org.deegree.portal.standard.wfs.control
Class DigitizeListener

java.lang.Object
  org.deegree.enterprise.control.AbstractListener
      org.deegree.portal.standard.wfs.control.DigitizeListener

All Implemented Interfaces:

EventListener, WebListener

public class DigitizeListener
extends AbstractListener

This Listener is used to perform a wfs transaction (e.g. write a geometry that was digitized in the client to a WFS). The featureType must be passed as first parameter of the RPC request, the second parameter must contain a struct, whose members are replaced in the transaction template. WFS address and transaction template are both taken from the module configuration.

Version:

$Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Thu, 18 Jun 2009) $

Author:

Judit Mays, last edited by: $Author: mschneider $

Field Summary

protected DigitizerClientConfiguration	config
protected static String	CRS
protected static String	DIGITIZER_CLIENT_CONFIGURATION
protected static String	GEOMETRY

Constructor Summary

DigitizeListener()

Method Summary

void	actionPerformed(FormEvent event)
protected String	createWFSTransactionRequest(RPCWebEvent rpcEvent, String transactionType) Create a WFS request (transaction) from the params given in the rpc event and the module configuration.
protected QualifiedName	extractFeatureTypeAsQualifiedName(RPCWebEvent rpcEvent) The FEATURE_TYPE passed in the rpc must be given with namespace and featuretype name in the form: {http://some.address.com}:featureTypeName.
protected void	handleNegativeResponse(XMLFragment response) A negative response by the WFS needs to be handled individually in each derived Listener.
protected Object[]	handlePositiveResponse(XMLFragment response) A positive response by the WFS needs to be handled individually in each derived Listener.
protected Object[]	handleResponse(XMLFragment response) Handle the WFS transaction response.
protected XMLFragment	performRequest(String request, String wfsAddress) Send the request (e.g. wfs:Transaction, wfs:GetFeature) to the WFS of the passed address and return the received WFS response as XMLFragment.
protected String	replaceDeleteTemplateVars(String request, Object... args) this method will be overwritten in derived listeners
protected String	replaceSpecialTemplateVars(String request, Object... args) this method will be overwritten in derived listeners
protected String	replaceUpdateTemplateVars(String request, Object... args) this method will be overwritten in derived listeners
protected void	validateRequest(RPCWebEvent rpcEvent) Validate the RPC request: number of RPCParameter must be 2 or more.

Methods inherited from class org.deegree.enterprise.control.AbstractListener

getAlternativeNextPage, getHomePath, getInitParameter, getInitParameterList, getNextPage, getRequest, getReturnValue, gotoErrorPage, handle, setAlternativeNextPage, setDefaultAlternativeNextPage, setDefaultNextPage, setNextPage, setReturnValue, toModel

Methods inherited from class java.lang.Object

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

Field Detail

DIGITIZER_CLIENT_CONFIGURATION

protected static final String DIGITIZER_CLIENT_CONFIGURATION

See Also:

Constant Field Values

GEOMETRY

protected static final String GEOMETRY

See Also:

Constant Field Values

CRS

protected static final String CRS

See Also:

Constant Field Values

config

protected DigitizerClientConfiguration config

Constructor Detail

DigitizeListener

public DigitizeListener()

Method Detail

actionPerformed

public void actionPerformed(FormEvent event)

Specified by:

actionPerformed in interface WebListener

Specified by:

actionPerformed in class AbstractListener

validateRequest

protected void validateRequest(RPCWebEvent rpcEvent)
                        throws RPCException,
                               GeometryException,
                               UnknownCRSException

Validate the RPC request: number of RPCParameter must be 2 or more. The first param must contain the "FEATURE_TYPE". The second param must contain a struct with all the parameters that shall be replaced in the WFS request template. If the struct contains a member "GEOM", then one more member is mandatory: "CRS". Further params will be ignored in this Listener. They might want to be used to handle specific behaviour in derived Listeners.

Parameters:

rpcEvent -

Throws:

RPCException

GeometryException

UnknownCRSException

extractFeatureTypeAsQualifiedName

protected QualifiedName extractFeatureTypeAsQualifiedName(RPCWebEvent rpcEvent)
                                                   throws WFSClientException

The FEATURE_TYPE passed in the rpc must be given with namespace and featuretype name in the form: {http://some.address.com}:featureTypeName. This string gets extracted from the rpc and transformed into a QualifiedName.

Parameters:

rpcEvent -

Returns:

the QualifiedNames for the featureType in the passed rpcEvent

Throws:

WFSClientException - if featureType cannot be transformed to a QualifiedName.

createWFSTransactionRequest

protected String createWFSTransactionRequest(RPCWebEvent rpcEvent,
                                             String transactionType)
                                      throws WFSClientException

Create a WFS request (transaction) from the params given in the rpc event and the module configuration.

Parameters:

rpcEvent -

transactionType - the type of WFS transaction (might be "INSERT", "UPDATE", "DELETE")

Returns:

the request as string

Throws:

WFSClientException - if featureType in rpcEvent cannot be transformed to a QualifiedName or if the query template could not be read.

performRequest

protected XMLFragment performRequest(String request,
                                     String wfsAddress)
                              throws WFSClientException

Send the request (e.g. wfs:Transaction, wfs:GetFeature) to the WFS of the passed address and return the received WFS response as XMLFragment.

Parameters:

request - the request for the WFS

wfsAddress - the address of the WFS

Returns:

the response by the WFS as XMLFragment.

Throws:

WFSClientException - if request agains wfsAddress failed, or if wfs response could not be loaded as XMLFragment

handleResponse

protected Object[] handleResponse(XMLFragment response)
                           throws WFSClientException

Handle the WFS transaction response. A positive response may be overwritten in method handlePositiveResponse(). A negative response may be overwritten in method handleNegativeResponse().

Parameters:

response -

Returns:

any objects that are returned from handlePositiveResponse() and that might be needed in derived listeners. Here, it returns null.

Throws:

WFSClientException - if the transaction response does not contain a root element of "wfs:TransactionResponse"

handlePositiveResponse

protected Object[] handlePositiveResponse(XMLFragment response)

A positive response by the WFS needs to be handled individually in each derived Listener. Override the method, if needed. In this basic implementation, it sets the request attribute MESSAGE with the value of i18n.IGEO_STD_WFS_TRANSACTION_SUCCESS

Parameters:

response -

Returns:

any objects that might be needed. Here, it returns null.

handleNegativeResponse

protected void handleNegativeResponse(XMLFragment response)
                               throws WFSClientException

A negative response by the WFS needs to be handled individually in each derived Listener. Override the method, if needed. In this basic implementation, it throws a WFSClientException IGEO_STD_WFS_TRANSACTION_FAILED, containing the message of the ServiceException element of the response.

Parameters:

response -

Throws:

WFSClientException - in any case. always.

replaceSpecialTemplateVars

protected String replaceSpecialTemplateVars(String request,
                                            Object... args)
                                     throws WFSClientException

this method will be overwritten in derived listeners

Parameters:

request -

args - any number of Objects needed in this method

Returns:

the request, with all special variables replaced. In this implementation, it returns the original request.

Throws:

WFSClientException

replaceUpdateTemplateVars

protected String replaceUpdateTemplateVars(String request,
                                           Object... args)
                                    throws WFSClientException

this method will be overwritten in derived listeners

Parameters:

request -

args - any number of Objects needed in this method

Returns:

the request, with all update variables replaced. In this implementation, it returns the original request.

Throws:

WFSClientException

replaceDeleteTemplateVars

protected String replaceDeleteTemplateVars(String request,
                                           Object... args)
                                    throws WFSClientException

this method will be overwritten in derived listeners

Parameters:

request -

args - any number of Objects needed in this method

Returns:

the request, with all delete variables replaced. In this implementation, it returns the original request.

Throws:

WFSClientException