[jboss-jira] [JBoss JIRA] (DROOLS-470) Decision Table (XLS) should support fixed conditions, such as SeatDesignation(isNeighborOf($guest))

[Geoffrey De Smet (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13073565#comment-13073565 ] 

Geoffrey De Smet commented on DROOLS-470:
-----------------------------------------

Here's an example of a XLS file with workaround 1:
  https://github.com/droolsjbpm/optaplanner/blob/master/optaplanner-examples/src/main/resources/org/optaplanner/examples/dinnerparty/solver/dinnerPartyExtraScoreRules.xls

Run DinnerPartyApp in optaplanner-examples to try it out.

> Decision Table (XLS) should support fixed conditions, such as SeatDesignation(isNeighborOf($guest))
> ---------------------------------------------------------------------------------------------------
>
>                 Key: DROOLS-470
>                 URL: https://issues.jboss.org/browse/DROOLS-470
>             Project: Drools
>          Issue Type: Enhancement
>    Affects Versions: 6.1.0.Beta2
>            Reporter: Geoffrey De Smet
>            Assignee: Michael Anstis
>             Fix For: 6.3.0.Beta2
>
>
> This DT should work:
> ||CONDITION||CONDITION||ACTION|
> |$guest : SeatDesignation()|$neighbor : SeatDesignation(isNeighborOf($guest))||
> |guestName == "$param"|guestName == "$param"|doSomething();|
> It crashes because of the "SeatDesignation(isNeighborOf($guest))". Only empty parenthesis are allowed.
> Failing workaround 1: This workaround (as specified by the docs), does NOT work well, because it adds the same condition (isNeighborOf($guest)) multiple times in the same rule:
> ||CONDITION||CONDITION||CONDITION||ACTION|
> |$guest : SeatDesignation()|$neighbor : SeatDesignation()|||
> |guestName == "$param"|isNeighborOf($guest), guestName == "$param"|isNeighborOf($guest), guestAge == "$param"|doSomething();|
> Failing workaround 2: Adding an extra, hidden column with that condition does not work when new rows are added because condition columns with an empty cell are ignored.



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