Unable to Retrieve Attributes from LDAP Server

Question

I have a problem. I was wondering if anyone can assist me. I am new to LDAP servers and JNDI. I cannot retrieve any attributes from the users listed in my data entry. Any assistance would be greatly appreciated! Thanks.
I created an entry in the LDAP server that looks like this:
�o=somedn�
|
�ou=people, o=somedn�
The �ou=people, o=somedn� entry contains fictitious users. The LDAP server is connected to a MySQL database. When I write Java code to read the attributes of a given user whose fullname (cn) is �Vinny Luigi�, as listed in the database, I receive an error that starts with the following:
javax.naming.NameNotFoundException: [LDAP: error code 32 - No Such Object]; remaining name 'cn=Vinny Luigi,ou=people'
The code I used is based on the Sun JNDI tutorial. Sun�s code is at http://java.sun.com/products/jndi/tutorial/basics/directory/src/GetattrsAll.java. My version of the code is below:
* @(#)GetattrsAll.java     1.5 00/04/28
* Copyright 1997, 1998, 1999 Sun Microsystems, Inc. All Rights
* Reserved.
* Sun grants you ("Licensee") a non-exclusive, royalty free,
* license to use, modify and redistribute this software in source and
* binary code form, provided that i) this copyright notice and license
* appear on all copies of the software; and ii) Licensee does not
* utilize the software in a manner which is disparaging to Sun.
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE
* FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING,
* MODIFYING OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN
* NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
* REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT
* OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS
* BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
* This software is not designed or intended for use in on-line
* control of aircraft, air traffic, aircraft navigation or aircraft
* communications; or in the design, construction, operation or
* maintenance of any nuclear facility. Licensee represents and warrants
* that it will not use or redistribute the Software for such purposes.
import javax.naming.*;
import javax.naming.directory.*;
import java.util.Hashtable;
* Demonstrates how to retrieve all attributes of a named object.
* usage: java GetattrsAll
class GetattrsAll
     static void printAttrs(Attributes attrs)
          if (attrs == null)
               System.out.println("No attributes");
          else
               /* Print each attribute */
               try
                    for (NamingEnumeration ae = attrs.getAll(); ae.hasMore();)
                         Attribute attr = (Attribute) ae.next();
                         System.out.println("attribute: " + attr.getID());
                         /* print each value */
                         for (NamingEnumeration e = attr.getAll(); e.hasMore(); System.out.println("value: " + e.next()) )
               } catch (NamingException e) {
                    e.printStackTrace();
     public static void main(String[] args) {
          // Set up the environment for creating the initial context
          Hashtable env = new Hashtable(100);
          env.put(Context.INITIAL_CONTEXT_FACTORY,
                    "com.sun.jndi.ldap.LdapCtxFactory");
          env.put(Context.PROVIDER_URL, "ldap://localhost:10389/o=somedn");
          try {
               // Create the initial context
               DirContext ctx = new InitialDirContext(env);
               // Get all the attributes of named object
               System.out.println("About to use ctx.getAttributes()");
               Attributes answer = ctx.getAttributes("cn=Vinny Luigi,ou=people");
               // Print the answer
               printAttrs(answer);
               // Close the context when we're done
               ctx.close();
          } catch (Exception e) {
               e.printStackTrace();
The primary key of the database is id_pk. Below is a copy of the mapping.xml file which maps the LDAP server entry to the database:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapping PUBLIC "-//Penrose/DTD Mapping 1.2//EN" "http://penrose.safehaus.org/dtd/mapping.dtd">
<mapping>
<entry dn="o=somedn">
<oc>organization</oc>
<oc>top</oc>
<at name="o" rdn="true">
<constant>somedn</constant>
</at>
<aci>
<permission>rs</permission>
</aci>
</entry>
<entry dn="ou=people,o=somedn">
<oc>inetOrgPerson</oc>
<oc>organizationalPerson</oc>
<oc>organizationalUnit</oc>
<oc>person</oc>
<oc>top</oc>
<at name="cn">
<constant>"fullname"</constant>
</at>
<at name="ou" rdn="true">
<constant>people</constant>
</at>
<at name="sn">
<constant>"lastname"</constant>
</at>
</entry>
<entry dn="id_pk=...,ou=people,o=somedn">
<oc>inetOrgPerson</oc>
<oc>organizationalPerson</oc>
<oc>person</oc>
<oc>top</oc>
<at name="Position_">
<variable>usertable9.Position_</variable>
</at>
<at name="id_pk" rdn="true">
<variable>usertable9.id_pk</variable>
</at>
<at name="fullname">
<variable>usertable9.fullname</variable>
</at>
<at name="lastname">
<variable>usertable9.lastname</variable>
</at>
<at name="cn">
<variable>usertable9.fullname</variable>
</at>
<at name="sn">
<variable>usertable9.lastname</variable>
</at>
<source name="usertable9">
<source-name>usertable9</source-name>
<field name="Position_">
<variable>Position_</variable>
</field>
<field name="id_pk">
<variable>id_pk</variable>
</field>
<field name="fullname">
<variable>cn</variable>
</field>
<field name="lastname">
<variable>sn</variable>
</field>
</source>
</entry>
</mapping>
Thanks.

Answer 1

The complete name (Distinguished Name) of the user you're searching is 'cn=Vinny Luigi,ou=people,o=somedn'.
Regards,
Ludovic.