[Objectbridge-developers] related opensource projects

[Thomas M. <tho...@ho...>]

Here are some links to related projects:
http://castor.exolab.org
VERY interesting! they have a lot of excellent concepts and high quality
code. main concepts: SQL, XML and LDAP Persistence. JDO implementation,
OQL implementation, runtime compilation of Descriptor classes, Service
provider for EJB Container Managed Persistence, etc...

IMHO JDO (see
http://java.sun.com/aboutJava/communityprocess/jsr/jsr_012_dataobj.html
or http://java.sun.com/products/jdbc/related.html ) will have an
enormous impact on the development of EJB servers and persistence
frameworks. I suppose it will gain much more momentum than ODMG.
Once we have implemented ODMG it won't be difficult to build an JDO
wrapper. But we should start studying the JDO concepts right now, We
could also start with an JDO implementation right now and build an
architecture with pluggable APIs.

What do you think?

http://sourceforge.net/projects/osage
very active project on sourceforge. SQL persistence, XML mapping from
CASTOR, does not cover all ObJectBridge features (ObjectCache,
Transaction management, ODMG)

http://sourceforge.net/projects/dbobjects
more concerned with low level aspects of O/R mapping. possibly a source
for optimization strategies

http://sourceforge.net/projects/fodmg
an upcoming project that aims at a free ODMG implementation (againt
RDBMS I assume) for C, Perl, Python and JAVA. In my eyes the Java part
is currently being done by OJB.

regards,

Thomas