1Net::LDAP::Filter(3)  User Contributed Perl Documentation Net::LDAP::Filter(3)
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NAME

6       Net::LDAP::Filter - representation of LDAP filters
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SYNOPSIS

9         use Net::LDAP::Filter;
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11         $filter = Net::LDAP::Filter->new( $filter_str );
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DESCRIPTION

14       The Net::LDAP::Filter object lets you directly manipulate LDAP filters
15       without worrying about the string representation and all the associated
16       escaping mechanisms.
17

CONSTRUCTOR

19       new ( [ FILTER ] )
20           Create a new object.  If FILTER is given, parse it.
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METHODS

23       parse ( FILTER )
24           Parse FILTER, updating the object to represent it.
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26       as_string
27           Return the filter in text form.
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29       print ( [ FH ] )
30           Print the text representation of the filter to FH, or the currently
31           selected output handle if FH is not given.
32
33       negate ( )
34           Logically negate/invert the filter object so that it matches the
35           opposite set of entries as the original.
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37           Instead of simply negating the text form by surrounding it with the
38           not operator, the negation is done by recursively applying De
39           Morgan's law.
40
41           Here is an example:
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43            (|(&(cn=A)(cn=B))(|(!(cn=C))(cn=D)))
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45           gets negated to
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47            (&(|(!(cn=A))(!(cn=B)))(&(cn=C)(!(cn=D))))
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FILTER SYNTAX

50       Below is the syntax for a filter given in RFC 4515
51       http://www.ietf.org/rfc/rfc4515.txt
52
53        filter       = "(" filtercomp ")"
54        filtercomp   = and / or / not / item
55        and          = "&" filterlist
56        or           = "|" filterlist
57        not          = "!" filter
58        filterlist   = 1*filter
59        item         = simple / present / substring / extensible
60        simple       = attr filtertype value
61        filtertype   = equal / approx / greater / less
62        equal        = "="
63        approx       = "~="
64        greater      = ">="
65        less         = "<="
66        extensible   = attr [":dn"] [":" matchingrule] ":=" value
67                       / [":dn"] ":" matchingrule ":=" value
68        present      = attr "=*"
69        substring    = attr "=" [initial] any [final]
70        initial      = value
71        any          = "*" *(value "*")
72        final        = value
73        attr         = AttributeDescription from Section 4.1.4 of RFC 4511
74        matchingrule = MatchingRuleId from Section 4.1.8 of RFC 4511
75        value        = AttributeValue from Section 4.1.5 of RFC 4511
76
77
78        Special Character encodings
79        ---------------------------
80           *               \2a, \*
81           (               \28, \(
82           )               \29, \)
83           \               \5c, \\
84           NUL             \00
85

SEE ALSO

87       Net::LDAP, Other online documentation
88

ACKNOWLEDGEMENTS

90       This document is based on a document originally written by Russell
91       Fulton <r.fulton@auckland.ac.nz>.
92

AUTHOR

94       Graham Barr <gbarr@pobox.com>
95
96       Please report any bugs, or post any suggestions, to the perl-ldap
97       mailing list <perl-ldap@perl.org>.
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100       Copyright (c) 1997-2004 Graham Barr. All rights reserved. This program
101       is free software; you can redistribute it and/or modify it under the
102       same terms as Perl itself.
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106perl v5.36.0                      2022-07-22              Net::LDAP::Filter(3)
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