[jboss-jira] [JBoss JIRA] (DROOLS-5473) Implement DefineFunction scheleton

[Gabriele Cardosi (Jira)]

Gabriele Cardosi created DROOLS-5473:
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             Summary: Implement DefineFunction scheleton
                 Key: DROOLS-5473
                 URL: https://issues.redhat.com/browse/DROOLS-5473
             Project: Drools
          Issue Type: Sub-task
            Reporter: Gabriele Cardosi
            Assignee: Gabriele Cardosi


Implement DefineFunction management scheleton.

DefineFunctions are similar to DerivedFields, since both make usage of EXPRESSION.

Differences are

1) DerivedFields methods should referenced inside "transformations" map, DefineFunctions not

2) DerivedFields methods names are automatically generated, while DefineFunctions ones are retrieved from DefinedFunctions declaration

3) DefineFunctions requires at least one Parameter (beside the List of already defined fields  )



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