Writing server proxy in SAP BW

Hi Experts,

I am new to SAP BW. I have one below requirement

Third party ==> SAP PI ( JAVA STACK) 7.4 ==> SAP BW

We are writing a server proxy in BW. Data from SAP PI will be sent across to SAP BW i.e. to data source. We have already got the DataSource name in BW.

Could anyone help me out here what else we require here in order to write the code.

FYI: We have already generated the proxy in SAP BW.

Regards

Veeru