[eclipselink-dev] Checkin-in: JPQL Parsing - CASE, INDEX, SUBSTRING, CON

[Tom Ware <tom.ware@xxxxxxxxxx>]

Bug 249224 - JPQL Parsing Logic for CASE, INDEX, SUBSTRING, CONCAT.

Note: This is only the changes for parsing code, more work is still need to make 
these items functional in queries.

Patch here:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=249224

Design Notes and description of what is implemented here:

http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/jpql

Reviewed by Chris Delahunt

Tested with existing tests and added Concat Test.  More testing to come as full 
implementations are complete.