Querying Attribute Type Definitions Problem

I am trying to query the definition of an attribute type using one of the attribute type's aliases. For example, given:

attributetype ( 2.5.4.3 NAME ( 'cn' 'commonName' ) DESC 'RFC2256: common name(s) for which the entity is known by' SUP name )

I am using Java's naming API to query the definition, and getting an exception saying the attribute type doesn't exist. Example:

DirContext cnSchema = (DirContext)schema.lookup("AttributeDefinition/commonName");

I appreciate that this is not a Java list - I am trying to determine if what I am seeing is consistent with one of the many LDAP RFC's (i.e. I must use the actual attribute type's name to get the definition). If not I'll peddle my query elsewhere :)

Thanks,

Kevin Hardiman