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DataNucleus 1.0 is developed from the JPOX 1.2 codebase. It provides support for all JPOX features
as well as adding on more. All releases are checked regularly against the JDO2 and JPA TCKs,
meaning that DataNucleus has reached a level of stability in terms of functionality. Occasionally,
due to unknown bugs, or due to new functionality being introduced we need to change some aspects of
DataNucleus. As a result sometimes users will have to make some changes to move between versions
of DataNucleus. We aim to keep this to a minimum.
Migrating from DataNucleus 1.0.0 M3 to 1.0.0 M4 will require the following changes.
-
Changes have been made to the internal API for generic JDOQL/JPQL queries so
anybody implementing their own datastore plugin should update their query
implementation to use this new API.
Anyone using the Level 2 cache is strongly advised to upgrade to this version
Migrating from DataNucleus 1.0.0 M2 to 1.0.0 M3 will not require any changes.
Anyone using the Level 2 cache is strongly advised to upgrade to this version
Migrating from DataNucleus 1.0.0 M1 to 1.0.0 M2 will currently the following changes
-
Mappings for java types have been split off into a new extension-point
org.datanucleus.java_type
. Any existing mappings specify the SCO wrapper
or default-persistent, default-fetch-group, default-embedded will need updates
-
Several packages relating to "mapped" datastores are now moved across into
the RDBMS plugin from "core"
-
Persistence property renames
-
datanucleus.store.connectionProvider.Name
is renamed
to
datanucleus.rdbms.connectionProviderName
-
datanucleus.connectionProvider.FailOnError
is renamed
to
datanucleus.rdbms.connectionProviderFailOnError
-
datanucleus.datastoreAdapterClassName
is renamed
to
datanucleus.rdbms.datastoreAdapterClassName
Anyone using the JDO JCA Adapter is strongly advised to upgrade to this version
Moving from JPOX 1.2.* to DataNucleus 1.0 will involve the following changes
-
Rename all persistent properties that started with "org.jpox". These should now be
prefixed
datanucleus
-
Any use of MetaData vendor extensions should now use the vendor name of
datanucleus
instead of
jpox
. DataNucleus does actually provide support for
jpox
vendor extensions but this will be dropped at some point in the future.
-
Rename any use of JPOX classes. These should now be prefixed
org.datanucleus
In addition,
JPOXLogger
is now
NucleusLogger
.
JPOXJDOHelper
is now
NucleusJDOHelper
,
JPOXJPAHelper
is now
NucleusJPAHelper
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