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 $

     * @param data Turbine information.
     * @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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     * Allows the VelocityService to peform post-request actions.
     * (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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    public Context initControlContext()
    {
        /*
         * Create a new Velocity context.
         */
        Context context = new VelocityContext();
        context.put("targetDatabase", targetDatabase);
        context.put("targetPlatform", targetPlatform);
        context.put("databaseName", databaseName);
        context.put("databaseUser", databaseUser);
        context.put("databasePassword", databasePassword);
        context.put("databaseHost", databaseHost);
        return context;
    }

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    public Context initControlContext()
    {
        /*
         * Create a new Velocity context.
         */
        Context context = new VelocityContext();


        /*
         * Transform the XML database schema into an
         * object that represents our model.
         */
        XmlToAppData xmlParser = new XmlToAppData();
        app = xmlParser.parseFile(xmlFile);


        Database db = app.getDatabase(databaseName);
        if (db == null)
        {
            db = app.getDatabases()[0];
        }
        try
        {
            XmlToData dataXmlParser = new XmlToData(db, dataDTD);
            List data = dataXmlParser.parseFile(dataXmlFile);
            context.put("data", data);
        }
        catch (Exception e)
        {
            System.err.println("Exception parsing data XML:");
            e.printStackTrace();
        }
        /*
         * Place our model in the context.
         */
        context.put("appData", app);


        /*
         * Place the target database in the context.
         */
        context.put("targetDatabase", targetDatabase);


        return context;
    }

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     * @exception Exception, a generic exception.
     */
    public ConcreteElement buildTemplate( RunData data )
        throws Exception
    {
        Context context = TurbineVelocity.getContext( data );


        String templateName = data.getTemplateInfo().getNavigationTemplate();


        StringElement output = new StringElement();
        output.setFilterState(false);

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    public Context initControlContext()
    {
        /*
         * Create a new Velocity context.
         */
        Context context = new VelocityContext();


        /*
         * Transform the XML database schema into an
         * object that represents our model.
         */
        XmlToAppData xmlParser = new XmlToAppData();
        app = xmlParser.parseFile(xmlFile);


        /*
         * Place our model in the context.
         */
        Database dbm = app.getDatabase(databaseName);
        if (dbm == null)
        {
            dbm = app.getDatabases()[0];
        }
        context.put("databaseModel", dbm);


        context.put("dataset", "all");


        System.err.println("Your DB settings are:");
        System.err.println("driver : " + databaseDriver);
        System.err.println("URL : " + databaseUrl);
        System.err.println("user : " + databaseUser);
        System.err.println("password : " + databasePassword);


        try
        {
            Class.forName(databaseDriver);
            System.err.println("DB driver sucessfuly instantiated");


            // Attemtp to connect to a database.


            Connection conn = DriverManager.getConnection(
                    databaseUrl, databaseUser, databasePassword);


            System.err.println("DB connection established");
            context.put("tableTool", new TableTool(conn));
        }
        catch (SQLException se)
        {
            System.err.println("SQLException while connecting to DB:");
            se.printStackTrace();

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     */
    public ConcreteElement buildTemplate( RunData data ) throws Exception
    {
        StringElement output = null;
        String screenData = null;
        Context context = TurbineVelocity.getContext(data);


        // This will already be properly set and will not be null
        // because of TemplateSessionValidator.
        String templateName = TurbineTemplate.getScreenTemplateName(
            data.getTemplateInfo().getScreenTemplate() );


        // Template service adds the leading slash, but make it sure.
        if ((templateName.length() > 0) &&
            (templateName.charAt(0) != '/'))
        {
            templateName = '/' + templateName;
        }


        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,
                    "screens" + templateName,
                    data.getResponse().getOutputStream());
            }
            else
            {
                screenData = TurbineVelocity
                    .handleRequest(context,"screens" + 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 ( "processingException", e.toString() );
            context.put ( "stackTrace", StringUtils.stackTrace(e) );
            templateName = TurbineResources.getString(
                "template.error", "/error.vm");
            if ((templateName.length() > 0) &&
                (templateName.charAt(0) != '/'))
            {

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    {
        /*
         * Attempt to get it from the data first.  If it doesn't
         * exist, create it and then stuff it into the data.
         */
        Context context = (Context)
            data.getTemplateInfo().getTemplateContext(VelocityService.CONTEXT);
        
        if (context == null)
        {
            context = getContext();
            context.put ( "data", data );


            if (pullModelActive)
            {
                /*
                 * Populate the toolbox with request scope, session scope

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     * @exception MessagingException.
     */
    public void send()
        throws MessagingException
    {
        Context context = getContext(data);
        context.put("mail",this);


        String htmlbody = "";
        String textbody = "";


        // Process the templates.

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     */
    private static final Context getContext(RunData data)
    {
        // Attempt to get it from the RunData first.  If it doesn't
        // exist, create it and then stuff it into the RunData.
        Context vc = (Context)data.getTemplateInfo()
            .getTemplateContext(VelocityService.CONTEXT);
        if (vc == null)
        {
            vc = TurbineVelocity.getContext(data);
            data.getTemplateInfo()

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