Package org.apache.axis

Interface Handler

All Superinterfaces:
Serializable
All Known Subinterfaces:
Chain, TargetedChain
All Known Implementing Classes:
AxisClient, AxisEngine, AxisServer, BasicHandler, BasicProvider, BSFProvider, CommonsHTTPSender, ComProvider, CORBAProvider, DebugHandler, EchoHandler, EJBProvider, ErrorHandler, FaultableHandler, HTTPActionHandler, HTTPAuthHandler, HTTPSender, JavaProvider, JavaSender, JAXRPCHandler, JMSSender, JWSHandler, LocalResponder, LocalSender, LogHandler, LogMessage, MailSender, MD5AttachHandler, MsgProvider, MustUnderstandChecker, RMIProvider, RPCProvider, SimpleAuthenticationHandler, SimpleAuthorizationHandler, SimpleChain, SimpleSessionHandler, SimpleTargetedChain, SOAPMonitorHandler, SOAPService, Transport, URLMapper
public interface Handler extends Serializable
An AXIS handler.
Author:
Doug Davis (dug@us.ibm.com)

  • Method Details

    • init

      void init()
      Init is called when the chain containing this Handler object is instantiated.

    • cleanup

      void cleanup()
      Cleanup is called when the chain containing this Handler object is done processing the chain.

    • invoke

      void invoke(MessageContext msgContext) throws AxisFault
      Invoke is called to do the actual work of the Handler object. If there is a fault during the processing of this method it is invoke's job to catch the exception and undo any partial work that has been completed. Once we leave 'invoke' if a fault is thrown, this classes 'onFault' method will be called. Invoke should rethrow any exceptions it catches, wrapped in an AxisFault.
      Parameters:
      msgContext - the MessageContext to process with this Handler.
      Throws:
      AxisFault - if the handler encounters an error

    • onFault

      void onFault(MessageContext msgContext)
      Called when a subsequent handler throws a fault.
      Parameters:
      msgContext - the MessageContext to process the fault to

    • canHandleBlock

      boolean canHandleBlock(QName qname)
      Indicate if this handler can process qname.
      Parameters:
      qname - the QName to check
      Returns:
      true if this Handler can handle qname, false otherwise

    • getUnderstoodHeaders

      List getUnderstoodHeaders()
      Return a list of QNames which this Handler understands. By returning a particular QName here, we are committing to fulfilling any contracts defined in the specification of the SOAP header with that QName.
      Returns:
      a List of QName instances

    • setOption

      void setOption(String name, Object value)
      Add the given option (name/value) to this handler's bag of options.
      Parameters:
      name - the name of the option
      value - the new value of the option

    • getOption

      Object getOption(String name)
      Returns the option corresponding to the 'name' given.
      Parameters:
      name - the name of the option
      Returns:
      the value of the option

    • setName

      void setName(String name)
      Set the name (i.e. registry key) of this Handler.
      Parameters:
      name - the new name

    • getName

      String getName()
      Return the name (i.e. registry key) for this Handler.
      Returns:
      the name for this Handler

    • getOptions

      Hashtable getOptions()
      Return the entire list of options.
      Returns:
      a Hashset containing all name/value pairs

    • setOptions

      void setOptions(Hashtable opts)
      Sets a whole list of options.
      Parameters:
      opts - a Hashtable of name-value pairs to use

    • getDeploymentData

      Element getDeploymentData(Document doc)
      This will return the root element of an XML doc that describes the deployment information about this handler. This is NOT the WSDL, this is all of the static internal data use by Axis - WSDL takes into account run-time information (like which service we're talking about) this is just the data that's stored in the registry. Used by the 'list' Admin function.
      Parameters:
      doc - a Document within which to build the deployment data
      Returns:
      an Element representing the deployment data

    • generateWSDL

      void generateWSDL(MessageContext msgContext) throws AxisFault
      Obtain WSDL information. Some Handlers will implement this by merely setting properties in the MessageContext, others (providers) will take responsibility for doing the "real work" of generating WSDL for a given service.
      Parameters:
      msgContext - the MessageContext to generate the WSDL to
      Throws:
      AxisFault - if there was a problem generating the WSDL