case

Character by character case sensitive comparison.

regex

Regular expression match of entire string. Case insensitive by default, but may be changed by an escape in the expression.

See http://java.sun.com/j2se/1.4/docs/api/java/util/regex/Pattern.html and http://java.sun.com/j2se/1.4/docs/api/java/util/regex/Matcher.html#matches().

Note that pattern option CASE_INSENSITIVE, DOTALL, and UNICODE_CASE are used but can be reversed using the appropriate embedded escapes.

dest-dn

Compare using semantics appropriate to the DN format for the destination datastore.

octet

Compare octet (Base64 encoded) values.