Examples of org.apache.struts.digester.Digester

org.apache.struts.digester.Digester

A Digester processes an XML input stream by matching a series of element nesting patterns to execute Rules that have been added prior to the start of parsing. This package was inspired by the XmlMapper class that was part of Tomcat 3.0 and 3.1, but is organized somewhat differently.

See the Digester Developer Guide for more information.

IMPLEMENTATION NOTE - A single Digester instance may only be used within the context of a single thread at a time, and a call to parse() must be completed before another can be initiated even from the same thread.
@author Craig McClanahan @version $Revision: 1.19.2.1 $ $Date: 2001/06/11 19:54:48 $

     * file format.
     */
    protected Digester initDigesterOld(int detail) {


  // Initialize a new Digester instance
  Digester digester = new Digester();
  digester.push(this);
  digester.setDebug(detail);
  digester.setValidating(false);


  // Configure the processing rules
  digester.addObjectCreate("action-mappings/action", mappingClass,
         "className");
  digester.addSetProperties("action-mappings/action");
  digester.addSetNext("action-mappings/action", "addMapping",
          "org.apache.struts.action.ActionMapping");
  digester.addObjectCreate("action-mappings/action/forward",
         forwardClass, "className");
  digester.addSetProperties("action-mappings/action/forward");
  digester.addSetNext("action-mappings/action/forward", "addForward",
          "org.apache.struts.action.ActionForward");
  digester.addSetProperty("action-mappings/action/forward/property",
        "name", "value");
  digester.addSetProperty("action-mappings/action/property",
        "name", "value");
  digester.addObjectCreate("action-mappings/forward",
         forwardClass, "className");
  digester.addSetProperties("action-mappings/forward");
  digester.addSetNext("action-mappings/forward", "addForward",
          "org.apache.struts.action.ActionForward");
  digester.addSetProperty("action-mappings/forward/property",
        "name", "value");


  return (digester);


    }

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  if (input == null)
      throw new UnavailableException
    (internal.getMessage("configMissing", config));


  // Build a digester to process our configuration resource
  Digester digester = null;
  if (validate)
      digester = initDigester(detail);
  else
      digester = initDigesterOld(detail);


  // Parse the input stream to configure our mappings
  try {
            formBeans.setFast(false);
            forwards.setFast(false);
            mappings.setFast(false);
      digester.parse(input);
            mappings.setFast(true);
            forwards.setFast(true);
            formBeans.setFast(true);
  } catch (SAXException e) {
      throw new ServletException

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        // Remember our servlet name
        this.servletName = getServletConfig().getServletName();


        // Prepare a Digester to scan the web application deployment descriptor
        Digester digester = new Digester();
        digester.push(this);
        digester.setDebug(this.debug);
        digester.setValidating(false);


  // Register our local copy of the DTDs that we can find
        for (int i = 0; i < registrations.length; i += 2) {
            URL url = this.getClass().getResource(registrations[i+1]);
            if (url != null)
                digester.register(registrations[i], url.toString());
        }


        // Configure the processing rules that we need
        digester.addCallMethod("web-app/servlet-mapping",
                               "addServletMapping", 2);
        digester.addCallParam("web-app/servlet-mapping/servlet-name", 0);
        digester.addCallParam("web-app/servlet-mapping/url-pattern", 1);


        // Process the web application deployment descriptor
        InputStream input= null;
        try {
            input =
                getServletContext().getResourceAsStream("/WEB-INF/web.xml");
            digester.parse(input);
        } catch (Throwable e) {
            log(internal.getMessage("configWebXml"), e);
        } finally {
            if (input != null)
                input = null;

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  if (input == null)
      throw new UnavailableException
    (internal.getMessage("configMissing", config));


  // Build a digester to process our configuration resource
  Digester digester = new Digester();
  digester.push(this);
  digester.setDebug(detail);
  digester.setValidating(false);
  digester.addObjectCreate("action-mappings/action", mappingClass,
         "className");
  digester.addSetProperties("action-mappings/action");
  digester.addSetNext("action-mappings/action", "addMapping",
          "org.apache.struts.action.ActionMapping");
  digester.addObjectCreate("action-mappings/action/forward",
         forwardClass, "className");
  digester.addSetProperties("action-mappings/action/forward");
  digester.addSetNext("action-mappings/action/forward", "addForward",
          "org.apache.struts.action.ActionForward");
  digester.addSetProperty("action-mappings/action/forward/property",
        "name", "value");
  digester.addSetProperty("action-mappings/action/property",
        "name", "value");
  digester.addObjectCreate("action-mappings/forward",
         forwardClass, "className");
  digester.addSetProperties("action-mappings/forward");
  digester.addSetNext("action-mappings/forward", "addForward",
          "org.apache.struts.action.ActionForward");
  digester.addSetProperty("action-mappings/forward/property",
        "name", "value");


  // Parse the input stream to configure our mappings
  try {
      digester.parse(input);
      input.close();
  } catch (SAXException e) {
      throw new ServletException
    (internal.getMessage("configParse", config), e);
  }

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            return;
        }
  BufferedInputStream bis = new BufferedInputStream(is);


  // Construct a digester to use for parsing
  Digester digester = new Digester();
  digester.push(this);
  digester.setDebug(debug);
  digester.setValidating(false);
  digester.addObjectCreate("database/user",
         "org.apache.struts.webapp.example.User");
  digester.addSetProperties("database/user");
  digester.addSetNext("database/user", "addUser");
  digester.addObjectCreate("database/user/subscription",
         "org.apache.struts.webapp.example.Subscription");
  digester.addSetProperties("database/user/subscription");
  digester.addSetTop("database/user/subscription", "setUser");


  // Parse the input stream to initialize our database
  digester.parse(bis);
  bis.close();


    }

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