[rules-users] Accessing properties of an object within a Nested Collection of a Nested Collection

[Michael Anstis]

You wouldn't be able to query just the AutoManufacturer record though.

You'd need to perform a join across tables, e.g.:-

when
  $p: Part( partVendor == "PV999999" )
  $m: Model( partsList contains $p )
  $b: Brand( brandModels contains $m )
  $a : AutoManufacturer( brandsCollection contains $b )
then
  System.out.println( $p + ", " + $m + ", " + $b + ", " + $a );
end

On 2 May 2012 19:04, James K <james_kosa at verizon.net> wrote:

> Luane - Yes, it would be a normalized database, there would be only one
> entry
> for a manufacturer with all of the child records related by Foreign Keys or
> relational tables.
>
> Excuse my ignorance I am relatively new to Drools, can you please expand on
> the following:
>
> "...(...$p.getPartsName()...) "
>
> This is where I am having a hard time on how to navigate into the nested
> collections. Or are you saying to insert the PART, MODEL, BRAND, etc as
> individual facts?  How would I relate it back Automanufacturer fact?
>
>
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