Composition enablement for partner and customer extensibility of inversion of control objects

A computer program product comprising:

• a non-transitory computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code, executable by one or more computer processors, configured to:
• deliver an interface to a first downstream provider, wherein the interface includes a bean implementation format;
• and
• perform at least one of:
• (i) receive a provider level (POL) selection from the first downstream provider, wherein the POL selection corresponds to a POL stored in an extender, and deliver a first bean implementation to the first downstream provider based on the POL, and (ii) receive a constructed bean implementation from the downstream provider, determine a POL of the downstream provider, and store the constructed bean implementation in the extender at the determined POL.

A method comprising:

• receiving an interface comprising a bean implementation format;
• and
• performing at least one of:
• (i) constructing a first bean implementation, and delivering the first bean implementation to an extender, and (ii) selecting a provider level (POL) for a second bean implementation, and delivering the POL selection to an extender.