BO 4.1 Universe Metadata extraction using Java Restful Webservice

Hi

We are building an application using the Restful webservice and are trying to extract the metadata from the Universe.

We are using BO4.1 SP3 pack.We are able to extract details of universe(unx),but we intend to extract tables and joins in universe.

Whether there is any URL to retrieve Tables and joins from Data Foundation Layer.

Please help.

Regards,

Kavitha S