The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.


Net::LDAP::Control::EntryChange - LDAPv3 Entry Change Notification control object


 use Net::LDAP;
 use Net::LDAP::Control::PersistentSearch;

 $ldap = Net::LDAP->new( "" );

 $persist = Net::LDAP::Control::PersistentSearch->new( changeTypes => 15,
                                                       changesOnly => 1,
                                                       returnECs => 1 );

 $srch = $ldap->search( base     => "cn=People,dc=mydomain,dc=eg",
                        filter   => "(objectClass=person)",
                        callback => \&process_entry, # call for each entry
                        control  => [ $persist ] );

 die "error: ",$srch->code(),": ",$srch->error()  if ($srch->code());

 sub process_entry {
   my $message = shift;
   my $entry = shift;
   my ($control) = $message->control(LDAP_CONTROL_ENTRYCHANGE);

   print $control->changeType()."\t".$entry->dn()."\n";


Net::LDAP::Control::EntryChange provides an interface for the creation and manipulation of objects that represent the EntryChangeNotification control as described by draft-smith-psearch-ldap-03.txt.


In addition to the constructor arguments described in Net::LDAP::Control the following are provided.


An integer value telling the type of LDAP operation that the entry has undergone. It is one of the following values (which represent the LDAP operations indicated next to them):

1 = add
2 = delete
4 = modify
8 = modDN

When changeType is 8 (for modDN) this parameter tells the entry's DN before the modDN operation. In all other cases this value is not defined.


This is the change number according to <draft-good-ldap-changelog-03.txt> assigned by a server for the change. If a server supports an LDAP Change Log it should include this field.

Usually you do not need to create a Net::LDAP::Control::EntryChange control yourself because it is provided by the server in response to an option with the Net::LDAP::Control::PersistentSearch control.


As with Net::LDAP::Control each constructor argument described above is also available as a method on the object which will return the current value for the attribute if called without an argument, and set a new value for the attribute if called with an argument.


Net::LDAP, Net::LDAP::Control, Net::LDAP::Control::PersistentSearch


Peter Marschall <>, based on Net::LDAP::Control::Page from Graham Barr <> and the preparatory work of Don Miller <>.

Please report any bugs, or post any suggestions, to the perl-ldap mailing list <>


Copyright (c) 2004 Peter Marschall. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.