PageRanking with DIH

[vineet yadav]

Hi,
I have indexed documents and computed pagerank for documents. I want
to update pagerank for indexed document and sort solr search result
with pagerank.
 I did some research and found that  index time boost can be used, but
I don't know how to use it. Can I boost document at index time  with
DIH ? Can anybody help me in this regard ? Can I use Solr relevancy
score with PageRanking score to sort search result?  Any suggestions
are welcome
!!
Thanks