Examples of freemarker.template.Template

freemarker.template.Template
A core FreeMarker API that represents a compiled template. Typically, you will use a {@link Configuration} object to instantiate a template.
```
 Configuration cfg = new Configuration(); ... Template myTemplate = cfg.getTemplate("myTemplate.html"); 
```
However, you can also construct a template directly by passing in to the appropriate constructor a java.io.Reader instance that is set to read the raw template text. The compiled template is stored in an an efficient data structure for later use.
To render the template, i.e. to merge it with a data model, and thus produce "cooked" output, call the process method.
Any error messages from exceptions thrown during compilation will be included in the output stream and thrown back to the calling code. To change this behavior, you can install custom exception handlers using {@link Configurable#setTemplateExceptionHandler(TemplateExceptionHandler)} ona Configuration object (for all templates belonging to a configuration) or on a Template object (for a single template).
It's not legal to modify the values of FreeMarker settings: a) while the template is executing; b) if the template object is already accessible from multiple threads. @version $Id: Template.java,v 1.216.2.3 2006/03/10 17:49:02 revusky Exp $

     * @param templateLocation A unique ID for this template - used for caching
     * @param context The context Map
     * @param outWriter The Writer to render to
     */
    public static void renderTemplate(String templateLocation, Map<String, Object> context, Appendable outWriter) throws TemplateException, IOException {
        Template template = getTemplate(templateLocation);
        renderTemplate(template, context, outWriter);
    }

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    /**
     * @deprecated Renamed to {@link #renderTemplateFromString(String, String, Map, Appendable, boolean)}
     */
    @Deprecated
    public static Environment renderTemplateFromString(String templateString, String templateLocation, Map<String, Object> context, Appendable outWriter) throws TemplateException, IOException {
        Template template = cachedTemplates.get(templateLocation);
        if (template == null) {
            synchronized (cachedTemplates) {
                template = cachedTemplates.get(templateLocation);
                if (template == null) {
                    Reader templateReader = new StringReader(templateString);
                    template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                    templateReader.close();
                    cachedTemplates.put(templateLocation, template);
                }
            }
        }

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        }
        return renderTemplate(template, context, outWriter);
    }


    public static Environment renderTemplateFromString(String templateString, String templateLocation, Map<String, Object> context, Appendable outWriter, boolean useCache) throws TemplateException, IOException {
        Template template = null;
        if (useCache){
            template = cachedTemplates.get(templateLocation);
        }
        if (template == null) {
            if (useCache){
                synchronized (cachedTemplates) {
                    template = cachedTemplates.get(templateLocation);
                    if (template == null) {
                        Reader templateReader = new StringReader(templateString);
                        template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                        templateReader.close();
                        cachedTemplates.put(templateLocation, template);
                    }
                }
            } else {
                Reader templateReader = new StringReader(templateString);
                template = new Template(templateLocation, templateReader, defaultOfbizConfig);
                templateReader.close();
            }
        }


        return renderTemplate(template, context, outWriter);

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    public static Template getTemplate(String templateLocation) throws TemplateException, IOException {
        return getTemplate(templateLocation, cachedTemplates, defaultOfbizConfig);
    }


    public static Template getTemplate(String templateLocation, UtilCache<String, Template> cache, Configuration config) throws TemplateException, IOException {
        Template template = cache.get(templateLocation);
        if (template == null) {
            synchronized (cache) {
                template = cache.get(templateLocation);
                if (template == null) {
                    // only make the reader if we need it, and then close it right after!
                    Reader templateReader = makeReader(templateLocation);
                    template = new Template(templateLocation, templateReader, config);
                    templateReader.close();
                    cache.put(templateLocation, template);
                }
            }
        }

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     * Test method for {@link org.apache.tiles.request.freemarker.EnvironmentScopeMap#keySet()}.
     */
    @SuppressWarnings("unchecked")
    @Test
    public void testKeySet() {
        Template template = createMock(Template.class);
        TemplateHashModel model = createMock(TemplateHashModel.class);
        Configuration configuration = createMock(Configuration.class);
        Set<String> names = createMock(Set.class);
        Writer writer = new StringWriter();


        expect(template.getMacros()).andReturn(new HashMap<Object, Object>());
        expect(template.getConfiguration()).andReturn(configuration);
        expect(configuration.getSharedVariableNames()).andReturn(names);


        replay(template, model, configuration, names);
        Environment env = new Environment(template, model, writer);
        EnvironmentScopeMap map = new EnvironmentScopeMap(env);

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     * @throws TemplateModelException If something goes wrong.
     */
    @SuppressWarnings("unchecked")
    @Test(expected = FreemarkerRequestException.class)
    public void testKeySetException() throws TemplateModelException {
        Template template = createMock(Template.class);
        TemplateHashModelEx model = createMock(TemplateHashModelEx.class);
        Configuration configuration = createMock(Configuration.class);
        Set<String> names = createMock(Set.class);
        Writer writer = new StringWriter();


        expect(template.getMacros()).andReturn(new HashMap<Object, Object>());
        expect(model.keys()).andThrow(new TemplateModelException());
        expect(template.getConfiguration()).andReturn(configuration);
        expect(configuration.getSharedVariableNames()).andReturn(names);


        try {
            replay(template, model, configuration, names);
            Environment env = new Environment(template, model, writer);

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    @Test
    public void testCreateRequest() throws IOException, TemplateModelException{
        @SuppressWarnings("unchecked")
        Map<String, TemplateModel> params = createMock(Map.class);
        Template template = createMock(Template.class);
        TemplateHashModel rootDataModel = createMock(TemplateHashModel.class);
        Writer out = createMock(Writer.class);
        TemplateDirectiveBody body = createMock(TemplateDirectiveBody.class);
        GenericServlet servlet = createMock(GenericServlet.class);
        ObjectWrapper wrapper = createMock(ObjectWrapper.class);
        ServletContext servletContext = createMock(ServletContext.class);
        ApplicationContext applicationContext = createMock(ApplicationContext.class);
        HttpServletRequest httpServletRequest = createMock(HttpServletRequest.class);
        HttpServletResponse httpServletResponse = createMock(HttpServletResponse.class);


        expect(template.getMacros()).andReturn(new HashMap<String, Macro>());
        expect(servlet.getServletContext()).andReturn(servletContext)
                .anyTimes();
        expect(
                servletContext
                        .getAttribute(ApplicationAccess.APPLICATION_CONTEXT_ATTRIBUTE))

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                params, body);
    }


    @Test
    public void testCreateModelBody() {
        Template template = createMock(Template.class);
        TemplateHashModel rootDataModel = createMock(TemplateHashModel.class);
        Writer out = createMock(Writer.class);
        expect(template.getMacros()).andReturn(new HashMap<String, Macro>());
        replay(template, rootDataModel, out);
        Environment env = new Environment(template, rootDataModel, out);
        @SuppressWarnings("unchecked")
        Map<String, TemplateModel> params = createMock(Map.class);
        TemplateDirectiveBody body = createMock(TemplateDirectiveBody.class);

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        verify(template, rootDataModel, out, params, body);
    }


    @Test
    public void testGetParameter() throws TemplateModelException {
        Template template = createMock(Template.class);
        TemplateHashModel rootDataModel = createMock(TemplateHashModel.class);
        Writer out = createMock(Writer.class);
        expect(template.getMacros()).andReturn(new HashMap<String, Macro>());
        replay(template, rootDataModel, out);
        Environment env = new Environment(template, rootDataModel, out);
        TemplateNumberModel model = createMock(TemplateNumberModel.class);
        expect(model.getAsNumber()).andReturn(new Integer(42)).anyTimes();
        @SuppressWarnings("unchecked")

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     * @throws TemplateModelException If something goes wrong.
     */
    @Test
    public void testGetAsObject() throws TemplateModelException {
        TemplateNumberModel model = createMock(TemplateNumberModel.class);
        Template template = createMock(Template.class);
        TemplateHashModel rootDataModel = createMock(TemplateHashModel.class);
        Writer out = createMock(Writer.class);


        expect(model.getAsNumber()).andReturn(new Integer(42));
        expect(template.getMacros()).andReturn(new HashMap<String, Macro>());


        replay(template, rootDataModel, out);
        new Environment(template, rootDataModel, out);


        replay(model);

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