Examples of org.apache.tomcat.util.digester.Digester

org.apache.tomcat.util.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


    /**
     * Create the digester which will be used to parse context config files.
     */
    protected Digester createDigester() {
        Digester digester = new Digester();
        digester.setValidating(false);
        digester.addObjectCreate("Resource",
                "org.apache.catalina.deploy.ContextResource");
        digester.addRule("Resource", new SetAllPropertiesRule());
        return digester;
    }

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        digester.addRule("Resource", new SetAllPropertiesRule());
        return digester;
    }


    public void testNormalResource() throws IOException, SAXException {
        Digester digester = createDigester();
        String example = "<Resource auth=\"Container\" name=\"jdbc/Emp\" type=\"javax.sql.DataSource\"/>";
        StringReader reader = new StringReader(example);
        ContextResource resource = (ContextResource) digester.parse(reader);
        assertNotNull(resource);
        assertEquals("javax.sql.DataSource", resource.getType());
    }

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        assertNotNull(resource);
        assertEquals("javax.sql.DataSource", resource.getType());
    }


    public void testPropertyResouce() throws IOException, SAXException {
        Digester digester = createDigester();
        String example = "<Resource auth=\"Container\" name=\"mail/MailSession\" type=\"javax.mail.session\" mail.host=\"localhost\"/>";
        StringReader reader = new StringReader(example);
        ContextResource resource = (ContextResource) digester.parse(reader);
        assertNotNull(resource);
        assertEquals("localhost", resource.getProperty("mail.host"));
    }

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 *  
 */
public class StoreLoaderTest extends TestCase {


    public void testDigester() throws IOException, SAXException {
        Digester digester = StoreLoader.createDigester();
        String example = "<Registry name=\"Tomcat\" version=\"5.5.0\" encoding=\"UTF-8\" >"
                + " <Description "
                + "  tag=\"Server\""
                + "  standard=\"true\""
                + "  default=\"true\""
                + "  tagClass=\"org.apache.catalina.core.StandardServer\""
                + "  storeFactoryClass=\"org.apache.catalina.storeconfig.StandardServerSF\">"
                + " </Description>" + "</Registry>";
        StringReader reader = new StringReader(example);
        StoreRegistry registry = (StoreRegistry) digester.parse(reader);
        assertNotNull(registry);
        assertEquals("Tomcat", registry.getName());
        assertEquals("5.5.0", registry.getVersion());
        StoreDescription desc = registry.findDescription(StandardServer.class);
        assertNotNull(desc);

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     * Create and configure the Digester we will be using for setup mod_jk jk status page.
     */
    public static Digester createDigester() {
        long t1 = System.currentTimeMillis();
        // Initialize the digester
        Digester digester = new Digester();
        digester.setValidating(false);
        digester.setClassLoader(JkStatus.class.getClassLoader());


        // parse status
        digester.addObjectCreate("jk:status", "org.apache.jk.status.JkStatus",
                "className");
        digester.addSetProperties("jk:status");


        digester.addObjectCreate("jk:status/jk:server",
                "org.apache.jk.status.JkServer", "className");
        digester.addSetProperties("jk:status/jk:server");
        digester.addSetNext("jk:status/jk:server", "setServer",
                "org.apache.jk.status.JkServer");


        digester.addObjectCreate("jk:status/jk:software",
                "org.apache.jk.status.JkSoftware", "className");
        digester.addSetProperties("jk:status/jk:software");
        digester.addSetNext("jk:status/jk:software", "setSoftware",
                "org.apache.jk.status.JkSoftware");


        digester.addObjectCreate("jk:status/jk:result",
                "org.apache.jk.status.JkResult", "className");
        digester.addSetProperties("jk:status/jk:result");
        digester.addSetNext("jk:status/jk:result", "setResult",
                "org.apache.jk.status.JkResult");


        digester.addObjectCreate("jk:status/jk:balancers/jk:balancer",
                "org.apache.jk.status.JkBalancer", "className");
        digester.addSetProperties("jk:status/jk:balancers/jk:balancer");
        digester.addSetNext("jk:status/jk:balancers/jk:balancer",
                "addBalancer", "org.apache.jk.status.JkBalancer");


        digester.addObjectCreate(
                "jk:status/jk:balancers/jk:balancer/jk:member",
                "org.apache.jk.status.JkBalancerMember", "className");
        digester
                .addSetProperties("jk:status/jk:balancers/jk:balancer/jk:member");
        digester.addSetNext("jk:status/jk:balancers/jk:balancer/jk:member",
                "addBalancerMember", "org.apache.jk.status.JkBalancerMember");


        digester.addObjectCreate("jk:status/jk:balancers/jk:balancer/jk:map",
                "org.apache.jk.status.JkBalancerMapping", "className");
        digester.addSetProperties("jk:status/jk:balancers/jk:balancer/jk:map");
        digester.addSetNext("jk:status/jk:balancers/jk:balancer/jk:map",
                "addBalancerMapping", "org.apache.jk.status.JkBalancerMapping");


        long t2 = System.currentTimeMillis();
        if (log.isDebugEnabled())
            log.debug("Digester for apache mod_jk jkstatus page is created "

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        JkStatus status = null;


        try {
          // FIXME: use cmd show for older mod_jk versions
            hconn = openConnection(url + "?cmd=list&mime=xml", username, password);
            Digester digester = JkStatusParser.getDigester();
            synchronized (digester) {
                status = (JkStatus) digester.parse(hconn.getInputStream());
            }
        } catch (Throwable t) {
            throw new Exception(t);
        } finally {
            if (hconn != null) {

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    /**
     * Create the digester which will be used to parse context config files.
     */
    protected static Digester createDigester() {
        Digester digester = new Digester();
        digester.setValidating(false);
        // Add object creation rule
        digester.addObjectCreate("Context", "org.apache.catalina.core.StandardContext",
            "className");
        // Set the properties on that object (it doesn't matter if extra 
        // properties are set)
        digester.addSetProperties("Context");
        return (digester);
    }

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     * tld.
     */
    private static synchronized Digester createTldDigester(boolean validation,
            boolean blockExternal) {


        Digester digester;
        int cacheIndex = 0;
        if (validation) {
            cacheIndex += 1;
        }
        if (blockExternal) {
            cacheIndex += 2;
        }
        digester = tldDigesters[cacheIndex];
        if (digester == null) {
            digester = DigesterFactory.newDigester(validation,
                    true, new TldRuleSet(), blockExternal);
            digester.getParser();
            tldDigesters[cacheIndex] = digester;
        }
        return digester;
    }

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     * Create and configure the Digester we will be using for startup.
     */
    protected Digester createStartDigester() {
        long t1=System.currentTimeMillis();
        // Initialize the digester
        Digester digester = new Digester();
        digester.setValidating(false);
        digester.setRulesValidation(true);
        HashMap<Class, List<String>> fakeAttributes = new HashMap<Class, List<String>>();
        ArrayList<String> attrs = new ArrayList<String>();
        attrs.add("className");
        fakeAttributes.put(Object.class, attrs);
        digester.setFakeAttributes(fakeAttributes);
        digester.setClassLoader(StandardServer.class.getClassLoader());


        // Configure the actions we will be using
        digester.addObjectCreate("Server",
                                 "org.apache.catalina.core.StandardServer",
                                 "className");
        digester.addSetProperties("Server");
        digester.addSetNext("Server",
                            "setServer",
                            "org.apache.catalina.Server");


        digester.addObjectCreate("Server/GlobalNamingResources",
                                 "org.apache.catalina.deploy.NamingResources");
        digester.addSetProperties("Server/GlobalNamingResources");
        digester.addSetNext("Server/GlobalNamingResources",
                            "setGlobalNamingResources",
                            "org.apache.catalina.deploy.NamingResources");


        digester.addObjectCreate("Server/Listener",
                                 null, // MUST be specified in the element
                                 "className");
        digester.addSetProperties("Server/Listener");
        digester.addSetNext("Server/Listener",
                            "addLifecycleListener",
                            "org.apache.catalina.LifecycleListener");


        digester.addObjectCreate("Server/Service",
                                 "org.apache.catalina.core.StandardService",
                                 "className");
        digester.addSetProperties("Server/Service");
        digester.addSetNext("Server/Service",
                            "addService",
                            "org.apache.catalina.Service");


        digester.addObjectCreate("Server/Service/Listener",
                                 null, // MUST be specified in the element
                                 "className");
        digester.addSetProperties("Server/Service/Listener");
        digester.addSetNext("Server/Service/Listener",
                            "addLifecycleListener",
                            "org.apache.catalina.LifecycleListener");


        //Executor
        digester.addObjectCreate("Server/Service/Executor",
                         "org.apache.catalina.core.StandardThreadExecutor",
                         "className");
        digester.addSetProperties("Server/Service/Executor");


        digester.addSetNext("Server/Service/Executor",
                            "addExecutor",
                            "org.apache.catalina.Executor");


        
        digester.addRule("Server/Service/Connector",
                         new ConnectorCreateRule());
        digester.addRule("Server/Service/Connector", 
                         new SetAllPropertiesRule(new String[]{"executor"}));
        digester.addSetNext("Server/Service/Connector",
                            "addConnector",
                            "org.apache.catalina.connector.Connector");
        
        




        digester.addObjectCreate("Server/Service/Connector/Listener",
                                 null, // MUST be specified in the element
                                 "className");
        digester.addSetProperties("Server/Service/Connector/Listener");
        digester.addSetNext("Server/Service/Connector/Listener",
                            "addLifecycleListener",
                            "org.apache.catalina.LifecycleListener");


        // Add RuleSets for nested elements
        digester.addRuleSet(new NamingRuleSet("Server/GlobalNamingResources/"));
        digester.addRuleSet(new EngineRuleSet("Server/Service/"));
        digester.addRuleSet(new HostRuleSet("Server/Service/Engine/"));
        digester.addRuleSet(new ContextRuleSet("Server/Service/Engine/Host/"));
        digester.addRuleSet(ClusterRuleSetFactory.getClusterRuleSet("Server/Service/Engine/Host/Cluster/"));
        digester.addRuleSet(new NamingRuleSet("Server/Service/Engine/Host/Context/"));


        // When the 'engine' is found, set the parentClassLoader.
        digester.addRule("Server/Service/Engine",
                         new SetParentClassLoaderRule(parentClassLoader));
        digester.addRuleSet(ClusterRuleSetFactory.getClusterRuleSet("Server/Service/Engine/Cluster/"));


        long t2=System.currentTimeMillis();
        if (log.isDebugEnabled())
            log.debug("Digester for server.xml created " + ( t2-t1 ));
        return (digester);

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     * Create and configure the Digester we will be using for shutdown.
     */
    protected Digester createStopDigester() {


        // Initialize the digester
        Digester digester = new Digester();


        // Configure the rules we need for shutting down
        digester.addObjectCreate("Server",
                                 "org.apache.catalina.core.StandardServer",
                                 "className");
        digester.addSetProperties("Server");
        digester.addSetNext("Server",
                            "setServer",
                            "org.apache.catalina.Server");


        return (digester);

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