[ApacheDS] How to register a new AttributeType within an interceptor's startup?

[Alan Hazelton]

I have written an interceptor that makes use of a custom AttributeType
and it works fine when I manually import that AttributeType via an ldif
import.  I want to make my interceptor more robust by automatically
registering the AttributeType on startup if it is not yet defined.  I
tried the code below but I get a
"javax.naming.ServiceUnavailableException: Directory service is not
started." error when I add the entry.  What is the correct way to add a
new AttributeType within an interceptor?
 
-Alan
 
[called from the interceptor's init() method]
private void registerEntryDNAttributeType(DirectoryService
directoryService)
{
  try
    {
      LdapDN entryDN = new
LdapDN("m-oid=2.16.840.1.113730.3.1.602,ou=attributeTypes,cn=other,ou=sc
hema");
      ServerEntry serverEntry = directoryService.newEntry(entryDN);
      serverEntry.add("m-name", ENTRY_DN_NAME);
      serverEntry.add("m-description", "Sun ONE defined virtual
attribute type");
      serverEntry.add("m-equality", "2.5.13.1");
      serverEntry.add("m-syntax", "1.3.6.1.4.1.1466.115.121.1.12");
      serverEntry.add("m-singleValue", "true"); 
      serverEntry.add("m-usage", "DSA_OPERATION");
      directoryService.getAdminSession().add(serverEntry);
    }
    catch (Exception e)
    {
       logger.error("Failed adding entryDN attribute type", e); 
    }
}