Oliver B. Fischer created TAMAYA-74:
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Summary: Support for type narrowing
Key: TAMAYA-74
URL: https://issues.apache.org/jira/browse/TAMAYA-74
Project: Tamaya
Issue Type: New Feature
Components: Core
Affects Versions: 0.2-incubating
Reporter: Oliver B. Fischer
Fix For: 0.2-incubating
Tamays should support type narrowing. Currently a user of Tamaya can only
specify the concrete target type when getting a property value as object value.
I would like to see support for type narrowing in Tamaya to according to these
rules:
Given an interface or abstract class A and a class B implementing or inheriting
from A. If a user requests a property of type A Tamaya should be able to
determine that B is a valid return value for this request and return an
instance of B.
Given an interface or abstract class A and two classes B and C implementing or
inheriting from A. If a user requests a property of type A Tamays should be
able to determine that B and C are valid return values for this request and
return an instance of B or C.
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