ietf.org/proceedings/01aug/I-D/draft-ietf-ldapext-psearch-03.txt"> Persistent Search Draft v03 which is printed out below for convenience:
5. Entry Change Notification Control This control provides additional information about the change the caused a particular entry to be returned as the result of a persistent search. The controlType is "2.16.840.1.113730.3.4.7". If the client set the returnECs boolean to TRUE in the PersistentSearch control, servers MUST include an EntryChangeNotification control in the Controls portion of each SearchResultEntry that is returned due to an entry being added, deleted, or modified. EntryChangeNotification ::= SEQUENCE { changeType ENUMERATED { add (1), delete (2), modify (4), modDN (8) }, previousDN LDAPDN OPTIONAL, -- modifyDN ops. only changeNumber INTEGER OPTIONAL -- if supported } changeType indicates what LDAP operation caused the entry to be returned. previousDN is present only for modifyDN operations and gives the Dn of the entry before it was renamed and/or moved. Servers MUST include this optional field only when returning change notifications as a result of modifyDN operations. changeNumber is the change number [CHANGELOG] assigned by a server for the change. If a server supports an LDAP Change Log it SHOULD include this field.
@author
Apache Directory Project