Examples of groovy.text.SimpleTemplateEngine$SimpleTemplate

groovy.text.SimpleTemplateEngine
Processes template source files substituting variables and expressions into placeholders in a template source text to produce the desired output.
The template engine uses JSP style <% %> script and <%= %> expression syntax or GString style expressions. The variable 'out' is bound to the writer that the template is being written to.
Frequently, the template source will be in a file but here is a simple example providing the template as a string:
```
 def binding = [ firstname : "Grace", lastname  : "Hopper", accepted  : true, title     : 'Groovy for COBOL programmers' ] def engine = new groovy.text.SimpleTemplateEngine() def text = '''\ Dear <%= firstname %> $lastname, We <% if (accepted) print 'are pleased' else print 'regret' %> \ to inform you that your paper entitled '$title' was ${ accepted ? 'accepted' : 'rejected' }. The conference committee. ''' def template = engine.createTemplate(text).make(binding) println template.toString() 
```
This example uses a mix of the JSP style and GString style placeholders but you can typically use just one style if you wish. Running this example will produce this output:
```
 Dear Grace Hopper, We are pleased to inform you that your paper entitled 'Groovy for COBOL programmers' was accepted. The conference committee. 
```
The template engine can also be used as the engine for {@link groovy.servlet.TemplateServlet} by placing thefollowing in your web.xml file (plus a corresponding servlet-mapping element):
```
 <servlet> <servlet-name>SimpleTemplate</servlet-name> <servlet-class>groovy.servlet.TemplateServlet</servlet-class> <init-param> <param-name>template.engine</param-name> <param-value>groovy.text.SimpleTemplateEngine</param-value> </init-param> </servlet> 
```
In this case, your template source file should be HTML with the appropriate embedded placeholders. @author sam @author Christian Stein @author Paul King @author Alex Tkachman

        transformers.add(new Transformer<Reader>() {
            public Reader transform(Reader original) {
                try {
                    Template template;
                    try {
                        SimpleTemplateEngine engine = new SimpleTemplateEngine();
                        template = engine.createTemplate(original);
                    } finally {
                        original.close();
                    }
                    StringWriter writer = new StringWriter();
                    template.make(properties).writeTo(writer);

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     * @return The underlying template engine or <code>null</code> on error.
     */
    protected TemplateEngine initTemplateEngine(ServletConfig config) {
        String name = config.getInitParameter("template.engine");
        if (name == null) {
            return new SimpleTemplateEngine();
        }
        try {
            return (TemplateEngine) Class.forName(name).newInstance();
        } catch (InstantiationException e) {
            log("Could not instantiate template engine: " + name, e);

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        binding.put("rooturl", descriptor.getHudsonUrl());
        binding.put("project", build.getParent());
        
        // we add the binding to the SimpleTemplateEngine instead of the shell
        GroovyShell shell = createEngine(descriptor, Collections.EMPTY_MAP);
        SimpleTemplateEngine engine = new SimpleTemplateEngine(shell);
        try {
            String text = IOUtils.toString(templateStream);
            Template tmpl;
            synchronized (templateCache) {
                Reference<Template> templateR = templateCache.get(text);
                tmpl = templateR == null ? null : templateR.get();
                if (tmpl == null) {
                    tmpl = engine.createTemplate(text);
                    templateCache.put(text, new SoftReference<Template>(tmpl));
                }
            }
            result = tmpl.make(binding).toString();
        } catch(Exception e) {

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    /**
     * Constructs a new GroovyTemplateEngine.
     */
    public GroovyTemplateEngine() {
        templateEngine = new SimpleTemplateEngine();
    }

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    public void testPlatformLineWriter() throws IOException, ClassNotFoundException {
        String LS = System.getProperty("line.separator");
        Map binding = new HashMap();
        binding.put("first", "Tom");
        binding.put("last", "Adams");
        Template template = new SimpleTemplateEngine().createTemplate("<%= first %>\n<% println last %>");
        StringWriter stringWriter = new StringWriter();
        Writer platformWriter = new PlatformLineWriter(stringWriter);
        template.make(binding).writeTo(platformWriter);
        assertEquals("Tom" + LS + "Adams" + LS, stringWriter.toString());
    }

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     * @return The underlying template engine or <code>null</code> on error.
     */
    protected TemplateEngine initTemplateEngine(ServletConfig config) {
        String name = config.getInitParameter("template.engine");
        if (name == null) {
            return new SimpleTemplateEngine();
        }
        try {
            return (TemplateEngine) Class.forName(name).newInstance();
        } catch (InstantiationException e) {
            log("Could not instantiate template engine: " + name, e);

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     * @return The underlying template engine or <code>null</code> on error.
     */
    protected TemplateEngine initTemplateEngine(ServletConfig config) {
        String name = config.getInitParameter("template.engine");
        if (name == null) {
            return new SimpleTemplateEngine();
        }
        try {
            return (TemplateEngine) Class.forName(name).newInstance();
        } catch (InstantiationException e) {
            log("Could not instantiate template engine: " + name, e);

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    RESTFUL,
    ASYNC
  }


  protected AbstractGrailsTemplateGenerator(ClassLoader classLoader) {
    engine = new SimpleTemplateEngine(classLoader);
  }

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                String groovyClosures = new String(IOUtilities.inputStreamToBytes(in));


                cmd = "<% " + groovyClosures + " %>" + cmd;


                // Create Groovy Standard Template
                SimpleTemplateEngine engine = new SimpleTemplateEngine();
                resolvedTemplate = engine.createTemplate(cmd);
            }


            // Do normal Groovy substitutions.
            return resolvedTemplate.make(args).toString();
        }

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    protected Template groovyTemplate() {
        Template groovyTemplate = groovyTemplates.get(getTemplate());
        
        if (groovyTemplate == null) {
            try {
                groovyTemplate = new SimpleTemplateEngine().createTemplate(getTemplate());
                groovyTemplates.put(getTemplate(), groovyTemplate);
            } catch (Exception e) {
                LOGGER.log(Level.SEVERE, "problem with groovy template " + getTemplate(), e);
            }
        }

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