Questions Tagged With loop

multiple exceptions lead to ivy:error:loop

Adrian Imfeld — Wed, 11 Dec 2019 09:41:15 -0500

Hi there

We get an "ivy:error:loop" exception by Ivy in a loop. In this loop, we send some ws calls in a Callable Sub. Possibles exceptions are not handled in the Callable Process, but are caught by a "Inscribe Error Boundary Event" on the Callable Sub Element. The loop-exception occurs when we receive an exception (ivy:error:webservice:exception) in this Callable Sub twice.

From our point of view one task could easily receive more than one identical exception during its execution. Ivy should not send a loop-exception in this case.

Why does Ivy react like that? Have we done something wrong?
Is there a solution or workaround for our problem?

Endless loop when calling a Webservice

Fotini Kalantidou — Fri, 21 Sep 2018 02:22:05 -0400

When calling an external Webservice we get a log of type: "The following requests seems to loop endless or are blocked:"

According to an answer in another post:

The endless loop logs occur when:

a normal user request is running for longer than 5 minutes
a system user task is running longer than 1 hour

How could be provoke such an error? And how could we prevent such an error when it occurs on a WebService call? Maybe by defining a Timeout on the Webservice call? Does a default timeout for the WS Call exist?

Best Practice for filling a List in a loop

Björn — Fri, 22 Nov 2013 10:52:25 -0500

I'm using Xpert.ivy Designer 5.1.0 (Lauberhorn) S6. I tried to fill a List in a loop:

In a form I ask the user, how many entries the list will have (numberOfIterations)
With an Alternative Switch element I'm ensuring, that the following steps are executed as often as the defined number of iterations:
In a form I ask the user for the attributes of the list entry (attribute one, attribute two)
In three different variants I add the new list entry to the list. Only the most time consuming variant works. The other variants don't work as expected. I suppose, this is a bug.

To better understand, please watch the screencast on YouTube (2 minutes).

An answer until 25.11. evening would be very appreciated.

[EDIT]: Here the link to the iar-File for testing.