Examples of org.apache.commons.digester.Digester

org.apache.commons.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.

IMPLEMENTATION NOTE - A bug in Xerces 2.0.2 prevents the support of XML schema. You need Xerces 2.1/2.3 and up to make this class working with XML schema

        // 
        // This test doesn't really belong in this class. If a separate test 
        // case class is created for PluginRules, then this method should be
        // moved there.


        Digester digester = new Digester();
        PluginRules rc = new PluginRules();
        digester.setRules(rc);
        
        PluginCreateRule pcr = new PluginCreateRule(Widget.class);
        digester.addRule("/root/widget", pcr);
        digester.addSetNext("/root/widget", "addChild");


        Container root = new Container();
        digester.push(root);
        
        try {
            digester.parse(
                TestAll.getInputStream(this, "test1.xml"));
        }
        catch(Exception e) {
            throw e;
        }

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                    DIGESTER_DTD_PATH + "\"");
        }
        parser.setDigesterRulesDTD(dtdURL.toString());
        parser.setTarget(digester);


        Digester rulesDigester = new Digester();
        rulesDigester.addRuleSet(parser);
        rulesDigester.push(parser);


        try {
            rulesDigester.parse(xmlRules.openStream());
        } catch (Exception ex) {
            throw new XmlLoadException(ex);
        }
    }

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     * @param rulesXml URL to the XML file defining the digester rules
     * @return a new Digester initialized with the rules
     */
    public static Digester createDigester(URL rulesXml) {
        RuleSet ruleSet = new FromXmlRuleSet(rulesXml);
        Digester digester = new Digester();
        digester.addRuleSet(ruleSet);
        return digester;
    }

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     * @return an Object which is the root of the network of Java objects
     * created by digesting fileURL
     */
    public static Object load(URL digesterRules, ClassLoader classLoader,
                              InputStream input) throws IOException, SAXException, DigesterLoadingException {
        Digester digester = createDigester(digesterRules);
        digester.setClassLoader(classLoader);
        try {
            return digester.parse(input);
        } catch (XmlLoadException ex) {
            // This is a runtime exception that can be thrown by
            // FromXmlRuleSet#addRuleInstances, which is called by the Digester
            // before it parses the file.
            throw new DigesterLoadingException(ex.getMessage(), ex);

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     * created by digesting fileURL
     */
    public static Object load(URL digesterRules, ClassLoader classLoader,
                              InputStream input, Object rootObject) throws IOException, SAXException,
            DigesterLoadingException {
        Digester digester = createDigester(digesterRules);
        digester.setClassLoader(classLoader);
        digester.push(rootObject);
        try {
            return digester.parse(input);
        } catch (XmlLoadException ex) {
            // This is a runtime exception that can be thrown by
            // FromXmlRuleSet#addRuleInstances, which is called by the Digester
            // before it parses the file.
            throw new DigesterLoadingException(ex.getMessage(), ex);

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            + resourceConfig.toExternalForm());
      }


      InputStream in = URLToStreamHelper.urlToStream(resourceConfig);
      try {
        Digester digester = new Digester();
        digester.setValidating(false);
        digester.setEntityResolver(new EntityResolver() {
          // Dummi resolver - alvays do nothing
          public InputSource resolveEntity(String publicId,
              String systemId) throws SAXException, IOException {
            return new InputSource(new StringReader(""));
          }
        });
        digester.setNamespaceAware(false);
        digester.setUseContextClassLoader(true);
        digester.push(this);
        digester.addObjectCreate("resource-config/resource", "class",
            JarResource.class);
        digester.addObjectCreate("resource-config/resource/renderer",
            "class", HTMLRenderer.class);
        digester.addCallMethod(
            "resource-config/resource/renderer/content-type",
            "setContentType", 0);
        digester.addSetNext("resource-config/resource/renderer",
            "setRenderer", ResourceRenderer.class.getName());
        digester.addCallMethod("resource-config/resource/name",
            "setKey", 0);
        digester.addCallMethod("resource-config/resource/path",
            "setPath", 0);
        digester.addCallMethod("resource-config/resource/cacheable",
            "setCacheable", 0);
        digester.addCallMethod(
            "resource-config/resource/session-aware",
            "setSessionAware", 0);
        digester.addCallMethod("resource-config/resource/property",
            "setProperty", 2);
        digester.addCallParam("resource-config/resource/property/name",
            0);
        digester.addCallParam(
            "resource-config/resource/property/value", 1);
        digester.addCallMethod("resource-config/resource/content-type",
            "setContentType", 0);
        digester.addSetNext("resource-config/resource", "addResource",
            InternetResource.class.getName());
        digester.parse(in);
      } finally {
        in.close();
      }
    } catch (IOException e) {
      throw new FacesException(e);

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  private static final ExcelSheet BLANK_SHEET = new ExcelSheet();
  
  @SuppressWarnings("unchecked")
  public void setConfig(String... configurations){
    for(String config: configurations){
      Digester digester = DigesterLoader.createDigester(
          new InputSource(Thread.currentThread().getContextClassLoader()
              .getResourceAsStream(RULE_FILE)));
      digester.setValidating(false);
      try {
        List<ExcelSheet> list =
          (List<ExcelSheet>)digester.parse(Thread.currentThread().getContextClassLoader().getResourceAsStream(config));
        for(ExcelSheet es: list)
          sheetDefinitions.put(es.getName(), es);
      } catch (IOException e) {
        e.printStackTrace();
        throw new RuntimeException("Read excel config failed.");

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            log("Cannot load configuration file " + file.getAbsolutePath());
            return;
        }


        // Load the contents of our configuration file
        Digester digester = new Digester();
        digester.setValidating(false);
        digester.addRuleSet(new MemoryRuleSet());
        try {
            digester.push(this);
            digester.parse(file);
        } catch (Exception e) {
            log("Error processing configuration file " +
                file.getAbsolutePath(), e);
            return;
        } finally {
            digester.push(null);
        }


    }

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        InputStream stream = null;
        String contextPath = null;
        try {
            URL config = new URL("file", null, configFile.getCanonicalPath());
            stream = config.openStream();
            Digester digester = createDigester();
            digester.clear();
            digester.push(this);
            digester.parse(stream);
            stream.close();
            stream = null;
            if (context !=null) {
              contextPath = context.getPath();
            }
        } catch (Exception e) {
          log( "Parse exception :", e );
          return null;
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (Throwable t) {
                    ;
                }
            }
          digester.push(null);
            context = null;
        }
        return contextPath;
    }

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     * context configuration descriptor for an application.
     */
    protected Digester createDigester() {


        if (digester == null) {
            digester = new Digester();
            digester.setValidating(false);
            // Add a substitutor to resolve system properties
            enableDigesterSubstitutor(digester);
            digester.addRuleSet(new ContextRuleSet(""));
            digester.addRuleSet(new NamingRuleSet("Context/"));

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