Re: deleting values from multivalued attribute

[Hugo Monteiro <hugo.monteiro@fct.unl.pt>]

On 03/25/2011 04:00 PM, Emmanuel Lecharny wrote:
> On 3/25/11 4:44 PM, Hugo Monteiro wrote:
> > On 03/25/2011 03:00 PM, Emmanuel Lecharny wrote:
> > > On 3/25/11 3:51 PM, Hugo Monteiro wrote:
> > > > Hello list,
> > > >
> > > > is it possible to perform the deletion of only a certain number of 
> > > > values, from a multivalued attribute, without having to perform 
> > > > full deletion and then adding the ones we'd like to keep?
> > > Of course.
> > >
> > > http://download.oracle.com/docs/cd/E19316-01/820-2763/bcacx/index.html
> > >
> > > (and this is just one example. See "Deleting an Attribute Value")
> >
> > Hello Emmanuel, et al,
> >
> > Indeed. I was using the ldapmodify man page as reference and it 
> > doesn't mention the option of providing the value we wish to delete.
> >
> > I wonder if it's also possible to use the same approach but for value 
> > modification. In brief evaluation, my guess is no, since the ldif 
> > syntax doesn't provide any way to distinct between the value to be 
> > replaced and the one to replace with.
>
> I don't understand your question. The 'modify' operation applied on an 
> AT allows you to do whatever you want, assuming you give it the right 
> operation to apply. 'replace' will discard all the values and replace 
> them by the new values. Otherwise, 'delete' deletes some specific 
> values, and 'add' adds the ones you provide.
>
> Isn't it enough ?


Aye, i understand it can be done through delete/add. My wondering was 
about the possibility to perform the change using a single operation.

> > In this case one would possibly have something like
> >
> > uid=user,ou=users,dc=example,dc=com
> > changetype: modify
> > replace: mailAlternateAddress
> > mailAlternateAddress: oldmail@example.com
> > mailAlternateAddress: newmail@example.com
> > -
> >
> >
> > But like i said, it doesn't make much sense.
> It does. What the ldif snippet you gave just do is to replace all 
> 'mailAlternateAddress' values by the two values you provided. Isn't it 
> what you wanted to do ?
>
> Otherwise, assuming you want to replace the oldmail@ value by the 
> newmail@ value, the correct ldif would be :
> uid=user,ou=users,dc=example,dc=com
> changetype: modify
> delete: mailAlternateAddress
> mailAlternateAddress: oldmail@example.com
> -
> add: mailAlternateAddress
> mailAlternateAddress: newmail@example.com
> -

Yes, that's what was intended.

> Check the LDIF RFC (http://www.ietf.org/rfc/rfc2849.txt), you have 
> clear samples at the end.

Thanks for the pointer. I have visited the rfc before but didn't go 
through the end of the document.

Best Regards,

Hugo Monteiro.

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Hugo Monteiro
Email	 : hugo.monteiro@fct.unl.pt
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