Examples of org.apache.tomcat.Context

org.apache.tomcat.Context

A Context is a Container that represents a servlet context, and therefore an individual web applicaiton, in the Tomcat servlet engine. It is therefore useful in almost every deploymentof Tomcat (even if a Connector attached to a web server (such as Apache) uses the web server's facilities to identify the appropriate Wrapper to handle this request. It also provides a convenient mechanism to use Interceptors that see every request processed by this particular web application.

The parent Container attached to a Context is generally a Host, but may be some other implementation, or may be omitted if it is not necessary.

The child containers attached to a Context are generally implementations of Wrapper (representing individual servlet definitions).

@author Craig R. McClanahan @version $Revision: 1.5 $ $Date: 2000/02/13 01:43:43 $

     *
     * @param uri Absolute URI of a resource on the server
     */
    public ServletContext getContext(String uri) {


  Context context = host.map(uri);
  if (context != null)
      return (context.getServletContext());
  else
      return (null);


    }


  // Return the appropriate Context for the specified URI
  if (uri.equals("/"))
      return (host.getRootContext());
  else {
      Context child = (Context) host.map(uri);
      if (child != null)
    return (child.getServletContext());
      else
    return (null);
  }


    }


  StandardHost host = (StandardHost) getContainer();


  // Select the Context to be used for this request
  String path = request.getRequest().getRequestURI();
  Context context = host.map(path);
  if (context == null) {
      response.getResponse().sendError
    (HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
     sm.getString("standardHost.noContext"));
      return;
  }


  // Ask this Context to process this request
  context.invoke(request, response);


    }

     * @param uri Request URI, which must start with a '/'
     */
    public Context map(String uri) {


  String path = uri;
  Context context = null;
  while (path.length() > 1) {
      context = (Context) findChild(path);
      if (context != null)
    break;
      path = path.substring(0, path.lastIndexOf("/"));

Examples of org.apache.tomcat.Context

Related Classes of org.apache.tomcat.Context