Examples of org.apache.velocity.context.Context

org.apache.velocity.context.Context
Interface describing the application data context. This set of routines is used by the application to set and remove 'named' data object to pass them to the template engine to use when rendering a template. This is the same set of methods supported by the original Context class @see org.apache.velocity.context.AbstractContext @see org.apache.velocity.VelocityContext @author Jason van Zyl @author Geir Magnusson Jr. @version $Id: Context.java 291585 2005-09-26 08:56:23Z henning $

                         Throwable e)
    {
        try
        {
            // get a velocity context
            Context ctx = createContext(request, response);


            Throwable cause = e;


            // if it's an MIE, i want the real cause and stack trace!
            if (cause instanceof MethodInvocationException)
            {
                // put the invocation exception in the context
                ctx.put(KEY_ERROR_INVOCATION_EXCEPTION, e);
                // get the real cause
                cause = ((MethodInvocationException)e).getWrappedThrowable();
            }


            // add the cause to the context
            ctx.put(KEY_ERROR_CAUSE, cause);


            // grab the cause's stack trace and put it in the context
            StringWriter sw = new StringWriter();
            cause.printStackTrace(new java.io.PrintWriter(sw));
            ctx.put(KEY_ERROR_STACKTRACE, sw.toString());


            // retrieve and render the error template
            Template et = getTemplate(errorTemplate);
            mergeTemplate(et, ctx, response);

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     *  @param request  HttpServletRequest object containing client request
     *  @param response HttpServletResponse object for the response
     */
    protected void doRequest(HttpServletRequest request, HttpServletResponse response)
    {
        Context context = null;
        try
        {
            // then get a context
            context = createContext(request, response);

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     */
    public Context render(HttpServletRequest request,
                          HttpServletResponse response) throws IOException
    {
        // then get a context
        Context context = getContext(request, response);


        // get the template
        Template template = getTemplate(request, response);


        // merge the template and context into the response

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    public Context render(HttpServletRequest request, Writer out)
        throws IOException
    {
        // then get a context
        Context context = getContext(request);


        // get the template
        Template template = getTemplate(request);


        // merge the template and context into the writer

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        {
            keys.addAll(tools.keySet());
        }


        // recurse down the velocity context collecting keys
        Context velctx = this.context.getVelocityContext();
        while (velctx != null)
        {
            Object[] ctxKeys = velctx.getKeys();
            keys.addAll(Arrays.asList(ctxKeys));
            if (velctx instanceof AbstractContext)
            {
                velctx = ((AbstractContext)velctx).getChainedContext();
            }

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    }


    private String mergeTemplateIntoString(final String templateLocation, final Map<String, Object> model) {
        StringWriter result = new StringWriter();
        try {
            Context velocityContext = createVelocityContext(model);
            velocityEngine.mergeTemplate(templateLocation, SyncopeConstants.DEFAULT_ENCODING, velocityContext, result);
        } catch (VelocityException e) {
            LOG.error("Could not get mail body", e);
        } catch (RuntimeException e) {
            // ensure same behaviour as by using Spring VelocityEngineUtils.mergeTemplateIntoString()

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     *
     * @param model Velocity model
     * @return Velocity context
     */
    protected Context createVelocityContext(Map<String, Object> model) {
        Context toolContext = velocityToolManager.createContext();
        return new VelocityContext(model, toolContext);
    }

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        if (page == null || page.length() == 0) {
            throw new ViewHandlerException("Invalid template source");
        }


        Context context = new VelocityContext();


        context.put(REQUEST, request);
        context.put(RESPONSE, response);


        Template template = null;


        try {
            template = ve.getTemplate(page);

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     * </ul>
     *
     * @return a new StrutsVelocityContext
     */
    public Context createContext(ValueStack stack, HttpServletRequest req, HttpServletResponse res) {
        Context result = null;
        VelocityContext[] chainedContexts = prepareChainedContexts(req, res, stack.getContext());
        StrutsVelocityContext context = new StrutsVelocityContext(chainedContexts, stack);
        Map standardMap = ContextUtil.getStandardContext(stack, req, res);
        for (Iterator iterator = standardMap.entrySet().iterator(); iterator.hasNext();) {
            Map.Entry entry = (Map.Entry) iterator.next();

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        }


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


            Context c = (Context) contextList.get( i );


            o = c.get( key );


            if ( o != null )
                return o;
        }

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