SDMetrics User Manual - Logical Operators

Logical operators can be used to combine condition expressions. The logical operators allowed are

A & B (or A and B to avoid conflict with the XML special character &, see Section 8.5.5 "Expression Terms and XML") - true if both condition expressions A and B are true, else false.
A | B - true if at least one condition expression A or B is true, else false.
!A - true if A is not true, else false.

As usual, ! has precedence over & which has precedence over |.

An example of a condition expression with logical operators is: (NumOps>5) & (!(NumAttr=3 | islowercase(name))

Section 8.5.4.2 "Boolean Functions"

Section 8.5.5 "Expression Terms and XML"