Hi Surya
I've found this Information in SCN related to SF as Finny Babu explained it really well.
SAP has released a new adapter called the “SFSF Adapter” for SAP NetWeaver Process Integration (PI) . This adapter is now available as part of a release independent add-on “SAP NetWeaver Process Integration, connectivity add-on 1.0”.
The connectivity add-on runs on the SAP NetWeaver Process Integration Adapter Framework, based on the Java Connector Architecture (JCA). Accordingly, its capabilities are being used for enabling the common message delivery options (exactly-once, exactly-once-in-order), an automatic retry mechanism and information logging. The configuration of connectivity adapters, monitoring and operations is done in the same way as for other adapters of SAP NetWeaver Process Integration (PI). The connectivity add-on runs fully in the Java stack and supports all valid deployment options of SAP NetWeaver Process Integration (ABAP + Java, Java only).
This SAP NetWeaver Process Integration, connectivity add-on 1.0 is included in your SAP Process Integration license and you do not need any further license to use the adapter.
Check this links
Pilot Test of the Integration add-on for SAP ERP HCM & SuccessFactors BizX
SAP HCM and SuccessFactors BizX Integration Using SAP PI
SuccessFactors - Useful Resources and Documents
SAP HCM integration with SuccessFactors BizX – For now and in the future
SuccessFactors (SFSF) Adapter for SAP NetWeaver Process Integration
Hope this Info
will be Useful
Cheers 
Pradyp