package uk.ac.ebi.intenz.webapp.controller;
   
   import javax.servlet.ServletException;
   import javax.servlet.RequestDispatcher;
   import javax.servlet.ServletContext;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
   import java.io.IOException;
   
  /**
   * All commands of this type do not need a connection to the database.
   *
   * @author Michael Darsow
   * @version 0.9 - 21-July-2003
   */
  public abstract class NonDatabaseCommand extends Command {
  
    protected ServletContext context;
  
    protected HttpServletRequest request;
  
    protected HttpServletResponse response;
  
    /**
     * Initialises the attributes which will be used to extract information for the command execution.
     *
     * @param context The servlet context.
     * @param request The request object.
     * @param response The response object.
     */
    public void init(ServletContext context, HttpServletRequest request, HttpServletResponse response) {
      this.context = context;
      this.request = request;
      this.response = response;
    }
  
    /**
     * Forwards to the given target.
     *
     * @param target A valid URI.
     * @throws ServletException
     * @throws IOException
     */
    protected void forward(String target) throws ServletException, IOException {
      RequestDispatcher dispatcher = context.getRequestDispatcher(target);
      dispatcher.forward(request, response);
    }
  }