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/*
 * Copyright 2002,2003 The Apache Software Foundation
 *
 *  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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ext.test4j.cglib.proxy;

/**
 * All enhanced instances returned by the {@link Enhancer} class implement this
 * interface. Using this interface for new instances is faster than going
 * through the Enhancer interface or using reflection. In addition,
 * to intercept methods called during object construction you must use
 * these methods instead of reflection.
 * 
 * @author Juozas Baliuka [email protected]
 * @version $Id: Factory.java,v 1.13 2004/06/24 21:15:20 herbyderby Exp $
 */
@SuppressWarnings({ "rawtypes" })
public interface Factory {
	/**
	 * Creates new instance of the same type, using the no-arg constructor. The
	 * class of this object must have been created using a single Callback type.
	 * If multiple callbacks are required an exception will be thrown.
	 * 
	 * @param callback
	 *            the new interceptor to use
	 * @return new instance of the same type
	 */
	Object newInstance(Callback callback);

	/**
	 * Creates new instance of the same type, using the no-arg constructor.
	 * 
	 * @param callbacks
	 *            the new callbacks(s) to use
	 * @return new instance of the same type
	 */
	Object newInstance(Callback[] callbacks);

	/**
	 * Creates a new instance of the same type, using the constructor matching
	 * the given signature.
	 * 
	 * @param types
	 *            the constructor argument types
	 * @param args
	 *            the constructor arguments
	 * @param callbacks
	 *            the new interceptor(s) to use
	 * @return new instance of the same type
	 */
	Object newInstance(Class[] types, Object[] args, Callback[] callbacks);

	/**
	 * Return the Callback implementation at the specified index.
	 * 
	 * @param index
	 *            the callback index
	 * @return the callback implementation
	 */
	Callback getCallback(int index);

	/**
	 * Set the callback for this object for the given type.
	 * 
	 * @param index
	 *            the callback index to replace
	 * @param callback
	 *            the new callback
	 */
	void setCallback(int index, Callback callback);

	/**
	 * Replace all of the callbacks for this object at once.
	 * 
	 * @param callbacks
	 *            the new callbacks(s) to use
	 */
	void setCallbacks(Callback[] callbacks);

	/**
	 * Get the current set of callbacks for ths object.
	 * 
	 * @return a new array instance
	 */
	Callback[] getCallbacks();
}