PropertiesComparisonRule constructor
Creates a new validation rule and sets its arguments.
property1
a name of the first property to compare.operation
a comparison operation: "==" ("=", "EQ"), "!= " ("<>", "NE"); "<"/">" ("LT"/"GT"), "<="/">=" ("LE"/"GE"); "LIKE".property2
a name of the second property to compare.