Examples of org.apache.velocity.VelocityContext

org.apache.velocity.VelocityContext
General purpose implemention of the application Context interface for general application use. This class should be used in place of the original Context class. This implementation uses a HashMap (@see java.util.HashMap ) for data storage. This context implementation cannot be shared between threads without those threads synchronizing access between them, as the HashMap is not synchronized, nor are some of the fundamentals of AbstractContext. If you need to share a Context between threads with simultaneous access for some reason, please create your own and extend the interface Context @see org.apache.velocity.context.Context @author Geir Magnusson Jr. @author Jason van Zyl @author Fedor Karpelevitch @author Daniel Rall @version $Id: VelocityContext.java 291687 2005-09-26 17:37:14Z henning $

    }
    return context;
  }


  public static VelocityContext getVelocityContext(){
    VelocityContext context = velocityContext.get();
    if(context == null){
      context = new VelocityContext();
      velocityContext.set(context);
    }
    return context;
  }

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        + projectName.substring(1);


    this.useJPA = useJPA;


    // 往上下文中填入数据
    this.context = new VelocityContext();
    Map<String, String> contextMap = new HashMap<String, String>();
    contextMap.put("projectName", this.projectName);
    contextMap.put("packageName", packageName);
    if (this.useJPA)
      contextMap.put("entityName", this.projectName);

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    this.useJPA = true;


    this.packageNamePath = packageName.replace(".", File.separator);


    // 往上下文中填入数据
    this.context = new VelocityContext();
    Map<String, String> contextMap = new HashMap<String, String>();
    contextMap.put("packageName", packageName);
    contextMap.put("entityName", entityName);
    context.put("context", contextMap);
    context.put("useJPA", this.useJPA);

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    public VelocityUtils() {
    }


    public static String getRenderedTemplate(String templateName, Map contextMap) {
        return getRenderedTemplate(templateName, ((Context) (new VelocityContext(contextMap))));
    }

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    }


    public static String getRenderedContent(String templateContent, Map contextMap) {
        try {
            StringWriter tempWriter = new StringWriter();
            VelocityContext context = new VelocityContext(contextMap);


            VelocityManager.getInstance().getVelocityEngine().evaluate(context, tempWriter, "getRenderedContent", templateContent);
            return tempWriter.toString();
        } catch (Exception e) {
            log.error("Error occurred rendering template content", e);

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            while (st.hasMoreTokens()) {
                String classname = st.nextToken();


                try {
                    VelocityContext velocityContext = (VelocityContext) ObjectFactory.getObjectFactory()
                            .buildBean(Class.forName(classname));
                    contextList.add(velocityContext);
                } catch (Exception e) {
                    log.warn("Warning.  " + e.getClass().getName() + " caught while attempting to instantiate a chained VelocityContext, "
                            + classname + " -- skipping");

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        IBindingFactory bfact = BindingDirectory.getFactory(Site.class);
        IUnmarshallingContext uctx = bfact.createUnmarshallingContext();
        uctx.setDocument(new FileInputStream(m_configFile), m_configFile.getName(), null);
        uctx.pushObject(this);
        Object obj = uctx.unmarshalElement();
        VelocityContext vctx = new VelocityContext();
        List actives = new ArrayList();
        vctx.put("actives", actives);
        if (obj instanceof Menu) {
            
            // handle basic linkages with source relative to configuration file
            Menu menu = (Menu)obj;
            menu.setLinkages("");
            menu.loadContent(m_configFile.getAbsoluteFile().getParentFile());
            
            // generate single-menu site image
            vctx.put("menu", menu);
            addValues(menu.getValues(), vctx);
            recurseChildren(menu.getChildren(), vctx, actives);
            
        } else {
            
            // generate multiple-menu site image
            Site site = (Site)obj;
            ArrayList menus = site.getChildren();
            site.initialize(m_sourceRoot);
            vctx.put("site", site);
            addValues(site.getValues(), vctx);
            for (int i = 0; i < menus.size(); i++) {
                Menu menu = (Menu)menus.get(i);
                vctx.put("menu", menu);
                String[] priors = addValues(menu.getValues(), vctx);
                recurseChildren(menu.getChildren(), vctx, actives);
                if (priors != null) {
                    restoreValues(menu.getValues(), priors, vctx);
                }

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        StringWriter writer = new StringWriter();


        VelocityEngine engine = new VelocityEngine();
        engine.init();


        VelocityContext velocityContext = new VelocityContext();


        velocityContext.put("test1", "@test1@");
        velocityContext.put("test2", "@test2@");


        assertTrue(engine.evaluate(velocityContext, writer, "mylogtag", "$test1$test2"));
        assertEquals(
            "@test1@@test2@",
            writer.getBuffer().toString());

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    private Context createContext( PortletRequest  request,
                                   PortletResponse response,
                                   Map             context )
    {
        VelocityContext ctx = new VelocityContext(  );


        /* Inherited context */
        if ( context != null )
        {
            putAll( context, ctx );

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                "performing " + methodName + " with templateFile '" + templateFile + "' and templateObjects '" +
                templateObjects + "'");
        }
        ExceptionUtils.checkEmpty("templateFile", templateFile);
        ExceptionUtils.checkNull("output", output);
        this.velocityContext = new VelocityContext();
        this.loadVelocityContext(templateObjects);


        Template template = (Template)this.discoveredTemplates.get(templateFile);
        if (template == null)
        {

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