[rules-users] Bugs in rule templates?

[Bruno Freudensprung]

Hi Wolfgang,

Sure. Please find attached a small Maven/Eclipse project containing 3 
DRT and 3 unit test cases (Java in src/test/java/org/drools/bug, rules 
in src/test/resource/org/drools/bug) :

    * Test1OK(.java/.drt/.csv) is the one working well
    * Test1KO(.java/.drt/.csv) is the one illustrating the 1) behavior
    * Test1KO2(.java/.drt/.csv) is the one illustrating the 2) behavior

Regards,

Bruno.

Le 03/11/2011 14:07, Wolfgang Laun a écrit :
> Before you work on a JIRA could you please provide an (abbreviated) 
> example of a template that causes both errors?
> -W
>
> 2011/11/3 Bruno Freudensprung <bruno.freudensprung at temis.com 
> <mailto:bruno.freudensprung at temis.com>>
>
>     Hi all,
>
>     I am writing rules using Drools Templates and I noticed strange
>     problems (ocurring when I slightly modify a DRT that works well):
>
>        1. the template instanciation depends on the declarations order
>           of the parameters in the template header
>        2. if the rule template does not contain a package declaration
>           (default package) the instanciation of the template fails
>
>     I am working with Drools 5.1.1 but those problems occur in
>     5.2.0.Final and in 5.3.0.Final as well.
>     Do you think it is worth posting a JIRA?
>
>     Anyway let me tell you that Drools Templates are great! Our users
>     like that feature a lot! They start writing a rule in DRL format
>     and, once it works, they transform it into a DRT and put data into
>     a tsv file. It is quite a natural way of working. The general
>     perception here is that it is easier to "templatize" an existing
>     DRL than to write a decision table from scratch.
>
>     Best regards,
>
>     Bruno.
>
>     PS:
>
>     _DRT that works well_:
>
>     template header
>     *name
>     message
>
>     package templates;
>     *
>     import org.drools.bug.Entity;
>
>     template "TestTemplate"
>     rule "Test1 @{row.rowNumber}"
>         dialect "mvel"
>         when
>             Entity( $name : name == "@{name}" )
>         then
>             System.out.println("@{message}" + $name);
>             insert($name);
>     end
>     end template
>
>     _DRT that does not work_ (first case):
>
>     template header
>     *message
>     name
>
>     package templates;
>     *
>     import org.drools.bug.Entity;
>
>     template "TestTemplate"
>     rule "Test1 @{row.rowNumber}"
>         dialect "mvel"
>         when
>             Entity( $name : name == "@{name}" )
>         then
>             System.out.println("@{message}" + $name);
>             insert($name);
>     end
>     end template
>
>
>     _DRT that does not work_ (second case):
>
>     template header
>     *name
>     message
>     *
>     import org.drools.bug.Entity;
>
>     template "TestTemplate"
>     rule "Test1 @{row.rowNumber}"
>         dialect "mvel"
>         when
>             Entity( $name : name == "@{name}" )
>         then
>             System.out.println("@{message}" + $name);
>             insert($name);
>     end
>     end template
>
>
>
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