Re: [optaplanner-dev] Call center example

[Radovan Synek]

Hello Patrick,

your observation is right, although it's difficult to spot it, as the waiting time is updated by the ResponseTimeUpdatingVariableListener [1] whenever a call is added, removed, or assigned to a different Agent. However, updating the Call.duration field, which is not a PlanningVariable, itself does not trigger the listener.

The right solution would be implementing the same logic from the listener in the ProlongCallByMinuteProblemChange.

[1] https://github.com/kiegroup/optaplanner-quickstarts/blob/stable/use-cases/call-center/src/main/java/org/acme/callcenter/solver/ResponseTimeUpdatingVariableListener.java

[2] https://github.com/kiegroup/optaplanner-quickstarts/blob/stable/use-cases/call-center/src/main/java/org/acme/callcenter/solver/change/ProlongCallByMinuteProblemChange.java

Best regards,

Radek

On Thu, Dec 8, 2022 at 11:39 AM Patrick Ondreovici <ondre...@gmail.com> wrote:

Hi i have a question about the call center example.

The prolongcall method is not updating the next call estimated time waiting. It is possible to update also the estimated time waiting when appears a change in call duration ?

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Radovan Synek

Principal Software Engineer, Business Automation

Red Hat EMEA

Brno, Czech Republic

[Patrick Ondreovici]

But in the ProlongCallByMinuteProblemChange doChange method, we don't have the ScoreDirector.

How it should be done ?

[Radovan Synek]

On Thu, Dec 8, 2022 at 4:01 PM Patrick Ondreovici <patrick.o...@rodeapps.com> wrote:

But in the ProlongCallByMinuteProblemChange doChange method, we don't have the ScoreDirector.

How it should be done ?

The ProblemChange uses a ProblemChangeDirector, which is a simplified version of ScoreDirector.

The ProlongCallByMinuteProblemChange updates the Call in question via the ProblemChangeDirector; use that API to implement the same loop from the ResponseTimeUpdatingVariableListener, which updates also all the following calls.

 

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