rebind Context : Context « JNDI LDAP « Java

1. Java
2. JNDI LDAP
3. Context

rebind Context

  
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import java.util.StringTokenizer;

import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.NameNotFoundException;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;

/**
 * @author <a href="mailto:ovidiu@feodorov.com">Ovidiu Feodorov</a>
 * @version <tt>$Revision: 2868 $</tt>
 *
 * $Id: JNDIUtil.java 2868 2007-07-10 20:22:16Z timfox $
 */
public class JNDIUtil
{
  /**
   * Context.rebind() requires that all intermediate contexts and the target context (that named by
   * all but terminal atomic component of the name) must already exist, otherwise
   * NameNotFoundException is thrown. This method behaves similar to Context.rebind(), but creates
   * intermediate contexts, if necessary.
   */
  public static void rebind(Context c, String jndiName, Object o) throws NamingException
  {
     Context context = c;
     String name = jndiName;

     int idx = jndiName.lastIndexOf('/');
     if (idx != -1)
     {
        context = createContext(c, jndiName.substring(0, idx));
        name = jndiName.substring(idx + 1);
     }
     boolean failed=false;
     try
     {
        context.rebind(name,o);
     }
     catch (Exception ignored)
     {
        failed=true;
     }
     if (failed)
     {
        context.bind(name, o);
     }
  }
   /**
    * Create a context path recursively.
    */
   public static Context createContext(Context c, String path) throws NamingException
   {
      Context crtContext = c;
      for(StringTokenizer st = new StringTokenizer(path, "/"); st.hasMoreTokens(); )
      {
         String tok = st.nextToken();

         try
         {
            Object o = crtContext.lookup(tok);
            if (!(o instanceof Context))
            {
               throw new NamingException("Path " + path + " overwrites and already bound object");
            }
            crtContext = (Context)o;
            continue;
         }
         catch(NameNotFoundException e)
         {
            // OK
         }
         crtContext = crtContext.createSubcontext(tok);
      }
      return crtContext;
   }

}

   
    
  

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