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From "Alex Karasulu" <>
Subject Re: [Schema] How do I write a new ObjectClass to ApacheDS
Date Thu, 29 Mar 2007 00:37:39 GMT
Hi Ole,

Looks like you got some good advice already.  Let me just add one more
while you're looking into creating a schema.  Sometimes you'll find that the

attributeTypes and objectClasses you're looking for are already defined in

For example for users you might want to take a look at something like
inetOrgPerson etc.

Second I suppose you're thinking of staying bleeding edge by using
1.5rather than using
1.0.  I'd recommend this.  And if so then merely adding the schema
description entry for
the objectClass in the ou=schema partition in the appropriate place should
work.  The schema
is dynamic in 1.5 but I guess Emmanuel and Stephan already pointed this out.

I will try to back read this thread.  As you can imagine I have a lot to
catch up on since
I've been on vacation fishing all week :D.  Yeah I don't miss LDAP he he.


On 3/28/07, Ole Ersoy <> wrote:
> Hey Guys,
> I'm in the middle of designing the DAS and
> decided that I can probably make it way more efficient
> if I create an ObjectClass per Java Class that I want to write to
> ADS.
> So how do I programmatically create a ObjectClass and store it
> in ApacheDS?
> Do we have a description somewhere or is this a standard JNDI thing?
> Here's a little further elaboration on what I want to do for those
> interested.
> Keep in mind this is just an example.  The Class User could be any java
> class used in a model.
> I have a Java Class >> User
> The Class User has String members [firstName, lastName, password]
> So I want to create a Structural ObjectClass in ApacheDS so that
> I can add it as an attribute to the DN where a User instance will be
> stored (The java object instance).
> If I were doing this in a relational database, I would create a table
> definition instead of a ObjectClass.
> So I'm looking for something like this:
> ObjectClass objectClass = LDAPSchemaFactory.createObjectClass();
> objectClass.setName("User");
> ObjectClassAttribute objectClassAttribute =
> LDAPSchemaFactory.createObjectClassAttribute();
> objectClassAttribute.setName("firstName");
> objectClassAttribute.setType(LDAP_STRING_ATTRIBUTE_TYPE);
> Then I would do something like:
> ctx.storeObjectClass(objectClass);
> The objectClass can now be assigned as an attribute to an ADS entry,
> and if we were to look at all the ObjectClasses in ADS through JXPlorer
> or LDAP Studio,
> we would see the User ObjectClass in the list.
> Does that make sense?
> Thanks,
> - Ole

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