01: /*
02: * $Id: NullComponent.java 10529 2008-01-25 05:58:36Z dfeist $
03: * --------------------------------------------------------------------------------------
04: * Copyright (c) MuleSource, Inc. All rights reserved. http://www.mulesource.com
05: *
06: * The software in this package is published under the terms of the CPAL v1.0
07: * license, a copy of which has been included with this distribution in the
08: * LICENSE.txt file.
09: */
10:
11: package org.mule.component.simple;
12:
13: import org.mule.api.MuleEventContext;
14: import org.mule.api.lifecycle.Callable;
15:
16: /**
17: * <code>NullComponent</code> is a service that is used as a placeholder. This
18: * implementation will throw an exception if a message is received for it.
19: */
20: public class NullComponent implements Callable {
21:
22: public Object onCall(MuleEventContext context) throws Exception {
23: throw new UnsupportedOperationException(
24: "This service cannot receive messages. Service is: "
25: + context.getService().getName());
26: }
27:
28: }
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