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32

JPA / JDO Class Enhancer

The Enhancer is a post compilation tool that improves performance by modifying the byte code of compiled classes after compilation.
29

What role is the JDO in ObjectDB?

. It required vendors to enhance the bytecode of domain objects to produce class files that were binary ... and that its reliance on bytecode enhancement caused it to be unfairly stigmatized. This was probably true ... community that now thinks nothing of using frameworks that make extensive use of bytecode enhancement
16

Pre-detach loading: retrieval by navigation not working in if statement

it, which one can confirm with javap -c bytecode inspection. The @OneToOne entity variable 'present
16

Problem of Enhancer with JAXB / Proxified Entity Bean.

for JAXB, just add on JVM launch : -Dcom.sun.xml.bind.v2.bytecode.ClassTailor.noOptimize=true
3

JPA Composite Key make Object Db throws "Unexpected exception (Error 990)"

on the VUT class on the call "e" method. A look at the bytecode show : L219 to 221 : checkcast

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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