MemoryNamingEnumeration.java

/*
 * Copyright (C) The Spice Group. All rights reserved.
 *
 * This software is published under the terms of the Spice
 * Software License version 1.1, a copy of which has been included
 * with this distribution in the LICENSE.txt file.
 */
package org.realityforge.spice.jndikit.memory;

import java.util.Hashtable;
import java.util.Iterator;
import java.util.NoSuchElementException;
import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.NameClassPair;
import javax.naming.NamingException;
import org.realityforge.spice.jndikit.AbstractNamingEnumeration;
import org.realityforge.spice.jndikit.Namespace;

/**
 * Class for building NamingEnumerations.
 */
final class MemoryNamingEnumeration
  extends AbstractNamingEnumeration<Object>
{
  protected Hashtable<String, Object> m_bindings;
  protected Iterator m_names;
  protected boolean m_returnBindings;

  public MemoryNamingEnumeration( final Context owner,
                                  final Namespace namespace,
                                  final Hashtable<String, Object> bindings,
                                  final boolean returnBindings )
  {
    super( owner, namespace );
    m_returnBindings = returnBindings;
    m_bindings = bindings;
    m_names = m_bindings.keySet().iterator();
  }

  public boolean hasMoreElements()
  {
    return m_names.hasNext();
  }

  public Object next()
    throws NamingException
  {
    if ( !hasMore() )
    {
      throw new NoSuchElementException();
    }

    final String name = (String) m_names.next();
    Object object = m_bindings.get( name );

    if ( !m_returnBindings )
    {
      return new NameClassPair( name, object.getClass().getName() );
    }
    else
    {
      return new Binding( name, resolve( name, object ) );
    }
  }

  public void close()
  {
    super.close();
    m_bindings = null;
  }
}