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List:       ojb-dev
Subject:    Re: [ann] new release 1.0.RC6
From:       Oleg Nitz <on () ukr ! net>
Date:       2004-03-29 20:08:39
Message-ID: 200403300008.05753.on () ukr ! net
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Hi Thomas,

FYI: I've got a bug report from Joerg Heinicke pointing at a serious problem 
at OTM layer (user can modify cache between transactions). I am working on it 
now, I hope to finish the refactoring during this week.

Regards,
 Oleg

On Sunday 28 March 2004 15:11, Thomas Mahler wrote:
> Dear all,
>
> We've got a new release! Given we find no showstoppers during the next
> week we will approach the Project Management Committee (PMC) of the
> db.apache.org project to get approval to relabel this release as the
> final 1.0 version.
>
> Armin worked hard to get our regression testbed rocksolid. We now have
> more than 600 testcases covering all major areas of the framework!
> I'm confident that this testsuite will help us to maintain and even
> increse the reliability of our code from release to release.
>
> Thanks to all who helped and contributed to this release!
>
> --Thomas
>
>
>  From the release notes:
>
> ---------------------------------------------------------------------
> Release 1.0 rc6
> ---------------------------------------------------------------------
>
> NEW FEATURES:
>   -
>
> NOTES:
> - Repository.dtd has changed, don't forget to replace this file
> - Upgraded to the new Apache License, Version 2.0
> - No support for HSQLDB 1.7.2RC1 yet
> - No support for Torque 3.1 yet
>
> - Add new PersistenceBrokerFactory implementation for use in managed
> environments when *only* the
> PB-api was used and participation in JTA transaction via Synchronization
> interface is needed.
>
> - Add new configuration property 'autoSync' to ObjectCacheDefaultImpl.
> Used to enable a simple
> synchronization mechanism to keep cache in sync with DB
>
> - Add new attribute values for reference-/collection-descriptor
> auto-update/-delete attribute.
> Now we have five possible values: none, link, object, true, false. The
> true, false values
> are now deprecated but will NOT be removed in near future (so don't
> panic!).
>
> CHANGES:
> - fix bug in internal table OJB_HL_SEQ, column type of MAX_ID was
> INTEGER but
> needs BIGINT to support Long on java side
>
> - no longer throw an exception when calling abortTransaction more than
> one time
> or an internal rollback (by ConnectionManager on the used connection)
> was already done
>
> - Add object-cache tag in standard jdbc-connection-descriptor in
> repository_database.xml
> to enable new 'autoSync' property of ObjectCacheDefaultImpl for all
> operations made by
> this DB connection
>
> - Allow infinite lifetime of cached objects in ObjectCacheDefaultImpl
> (handle with care ;-))
>
> - odmg-api implementation, disable restore of transient objects on
> transaction abort,
> because we can't really restore the whole object with all references
>
> - now using ANTLR 2.7.2 and Unicode support in OQL queries
> - now using ANT 1.6.0
>
> - RelationshipPrefetcher no longer modifies auto-retrieve setting of
> Relationship-Descriptor.
> This may result in additional sql-queries but is safer in a
> multi-threaded environment.
>
> - Added column methods to Criteria. addColumnEqualTo, addColumnIn etc.
> The column parameter
> of these methods will not be translated during sql-generation. These
> methods are mainly used
> for internal purpose.
>
> BUG FIXES:
>
> Please refer to our Bug tracking site
> (http://issues.apache.org/scarab/servlet/scarab/)
> under http://issues.apache.org/scarab/servlet/scarab/issues/id/OJBxxx
> to see details for a bug with id OJBxxx.
>
> - fix bug in MetadataManager, when 'per thread changes' is enabled and
> many different
> DescriptorRepository instances were used, gc can't collect unused
> instances because
> StatementManager doesn't release references to used DescriptorRepository
> instances.
>
> - fix bug in ObjectCacheDefaultImpl, it doesn't make sense to use a soft
> reference
> for the object wrapper of the cached object. Use a softreference for the
> cached
> object instead
>
> - fix bug in CacheDistributor (internal used ObjectCache
> implementation), each CacheDistributor
> instance have to held ObjectCache instances for the associated
> PersistenceBroker instance
>
> - fix documentation bug in ObjectCacheDefaultImpl, property 'timeout' use
> seconds instead of milliseconds
>
> - fix bug in new DList implementation (DListImpl_2), materialization of
> objects
> failed when DList instance itself was persisted (using db.bind(...)) and
> re-loaded within tx, but iteration over the list values was done outside
> of the tx
>
> - The bogus ODMG Distributed Lockmanagement feature has been replaced by
> a new
>    Servlet based LockServer. Transaction isolation should now work
> properly even
>    accross a cluster of JVMs.
>
> - fix bug in MtoNCollectionPrefetcher, multi-key handling is now supported.
>
> - ClassCastException with ManageableCollection implementations on m:n
> relation.
> m:n relation now can handle ManageableCollection collection classes in a
> correct way,
> the collection class no longer needs to implement java.util.Collection.
>
> KNOWN ISSUES:
> - odmg-api: It is not possible to exchange objects in 1:n references.
> E.g. two objects with 1:n reference, each with one reference object,
> obj_1{ref_1}
> and obj_2{ref_2}. Lock objects and exchange the references in collection
> obj_1{ref_2}
> and obj_2{ref_1} and commit.
>
>
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