I have rfd data which is in turtle or xml format. Now the data is having the vertex property name in the form of URL so when I upload that data to Janus graph it converts those URL values to ns1,ns2 and goes on for each unique url.

Now my first question is how the Janus graph is doing that and how I can get those ns values.

Because I need to define my own schema for Janus graph because I need to upload bulk data and for bulk upload, the manual schema creation is required for fast upload speed. How I can crate schema for those URLs. I mean during schema creation we have to declare the property of vertices and in my case properties are url so what is the best way to achieve this.