Werner Punz wrote:
Jonathan Harley schrieb:
You might want to look at JDO, which is the current standard for using
databases (and other kinds of datastore) from Java.
Actually no all things currently settle around javax.persistence (jpa)
Not currently, no. JPA is a proposed standard, whereas JDO is the
current standard - it has been around for several years. And when JPA
is finalised, JDO 2.0 (which passed its final ballot just last month)
will exist alongside it.
jdo and others (Hibernate) will be available as extensions and base
frameworks around that one.
Indeed. Because JPA is such a limited standard (only covers
relational datastores, for one thing), JDO products as well as
Hibernate and Toplink will offer many extensions to the JPA standard.
Users will have a choice of using proprietary extensions (in the
case of Hibernate and Toplink) that lock them in to one vendor, or
standardised extensions (JDO) that give them a wide choice of vendor.
Jon
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