content: /*
   * Copyright (c) OSGi Alliance (2008, 2009). 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
   *
   *      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 org.osgi.service.blueprint.container;
  
  /**
   * A Blueprint exception indicating that a component does not exist in a
   * Blueprint Container.
   * 
   * This exception is thrown when an attempt is made to create a component
   * instance or lookup Component Metadata using a component id that does not
   * exist in the Blueprint Container.
   * 
   * @version $Revision$
   */
  public class NoSuchComponentException extends RuntimeException {
  	private static final long	serialVersionUID	= 1L;
  	/**
  	 * The requested component id that generated the exception.
  	 */
  	private final String		componentId;
  
  	/**
  	 * Create a No Such Component Exception for a non-existent component.
  	 * 
  	 * @param msg The associated message.
  	 * @param id The id of the non-existent component.
  	 */
  	public NoSuchComponentException(String msg, String id) {
  		super(msg);
  		this.componentId = id;
  	}
  
  	/**
  	 * Create a No Such Component Exception for a non-existent component.
  	 * 
  	 * @param id The id of the non-existent component.
  	 */
  	public NoSuchComponentException(String id) {
  		super("No component with id '" + (id == null ? "<null>" : id)
  				+ "' could be found");
  		this.componentId = id;
  	}
  
  	/**
  	 * Returns the id of the non-existent component.
  	 * 
  	 * @return The id of the non-existent component.
  	 */
  	public String getComponentId() {
  		return componentId;
  	}
  }
  