Examples of org.apache.velocity.app.VelocityEngine

org.apache.velocity.app.VelocityEngine

This class provides a separate new-able instance of the Velocity template engine. The alternative model for use is using the Velocity class which employs the singleton model.

Please ensure that you call one of the init() variants. This is critical for proper behavior.

Coming soon : Velocity will call the parameter-less init() at the first use of this class if the init() wasn't explicitly called. While this will ensure that Velocity functions, it almost certainly won't function in the way you intend, so please make sure to call init().
@author Geir Magnusson Jr. @version $Id: VelocityEngine.java,v 1.2.2.1 2001/12/09 19:28:24 geirm Exp $

            for (Map.Entry<String, Object> entry : context.entrySet()) {
              vcontext.put(entry.getKey(), entry.getValue());
            }
          }
            StringWriter writer = new StringWriter();
            VelocityEngine ve = new VelocityEngine();
            ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
            ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
            ve.init();
  
            Template t = ve.getTemplate( templateName );
            t.merge( vcontext, writer );
            System.out.println("================");
            System.out.println(writer.toString());
            System.out.println("================");
            return writer.toString();

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        context.put(entry.getKey(), entry.getValue());
      }
      StringWriter writer = new StringWriter();
      
    
      VelocityEngine ve = new VelocityEngine();
      ve.setProperty(RuntimeConstants.RESOURCE_LOADER, "classpath");
      ve.setProperty("classpath.resource.loader.class", ClasspathResourceLoader.class.getName());
      ve.init();
      Template t = ve.getTemplate( "templates/default.vm" );
      t.merge( context, writer );
      System.out.println(writer);
  }

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        //prop.put("directive.parse.max.depth", 10);
        prop.put(RuntimeConstants.OUTPUT_ENCODING, "UTF-8");
        //******************   da passare nelle conf
        prop.put(RuntimeConstants.FILE_RESOURCE_LOADER_PATH, m.get("path"));
        prop.put(RuntimeConstants.PARSER_POOL_SIZE, "40");
        this.ve = new VelocityEngine();


        try {
            this.ve.init(prop);
        } catch (Exception ex) {
        }

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     * @return Velocity engine initialized to read the template directory.
     */
    private VelocityEngine getEngine(String templateDir) {
        if (!this.engines.containsKey(templateDir)) {
            try {
                VelocityEngine engine = new VelocityEngine();
                engine.setProperty("resource.loader", "file");
                engine.setProperty("file.resource.loader.class", GaeVelocityResourceLoader.class.getCanonicalName());
                engine.setProperty("file.resource.loader.path", templateDir);
                engine.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS, "org.apache.velocity.runtime.log.Log4JLogChute");
                engine.setProperty("runtime.log.logsystem.log4j.logger", LOGGER.getName());
                engine.setProperty("runtime.references.strict", "true");
                engine.init();
                this.engines.put(templateDir, engine);
            } catch (Exception e) {
                throw new CedarRuntimeException("Failed to initialize Velocity engine: " + e.getMessage(), e);
            }
        }

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     * @param configuration the class configurations.
     * @see org.apache.avalon.framework.configuration.Configurable#configure
     */
    public void configure(Configuration configuration) throws ConfigurationException {
        this.resolverContext = new DefaultContext();
        this.tmplEngine = new VelocityEngine();


        // Set up a JavaScript introspector for the Cocoon flow layer
        this.tmplEngine.setProperty(org.apache.velocity.runtime.RuntimeConstants.UBERSPECT_CLASSNAME,
                                    JSIntrospector.class.getName());
        this.tmplEngine.setProperty(Velocity.RUNTIME_LOG_LOGSYSTEM, this);

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     * @see org.apache.avalon.framework.configuration.Configurable#configure
     */
    public void configure(Configuration configuration) throws ConfigurationException {
        this.resolverContext = new DefaultContext();
        this.objectExports = new ArrayList();
        this.tmplEngine = new VelocityEngine();
        this.tmplEngine.setProperty(Velocity.RUNTIME_LOG_LOGSYSTEM, this);


        // First set up our default 'cocoon' resource loader
        this.tmplEngine.setProperty("cocoon.resource.loader.class",
                                    TemplateLoader.class.getName());

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  }


  private static String logChuteName = null;


  private void initializeVelocity() {
    this.velocityEngine = new VelocityEngine();


    // These  properties tell Velocity to use its own classpath-based
    // loader, then drop down to check the root and the current folder
    velocityEngine.addProperty("resource.loader", "class, file");
    velocityEngine.addProperty("class.resource.loader.class",

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    }


    protected void renderContent(Writer out) throws Exception
    {
        VelocityView view = getVelocityView();
        VelocityEngine engine = view.getVelocityEngine();


        if (getTemplate() != null)
        {
            ViewToolContext context = getViewToolContext();

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        return out.toString();
    }


    protected void renderBody(Writer out) throws Exception
    {
        VelocityEngine engine = getVelocityView().getVelocityEngine();


        /*
         * Eventually, it'd be nice to utilize some AST caching here.
         * But that will likely need to wait until the StringResourceLoader
         * is ready for general use (Velocity 1.6), unless we want to
         * duplicate that minimally here in Tools 2.0
         */
        engine.evaluate(getViewToolContext(), out, getId(),
                        getBodyContent().getReader());
    }

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     * @param config servlet configuation
     */
    protected void init(ServletConfig config)
    {
        // initialize a new VelocityEngine
        init(config, new VelocityEngine());


        // initialize a new ToolboxFactory
        init(config, new ToolboxFactory());


        // set encoding & content-type

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