)} after |
| * searching the local classloader for a class. A classpath manager will call this method for |
| * each configured class loading stat hook. |
| * @param name the name of the requested class |
| * @param clazz the loaded class or null if not found |
| * @param manager the classpath manager used to find and load the requested class |
| */ |
| void postFindLocalClass(String name, Class clazz, ClasspathManager manager) throws ClassNotFoundException; |
| |
| /** |
| * Gets called by a classpath manager during {@link ClasspathManager#findLocalResource(String)} before |
| * searching the local classloader for a resource. A classpath manager will call this method for |
| * each configured class loading stat hook. |
| * @param name the name of the requested resource |
| * @param manager the classpath manager used to find the requested resource |
| */ |
| void preFindLocalResource(String name, ClasspathManager manager); |
| |
| /** |
| * Gets called by a classpath manager during {@link ClasspathManager#findLocalResource(String)} after |
| * searching the local classloader for a resource. A classpath manager will call this method for |
| * each configured class loading stat hook. |
| * @param name the name of the requested resource |
| * @param resource the URL to the requested resource or null if not found |
| * @param manager the classpath manager used to find the requested resource |
| */ |
| void postFindLocalResource(String name, URL resource, ClasspathManager manager); |
| |
| /** |
| * Gets called by a classpath manager after a successfully defining a class. This method allows |
| * a class loading stat hook to record data about a class definition. |
| * @param name the name of the class that got defined |
| * @param clazz the class object that got defined |
| * @param classbytes the class bytes used to define the class |
| * @param classpathEntry the ClasspathEntry where the class bytes got read from |
| * @param entry the BundleEntyr source of the class bytes |
| * @param manager the classpath manager used to define the class |
| */ |
| void recordClassDefine(String name, Class clazz, byte[] classbytes, ClasspathEntry classpathEntry, BundleEntry entry, ClasspathManager manager); |
| |
| } |