1Net::LDAP::Control::PreURseeard(C3o)ntributed Perl DocumNeentt:a:tLiDoAnP::Control::PreRead(3)
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NAME

6       Net::LDAP::Control::PreRead - LDAPv3 Pre-Read control object
7

SYNOPSIS

9        use Net::LDAP;
10        use Net::LDAP::Control::PreRead;
11        use Net::LDAP::Constant qw( LDAP_CONTROL_PREREAD LDAP_SUCCESS );
12
13        $ldap = Net::LDAP->new( "ldap.mydomain.eg" );
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15        $preread = Net::LDAP::Control::PreRead->new( attrs => [ qw/givenName/ ] );
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17        my $mesg = $ldap->modify( "cn=Barbara Jensen, o=University of Michigan, c=US",
18                                  replace => { givenName => "Babs" },
19                                  control => $preread );
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21        if ($mesg->code eq LDAP_SUCCESS) {
22          my ($previous) = $mesg->control( LDAP_CONTROL_PREREAD );
23          my $entry = $previous ? $previous->entry() : undef;
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25          if ($entry) {
26            print "givenName changed from '" .
27                  join("', '", $entry->get_value(givenName") .
28                  "' to 'Babs'\n");
29          }
30        }
31

DESCRIPTION

33       "Net::LDAP::Control::PreRead" provides an interface for the creation
34       and manipulation of objects that represent the "Pre-Read Controls" as
35       described by RFC 4527.
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37       In modification operations, the "Pre-Read request control" indicates to
38       the server that a copy of the original entry before the update is to be
39       returned.  After the successful completion of the operation, the
40       accompanying "Pre-Read response control" allows one to retrieve the
41       original value from the server's response.
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43       One use case of this control may be to obtain replaced or deleted
44       values of modified attributes or a copy of the entry being deleted.
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CONSTRUCTOR ARGUMENTS

47       In addition to the constructor arguments described in
48       Net::LDAP::Control the following are provided.
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50       attrs => [ ATTR, ... ]
51           A list of attributes to be returned in the entry returned in the
52           response control.
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54           If absent, all attributes are returned.
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56           Operational attributes may be included in the list by explicitly
57           asking for them or by using special "+" feature (provided the
58           server supports this feature).
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METHODS

61       As with Net::LDAP::Control each constructor argument described above is
62       also available as a method on the object which will return the current
63       value for the attribute if called without an argument, and set a new
64       value for the attribute if called with an argument.
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66       In addition to these methods, the control also supports the following
67       method:
68
69       entry ()
70           Returns the entry from the response control in the response message
71           to the LDAP request that contained the request control.
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73           The result is either a Net::LDAP::Entry object or undefined.
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SEE ALSO

76       Net::LDAP, Net::LDAP::Control, http://www.ietf.org/rfc/rfc4527.txt
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AUTHOR

79       Peter Marschall <peter@adpm.de>
80
81       Please report any bugs, or post any suggestions, to the perl-ldap
82       mailing list <perl-ldap@perl.org>
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85       Copyright (c) 2008,2011 Peter Marschall. All rights reserved. This
86       program is free software; you can redistribute it and/or modify it
87       under the same terms as Perl itself.
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91perl v5.30.0                      2019-07-26    Net::LDAP::Control::PreRead(3)
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