Examples of freemarker.template.ObjectWrapper

freemarker.template.ObjectWrapper
Maps Java objects to the type-system of FreeMarker Template Language (see the {@link TemplateModel}interfaces). Thus this is what decides what parts of the Java objects will be accessible in the templates and how.
For example, with a {@link BeansWrapper} both the items of {@link Map} and the JavaBean properties (the getters)of an object are accessible in template uniformly with the {@code myObject.foo} syntax, where "foo" is the map key orthe property name. This is because both kind of object is wrapped by {@link BeansWrapper} into a{@link TemplateHashModel} implementation that will call {@link Map#get(Object)} or the getter method, transparentlyto the template language. @see Configuration#setObjectWrapper(ObjectWrapper)

    
    private static Object unwrap(TemplateModel model, boolean permissive) throws TemplateModelException {
        Environment env = Environment.getCurrentEnvironment();
        TemplateModel nullModel = null;
        if(env != null) {
            ObjectWrapper wrapper = env.getObjectWrapper();
            if(wrapper != null) {
                nullModel = wrapper.wrap(null);
            }
        }
        return unwrap(model, nullModel, permissive);
    }

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                throw new TemplateException("Jython Models cannot be instantiated using the ?new built-in", env);
            }
        }


        public Object exec(List arguments) throws TemplateModelException {
            ObjectWrapper ow = env.getObjectWrapper();
            BeansWrapper bw = 
                ow instanceof BeansWrapper 
                ? (BeansWrapper)ow
                : BeansWrapper.getDefaultInstance();
            return bw.newInstance(cl, arguments);

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                throw new TemplateException(cnfe, env);
            }
        }


        public Object exec(List arguments) throws TemplateModelException {
            ObjectWrapper ow = env.getObjectWrapper();
            BeansWrapper bw = 
                ow instanceof BeansWrapper 
                ? (BeansWrapper)ow
                : BeansWrapper.getDefaultInstance();
            return bw.newInstance(cl, arguments);

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            }
        }
        else if ("object_wrapper".equals(param)) {
            try {
                Class cl = Class.forName(value);
                ObjectWrapper ow = (ObjectWrapper) cl.newInstance();
                conf.setObjectWrapper(ow);
            } catch (Exception e) {
                fail("Error setting object wrapper to " + value + "\n" + e.getMessage());
            }
        }

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        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);

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    public void testWrite() throws IOException, ServletException {
        ApplicationContext applicationContext = createMock(ServletApplicationContext.class);
        ServletContext servletContext = createMock(ServletContext.class);
        GenericServlet servlet = createMockBuilder(GenericServlet.class).createMock();
        ServletConfig servletConfig = createMock(ServletConfig.class);
        ObjectWrapper objectWrapper = createMock(ObjectWrapper.class);


        expect(servletConfig.getServletContext()).andReturn(servletContext);


        replay(servlet, servletConfig);
        servlet.init(servletConfig);

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    public void testRenderException1() throws IOException, ServletException {
        ApplicationContext applicationContext = createMock(ServletApplicationContext.class);
        ServletContext servletContext = createMock(ServletContext.class);
        GenericServlet servlet = createMockBuilder(GenericServlet.class).createMock();
        ServletConfig servletConfig = createMock(ServletConfig.class);
        ObjectWrapper objectWrapper = createMock(ObjectWrapper.class);


        replay(servlet, servletConfig);
        servlet.init(servletConfig);


        expect(applicationContext.getContext()).andReturn(servletContext).anyTimes();

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    public void testGetValue() throws TemplateModelException {
        Template template = createMock(Template.class);
        TemplateHashModel model = createMock(TemplateHashModel.class);
        TemplateScalarModel valueModel = createMock(TemplateScalarModel.class);
        Configuration configuration = createMock(Configuration.class);
        ObjectWrapper objectWrapper = createMock(ObjectWrapper.class);
        Writer writer = new StringWriter();


        expect(template.getMacros()).andReturn(new HashMap<Object, Object>());
        expect(valueModel.getAsString()).andReturn("value");

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    public void testGetValueNull() throws TemplateModelException {
        Template template = createMock(Template.class);
        TemplateHashModel model = createMock(TemplateHashModel.class);
        TemplateScalarModel valueModel = createMock(TemplateScalarModel.class);
        Configuration configuration = createMock(Configuration.class);
        ObjectWrapper objectWrapper = createMock(ObjectWrapper.class);
        Writer writer = new StringWriter();


        expect(template.getMacros()).andReturn(new HashMap<Object, Object>());
        expect(model.get("key")).andReturn(null);
        expect(template.getConfiguration()).andReturn(configuration);

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    public void testGetValueException() throws TemplateModelException {
        Template template = createMock(Template.class);
        TemplateHashModel model = createMock(TemplateHashModel.class);
        TemplateScalarModel valueModel = createMock(TemplateScalarModel.class);
        Configuration configuration = createMock(Configuration.class);
        ObjectWrapper objectWrapper = createMock(ObjectWrapper.class);
        Writer writer = new StringWriter();


        expect(template.getMacros()).andReturn(new HashMap<Object, Object>());
        expect(model.get("key")).andThrow(new TemplateModelException());

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