[rules-dev] Rule templates fed from objects

[Wolfgang Laun]

Hello Steve,

well, hm, yes, I'd seen from the source that it's possible to pass in arrays
of strings as actual parameters. But I'd thought of pushing this just one
small step further.

>From a TemplateContainer created from a template .drl file (no column data
yet) you could learn the column names. These names should correspond to
fields in a Bean. Access a Bean Object collection, retrieving the values (by
reflection) to expand the templates into actual rules.

Since there is a public Column[] getColumns in TemplateContainer, it's no
big deal to implement it in an application, so I won't insist ;-)

Regards
Wolfgang


2009/3/25 Steven Williams <stevearoonie at gmail.com>

> Hi Wolfgang,
>
> This has already been done - take a look at the tests in the templates
> project. I think I also put some in the examples project.
>
> cheers
> Steve
>
> 2009/3/25 Wolfgang Laun <wolfgang.laun at gmail.com>
>
>> Actual parameters for Rule Templates are currently supposed to come from
>> decision tables, actually spreadsheets.
>>
>> It would not be too difficult to extend the current API so that rule
>> instantiation takes the actual parameters from an object.
>>
>> What do you think?
>>
>> -WL
>>
>>
>>
>>
>>
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>>
>
>
> --
> -------------------------------------------------------------------
> Stevie Williams
> Does something with computers
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