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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 de.extrastandard.api.util;

/**
 * Instanzen, welche mehere Interface implementieren, welche nicht ale an der
 * Instanz sichtbar sind, bieten mit Hilfe dieses IF die Moeglichkeit, zu einen
 * dieser 'versteckten' Interfaces zu wechselen
 * 
 * @author zf4iks2
 * 
 */
public interface IImplementor {

	/**
	 * Prueft, ob cast in die gewuenschte Zielklasse moeglich ist.
	 * 
	 * Ist cls==null, so wird false geliefert.
	 * 
	 * @param 
	 * @param cls
	 *            Zielklasse/Zielinterface
	 * @return true g.d.w. die vorliegende Instance einen gesicherten cast nach
	 *         Class zulaesst
	 */
	 boolean isImplementationOf(Class cls);

	/**
	 * Fuehrt den cast nach Class
	 * 
	 * @param 
	 * @param cls
	 *            Zielklasse
	 * @return Objekt, welche das gewuenschte Klasse implementiert. Es wird kein
	 *         Zusammenhang zwischen Ausgangsobjekt und Resultat vorausgesetzt
	 *         (wie .z.B. sub/super, implements, instanceof etc)
	 * @throws ClassCastException
	 */
	 X cast(Class cls);
}