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  * Copyright (c) OSGi Alliance (2010). All Rights Reserved.
  * Licensed 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.osgi.framework.hooks.weaving;

OSGi Framework Weaving Hook Service.

Bundles registering this service will be called during framework class loading operations. Weaving hook services are called when a class is being loaded by the framework and have an opportunity to transform the class file bytes that represents the class being loaded. Weaving hooks may also ask the framework to wire in additional dynamic imports to the bundle.

When a class is being loaded, the framework will create a WovenClass object for the class and pass it to each registered weaving hook service for possible modification. The first weaving hook called will see the original class file bytes. Subsequently called weaving hooks will see the class file bytes as modified by previously called weaving hooks.

$Id: d1985029024baba2db1c56aab1e06ee953fd6365 $
public interface WeavingHook {
Weaving hook method. This method can modify the specified woven class object to weave the class being defined.

If this method throws any exception, the framework must log the exception and fail the class load in progress. This weaving hook service must be blacklisted by the framework and must not be called again. The blacklisting of this weaving hook service must expire when this weaving hook service is unregistered. However, this method can throw a WeavingException to deliberately fail the class load in progress without being blacklisted by the framework.

wovenClass The WovenClass object that represents the data that will be used to define the class.
WeavingException If this weaving hook wants to deliberately fail the class load in progress without being blacklisted by the framework
	public void weave(WovenClass wovenClass);
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