/*
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.xml.ws.handler.soap;

import javax.xml.namespace.QName;
import javax.xml.ws.handler.Handler;
import java.util.Set;

/** The <code>SOAPHandler</code> class extends <code>Handler</code>
 *  to provide typesafety for the message context parameter and add a method
 *  to obtain access to the headers that may be processed by the handler.
 * 
 *  @since JAX-WS 2.0
**/
public interface SOAPHandler<T extends SOAPMessageContext>
    extends Handler<T> {

  /** Gets the header blocks that can be processed by this Handler
   *  instance.
   *
   *  @return Set of QNames of header blocks processed by this
   *           handler instance. <code>QName</code> is the qualified 
   *           name of the outermost element of the Header block.
  **/
  Set<QName> getHeaders();
}