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Update (2012-09-24): Maven users, you can directly link this class (LGPL), as I have uploaded it into Maven Central. Simply add a dependency to: <dependency>    <groupId>eu.headcrashing.treasure-chest</groupId>    <artifactId>EnumerationsClass</artifactId>    <version>...
on Jul 4, 2010
Here is a little code challenge ! I'm actually working on a text-mining/semantic web application focused (for the moment) on biomedical informations and developed in Java. We are using external tools for text-mining analysis and unfortunatly theses tools don't handle HTML pretty well ... If we send raw HTML to the text-mining service, he simply break. So we must convert HTML to plain-text before...
on Jun 30, 2010


In my opinion, SQL Anyhwere is the best RDBMS I can think of. I can remember when we started distributing it in Germany back in the early 1990ies, as one of the first early adopters in this country. Since then, we provided it to hundreds of enterprises, from single-person laptop-only ones to large ones spanning replicated installations crossing country borders. So call me biased in that...
on Jul 3, 2010
The problem at hand is that EclipseLink (great project lead by James Sutherland) does not use a query cache when dealing with ReadAll queries, i.e: all calls to getResultList() go to the database.  Some object-level caching is performed by avoiding construction of new objects based on the primary key values the database call returns.  EclipseLink compares the PK values returned by the...
on Jun 1, 2010


In spite of the cool animation and glamour power of JavaFX, the largest usage of JavaFX will be for building “boring” enterprise software combined with some visualization. There is a dearth of resources exploring architecture options for building serious and large applications using JavaFX. This blog post is an attempt towards addressing that gap. An enterprise JavaFX project can be a...
on Jul 1, 2010
Bean validation is a nice API for for validating Java objects and is included in Java EE 6. But it can also be used anywhere, regardless of the layer. It can be used with or without JPA and in a stand alone Java SE. It formalizes and encourages the validation approach at the domain model level. It helps in de-duplication of the validation logic that we are accustomed to having all over the place...
on Jun 10, 2010
We are opening our embeddable Wiki engine "GWiki", which is written in Java with the Apache License 2.0 to all backend Java developer in the world. If you want to allow your customer to edit rich text fragments in your app, even their I18N files or mulitimedia content in the Wiki-way... try our GWiki - it rocks. Since Gwiki can be extended with macros written in Java...
on May 22, 2010


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on Jun 1, 2010


The Enterprise Architectures for Java EE Weighting Survey ends this Friday, June 25. Kate Jones of Oracle recently talked about the survey and its purpose: We are looking to make improvements to our Java Enterprise Architect course and certification to support Java EE 6. The result of this survey will allow us to better align our Java EE architect course and certification with the role of the...
on Jun 23, 2010
I decided to write down the answer for some questions which my book's readers email me or ask me via twitter in my weblog so everyone can benefit from the answers. Here is the answer to the first question which involves custom security realms. GlassFish supports 5 types of security realms out of the box which are sd follow: File Realm: Usefull for development and testing purposes. GlassFish...
on May 18, 2010

Web Services and XML

JAX-WS RI team is pleased to announce the release of 2.2.1 version. It is also included in Metro 2.0.1 and GlassFish 3.0.1. It is a minor release with few bug fixes. Some of the changes in 2.2.1 are: wsgen can inline schemas in a generated wsdl using a switch Schema Validation support is enhanced Bug fixes The bits are also in JAX-WS Maven repository Continue sending your feedback to the forum...
on Jun 21, 2010


One of the not-so-great things about developing Java web applications is the fact that, after a few redeployments, sooner or later the web container JVM needs to be restarted due to Out Of Memory errors. This has been true in every combination of development environment and web server I have used so far, and until last week Netbeans 6.8 + Glassfish 3.0.1 was no exception. The cause of Out Of...
on Jun 10, 2010


OpenESB project initiated by Sun Microsystems to develop and deliver a high performance, and feature rich implementation of Java Business Integration (JBI) under an open source friendly license. Basic task of JBI implementations is connecting different type of resources and applications together in a standard and none intrusive way. Basic building blocks of an ESB includes the Bus which is a...
on May 24, 2010