I started working on a proof-of-concept for using Antlr 4 for query parsing
in Hibernate. It is very rudimentary at this point. It is pushed to
GitHub here: https://github.com/sebersole/hibernate-antlr4-poc
This is mean as an attempt to determine whether/how Antlr 4 could/would
work for our needs. Because Antlr 4 was such a big deviation from versions
2 and 3 we need to see how we can map many of the paradigms and patterns we
use in our existing parsers.