Reverse engineer SAP R4 (HANA) object model

[Richard Freggi]

We are thinking about reversing engineer the spec of some SAP Reports.  I have noted that there's a Netweaver plugin for EA. Do you know if just a DB connection may be enough to see the schema?  Does R4 have similar capability already?  Or is there a preferred way to use EA as graphical object explored (class diagram) for Hana?  Thanks