Package org.apache.velocity.context

Examples of org.apache.velocity.context.Context

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        if ( styleContext != null && styleContext.containsKey( key ) )
            return true;

        for( int i = 0; i < contextList.size(); i++)
        {
            Context c = (Context) contextList.get( i );

            if ( c.containsKey( key ))
                return true;
        }

        return false;
    }
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     */
    public void doBuild(RunData data)
        throws Exception
    {
        // Get the context needed by Velocity.
        Context context = TurbineVelocity.getContext(data);

        // variable for the screen in the layout template
        context.put(TurbineConstants.SCREEN_PLACEHOLDER,
                    new TemplateScreen(data));

        // variable to reference the navigation screen in the layout template
        context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                    new TemplateNavigation(data));

        // Grab the layout template set in the VelocityPage.
        // If null, then use the default layout template
        // (done by the TemplateInfo object)
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     */
    public void doBuild(RunData data)
        throws Exception
    {
        // Get the context needed by Velocity.
        Context context = TurbineVelocity.getContext(data);

        String screenName = data.getScreen();

        log.debug("Loading Screen " + screenName);

        // First, generate the screen and put it in the context so
        // we can grab it the layout template.
        ConcreteElement results =
            ScreenLoader.getInstance().eval(data, screenName);

        String returnValue = (results == null) ? "" : results.toString();

        // variable for the screen in the layout template
        context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

        // variable to reference the navigation screen in the layout template
        context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                    new TemplateNavigation(data));

        // Grab the layout template set in the VelocityPage.
        // If null, then use the default layout template
        // (done by the TemplateInfo object)
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    public ConcreteElement buildTemplate(RunData data)
        throws Exception
    {
        String screenData = null;
       
        Context context = TurbineVelocity.getContext(data);

        String screenTemplate = data.getTemplateInfo().getScreenTemplate();
        String templateName
            = TurbineTemplate.getScreenTemplateName(screenTemplate);
       
        // The Template Service could not find the Screen
        if (StringUtils.isEmpty(templateName))
        {
            log.error("Screen " + screenTemplate + " not found!");
            throw new Exception("Could not find screen for " + screenTemplate);
        }
       
        try
        {
            // if a layout has been defined return the results, otherwise
            // send the results directly to the output stream.
            if (getLayout(data) == null)
            {
                TurbineVelocity.handleRequest(context,
                        prefix + templateName,
                        data.getResponse().getOutputStream());
            }
            else
            {
                screenData = TurbineVelocity
                        .handleRequest(context, prefix + templateName);
            }
        }
        catch (Exception e)
        {
            // If there is an error, build a $processingException and
            // attempt to call the error.vm template in the screens
            // directory.
            context.put (TurbineConstants.PROCESSING_EXCEPTION_PLACEHOLDER, e.toString());
            context.put (TurbineConstants.STACK_TRACE_PLACEHOLDER, ExceptionUtils.getStackTrace(e));
           
            templateName = Turbine.getConfiguration()
                .getString(TurbineConstants.TEMPLATE_ERROR_KEY,
                           TurbineConstants.TEMPLATE_ERROR_VM);
           
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     */
    public void doBuild(RunData data)
        throws Exception
    {
        // Get the context needed by Velocity.
        Context context = TurbineVelocity.getContext(data);

        data.getResponse().setContentType("text/html");

        String screenName = data.getScreen();

        log.debug("Loading Screen " + screenName);

        // First, generate the screen and put it in the context so
        // we can grab it the layout template.
        ConcreteElement results =
            ScreenLoader.getInstance().eval(data, screenName);

        String returnValue = (results == null) ? "" : results.toString();

        // variable for the screen in the layout template
        context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

        // variable to reference the navigation screen in the layout template
        context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                    new TemplateNavigation(data));

        // Grab the layout template set in the VelocityPage.
        // If null, then use the default layout template
        // (done by the TemplateInfo object)
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     * @exception Exception, a generic exception.
     */
    public ConcreteElement buildTemplate(RunData data)
        throws Exception
    {
        Context context = TurbineVelocity.getContext(data);

        String screenTemplate = data.getTemplateInfo().getScreenTemplate();
        String templateName
            = TurbineTemplate.getScreenTemplateName(screenTemplate);

        // The Template Service could not find the Screen
        if (StringUtils.isEmpty(templateName))
        {
            log.error("Screen " + screenTemplate + " not found!");
            throw new Exception("Could not find screen for " + screenTemplate);
        }

        try
        {
            TurbineVelocity.handleRequest(context,
                                          prefix + templateName,
                                          data.getOut());

        }
        catch (Exception e)
        {
            // If there is an error, build a $processingException and
            // attempt to call the error.vm template in the screens
            // directory.
            context.put (TurbineConstants.PROCESSING_EXCEPTION_PLACEHOLDER, e.toString());
            context.put (TurbineConstants.STACK_TRACE_PLACEHOLDER, ExceptionUtils.getStackTrace(e));

            templateName = Turbine.getConfiguration()
                .getString(TurbineConstants.TEMPLATE_ERROR_KEY,
                           TurbineConstants.TEMPLATE_ERROR_VM);

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     */
    public void doBuild(RunData data)
        throws Exception
    {
        // Get the context needed by Velocity.
        Context context = TurbineVelocity.getContext(data);

        String screenName = data.getScreen();

        log.debug("Loading Screen " + screenName);

        // First, generate the screen and put it in the context so
        // we can grab it the layout template.
        ConcreteElement results =
            ScreenLoader.getInstance().eval(data, screenName);

        String returnValue = (results == null) ? "" : results.toString();

        // variable for the screen in the layout template
        context.put(TurbineConstants.SCREEN_PLACEHOLDER, returnValue);

        // variable to reference the navigation screen in the layout template
        context.put(TurbineConstants.NAVIGATION_PLACEHOLDER,
                    new TemplateNavigation(data));

        // Grab the layout template set in the VelocityPage.
        // If null, then use the default layout template
        // (done by the TemplateInfo object)
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     * @exception Exception, a generic exception.
     */
    protected void doBuildBeforeAction(RunData data)
        throws Exception
    {
        Context context = TurbineVelocity.getContext(data);
        data.getTemplateInfo()
            .setTemplateContext(VelocityService.CONTEXT, context);
    }
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     * (releases the (non-global) tools in the context for reuse later)
     */
    protected void doPostBuild(RunData data)
        throws Exception
    {
        Context context = TurbineVelocity.getContext(data);
        TurbineVelocity.requestFinished(context);
    }
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        // getResourceAsInputStream also considers the content cache
        StringWriter buffer = new StringWriter();
        String logTag = getClass().getName();
        Map variableMap = ExchangeHelper.createVariableMap(exchange);
        Context velocityContext = new VelocityContext(variableMap);

        // let velocity parse and generate the result in buffer
        VelocityEngine engine = getVelocityEngine();
        if (log.isDebugEnabled()) {
            log.debug("Velocity is evaluating using velocity context: " + variableMap);
        }
        engine.evaluate(velocityContext, buffer, logTag, reader);

        // now lets output the results to the exchange
        Message out = exchange.getOut();
        out.setBody(buffer.toString());

        Map<String, Object> headers = (Map<String, Object>) velocityContext.get("headers");
        for (Entry<String, Object> entry : headers.entrySet()) {
            out.setHeader(entry.getKey(), entry.getValue());
        }
    }
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