Hi All
 How do I search for members of a particular group in my LDAP directory?? I am doing it this way:

Hashtable env = new Hashtable(11);
env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=carreker.com");

// Create the initial directory context
ctx = new InitialDirContext(env);
BasicAttributes basicAttrs = new BasicAttributes("uniquemembers",null);
String name= "cn=" + groupName + ", ou=Groups";
NamingEnumeration grpEnum = ctx.search(name,basicAttrs);


  This query doesnt return me anything. What am i doing wrong??

Any help is appreciated.
Thanks in advance

>  How do I search for members of a particular group in my LDAP directory?? I am doing it this way:
>
> Hashtable env = new Hashtable(11);
> env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
> env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=carreker.com");
>
> // Create the initial directory context
> ctx = new InitialDirContext(env);
> BasicAttributes basicAttrs = new BasicAttributes("uniquemembers",null);
> String name= "cn=" + groupName + ", ou=Groups";
> NamingEnumeration grpEnum = ctx.search(name,basicAttrs);
>
>
>   This query doesnt return me anything. What am i doing wrong??
>
> Any help is appreciated.
> Thanks in advance

Hi,

Below follows a piece of code. It might not be perfect but it's a working example. It also checks for group1 > group2 > ... > groupN > member_of relationships.

  private Collection getGroups(Attributes atr, Hashtable fields, InitialDirContext initialContext){
    HashSet result = null;
    try{
      if(atr.get(LDAPConnectionFactory.MEMBER_OF)!=null){
        result = new HashSet();
        for(Enumeration e = atr.get(LDAPConnectionFactory.MEMBER_OF).getAll(); e.hasMoreElements();){
          String groupName = (String)e.nextElement();
          result.add(groupName);
          Collection subGroups = getGroups(groupName, fields, initialContext);
          if(subGroups!=null){
            result.addAll(subGroups);
          }
        }
      }
    }catch(Exception e){
      e.printStackTrace();
    }
    return result;
  }

  private Collection getGroups(String groupName, Hashtable fields, InitialDirContext initialContext) throws NamingException{
    HashSet result = null;
    String filter = "("+(String)fields.get(LDAPConnectionFactory.DISTINGUISHED_NAME)+"="+groupName+")";
    NamingEnumeration answer = initialContext.search(
         (String)initialContext.getEnvironment().get(LDAPConnectionFactory.SCHEMA),
         filter,new SearchControls(SearchControls.SUBTREE_SCOPE,0,0,null,false,false)
      );

    for(Enumeration e = answer;e.hasMoreElements();){
      SearchResult sr = (SearchResult)e.nextElement();
      if(sr.getAttributes().get(LDAPConnectionFactory.MEMBER_OF)!=null){
        result = new HashSet();
        for(Enumeration egr = sr.getAttributes().get(LDAPConnectionFactory.MEMBER_OF).getAll(); egr.hasMoreElements();){
          String egroupName = (String)egr.nextElement();
          result.add(egroupName);
          Collection subGroups = getGroups(egroupName, fields, initialContext);
          if(subGroups != null){
            result.addAll(subGroups);
          }
        }
      }
    }
    return result;
  }

Hope this helps

Kalin

Thanks Kalin. Whats LDAPConnectionFactory.MEMBER_OF ??? My compiler throws a class not found exception for LDAPConnectionFactory. I am using plain jndi.jar from Sun.

Thanks

>
> Thanks

These are simply externalized strings:

  public static final String MEMBER_OF = "memberOf";
  public static final String DISTINGUISHED_NAME = "distinguishedName";
  public static final String SCHEMA = "schema";