How to add attributes to user class of ADAM

more at: http://www.developerland.com/CSharpGeneral/ActiveDirectory/124.aspx

You can also register the object and attribute ID's so no one else can reuse them. For more information go to the MSDN article Obtaining an Object Identifier from Microsoft [^]. Next we assign the attribute type "HomeURL" to the new object type "UserProperties". This unfortunately can not be done through ADAM ADSI Edit. The logical choice would be to open the properties of the "UserProperties" object type and then add the attribute to the "allowedProperties" property. But this will give you the following error message "Modification of a constructed attribute is not allowed". This needs to be done through the "ADAM Schema" MMC snap-in. Go to "Start | Run" and type in "mmc /a". This opens an empty Management Console and allows you to add different snap-ins. Go to the menu "File | Add/Remove Snap-in", click on the add button and select the "ADAM Schema" snap-in. When done this shows you an entry called "ADAM Schema" in the list on the left side. Right click on it and select "Change ADAM Server" from the popup menu. Enter the ADAM server and the port address where the ADAM instance is running on, for example "localhost" and "389". When done you see two entries in the list – "Classes" and "Attributes". You can quite actually also create object and attribute types through this snap-in. You enter the same values but the user interface is different.

Now find your object type under "Classes", right click on it and select properties. Go to the Attributes tab, click the Add button, select the "HomeURL" attribute and click ok. You can add as many attributes to the optional attributes list as required but you can not add mandatory attributes. If you need mandatory attributes then create the object type in the "ADAM Schema" snap-in and select them while creating the object type itself. When done click ok. Click on the object type and see on the right side all the attributes belonging to it. You see if they are system attributes, whether it is mandatory or optional and also which class they have been added to. So this view shows you also all the inherited attributes. You see now also the attribute you just added. Going back to ADSI Edit and looking at the property "allowedAttributes" of the object type UserProperties does unfortunately not show this new attribute we just added. This shortcoming in ADSI Edit can unfortunately be rather inconvenient!


http://erlend.oftedal.no/blog/?blogid=6