REST RQL Java Implementation

Question

Is there any java implementation of "RQL" (Resource Query Language), there is an implementation of "FIQL" (Feed Item Query Language) here but it is part of CXF, so my questions are :

1. Can I use the FIQL engine of CXF implementation separably from using CXF, in case I'm using Spring MVC
2. Is there implementation of RQL
3. RQL vs FIQL

Answer 1

R-SQL parser is partial implementation of FIQL:

• https://github.com/jirutka/rsql-parser
• https://github.com/jirutka/rsql-hibernate

Answer 2

Thanks Jakub, I have modified rsql-parser to support also RQL queries by adding

logical AND: "&" and OR: "|" ;
comparison operators: equal to : "=eq=", not equal to : "=ne=",
IN array list: "=in=" and NOT IN array list "=out="

I added also =in= and =out= operator support to rsql-hibernate. I have committed my modifications to github....