How to use substring in criteriaQuery api (jpa 2.0)

Question

I'm trying to do a substring query using jpa 2.0 but I dont know how to do this. Until now I have this code:

time = builder.between(
                matchesRoot.<Integer>get("startDateTime").toString().substring(8, 13),
                Integer.getInteger(DateTimeUtil.dateTimeWithoutFormat(searchCommercialsDTO.getFinalDate())),
                Integer.getInteger(DateTimeUtil.dateTimeWithoutFormat(searchCommercialsDTO.getIniDate()))
                );

But it isn't working since I cant compile it becouse of this error:

no suitable method found for between(String,Integer,Integer) method CriteriaBuilder.between(Expression,Y#1,Y#1) is not applicable (no instance(s) of type variable(s) Y#1 exist so that argument type String conforms to formal parameter type Expression) method CriteriaBuilder.between(Expression,Expression,Expression) is not applicable (no instance(s) of type variable(s) Y#2 exist so that argument type String conforms to formal parameter type Expression) where Y#1,Y#2 are type-variables: Y#1 extends Comparable declared in method between(Expression,Y#1,Y#1) Y#2 extends Comparable declared in method between(Expression,Expression,Expression

Any suggestions? Thanks!

Answer 1

Substring can be used via CriteriaBuilder.substring . That of course does not operate to integer, but to string.

In current approach you are calling toString method of Path . There is no connection between substring function in resulting SQL and toString method of class that is used to build query.