$filter = Net::LDAP::Filter->new( $filter_str );
DESCRIPTIONThe Net::LDAP::Filter object lets you directly manipulate LDAP filters without worrying about the string representation and all the associated escaping mechanisms.
- new ( [ FILTER ] )
- Create a new object. If FILTER is given, parse it.
- parse ( FILTER )
- Parse FILTER, updating the object to represent it.
- Return the filter in text form.
- print ( [ FH ] )
- Print the text representation of the filter to FH, or the currently selected output handle if FH is not given.
- negate ( )
Logically negate/invert the filter object so that it matches the opposite
set of entries as the original.
Instead of simply negating the text form by surrounding it with the not operator, the negation is done by recursively applying De Morgan's law.
Here is an example:
gets negated to
FILTER SYNTAXBelow is the syntax for a filter given in RFC 4515 http://www.ietf.org/rfc/rfc4515.txt
filter = "(" filtercomp ")" filtercomp = and / or / not / item and = "&" filterlist or = "|" filterlist not = "!" filter filterlist = 1*filter item = simple / present / substring / extensible simple = attr filtertype value filtertype = equal / approx / greater / less equal = "=" approx = "~=" greater = ">=" less = "<=" extensible = attr [":dn"] [":" matchingrule] ":=" value / [":dn"] ":" matchingrule ":=" value present = attr "=*" substring = attr "=" [initial] any [final] initial = value any = "*" *(value "*") final = value attr = AttributeDescription from Section 4.1.4 of RFC 4511 matchingrule = MatchingRuleId from Section 4.1.8 of RFC 4511 value = AttributeValue from Section 4.1.5 of RFC 4511 Special Character encodings --------------------------- * \2a, \* ( \28, \( ) \29, \) \ \5c, \\ NUL \00
ACKNOWLEDGEMENTSThis document is based on a document originally written by Russell Fulton <[email protected]>.
AUTHORGraham Barr <[email protected]>
Please report any bugs, or post any suggestions, to the perl-ldap mailing list <[email protected]>.
COPYRIGHTCopyright (c) 1997-2004 Graham Barr. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.