Re: map custom attribute to another non custom attribute

["matthew sporleder" <msporleder@gmail.com>]

On 1/19/07, P. Martinez <martinezino@googlemail.com> wrote:
> Hello List,
>
> before i start, i am very new to directory
> services, therefore please be patient to
> me. I am with myself ;)
>
> I am writing an custom schema - and thought
> about a way to mapping attributes.
>
> attributeType ( OIDXXX NAME ( 'cn' 'commonName' )
>                  SUP name )
>
> Here we have two ways to query for entries - cn
> and commonName, right.
>
> My question: Is is possible to construct a
> schema that maps attributes to another
> attribute of a different objectclass/schema.
>
> Why? - Lets say an application ask for
> "unordinaryattributeName". Now i want to
> map it to cn transparently. So i need only
> to  manipulate cn fields etc.
>
> This idea comes to me as a flash of genius.
> But i hope that it is quite old and therefore
> possible.

Although this might be possible, (I'm not sure how many NAME's you're
allowed in a schema), openldap provides mechanisms to do this already.
And you wouldn't have to hijack namespace, or get into other nasty
things like that.

See slapo-rwm(5)
---
DESCRIPTION
      The  rwm overlay to slapd(8) performs basic DN/data rewrite and object-
      Class/attributeType mapping.  Its usage is mostly intended  to  provide
      virtual views of existing data either remotely, in conjunction with the
      proxy backend described in slapd-ldap(5), or  locally,  in  conjunction
      with the relay backend described in slapd-relay(5).