Read output of spark-rowsimilarity analysis directly without writing it to file

Question

I am writing scala code to pull data from db and run spark-rowsimilarity analysis. After running spark-rowsimilarity I want to read data returned by function directly write it back to mysql db. But I don't know how to read the data from indexeddataset returned by

val data = SimilarityAnalysis.rowSimilarityIDS(myIDs).

In debugger it shows datatype as Indexeddataset which contains (matrix,rowIDs,columnIds).

Thanks.