Add a round-function to CriteriaBuilder

[lukasj]

Hello,

sometimes i miss a round function in CriteriaBuilder. Especially when i work with currency values. Many databases support it out of the box.

The syntax would be:

Expression round(Expression expr, Integer digits)

or:

cb.round(root.get(MyEntity_.value), 2);

Thank you.

Greetings

[lukasj]

• Issue Imported From: https://github.com/javaee/jpa-spec/issues/171
• Original Issue Raised By:@AleksNo
• Original Issue Assigned To: Unassigned