Hi Kumar,
In addition to what Thierry mentioned you could also use the C4C integration via standard Operational Data Provisioning (ODP) interfaces. This integration was acutally built for SAP BW and allows you to access any C4C data sources. From my perspective you can also build upon that for a native SAP HANA integration. Please also have a look at this guide: How To... load SAP Business Suite data into SAP... | SAP HANA.
Besides that question let me also add the following: SAP Cloud for Customer already runs on SAP HANA since Nov. 2013. You may also use the powerful built-in analytics within C4C for analyzing data and any of your reporting demands. If your report should consider external data as well, you can combined the existing C4C data source with an external, so-called Cloud Data Source. More infomation is published in the C4C Analytics Guide: http://help.sap.com/saphelp_sapcloudforcustomer/en/PDF/EN-3.pdf.
I hope this helps...
Best regards,
Sven