org.deegree_impl.services.wcas
Class WCASService_Impl

java.lang.Object
  org.deegree_impl.services.OGCWebService_Impl
      org.deegree_impl.services.wcas.WCASService_Impl

All Implemented Interfaces:

java.util.EventListener, Handler, OGCWebService

public class WCASService_Impl

extends OGCWebService_Impl

implements Handler

A WCAS implementns the WCASService interface to act like a OGC web service. This means that a WCAS is callable through the doService-method defined at OGCWebService.

Because the WCASService_Impl acts as proxy he also implements the OGCWebServiceClient interface to receive the response(s) from the WFS's he had called. So the WCAS is nothing else than a client to a WFS.

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Version:

$Revision: 1.27 $ $Date: 2004/03/16 08:07:25 $

Author:

Andreas Poth

Field Summary

private WCASCapabilities	capa
private OGCWebServiceClient	dest
private Handler	dispatcher
private int	expectedResponses
private OGCWebServiceRequest	inRequest
private int	reqType
private OGCWebServiceRequest[]	requests
private java.util.ArrayList	results

Fields inherited from class org.deegree_impl.services.OGCWebService_Impl

capabilities

Constructor Summary

WCASService_Impl(WCASCapabilities capa)
constructor

Method Summary

void	doService(OGCWebServiceEvent event) implements the doService method inherited from the OGCWebService interface.
OGCWebServiceResponse	doService(OGCWebServiceRequest request) the method performs the handling of the passed OGCWebServiceEvent directly and returns the result to the calling class/method
private void	handleDescribeRecordTypeResponse() handles the creation and send of a describeRecordType response back to the client
private void	handleGetCapabilities(CASGetCapabilitiesRequest request) handles a get capabilities request by reading the capabilities document from its source.
private void	handleGetCapabilitiesResponse() handles the response to a GetCapabilities request
private void	handleGetRecordResponse() handles the creation and send of a getRecord response back to the client
private void	handleRegisterServiceResponse() handles the creation and send of a registerService response back to the client
void	handleRequest(OGCWebServiceEvent event) handles a request against an OGC web service
void	handleResponse(OGCWebServiceEvent event) handles the response of an OGC web service
private void	handleTransactionResponse() handles the creation and send of a transaction response back to the client
boolean	isInterested(OGCWebServiceEvent event) returns true if the handler is interested in a event
private void	performCascadeGetRecord(CASGetRecordRequest request) performs getRecord requests against all known federated catalogs.
void	registerHandler(Handler handler) registers a Handler so this Handler is able to act as a proxy to the registered handler
void	removeHandler(Handler handler) removes a registered handler from the service
private OGCWebServiceEvent[]	transformDescribeRecordType(CASDescribeRecordTypeRequest request) transforms a describeRecordType request to one describeFeatureType request and encapsulates it into one OGCWebServiceEvent
private OGCWebServiceEvent[]	transformGetRecord(CASGetRecordRequest request) transforms a getRecord request to one or more getFeature requests and encapsulates them into one or more OGCWebServiceEvents
private OGCWebServiceEvent[]	transformRegisterService(CASRegisterServiceRequest request) performs a registerService request. this will be done by requesting the service describing XML document from the specified address and transforming it into one or more (WFS) transaction requests encapsulated into one or more OGCWebServiceEvents.
private OGCWebServiceEvent[]	transformToWFSRequest(OGCWebServiceRequest request) transforms a CASRequest to one or more WFS requests
private OGCWebServiceEvent[]	transformTransaction(CASTransactionRequest request) transforms a (WCAS) transaction request to one (WFS) transaction request and encapsulates it into one OGCWebServiceEvent

Methods inherited from class org.deegree_impl.services.OGCWebService_Impl

getCapabilities

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

results

private java.util.ArrayList results

dispatcher

private Handler dispatcher

dest

private OGCWebServiceClient dest

inRequest

private OGCWebServiceRequest inRequest

capa

private WCASCapabilities capa

requests

private OGCWebServiceRequest[] requests

expectedResponses

private int expectedResponses

reqType

private int reqType

Constructor Detail

WCASService_Impl

public WCASService_Impl(WCASCapabilities capa)

constructor

Parameters:

capa - catalog capabilities catalog

Method Detail

doService

public void doService(OGCWebServiceEvent event)
               throws WebServiceException

implements the doService method inherited from the OGCWebService interface. The method receives a WCAS... request delievers it to one or more WFS's

Specified by:

doService in interface OGCWebService

Parameters:

event - event object that contains the requets to be performed

Throws:

WebServiceException

doService

public OGCWebServiceResponse doService(OGCWebServiceRequest request)
                                throws WebServiceException

the method performs the handling of the passed OGCWebServiceEvent directly and returns the result to the calling class/method

Specified by:

doService in interface OGCWebService

Parameters:

request - request (WMS, WCS, WFS, WCAS, WCTS, WTS, Gazetter) to perform

Throws:

WebServiceException

handleGetRecordResponse

private void handleGetRecordResponse()
                              throws java.lang.Exception

handles the creation and send of a getRecord response back to the client

Throws:

java.lang.Exception

handleDescribeRecordTypeResponse

private void handleDescribeRecordTypeResponse()

handles the creation and send of a describeRecordType response back to the client

handleTransactionResponse

private void handleTransactionResponse()

handles the creation and send of a transaction response back to the client

handleRegisterServiceResponse

private void handleRegisterServiceResponse()

handles the creation and send of a registerService response back to the client

handleGetCapabilitiesResponse

private void handleGetCapabilitiesResponse()

handles the response to a GetCapabilities request

transformToWFSRequest

private OGCWebServiceEvent[] transformToWFSRequest(OGCWebServiceRequest request)
                                            throws java.lang.Exception

transforms a CASRequest to one or more WFS requests

Throws:

java.lang.Exception

transformGetRecord

private OGCWebServiceEvent[] transformGetRecord(CASGetRecordRequest request)
                                         throws java.lang.Exception

transforms a getRecord request to one or more getFeature requests and encapsulates them into one or more OGCWebServiceEvents

Throws:

java.lang.Exception

transformDescribeRecordType

private OGCWebServiceEvent[] transformDescribeRecordType(CASDescribeRecordTypeRequest request)

transforms a describeRecordType request to one describeFeatureType request and encapsulates it into one OGCWebServiceEvent

transformTransaction

private OGCWebServiceEvent[] transformTransaction(CASTransactionRequest request)

transforms a (WCAS) transaction request to one (WFS) transaction request and encapsulates it into one OGCWebServiceEvent

transformRegisterService

private OGCWebServiceEvent[] transformRegisterService(CASRegisterServiceRequest request)
                                               throws java.lang.Exception

performs a registerService request. this will be done by requesting the service describing XML document from the specified address and transforming it into one or more (WFS) transaction requests encapsulated into one or more OGCWebServiceEvents.

Throws:

java.lang.Exception

handleGetCapabilities

private void handleGetCapabilities(CASGetCapabilitiesRequest request)

handles a get capabilities request by reading the capabilities document from its source.

performCascadeGetRecord

private void performCascadeGetRecord(CASGetRecordRequest request)
                              throws java.lang.Exception

performs getRecord requests against all known federated catalogs.

Throws:

java.lang.Exception

handleRequest

public void handleRequest(OGCWebServiceEvent event)

handles a request against an OGC web service

Specified by:

handleRequest in interface Handler

Parameters:

event - event object that contains the request to be performed

handleResponse

public void handleResponse(OGCWebServiceEvent event)

handles the response of an OGC web service

Specified by:

handleResponse in interface Handler

Parameters:

event - event oject that contains the response to a request

isInterested

public boolean isInterested(OGCWebServiceEvent event)

returns true if the handler is interested in a event

Specified by:

isInterested in interface Handler

Parameters:

event - event object that contains a request or response to a request

Returns:

true if the service is interested in handling the request/response contained within the event object

registerHandler

public void registerHandler(Handler handler)

registers a Handler so this Handler is able to act as a proxy to the registered handler

Specified by:

registerHandler in interface Handler

Parameters:

handler - handler to be registered to the service

removeHandler

public void removeHandler(Handler handler)

removes a registered handler from the service

Specified by:

removeHandler in interface Handler

Parameters:

handler - handler to be removed from the service

See Also:

registerHandler(Handler)