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J2EE

Introduction   What are our options to administer OSGi runtime in GlassFish? We have already talked about a) a command line tool, and b) a web console. We now have a third option. Recently I came across a REST based console being developed by Filippo Diotalevi. We already have all the necessary support in GlassFish - the REST console requires OSGi/HTTP Service and we have an implementation...
on Sep 4, 2009
The Open Ajax Alliance is a standards organization with the mission of ensuring interoperability within Web based Ajaxified applications. One of their standards relates to intercomponent communication - the ability to subscribe and publish messages which can then be picked up by code written by other authors. Please note that if you don't have an interest in Open Ajax, this post may not be...
on Sep 3, 2009
  Lots of fixes have gone into SailFin 2.0, some of these fixes are related to functionality whereas others are to improve performance. The changes sometimes required creation of new user configurable properties in order to extract the optimal-performance/desired-behavior depending on the users deployment. This article tries to explain some of the properties/attributes that were introduced...
on Sep 2, 2009
This blog highlights some of the changes that are part of GlassFish v3 logging.  Since Prelude I have added 3 asadmin commands related to logging. I have updated the set-log-level command and changed the syntax. See below for details. The new commands are:     * asadmin rotate-log     * asadmin list-logger-levels     * asadmin set-log-level...
on Sep 2, 2009
I've had a few requests on how to write a busy status indicator - you know, the little spinning ball that's there while an Ajax call is active, and which goes away once the request is complete. So, I spent about two hours today, and did just that - including putting it into a component so it's reusable. As usual, it involved no Java, and only a minimal amount of JavaScript. First, I needed...
on Sep 2, 2009
This ultra-quick blog entry shows how to use the JSF runtime to access metadata for a composite component. Note that most of the metadata is optional when creating a composite component, therefore, this entry will be of interest to tool vendors and those wishing to write composite components that stand a chance of showing up nicely in tools. The Using Page When showing a composite component demo...
on Sep 2, 2009
A few weeks ago, I blogged about ways to execute scripts on the client which you were writing out from the server via Ajax.  By popular demand, the latest build of Mojarra now allows execution of inline scripts. So, instead of having to either bundle code into an <eval> tag, or using an event to execute it later, you can now simply say something like: <script type="text/...
on Sep 2, 2009
High availability in SailFin can be achieved by deploying a cluster of instances and configuring the load balancer and the replication modules as per the user's needs. Apart from the basic configuration of these modules, SailFin (2.0) also allows users to separate the intra-cluster traffic (resulting from the load-balancer, replication and the group management service modules) from the external...
on Aug 26, 2009
Bonjour Comment Java? today is some type of historical milestone for Java EE 6: This is Milestone 1 of NetBeans 6.8 and Java EE 6 support with the latest GlassFish v3 (build 57). The bundle is only 132Mb and contains everything you need to start with Java EE 6: the IDE, the Java EE 6 current runtime, the JavaEE 6 JavaDocs (for code completion), the JavaDB database, and very very cool features...
on Aug 3, 2009
During Jazoon 2009 I got few minutes of private attention from Mike Keith to my last article about domain models. That small time was worthy the whole conference for me since Mike pointed the gaps in my text as well as some valuable hints on how to better translate domain models in JPA annotations. From that short conversation, a special sentence remains alive in my memory: don't break the...
on Aug 3, 2009
When you run an application in a plain vanilla Java platform, your code can access publicly visible internal JDK classes. While I understand it is a bad thing, but I do understand that sometimes developers have genuine reasons to access those internal APIs. e.g., our security module in GlassFish has to use some of the JDK Security classes. When one moves those programs to an OSGi environment, the...
on May 29, 2009
Bonjour, Comment Java? EclipseCon 2009 GlassFish Java EE 5, Eclipse Slides are now online: GlassFish Tools Bundle for Eclipse View more presentations from ludoch. and: GlassFish v3, Java EE 6, OSGi, Equinox, Felix and Eclipse View more presentations from ludoch. Ludo
on Mar 25, 2009
Bonjour Comment Java? In a few hours, I'll be attending the EclipseCon Conference as a speaker. I've 2 talks, one around the GlassFish v2.1, v3 Prelude and GlassFish v3 Eclipse Bundle tooling (both for Java EE 5 and the coming Java EE 6) support, and the other one more targeted to GlassFish v3, its OSGi kernel (either Felix or Equinox) and some cool demos using Java EE features like EJBs inside a...
on Mar 24, 2009
Simple Stun Server in SailFin STUN (Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs), defined by RFC 3489) is a protocol that helps  devices (clients) behind a NAT firewall or router with routing of packets. The protocol helps devices to find out the type of NAT service (Full Cone, Restricted Cone, Port Restricted Cone and  Symmetric...
on Mar 9, 2009
The Mojarra Project is proud to announce the second release of the JSF 2.0 PR implementation (which we're calling PR2, for lack of a better name). The binaries and sources can be downloaded from here, or by checking the GlassFish v3 Prelude update center (it should be available there by Monday). As always, you can see the release notes for any additional information. We're very proud of the...
on Feb 6, 2009
This post is simple. In the company that I am working, we have some local area books that have a different control. Because they are out of the normal process, we do not have anything to control the borrowing. That can cause a problem, because sometimes people can accidentally forget that borrowed a book (sometimes I cannot remember what day is in the week and I think I work with crazier guys)....
on Feb 4, 2009

Databases

Well, this is the second time I am using the new blogging platform of Java.net. This time it was much easier and with less hurdle. I want to write about JPA, performance, caching and related things. Though it wont be very well organized but it may come useful for new JPA developers. recently I have assigned a task to work on performance problems of a first tier application and further extend it...
on Sep 3, 2009
The refcard discuss the following items:
on Sep 1, 2009

Eclipse

Now that you've installed GlassFish Tools Bundle for Eclipse 1.1, lets use this bundle to create a simple Metro/JAX-WS compliant Web service and deploy on GlassFish. These steps will work with either Eclipse 3.4.2 or 3.5 with WTP Java EE support. Lets create a simple "Dynamic Web Project" as shown below: Name the project "HelloMetro" and take all other defaults: Click on "Finish" to...
on Aug 26, 2009

Community

Bonjour, Comment Java? This coming Thursday(08/27/09) 'll be at GooglePlex (Mountain View) for an Eclipse Day...The entire genda is at http://wiki.eclipse.org/Eclipse_Day_At_Googleplex_2009. 2 presos seem to be very interesting so far: OSGi for Eclipse Developers Deploying Successful Entreprise Tools and possibly others...The Google crowd is impressive. There is a waiting list for people who...
on Aug 24, 2009