Rg: mysql intergration


i am using elastic search...i succeeded in searching of all docs
type...now i want to search in databases like sqlserver,sqlite.. now
what i am doing is connecting to database and converting those results
into xls,doc...etc..and giving those docs for searching in elastic
search.. but i want to know is there any better way in elastic search
for searching in databases..? because updating is difficult in this

thanks in advance...