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Help / WLanguage / WLanguage syntax / Structured statements

Webservice: how do I get the webservice response?
Syntax for SOAP web services

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AFTER

In french: AFTER

Runs a process only after a given procedure has been executed, and continues to execute the current code while waiting for this procedure to end. This type of instruction is used to:

call a SOAP web service asynchronously.
call a browser procedure (with a return value) from a WEBDEV Page control.
call a window procedure (with a return value) from a page contained in a WEBDEV Page control.

Example

trackingSearch is trackSearch
trackingSearchRes is resultTrackSearch
trackingSearch.accountNumber = 99999999
trackingSearch.consigneesCountry = "FR"
trackingSearch.consigneesZipCode = "37100"
trackingSearch.sendersRef = "111111"

AFTER trackingSearchRes = TrackingServiceWSService.trackSearch(trackingSearch) DO
	IF ErrorOccurred() THEN
		Trace("Echec de l'appel au service Web : " + ErrorInfo(errFullDetails))
	ELSE
		Trace("Webservice correctement exécuté")
	END
END

Syntax

Asynchronous call to a SOAP web service Hide the details

AFTER <Result> = <SOAP web service call> DO
<Code executed if response>
END
<Code executed after SOAP web service call>

<AFTER>:

Marks the beginning of the statement block.

<Result>:

Result of the execution of the SOAP web service.

<SOAP web service call>:

Call to the procedure used to query the SOAP web service.

<Code executed if response>:

Code executed only if the SOAP web service has been executed and has sent the response.

<Code executed after SOAP web service call>:

Code executed directly after the call to the SOAP web service (whether or not the SOAP web service sent a response).

<END>:

Marks the end of the statement block.

WEBDEV Page control: call a window procedure (with a return value) from a page Hide the details

AFTER <Result> = MyHostControl.ProdcedureName() DO
<Code executed if response>
END
<Code executed after call to procedure>

<AFTER>:

Marks the beginning of the statement block.

<Result>:

Result of the procedure of the window containing the WEBDEV Page control.

<MyHostControl.ProcedureName()>:

Call to the procedure associated with the window from the page contained in the WEBDEV Page control.

<Code executed if response>:

Code executed only if the procedure has been executed and has sent the response.

<Code executed after call to procedure>:

Code executed directly after the call to the procedure (whether or not the procedure sent a response).

<END>:

Marks the end of the statement block.

Remarks

Webservice: how do I get the webservice response?

The web service response can be retrieved in <Code executed if response>. Several syntaxes are available:

Declaration of the return value in the block AFTER ... DO:
In this case, the web service returns a wsResponse variable. To be manipulated, this variable must be explicitly assigned to the variable used to retrieve the result of the web service.
AFTER x = Websevice_Call() DO
// here x is a wsResponse, it must be explicitly assigned
// in a variable of the web service return type
Res is TypeWS = x
// code executed after the web service response
//.... = Res
END
// code executed immediately
Return value declaration outside the block AFTER ... DO:
In this case, the return variable can be manipulated directly.
Res is TypeWS
AFTER Res = WebseviceNoResponse() DO
// code executed after the web service response
//.... = Res
END
// code executed immediately

Syntax for SOAP web services

This syntax can only be used for calling SOAP web services.
The <Code executed if response> is executed as a Callback procedure once the web service has been executed and has sent a response.
Important: code executed after a call to the SOAP webservice (after the FIN keyword) is executed in the context of the calling thread. If the call is made in the main thread, the execution of a wait function (ThreadPause, Multitask, EventWait, etc.) will cause a deadlock.

The ErrorOccurred WLanguage variable can be used to handle possible errors during the call to the SOAP web service. For example:

// Appelle le Webservice SOAP de vérification du numéro de TVA
AFTER MaRéponse = checkVat(sPays, sNumTVA) DO
	// Si on a eu une erreur
	IF ErrorOccurred THEN
		...
	END
END