Invocation


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3    *  JBoss Portal: The OpenSource Portal  *
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5    *   Distributable under LGPL license.   *
6    *   See terms of license at gnu.org.    *
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9   package org.jboss.portal.server.invocation;
10  
11  /**
12   * An invocation that works on an interceptor stack.
13   *
14   * @author <a HREF="mailto:julien@jboss.org">Julien Viet</a>
15   * @version $Revision: 1.1.1.1 $
16   */
17  public interface Invocation
18  {
19  
20     /**
21      * Attach an object. 
22      */
23     void setAttachment(AttachmentKey key, Object   value);
24  
25     /**
26      * Get an object attached.
27      */
28     Object   getAttachment(AttachmentKey key);
29  
30     /**
31      * Remove an attached object.
32      */
33     void removeAttachment(AttachmentKey key);
34  
35     /**
36      * Route the invocation to the next interceptor.
37      */
38     Object   invokeNext();
39  
40     /**
41      * Route the invocation to use a new stack.
42      *
43      * @throws IllegalArgumentException if the interceptor stack is null
44      */
45     Object   invokeNext(Interceptor[] newInterceptors) throws IllegalArgumentException  ;
46  }
47

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