Re: [rules-users] TypeDeclaration - POJO or TEMPLATE?
I believe I have it... "declare" is meant to be used for easy generation
of java classes, so that rules can instantiate objects and use them as
such. For dynamic data models, "template" is a better fit, as getField
etc are geared towards map-like data structures.
I believe that I could have :
template "Address"
String line1
String line2
end
template "Person"
String name
int age
Object address
end
rule "Test"
when
add: Address(line1 == "address")
person: Person(address == add)
then
...
Is this correct?
Cheers
Stephen Kestle wrote:
I'm creating a type hierarchy using TypeDeclarations based on an
ontological model (analagous to an xml schema for the purposes of this
post).
If I declare a drl file to have the following declarations
declare Address
line1 : String
line2 : String
end
declare Person
name : String
age : int
address : Address
end
it will create Java Pojo classes for me. However, I had it all
working using fact templates, except for the address item. Is it
possible to insert fact implementations based on templates, while
declaring TypeDeclarations in the drl? (I now go to look for how to
specify the format = TEMPLATE for the drl)
I say this because I'm looking up values using id strings - e.g. the
exact same way that FactTemplate based Facts does accessing. I don't
want to have to convert all my String ids to reflectively call the set
methods on the created Pojo.
Hopefully this is enough info for you 5.0 developers - I'm still
trying to wrap my head around it all.
Cheers
Stephen
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