February 01, 2011
Mark Wielaard: New GPG key.
Finally created a new GPG key using gnupg. The old one was a DSA/1024 bits one and 8 years old. The new one is a RSA/2048 bits one. I will use the new one in the future to sign any release tarballs I might create. pub 2048R/57816A6A 2011-01-29 Key f...
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February 01, 2011
Andrew Hughes: [SECURITY] IcedTea6 1.7.8, 1.8.5, 1.9.5 Released!.
We are pleased to announce a new set of security releases, IcedTea6 1.7.8, IcedTea6 1.8.5 and IcedTea6 1.9.5.
This update contains the following security updates:
The IcedTea project provides a harness to build the source code from OpenJDK6 u...
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Spotlight on Java Persistence 2.0, with Linda DeMichiel
This week's java.net Spotlight is GlassFish Podcast Episode #051 - Java Persistence 2.0 (JPA) by Linda DeMichiel. You'll probably want to download the GlassFish Virtual Conference Slides (Sun Online Account registration is required) and open up Session7Java_Persistence_2_0.pdf -- these are the slides Linda DeMichiel presented in the GlassFish Virtual Conference, which took place on December 15, 2009. The GlassFish Podcast Episode 51 audio follows this set of slides. My guess is that Linda's part in the podcast was actually recorded at the GlassFish Virtual Conference.
Linda begins with an historical presentation of the evolution of Java persistence, starting with its origins within EJB 3.0, the emergence of JPA 1.0, and now Java Persistence 2.0 (JSR 317). Something I didn't know previously: the reference implementation for JPA 2.0 is EclipseLink, the Eclipse Persistence Services Project. EclipseLink is integrated into GlassFish v3.
Linda presents and briefly discusses several examples, including Collections, Embeddables, Maps, and automatic orphan deletion; then covers enhancements to the Java Persistence Query Language (with examples). Linda says the Criteria API is probably the largest single enhancement in JPA 2.0, and she spends time going over some of the key features of the API, for example CriteriaBuilder and CriteriaQuery. After covering pessimistic locking, locking APIs, and validation, Linda wraps...
Date: March, 22 2010
Url: http://www.java.net/blog/editor/archive/2010/03/22/spotlight-java-persistence-20-linda-demichiel
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