- Type Parameters:
T
- The expected type produced by the factory.TID
- The type of the TID being used.CTX
- The context which may influence the object being created by this factory.
- Functional Interface:
- This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
The
ContextLookupFactory
defines the functionality which must be
provided in order to represent a factory for object creation of objects
identified by an TID String
and of a predefined type specified with a
generic argument (in contrast to the BeanLookupFactory
, which creates
instances of an expected type). Many alternative implementations of a
ContextLookupFactory
may may exist which construct the instances
their way.
Having factories that generic as we define it here, we are able to decouple
our business logic from any specific framework: Your business logic must not
know anything about how the instances are generated. It mainly just needs to
know how to use the ContextLookupFactory
. It is up to the application
"end point", i.e. a command line tool with a main-method or a web-application
to finally decide which factory to use.
Depending on the implementation used or configuration provided, the
ContextLookupFactory
may return singletons or dedicated separate
instances when queried for instances.
-
Method Summary
Modifier and TypeMethodDescriptionThis method creates / retrieves an instance of the configured type identified with the given identifier (name).default T
This method creates / retrieves an instance of the configured type identified with the given identifier (name).
-
Method Details
-
create
This method creates / retrieves an instance of the configured type identified with the given identifier (name).- Parameters:
aIdentifier
- The name identifying the instance to be created / retrieved.aContext
- The context which may influence the object being created by this factory.- Returns:
- The instance being fabricated by this factory for the given instance name (identifier).
-
create
This method creates / retrieves an instance of the configured type identified with the given identifier (name).- Parameters:
aIdentifier
- The name identifying the instance to be created / retrieved.aContext
- The context which may influence the object being created by this factory.aProperties
- The dynamic properties which are used to configure the desired bean.- Returns:
- The instance being fabricated by this factory for the given instance name (identifier).
- Throws:
ClassCastException
- in case the fabricated type is not type compatible with the required type T.
-