One of the key results of the work on EJB 3.0 has been the introduction of a lightweight POJO persistence model for Java EE. This work on persistence has also been expanded to include use in Java SE environments - i.e. "outside the Java EE container". This talk covers the key aspects of the Java Persistence API, including changes since the publication of the JSR 220 Public Draft. Topics cover include: Brief overview of the developer view of the new POJO persistence model, EntityManager API and entity bean lifecycle, Persistence units and persistence contexts, Detached objects vs extended persistence contexts, Object/Relational Mapping using Java metadata annotations and/or XML and more.
Direct download: JavaPolis_2005_-_EJB_3_Persistence.mp3
Category: podcasts -- posted at: 7:57 AM

When somebody says "challenging environment", what do you think of? Well, the Formula One environment is really one of these challenging environments. Behind those fast streaking cars there is a complex world made of real-time systems collecting and distributing high-speed data feeds to pieces of software and team engineers that take decisions by the second. This does not occur in the stable, quiet, controlled-atmosphere room in the computing center of a bank, but in a narrow, noisy, hot garage, with extremely busy people moving among flying network and power cables. So it is not unlikely to have the network erroneously disconnected, or a switch that goes unexpectedly off, or a troubled computer that stops working. Nevertheless, real-time data must be still collected and delivered: stop the flow for more than a few seconds and engineers could miss that signal glitch that is warning about an engine failure ? in a word, the race is lost. Last but not least, the whole garage is unpacked and set up every week in a different location of the world. Now you get where the challenge is.
Direct download: JavaPolis_2005_-_Formula_One_telemetry_with_Java.mp3
Category: podcasts -- posted at: 7:33 AM

In this JavaPolis conference talk you'll see JasperReports in action by the founder and Architect of JasperReports, Teodor Danciu. JasperReprots is a powerful open source Java reporting tool that has the ability to deliver rich content onto the screen, to the printer or into PDF, HTML, XLS, CSV and XML files. It is entirely written in Java and can be used in a variety of Java enabled applications, including J2EE or Web applications, to generate dynamic content. Its main purpose is to help creating page oriented, ready to print documents in a simple and flexible manner.
Direct download: JavaPolis_2005_-_Jasper_Reports.mp3
Category: podcasts -- posted at: 2:35 PM





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