Criteria provide convenient expression for conditional logic
The basic expression syntax:
criterion: leftOperand operator rightOperator
operators:
- =, !=, >=, <=, <, >
- : assertly operator for contains, RegExpr, ranges etc...
predicate: criterion [logical operator criterion]
logical operators:
- &&
- ||
predicate examples :
$key1 = '123' || key2 > 3
($key1 = '123' || key2 > 3) AND $key5:/abc/
Expression with $ is expanded before evaluation if corresponding path exists.