Not to belabor the point here, but reading on I see the following in
section 2.2 ("Rationale"):
There is no existing Java platform specification that proposes a
standard architecture for storing the
state of Java objects persistently in transactional datastores.
Not exactly the case anymore. I suggest this passage be updated (or
eliminated) in light of JPA. Perhaps the statement could be amended
to point out that there is no existing spec that proposes a
*datastore-agnostic* standard architecture for persistence. This is
probably the chief conceptual discriminator between JDO and JPA
today. No flame bait intended on this thread, btw; I'm a JDO user
and advocate. I mention these things because I believe it's in JDO's
best interest to acknowledge JPA wherever appropriate, and
distinguish itself and it's raison d'être wherever it can.
- Chris
On Aug 4, 2007, at 3:49 PM, cbeams wrote:
Craig,
The introduction's preamble reads:
Currently, aside from JDO, there are three Java standards for
storing Java data persistently: serial-
ization, JDBC, and Enterprise JavaBeans. Serialization preserves
relationships among a graph of
Java objects, but does not support sharing among multiple users.
JDBC requires the user to explic-
itly manage the values of fields and map them into relational
database tables. Enterprise JavaBeans
require a container in which to run.
There's no mention of JPA here; I imagine there should be, as it is
indeed a fourth standard. Perhaps it's out of scope or
inappropriate, but it would be nice to see the spec 'officially'
address the relationship between these two increasingly similar
standards.
Thanks,
- Chris Beams
From: Craig L Russell <[EMAIL PROTECTED]>
Date: August 3, 2007 7:04:52 PM PDT
To: Apache JDO project <[email protected]>, JDO Expert Group
<[EMAIL PROTECTED]>
Subject: JDO 2.1 specification draft can be reviewed...
at http://db.apache.org/jdo/documentation.html
Check it out, and send comments...
Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/
jdo
408 276-5638 mailto:[EMAIL PROTECTED]
P.S. A good JDO? O, Gasp!
