JarCastingVRaptor streamable pages
This projects aims to enable async rendering of htmls using VRaptor. The inspiration came from this Linkedin talk(http://engineering.linkedin.com/play/composable-and-streamable-play-apps).
#Configuring
If you are using maven, simply add the following dependency:
<dependency>
<groupId>br.com.caelum.vraptor</groupId>
<artifactId>vraptor-streamable-pages</artifactId>
<version>4.0.1</version>
</dependency>
#Example
Take a look on this example:
@Controller
public class IndexController {
private final Result result;
@Inject
private Streamer streamer;
/**
* @deprecated CDI eyes only
*/
public IndexController() {
this(null);
}
@Inject
public IndexController(Result result) {
this.result = result;
}
@Path("/")
public void index() throws IOException, InterruptedException, ExecutionException {
streamer.order("http://localhost:8080/vraptor-blank-project/index/start")
.unOrder("http://localhost:8080/vraptor-blank-project/header",
"http://localhost:8080/vraptor-blank-project/body",
"http://localhost:8080/vraptor-blank-project/footer")
.order("http://localhost:8080/vraptor-blank-project/end");
result.nothing();
}
@Path("/start")
public void start() {
result.include("variable", "VRaptor!");
}
@Path("/header")
public void header() throws InterruptedException {
Thread.sleep(2000);
}
@Path("/body")
public void body() {
}
@Path("/footer")
public void footer() {
}
@Path("/path")
public void end() {
}
}
Example using jsp
You can also use our taglib to achieve the same result. Suppose that your /WEB-INF/jsp/index/inidex.jsp is like this:
<%@taglib prefix="streamer" uri="http://vraptor.org/jsp/taglib/streamer" %>
<html>
<head>
<link src="css/styles.css" rel="stylesheet">
</head>
<body>
<div id="header-pagelet"></div>
<div id="body-pagelet"></div>
<div id="footer-pagelet"></div>
<streamer:stream>
<streamer:page url="header"/>
<streamer:page url="body"/>
<streamer:page url="footer"/>
</streamer:stream>
</body>
</html>