CommandInfo.java 文件源码

/**
 * Returns the instantiated bean.
 * If the bean implements <code>CommandObject</code>, its
 * <code>setCommandContext</code> method will be called.
 * @param dh the data handler describing the command data
 * @param loader the class loader used to instantiate the bean
 */
public Object getCommandObject(DataHandler dh, ClassLoader loader)
  throws IOException, ClassNotFoundException
{
  Object object = Beans.instantiate(loader, className);
  if (object != null)
    {
      if (object instanceof CommandObject)
        {
          CommandObject command = (CommandObject)object;
          command.setCommandContext(verb, dh);
        }
      else if (dh != null && (object instanceof Externalizable))
        {
          InputStream in = dh.getInputStream();
          if (in != null)
            {
              Externalizable externalizable = (Externalizable)object;
              externalizable.readExternal(new ObjectInputStream(in));
            }
        }
    }
  return object;
}