Jon Maron from Oracle has just published an article about transaction processing in distributed SOA. You will learn in this article the challenges that you have when you want to manage transactions in a distributed Services Oriented Architecture running using Web Services.
J2EE 1.4 introduces a major release of JSP: 2.0. Here some of the cool new features:
<html>Find more about JSP 2.0 Expression Language in the J2EE 1.4 tutorial.
<head><title>JSP 2.0 new features</title></head>
<body>
Hello ${param.name}
</body>
</html>
<%@ attribute name="title" required="true" description="Title of the document"%>Here is the JSP that uses this new Tag:
<%@ attribute name="textColor" required="true" description="Color of the Title"%>
<h1 style="color:${textColor}">${title}</h1>
<%@ taglib tagdir="/WEB-INF/tags/" prefix="tags"%>
<html>
<head>
</head>
<body>
<p>
<tags:mytag title="My new JSP" textColor="blue"/>
</p>
<p>
Hello World${param.name}
</p>
</body>
</html>
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<include-prelude>/WEB-INF/includes/prelude.jsp</include-prelude>
<include-coda>/WEB-INF/includes/coda.jsp</include-coda>
</jsp-property-group>
</jsp-config>
Oracle has published a new white paper about Service Oriented Architecture, and how Oracle Application Server 10g accelerates SOA development and deployment. Read the paper on the Oracle Web Site.
In the context of the 10th anniversary of Oracle TopLink, The Server Side published an interview of Mike Keith and Doug Clark, architect and product manager of TopLink. They talk about persistence in J2EE using EJB 3.0, but also the differences between TopLink and other persistence solutions...
One of my favorites tools on my Mac is Konfabulator that allows you to create -or use prebuilt- application called Widgets. This Widgets are for example battery level, weather, see the Widget Gallery. The reason why I love it is not necessary the list of existing one, but more because you can very easily develop yours using Javascript. Dowload it and start to develop your widgets, developer guide, javascript reference are available in the Konfabulator Workshop
I was discussing with a friend about the creation of a monitoring dashboard in HTML. As any monitoring tool you want to be able to see the information in *real-time*, so you need to refresh the content.... One way of doing it is to refresh the whole page and this is easy, just use the meta tag: <META HTTP-EQUIV="Refresh" CONTENT="5; URL=http://www.grallandco.com/"> where 5 is the number of seconds between each refresh. Javascript allows you to easily refresh a specific image of your page (a chart for example):
<img src="myChartServlet" name="chart1"/> <script language="JavaScript"> function loadImage() { var now = new Date(); if (document.images) { document.images.chart1.src = 'myChartServlet?time='+now.getTime(); // add the time to avoid caching } setTimeout('loadImage()',1000); } setTimeout('loadImage()',1000); </script>You can obviously make the whole think dynamic and configurable...
