ObjectDB Change Log

Version 2.8.8

• Added initial support of Record entities.
• Implemented a new query method: containsAnyKey.
• Improved field type error and internal error messages.
• Improved the Doctor output.
• Fixed a bug in using inner classes for query results.
• Fixed an error due to to an unused type referencing a deleted type.
• Fixed a primary key query issue.
• Fixed a bug in comparing embedded objects in queries (issue #2750).
• Fixed an error on closing an EntityManager with non-comitted flushed transaction (issue #2794).
• Fixed an enum optimization regression (issue #2794).
• Fixed a temporary files locking issue on Linux (issue #2794).

Version 2.8.7

• Added an option to slow backup (see feature request #2681).
• Added an option to view old type versions in the Explorer (-Dobjectdb.ui.debug=true)
• Improved the Doctor (see issue #2691).
• Improved performance following a large eager fetch (issue #2694).
• Restricted waiting time on closing a database on a server to 2 seconds(see issue #2686).
• Fixed a bug in the new option to slow backup in client-server mode (see feature request #2681).
• Fixed Explorer issue after schema evolution (issue #2726).
• Fixed field renaming schema upgrade of previous schema versions (issue #2713).

Version 2.8.6

• Fixed an issue with viewing class Ids in the Explorer (see issue #2677).
• Fixed a regression bug (in version 2.8.5) in using AS in JOIN (issue #2666).
• Fixed a connection pool issue related to memory release (issue #2663).
• Fixed an Enhancer issue in supporting Java 9 modules and packages (issue #2657).
• Fixed a regression bug in handling missing obsolete entity classes (issue #2650).
• Added logging for server connections (see issue #2645).
• Changed how the server handles stop requests (see issue #2645).

Version 2.8.5

• Fixed a bug in using AS in SELECT NEW (breaks some Spring Data JPA queries).
• Fixed a bug in tracking changes to new collections after flush (issue #2640).
• Fixed a StackOverflowError on no access permission to objectdb.conf (issue #2643).
• Fixed a bug in managing pessimistic locks after using LockModeType.NONE.
• Fixed a bug in recovery from an exception during inverse (mapped-by) retrieval.
• Improved recovery from partial deletion of class hierarchy in the Explorer.

Version 2.8.4

• Fixed a critical bug that may cause collisions between schema versions (issue #2621).
• Fixed unsupported unwrap to throw _PersistenceException (a subclass of PersistenceException).
• Fixed an Explorer bug in presenting composite IDs.
• Fixed a bug in using date and time query parameters in the Explorer (issue #2587).
• Fixed a bug in using local dates with BETWEEN in queries (issue #2583).
• Fixed an "Activator requires Java 6 or above" error on some JDKs (issue #2604).
• Improved the process of creating objects in the Explorer (feature request #2602).
• Fixed a performance issue in viewing class instances in the Explorer (issue #2601).
• Fixed an Explorer bug of viewing query results in tables (issue #2600).
• Fixed a bug in using trailing '_' wildcard in LIKE queries (issue #2576).
• Removed exceptions due to closing the database connection during index update (issue #2571).
• Added support for a new query hint for setting a preferred variable processing order (issue #2379)

Version 2.8.3

• Added support of Java 8 date and time types (issues #1495, #2564).
• Added information in the Explorer on consumed database space (feature request #2540).
• Fixed handling enum types that implement interfaces in the Explorer (Issue #2542).
• Improved memory cleaning when entity objects with embeddable elements are detached.
• Improved handling query results that include managed hollow objects.
• Removed false alarms by the Doctor.
• Fixed a deadlock (issue #2512) on closing EntityManager and its factory concurrently.
• Solved a possible issue with closing the ODB-WeakRefPurger daemon thread.

Version 2.8.2

• Added support of deleting classes in the Explorer.
• Improved memory cleaning when entity objects with embeddable elements are detached.
• Improved handling query results that include managed hollow objects.
• Removed false alarms by the Doctor.
• Fixed a deadlock (issue #2512) on closing EntityManager and its factory concurrently.
• Solved a possible issue with closing the ODB-WeakRefPurger daemon thread.

Version 2.8.1

• Improved query plan evaluation (including for selecting composite indexes).
• Fixed new statistics collection for queries.
• Fixed a bug in LEFT OUTER JOIN queries (issue #2438).

Version 2.8.0

• Improved query plan evaluation and selection (issue #2379, issue #2417).
• Increased the number of combinations examined by the query planner (issue #2379).
• Excludes old unused classes in the database from licence limits (issue #2412).
• Added an option to select a query plan using a query hint (see issue #2379).
• Added logging when the number of allowed entity classes is exceeded (feature request #2412).
• Added logging to diagnose unexpected duplicate index entry (issue #2403).
• Fixed a bad optimisation in query execution (issue #2432).
• Fixed an activation issue with some Java versions.
• Fixed an InternalException (issue #2153, see also issue #2027).
• Fixed long compilation time of queries with many (>10) JOINs (issue #2423)
• Fixed the new option in 2.7.6_01 to select a query plan using a query hint (see issue #2379).
• Fixed a critical bug in index based query execution (issue #2414).
• Fixed a bug in loading a TreeSet lazily (issue #2407).
• Fixed an unexpected internal exception in query result cache (issue #2406).

Version 2.7.6

• Added support of an option to disable broken reference cleaning in the Doctor (feature request #2341).
• Added support of cascading delete using JDO (feature request #2329).
• Added logging for "Failed to read from file" error (issue #2322).
• Added an option for eager background purge of weak references (issue #2302).
• Added support of filtering mapped-by (inverse) relationship results using a constraint.
• Changed to-one mapped-by (inverse) relationship with multiple matching to always take the first.
• Changed query optimisation to prefer set retrieval during query execution.
• Improved eager fetch mechanism to avoid unnecessary repeated operations.
• Improved performance of reflection mode (no enhancement) by minimising  tracking backups.
• Improved concurrency by using lock free Synchronization (issue #2327).
• Fixed a regression optimistic lock exception bug (due to fix of issue #2280).
• Fixed a regression bug on remove and persist of an object in the same transaction (issue #2027).
• Fixed a bug in UPDATE queries that modify more than 10000 objects (issue #2355).
• Fixed a NullPointerException (issue #2302, post 43).

Version 2.7.5

• Improved recovery from failure when recovery is enabled with no sync  (issue #2293).
• Added support of using JDO listeners with JPA EntityManager.
• Added debug logging got persist cascading (issue #2299).
• Fixed a bug in restricting server access to a range of IPs (issue #2292).
• Fixed a bug in comparing array fields against parameters in queries (issue #2289).
• Fixed a bug in retrieving new objects of other transactions after flush (issue #2280).
• Fixed a bug in version 2.7.4 in automatic primary key setting.
• Fixed a disabled delete for null values in the Explorer (issue #2249).
• Fixed a ClassCastException in using Tuple.get on a criteria query path (issue #2200).

Version 2.7.4

• Fixed a bug in persisting objects with same ids in a class hierarchy in one transaction.
• Fixed a bug in using JDO Extent of a super class with shared primary key values in subclasses.
• Added a warning if a JDO SingleFieldIdentity class is used as a primary key field type.

Version 2.7.3

• Fixed a bug in query execution optimization (issue #2170).
• Fixed cascading delete through unloaded (lazy) relationships.
• Fixed a NullPointerException when using "objectdb.temp.page-file" (issue #2163)
• Added logging and suspend exception for issue #2153.
• Fixed a bug in using SIZE with <= on dates in queries.
• Fixed a bug in schema evolution of indexes.
• Fixed a new false alarm of the Doctor, since 2.7.2 in index checking.
• Fixed a bug in activating a new composite index on new embedded objects.
• Fixed a bug in queries with duplicate values in an IN constraint (issue #1107).

Version 2.7.2

• Added initial support for Java 9.
• Attempt to fix (currently a workaround) and log the nested section key bug (issue #2127).
• Fixed a bug in queries of the form "SELECT o FROM ... WHERE o == :arg"
• Fixed a bug in displaying inverse (mapped by) relations in the Explorer.
• Fixed a bug in reusing database space after removing an index.
• Improved error message on attempt to enhance a class in a jar file in place.
• Fixed a ClassCastException in query selection of embedded object and array fields.
• Fixed an InternalException on some JDO delete queries.
• Fixed a bug in processing a new index definition to a new defined embeddable class.
• Fixed a possible collision of using multiple servers with a shared temp directory.
• Fixed an error message in processing an invalid index.
• Fixed index definitions change exception.
• Fixed reflection mode issues (issue #2086, issue #2087).
• Fixed an Explorer bug in adding objects to collections (issue #2078).
• Fixed a Doctor error message on mismatching index entries.
• Improved using em.find with mismatching (but convertible) key type.
• Added an option for possibly improved concurrent database file access.
• Added automatic logging of query details on internal errors.
• Added configuration path writing to log on database opening.

Version 2.7.1

• Fixed a critical bug that may cause database corruption (issue #1977).
• Improved error messages on entity operation exceptions.
• Fixed a NullPointerException on cascading persist throw an unloaded collection (issue #2049).
• Fixed the location of a temporary file for index update (issue #2050).
• Fixed a bug in schema evolution of non entity class to entity class in multi level hierarchy. 

Version 2.7.0

• Extended maximum supported entity object size to nearly 2GB.
• Added a temporary system property to disable "enhancement ... is old" checks.
• Fixed a bug in handling remove and persist of the same object in one transaction (issue #2027).
• Fixed objectdb.jar to include META-INF/MANIFEST.MF as the first entry (required by Apache Karaf).
• Fixed a cache bug in repeating some sorts of LIKE queries with different parameters.
• Fixed a NullPointerException bug in automatic building of new indexes.
• Fixed a NullPointerException in running the Doctor when new indexes have to be built (issue #1959).
• Fixed a schema evolution bug in handling hierarchy change.
• Fixed setting JDO's "javax.jdo.option.IgnoreCache".
• Fixed JDO exception on invoking currentTransaction on a closed PersistenceManager.
• Fixed an "Enhancement ... is old" bug on overriding persistent properties with a different return type.
• Fixed a bug in using java.lang.Enum as a field/property type (and not a specific enum type).
• Fixed a critical  "Enhancement ... is old" bug when using property access mode (making enhancement unusable).
• Fixed an "Attempt to modify a primary key" bug when using property access mode.
• Fixed a bug in allowing page sizes larger than 64KB (which are not supported by ObjectDB).
• Fixed an issue of very slow online backup.

Version 2.6.9

• Added support for integration with WebSphere / Liberty application server.
• Fixed deleting large transaction temporary files (in the experimental large transactions feature).
• Fixed empty log directory creation when logging is disabled.
• Fixed a bug in using nested embedded objects.
• Fixed a query cache InternalException.
• Fixed JDO PersistenceManager's newObjectIdInstance to support classes with no ID class.
• Fixed a NullPointerException due to unexpected null SharedCacheMode in PersistenceUnitInfo.
• Fixed a bug in removing a modified flushed entity object.

Version 2.6.8

• Added JPA XML validation schema files to Maven/JEE objectdb.jar.
• Added automatic release of pessimistic locks on client-server connection failure.
• Fixed an OptimisticLockException bug on commit after flushing a removed modified entity object.
• Fixed a NullPointerExeption on new index building.
• Fixed a NullPointerExeption on flush (issue #1840).
• Fixed a bug in using temporary files in large transactions.
• Reverts a change in 2.6.6_08 that may cause issue #1839.
• Attempt to fix a bug in using temporary files in large transactions.

Version 2.6.7

• Added an option to write javaagent enhanced classes to file (for diagnosis).
• Extended temporary files support to update queries (issue #1658).
• Improved performance of handling multi activations configuration.
• Fixed a synchronization bug in using temporary files in large transactions.
• Fixed a bug in using @TableGenerator / GenerationType.TABLE.
• Fixed handling classes with no persistent fields in new automatic activation of indexes.
• Fixed a regression bug due to changing references to weak in 2.6.4_04 (issue #1658).
• Fixed a bug in enhancing an entity class with static reference to Log4j.
• Fixed a bug in loading TreeSet and TreeMap fields.
• Fixed Explorer to show error message on non existing referenced objects.
• Fixed a bug in stopping an ObjectDB Server in SSL mode from another process (issue #1804).

Version 2.6.6

• Added support of automatic activation of new indexes (issue #19).
• Fixed a bug in multi variable queries (issue #1801).
• Fixed an Explorer exception when a field in a summary view is not included in the tree/table view.
• Fixed a bug in caching Criteria query programs with IN operator.
• Fixed a bug in handling embedded objects in queries.
• Fixed a bug in ordering query result by an expression that is used in IN operator.
• Fixed a bug in handling pure date and time values.
• Fixed a bug in handling some types of collection and map queries in version 2.6.5.

Version 2.6.5

• Added optional (experimental) support of using clients with different object model versions.
• Changed references to new flushed objects from ObjectDB to weak references.
• Cancelled an exception on cascading removal of an already removed object.
• Renamed internal Enhancer hidden methods to non property method names.
• Fixed a bug in retrieving pure time values (java.sql.Time).
• Fixed a bug in MEMBER OF queries on embedded objects.
• Fixed a bug in querying indexed nested embedded objects.
• Fixed a bug in querying enhanced embeddable classes.
• Fixed server crash on exceeding maximum number of connections specified in configuration.
• Fixed optimistic lock exception on removing of a flushed modified entity in the same transaction.
• Fixed temporary file management for very large transactions (feature request #1658).
• Fixed a bug in persisting dates (TemporalType.DATE) based on time close to clock change.
• Fixed a bug in indexing java.sql.Date fields during time / time zone change.
• Fixed a bug in detachment of embedded objects (if enabled).

Version 2.6.4

• Added memory only database mode.
• Added an option to cascade detachment to embedded objects.
• Added an option to disable reuse of database page objects.
• Improved release of query resources.
• Improved memory management in multi flush transactions.
• Extended detachment of embedded objects to collections.
• Fixed large transaction temporary files implementation (feature request #1658).
• Fixed a bug in handling large objects with long primary keys as query results (issue #1717).
• Fixed detachment of embedded objects to collections.
• Fixed database page objects reuse to release to be cleared on EntityManagerFactory close.
• Fixed a bug in hierarchy schema upgrade.
• Fixed a bug in schema upgrade that includes both class and field renaming.

Version 2.6.3

• Added an option to disable some query execution optimizations.
• Added an option to exclude persistence aware enhancement (feature request #1683).
• Added an option to use temporary files for very large transactions (feature request #1658).
• Fixed an online backup bug (no access during backup operation).
• Fixed JOIN FETCH bugs.
• Fixed a performance issue with mapped by fetch.
• Fixed the ObjectDB Maven repository and Maven examples to work with TomEE.
• Fixed handling merge of an entity with PK == 0 (issue #1667).

Version 2.6.2

• Added support of entity classes with missing implemented interfaces in the Explorer.
• Added method com.objectdb.Utilities.newTrackable(em, cls) for improved performance.
• Added a temporary workaround for NullPointerException on query after flush (issue #1623).
• Improved title of query result windows in the Explorer.
• Changed the Enhancer to return non zero exist code on errors (issue #1635).
• Fixed a NullPointerException on concurrent access of first object of an entity class.
• Fixed bug in using EnumType.STRING based enum collection as a query parameter (issue #1639).
• Fixed a synchronization bug (issue #1643).
• Fixed a regression of build 2.6.1_03 in supporting interfaces in the Explorer.
• Fixed a bug in updating a collection field after GC of the containing entity (issue #1620).
• Fixed a bug in queries on map fields.
• Fixed a bug in updating an embedded object after GC of the containing entity (issue #1620).
• Fixed a bug incascading detach through unloaded inverse (mapped by) collection.

Version 2.6.1

• Added an option to disable temporary file deletion.
• Added support of using entity classes with missing dependent types.
• Added support of composite indexes with components of different lengths.
• Fixed a bug in reflection mode in detecting changes after flush (issue #1602).
• Fixed a NullPointerException is merging objects of new types.
• Fixed a bug in managing inverse (mapped by) collections and maps in reflection mode.

Version 2.6.0

• Added support of JPA 2.1 persistence.xml and orm.xml formats.
• Added implementation of equals to JPA Metamodel attributes.
• Fixed ObjectDB OSGi bundle to support enhanced classes.
• Fixed handling class loader switch (avoiding automatic database close and reopen).
• Fixed a NullPointerException on cascading persistence through a mapped by collection (issue #1563).
• Fixed a bug in using enhanced entity classes with is (boolean) persistent properties (issue #1561).
• Fixed porting to Java 8 of database file withunexpected HashMap.Entry as a listed type.
• Fixed return type of SUM queries on BigDecimal field (issue #1556).
• Fixed a client activation issue when accessing JPA Metamodel before connecting to a server.
• Fixed a NullPointerException during close (issue 1531).
• Fixed refresh of a new managed entity object after flush.