Blog Xebia France

Review of the papers Xebia

The review of the papers of actuality Popular dance / weekly J2EE offered by Xebia.

Actuality editors / SSII

• SpringSource and Oracle together for OSGI of firm

The corner of technology

• Lucene passes to Popular dance 5
• Mark Reinhold justifies the introduction of closures
• PATTERNS NOSQL

Ev nements of our community in France and abroad

• Devoxx on 2009: the balance sheet

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Devoxx Day 4 Integration for the Web with iBeans

Ross Mason created Female mule ESB plan in 2003 then founded MuleSource, the firm behind this popular ESB OPEN SOURCE. Having stationed during time in the support of this ESB, the editor has recently operated on a diversification of his portfolio and was rechristened for occasion MuleSoft. So last months saw the appearance of Tcat Server, an offer Tomcat for firm, of iBeans, and lately of Female mule Data Integrator.

Among these new products, iBeans is probably most intriguing. The principle of this framework: a solution of integration for applications Web with idea that iBeans intervenes where Female mule ESB stops.

After a discreet appearance in beta stage, MuleSoft reveals little by little information on iBeans for two months. It is in this context that Ross Mason introduced iBeans to Devoxx 2009 in Antwerp.

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Advent calendar

In December, 2004, I created Xebia in France with for ambition to manufacture a loved firm by its wage earners, appreciated by its clients and respected by its partners.

Having crossed all my career at the editors of software, I looked like  " small blue " in the new world, that of computer benefits. I often discovered there with entertainment, sometimes with dread of the practices which I did not know.

On the occasion of our 5 years, with some Xebians, we decided to give you a BOULEVARD twinkle, illustrating some stages of the daily life of the Small Delighted World of SSII.

Like an Advent calendar, you will be able to discover on our Blog, every (working) day up to Christmas, the drawings of GABS, the designer of Nouvel Obs who worked for Xebia on this occasion.

Cheerful holidays.

Luke Legardeur
President of Xebia

Devoxx Day 5 Lombok plan

Because all good things have the end, here is to come for me the last session of this Devoxx 2009 with introduced by the developers of the tool (Roel Spilker and Reinier Zwitserloot).

The objective of this product is to make us gain time and to improve the legibility of our classes. How? And good, for some annotations, the tool is going to generate methods for example for us toString, equals and hashcode but also getters and setters of our POJO. Certainly, our IDES already offers us this job but there remain 2 differences in height:

• it does not belong any more to the developer to call Generate xxx of eclipse, the generation of these methods will be made in the import of annotations or in the maintenance of the file;
• but especially, the generation of these methods does not make Popular dance in the source code but directly in Bytecode, our POJOS stays therefore klin.

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Devoxx Day 4 Popular dance Performance Tuning

In Devoxx, two sessions were devoted to the topic of the tuning of performance in Popular dance: Performance for the performance-shy by Holly Cummins and tunning the not so dark art of performance by Kirk Pepperdine and Dan Hardiker. We stay here on this last.

Kirk Pepperdine (photo opposite) is Popular dance Champion and has an expertise admitted in the field of the performances of applications Popular dance. They also remember its presentation in April, 2008 in ParisJUG where he had gives an outline of problems linked to this subject.
Dan Hardiker is from his part the founder of a firm specialised in the hosting of solutions based on Confluence.

The session which they both introduced to Devoxx was not meant to be exhaustive about performance, to be very too large and complex to be treated in an hour, but tried especially to put forward principles and attitudes to be adopted.

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Maven Definitive Guide FR estimate your passwords

To have spoken about it at the end of September, you know perhaps that I participate in the French translation of the Maven Definitive Guide. As you can determine it, translation is moved forward well now, we will throw besides probably very soon requests of rereading of the second and last part (you will be informed about it on this blog).

I use this occasion to introduce you an extract by taking as the model of a functionality which I did not know before getting down to it: how to estimate your passwords in your Settings Maven.

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Devoxx Day 4 Maven Reloaded

Jason van Zyl, the emblematic leader plan Maven, was present in Devoxx to introduce novelties to come in environment Maven: Maven 3.0 and 3.1, revision of M2ECLIPSE, improvements to come on Nexus; contents were dense.

He begins his presentation by apologising for the version 1.0 Maven which raised experimentation and was not intended for such broadcasting. Version 2.0 introduced as for her many defects, he also admits him. He promises then a tool mature and succeeded with Maven 3.0.

Plan stagnated during several years leaving the place in no major improvement. The complexity of the source code of Maven, based on Plexus, a container of injection of dependency which is peculiar to it, is partly reason there. Jason van Zyl explains so that few developers contribute to the core of plan, by comparison with the broad community working on plugins.

This inactivity linked to the defects of Maven 2.0 drove to the creation of many alternative plans which win in popularity: Ivy, Gradle, Buildr, On this subject, the leader of plan Maven sees this competition as advantageous but stresses the need to keep a compatibility between artefacts produced by all these tools.

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FLEX: Custom style DataGrid

During the revision of one of our developments Flex, we set styles up for the different components of application. But it happens that we met a small difficulty on the component DataGrid. To note also the use of FLEX 4 in this example, but this problem is also valid with Flex 3.

Styles

With FLEX, styles are very simple to set up, and are made in the same way as in HTML:

• Or via the definition of styles directly in the file MXML:

• Or via the definition of a leaf of styles CSS, declared in the file MXML:

Concerning the component DataGrid, to change the colours of lines becomes coarse with property alternatingItemColors. Nevertheless situation gets more complicated when we must apply these colours to the lines of the single column...

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Devoxx Day 3 JEE6

As enunciated in our summary of the keynote of Wednesday, the star of this Devoxx 2009 is apparently JEE6. And, in the first rank with my superb T-shirt "I Coil Spring", I could use a general presentation of this new version of JEE by and the small caricature of Rod Johnson.

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Devoxx Day 3 The keynote

This keynote first one which took place on Wednesday marks the official beginning of conferences of Devoxx. Stephan Janssen welcomeed us by specifying us some figures for Devoxx 2009:

• 2500 participants,
• 737 represented companies as Xebia for example,
• 132 sessions,
• 120 presenters,
• 56 JUGS (among whom 10 in France),
• 36 countries,
• and 19 partners what is less than usually.

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