[rules-users] Problem in writing rule and apply DSL

[braveheart85]

Hello guys,

I really need your help.
I'm writing a DSL file in order to allow my application user to write their
simple rules.
I have queries of this typology:

$a: Data( )
$b: Year( ) from $a.years
$c: Person( ) from $b.persons

dsl mapping (inline version):

there are persons=$a: Data( ) $b: Year( ) from $a.years $c: Person( ) from
$b.persons

now if i would add attribute to person i can't, for example to get persons
over 18 years old.
If i write:

there are persons
- age more than 18

drools engine try to add attribute to Data object, probably because it is
first object in line.
To resolve this problem i should write query something like:

$c: Person( ) from ( Year( ).persons from Data( ).years )

In this way i can add attribute to Person instead of Data. Unfortunatly i
don't know how can i get it.
Someone can help me please.

Best Regards





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