marioishac / typespecializer

A annotation processor in java that allows specialzied implementations to be returned under the abstract declared type easily.

Type Specializer

Type Specializer makes it easy for specific implementations (subclasses) to be returned under a declared type (the superclass) depending on the type parameters the factory method is provided.

How to Use

In order to get specific implementation I under the declared type A, where I extends A, assuming:

F represents the class that holds the factory method.

FM represents the factory method.

T... represents the type parameters.

CT... represents the Class instances associated with the type parameters.

One would do:

A<T...> specificImplementation = F.FM(CT...);

Upcoming Additions

1. Automatically fetching specialized type based on subclass declarations rather than explicitly needing to provide them through the annotation.

2. Criteria for types provided that extends past an exact match (super and extends). For example, a type argument of a subclass of a specialized argument would result in a specialized instance.

3. Applying criteria to types based on attributes other than position. (For example, applying criteria to any type that is present among the type arguments list rather than the type argument at a certain index).