When attempting to call a process model exposed as a web service via the webserv

mpontius over 10 years ago

When attempting to call a process model exposed as a web service via the webservicequery() function in Appian 7.6 and 7.7 we are receiving an error. This is the simplest case model (only a start and end node) exposed as a service. The Process Model kicks off as it should, but when the result comes back Appian can not handle it... Below is the call and response, to replicate it all that needs to be done is to create a Process Model simply with a start and an end node (no params or anything) and expose it as a web service.

Expression to invoke service (need to put in real user name and password:
= webservicequery(
a!wsConfig(
wsdlUrl: "localhost:8080/.../CallWebService
service: "{appiancorp.com/.../pm}CallWebService",
port: "StartProcessIFPort",
operation: "{appiancorp.com/.../pm}start"
),
{
startRequest: {
username: "xxxxxx",
password: "xxxxxx"...

Discussion posts and replies are publicly visible

0 mpontius over 10 years ago

...
}
}
)

ERROR:
There was an error testing the rule:

Expression evaluation error at function 'webservicequery': Error evaluating function 'webservicequery' : XML handling failure trying to convert value WsResult{{httpStatusCode=200, httpErrorOccurred=false, fault=null, returnValue={TypedValue[it=3,v=startResponse]=TypedValue[it=1684,v={268435475}]}}} to Appian type WsResult (id=1348)

Any thoughts or help?
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0 marcoc200 over 10 years ago

for sure there is an extra { in the line service
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0 mpontius over 10 years ago

I am not seeing an extra {. That is part of the string, it is just not correctly colored here in tempo.
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0 abhi.jana
Appian Employee
over 10 years ago

Currently it isn't possible to call a process model published as Web Service Using webservicequery(). This has been reported as a defect to Engineering with reference number AN-55618.
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0 leslies331 over 10 years ago

Any progress on this defect? I am having a similar issue. I kick off an Appian Process from a SAIL report. The process executes fine. I don't care about the results, however, this error message appears on the SAIL report... XML handling failure trying to convert value WsResult{{httpStatusCode=200, httpErrorOccurred=false, fault=null, returnValue={TypedValue[it=3,v=startResponse]=TypedValue[it=5722,v={536902091}]}}} to Appian type WsResult (id=3262) We are on Appian V7.6
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0 David Williams over 10 years ago

Would an option be to use the process writer function? There are a few posts on here with some examples.

Hope that helps.
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0 leslies331 over 10 years ago

I tried the webservicewrite function. It returns without an error, however, no process instances are kicked off.
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