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From "Stefan Zoerner (JIRA)" <j...@apache.org>
Subject [jira] Created: (DIRSERVER-646) Replacing an unknown attribute with no values (deletion) causes an error
Date Tue, 13 Jun 2006 12:23:29 GMT
Replacing an unknown attribute with no values (deletion) causes an error
------------------------------------------------------------------------

         Key: DIRSERVER-646
         URL: http://issues.apache.org/jira/browse/DIRSERVER-646
     Project: Directory ApacheDS
        Type: Bug

    Versions: 1.0-RC3    
 Environment: ApacheDS 1.0 RC 3
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_04-b05)
Microsoft Windows XP version 5.1 Service Pack 1
    Reporter: Stefan Zoerner


I am not sure, whether we have implemented the following right: RFC 2251 says in chapter 4.6.
(Modify Operation) the following about replace modification items:

"replace: replace all existing values of the given attribute with the new values listed, creating
the attribute if it did not already exist. A replace with no value will delete the entire
attribute if it exists, and is ignored if the attribute does not exist."

The problem I have found has to do with the second part. To make it more concrete, here is
my example entry:

dn: cn=Kate Bush,dc=example,dc=com
cn: Kate Bush
objectclass: top
objectclass: person
sn: Bush

If I apply the following modification to it (replace with no value)

dn: cn=Kate Bush,dc=example,dc=com
changetype: modify
replace: description
-

i.e.

$ ldapmodify -h localhost -p 10389 -D "uid=admin,ou=system" -w ****** -f replaceDescription.ldif
modifying entry cn=Kate Bush,dc=example,dc=com
$

ApacheDS works as expected and described in the RFC above: Nothing happens (especially no
error).  

If I use an attribute which is not known to the server, e.g.

dn: cn=Kate Bush,dc=example,dc=com
changetype: modify
replace: numberOfOctaves
-

The following happens

$ ldapmodify -h localhost -p 10389 -D "uid=admin,ou=system" -w ****** -f replaceOctaves.ldif
modifying entry cn=Kate Bush,dc=example,dc=com
ldap_modify: Undefined attribute type
ldap_modify: additional info: failed to modify entry cn=Kate Bush,dc=example,dc=com
$

I am not sure, whether the correct behavior is to ignore the replace modification here. But
I assume it (what does "is ignored if the attribute does not exist" exactly mean in the RFC?).
Sun Java System Directory Server 5.2. for instance does not throw an error in this situation.


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