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 $

      }


      @Override
      public String renderTemplate(String templateName, Map<String, Object> context) {
        try {
          VelocityContext vcontext = new VelocityContext();
          if (context != null) {
            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");

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  @Test
  public void testVelocityOutput() throws Exception {
    AdvancedCodeBlockMacro macro = new AdvancedCodeBlockMacro();


    VelocityContext context = new VelocityContext();
    Map<String, Object>  innercontext = new HashMap<String,Object>();
    String[] splitted = BaseAdvancedCodeblockMacro.splitMacroBodyIntoContentAndConfig(configWithContent);
    String configUnparsed = splitted[0];
    String contentUnparsed = splitted[1];
      context.put("codeblocks",macro.parseConfigWithContent(configUnparsed, contentUnparsed, "key", 1l, innercontext, true));
      for (Entry<String,Object> entry : innercontext.entrySet()) {
        context.put(entry.getKey(), entry.getValue());
      }
      StringWriter writer = new StringWriter();
      
    
      VelocityEngine ve = new VelocityEngine();

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    /** Template directory used for unit tests. */
    public static final String UNITTEST_TEMPLATE_DIR = "test/com/cedarsolutions/util/gae";


    /** Test renderTemplate(). */
    @Test public void testRenderTemplate() {
        VelocityContext context = new VelocityContext();
        context.put("foo", "Velocity");
        String result = GaeVelocityUtils.getInstance().renderTemplate(UNITTEST_TEMPLATE_DIR, "test.vm", context);
        assertEquals("Hello Velocity World!", result);


        Map<String, Object> map = new HashMap<String, Object>();
        map.put("foo", "Another");

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    }


    /** Test createVelocityContext(). */
    @Test public void testCreateVelocityContext() {
        Map<String, Object> map = null;
        VelocityContext context = GaeVelocityUtils.getInstance().createVelocityContext(map);
        assertEquals(0, context.getKeys().length);


        map = new HashMap<String, Object>();
        map.put("key1", "value1");
        map.put("key2", new Integer(3));
        context = GaeVelocityUtils.getInstance().createVelocityContext(map);
        assertEquals(2, context.getKeys().length);
        assertEquals("value1", context.get("key1"));
        assertEquals(new Integer(3), context.get("key2"));
    }

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    public String render(String template, HashMap<String, Object> m) {


        try {


            Template t = this.ve.getTemplate(template);
            VelocityContext context = new VelocityContext();
            context.put("data", m);
            StringWriter writer = new StringWriter();
            t.merge(context, writer);
            return writer.toString();


        } catch (ResourceNotFoundException ex) {

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    public String renderString(String sourceStr, HashMap<String, Object> m) {


        try {


            StringWriter w = new StringWriter();
            VelocityContext context = new VelocityContext();
            context.put("data", m);
            return "" + this.ve.evaluate(context, w, "mystring", sourceStr);


        } catch (ParseErrorException ex) {
            return ex.getMessage();
        } catch (MethodInvocationException ex) {

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     * Create a VelocityContext based on an input map.
     * @param map  Input map to use as source of context
     * @return VelocityContext created based on input map.
     */
    public VelocityContext createVelocityContext(Map<String, Object> map) {
        VelocityContext context = new VelocityContext();


        if (map != null) {
            for (String key : map.keySet()) {
                context.put(key, map.get(key));
            }
        }


        return context;
    }

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        // Pass along the SourceResolver to the Velocity resource loader
        this.resolverContext.put(CONTEXT_RESOLVER_KEY, resolver);
        this.resolverContext.put(CONTEXT_SOURCE_CACHE_KEY, new HashMap());


        // Initialize the Velocity context
        this.velocityContext = new VelocityContext();
        this.velocityContext.put("template", src);
        this.velocityContext.put("request", ObjectModelHelper.getRequest(objectModel));
        this.velocityContext.put("response", ObjectModelHelper.getResponse(objectModel));
        this.velocityContext.put("context", ObjectModelHelper.getContext(objectModel));
        this.velocityContext.put("parameters", params);

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            validate();


            List<File> resourceBundleArtifacts = downloadBundles( resourceBundles );
            supplementModels = loadSupplements( supplementalModels );


            VelocityContext context = new VelocityContext( properties );
            configureVelocityContext( context );


            RemoteResourcesClassLoader classLoader = new RemoteResourcesClassLoader( null );


            initalizeClassloader( classLoader, resourceBundleArtifacts );

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        super.render(request, response);
    }


    private Context createPortletVelocityContext(RenderRequest request, RenderResponse response)
    {
        Context ctx = new VelocityContext();
        request.setAttribute(PORTLET_BRIDGE_CONTEXT, ctx);
        // PLT.22
        ctx.put("renderRequest", request);
        ctx.put("renderResponse", response);
        ctx.put("portletConfig", getPortletConfig());
        // constants
        ctx.put("STATE_NORMAL", WindowState.NORMAL);
        ctx.put("STATE_MAX", WindowState.MAXIMIZED);
        ctx.put("STATE_MIN", WindowState.MINIMIZED);
        ctx.put("MODE_VIEW", PortletMode.VIEW);
        ctx.put("MODE_EDIT", PortletMode.EDIT);
        ctx.put("MODE_HELP", PortletMode.HELP);
        ctx.put("USER_INFO", PortletRequest.USER_INFO);
        return ctx;
    }

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