Examples of freemarker.core.Environment

freemarker.core.Environment
Object that represents the runtime environment during template processing. For every invocation of a Template.process() method, a new instance of this object is created, and then discarded when process() returns. This object stores the set of temporary variables created by the template, the value of settings set by the template, the reference to the data model root, etc. Everything that is needed to fulfill the template processing job.
Data models that need to access the Environment object that represents the template processing on the current thread can use the {@link #getCurrentEnvironment()} method.
If you need to modify or read this object before or after the process call, use {@link Template#createProcessingEnvironment(Object rootMap,Writer out,ObjectWrapper wrapper)} @author Jonathan Revusky @author Attila Szegedi

        // use it to process the template with the user's settings.
        //
        // FIXME: the casting from Appendable to Writer is a temporary fix that could cause a
        //        run time error if in the future we will pass a different class to the method
        //        (such as a StringBuffer).
        Environment env = template.createProcessingEnvironment(context, (Writer) outWriter);
        applyUserSettings(env, context);
        env.process();
        return env;
    }

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    }


    @SuppressWarnings("unchecked")
    public Writer getWriter(final Writer out, Map args) {
        final StringBuilder buf = new StringBuilder();
        final Environment env = Environment.getCurrentEnvironment();
        Map<String, Object> envContext = FreeMarkerWorker.getWrappedObject("context", env);
        final Map<String, Object> templateCtx;
        if (envContext == null) {
            templateCtx = FreeMarkerWorker.createEnvironmentMap(env);
        } else {

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    }


    @SuppressWarnings("unchecked")
    public Writer getWriter(final Writer out, Map args) {
        // final StringBuilder buf = new StringBuilder();
        final Environment env = Environment.getCurrentEnvironment();
        Map<String, Object> ctx = FreeMarkerWorker.getWrappedObject("context", env);
        if (ctx == null) {
            ctx = FastMap.newInstance();
        }
        final String mapKey = FreeMarkerWorker.getArg(args, "mapKey", ctx);

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        this.renderPagination = renderPagination;
    }


    private void executeMacro(Appendable writer, String macro) throws IOException {
        try {
            Environment environment = getEnvironment(writer);
            Reader templateReader = new StringReader(macro);
            // FIXME: I am using a Date as an hack to provide a unique name for the template...
            Template template = new Template((new java.util.Date()).toString(), templateReader, FreeMarkerWorker.getDefaultOfbizConfig());
            templateReader.close();
            environment.include(template);
        } catch (TemplateException e) {
            Debug.logError(e, "Error rendering screen thru ftl", module);
        } catch (IOException e) {
            Debug.logError(e, "Error rendering screen thru ftl", module);
        }

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            Debug.logError(e, "Error rendering screen thru ftl", module);
        }
    }


    private Environment getEnvironment(Appendable writer) throws TemplateException, IOException {
        Environment environment = environments.get(writer);
        if (environment == null) {
            Map<String, Object> input = UtilMisc.toMap("key", null);
            environment = FreeMarkerWorker.renderTemplate(macroLibrary, input, writer);
            environments.put(writer, environment);
        }

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        // use it to process the template with the user's settings.
        //
        // FIXME: the casting from Appendable to Writer is a temporary fix that could cause a
        //        run time error if in the future we will pass a different class to the method
        //        (such as a StringBuffer).
        Environment env = template.createProcessingEnvironment(context, (Writer) outWriter);
        applyUserSettings(env, context);
        env.process();
        return env;
    }

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                servletContextHashModel);
        expect(rootDataModel.get(FreemarkerServlet.KEY_REQUEST)).andReturn(
                httpRequestHashModel);


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


        replay(params, body);
        FreemarkerAutotagRuntime runtime = new FreemarkerAutotagRuntime();


        runtime.execute(env, params, new TemplateModel[0], body);

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        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);
        replay(params, body);
        FreemarkerAutotagRuntime runtime = new FreemarkerAutotagRuntime();

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        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")
        Map<String, TemplateModel> params = createMock(Map.class);
        TemplateDirectiveBody body = createMock(TemplateDirectiveBody.class);

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        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);
        assertEquals(new Integer(42), FreemarkerUtil.getAsObject(model, Integer.class, new Integer(1)));
        verify(template, rootDataModel, out, model);
    }

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