ObjectDB version 2.3.6

You should start by following a tutorial or reading the manual.

For upgrading from version 1.0 please read the upgrade instructions.

Version 2.3.6

• Improved performance of collection and map size evaluation in queries.
• Fixed a critical bug in page caching (issues #116, #119, #121).
• Fixed a bug in optimization of non ASCII string indexes.
• Fixed the new query HOUR function to return hours as 0 to 23 (using 24-hour clock).
• Fixed a regression bug in the default fetch policy.
• Fixed a new bug in retrieving byte[] (issue #120).
• Fixed a bug in LEFT OUTER JOIN.
• Fixed GROUP BY DATE(...) - merging AM and PM into the same date.

Version 2.3.5

• Added support of DATE(...) and TIME(...) methods in queries.
• Added new Explorer and Server exe (for Windows 7 and 64 bits).
• Fixed handling a Calendar parameter value in criteria queries.
• Fixed using type operator and literals in client server queries (issue #112).
• Fixed eager fetch issues.
• Fixed a bug in using type literals in queries.
• Fixed a bug in passing a new entity object with no id as a query argument.
• Fixed a bug in using TYPE in queries.
• Fixed a NullPointerException in query compilation (issue #111).
• Fixed an enhancement bug in reading special fields.
• Fixed map type parameters display in the Explorer schema window.
• Fixed merging a new entity object with application set primary key.

Version 2.3.4

• Added OSGi support.
• Added support of MEMBER OF for inverse (mapped by) collections.
• Changed logging of incomplete recovery records from WARNING to TRACE  (issue #88).
• Changed main configuration elements from required to optional.
• Fixed the "Negative snapshot user count" bug (issue #83).
• Fixed a page cache purge deadlock (issue #85).
• Fixed handling ;drop in client-server connection url.
• Fixed performance issue (fetch optimization) in range queries.
• Fixed cached result size evaluation to include query arguments (issue #91).
• Fixed a bug in using IS NULL in queries on new fields after schema change.
• Fixed an Explorer bug in using an entity class with ID class.

Version 2.3.3

• Improved compilation performance of OR queries with many elements.
• Fixed eager fetch of maps and nested embedded objects.
• Fixed a bug in removing a new flushed entity object before first commit (issue #86).
• Fixed a NullPointerException in accessing inverse (mapped by) collection fields with cascading persist after updating the database and before commit (issue #78).
• Fixed NullPointerException on accessing an inverse collection in an entity that has been garbage collected (issue #78).
• Added support of @Column(unique="true") and equivalent ORM XML (issue #79).
• Fixed @PrePersist on merge to be called after merging fields (issue #80).
• Fixed eager fetch of collections and maps of simple values (issue #81).
• Fixed a NullPointerException in enhancement of more than one class path root (issue #82).
• Fixed a NullPointerException on detachment of some objects.
• Fixed Linux "Name or service not known" error on server stop.

Version 2.3.2

• Fixed a bug in "p.id IN :ids" queries.
• Fixed a bug in handling NOT = queries (issue #77).
• Fixed ClassCastException and NullPointerException in using a composite index in queries (issue #74).
• Fixed Explorer bugs: editing embedded objects and using connection urls.
• Fixed a NullPointerException on using a collection in a detached object
  (issue #72).

• Fixed a bug of changing id type when an entity object is retrieved using find with a PK of a different type (e.g. Integer instead of Long) and then updated.
• Fixed retrieval with pessimistic lock to bypass cache and to force refresh.

Version 2.3.1

• Added support for using ObjectDB with JBoss AS 7.0.
• Sample databases (world.odb, points.odb) included in ObjectDB distribution.
• New default Explorer colors (apply with Tools > Options > Fonts > Reset All).
• New menu for accessing local databases (in $objectdb/db) in the Explorer.
• Improved UnsupportedOperationException error message.
• Fixed a pessimistic lock timeout bug (issue #70).
• Fixed a ClassCastException in using a composite index in queries (issue #71).
• Fixed handling derived Id fields in composite PK embedded IDs.
• Fixed default ObjectDB home path ($objectdb) in NetBeans RCP.
• Fixed a Doctor and Replication regression (Type session exceeds timeout).
• Removed Conflicting modifiers validation check and error message.

Version 2.3.0

• Added the ability to edit databases in the Explorer (issue #1).
• Added the ability to execute queries in the Explorer (issue #2).
• Other small Explorer improvements.
• Added support of IN operator in JPQL queries.
• Added support of ";drop" database url parameter.
• Adjusted the Enhancer to the new Java 7 class file format.
• Improved error message for invalid mapped by (inverse) fields (issue #64).
• Improved persisting byte[] by reducing required storage space.
• Removed a shutdown hook that leads to memory leak (issue #63).
• Completed missing documentation (e.g. UPDATE & DELETE queries).
• Fixed memory leak issues.
• Fixed server hang and deadlock issues.
• Fixed several NullPointerException bugs.
• Fixed the "Failed to generate dynamic type" exception.
• Fixed a bug in query plans that use an inherited index.
• Fixed bugs in queries on collections.
• Fixed evaluation of $temp in the configuration file.

Version 2.2.9

• Added new configuration to enable / disable auto serialization of non persistable types (now disabled by default).
• Added support of date methods (YEAR, MONTH, DAY, HOUR, MINUTE, SECOND).
• Added support of bypassing no arg constructors of entity classes.
• Added support of using persistent array fields with parameterized type.
• Added error on using transient fields (or properties) in queries.
• Added type information to enhancement exceptions.
• Improved support of non standard database file suffixes.
• Changed fetch of collection elements.
• Fixed an ArrayIndexOutOfBoundsException bug in using nested embedded objects. (issue #59).
• Fixed a JMX Remote - ObjectDB Enhancer Agent conflict.
• Fixed a ClassCastException bug in complex JOIN queries.
• Fixed a NullPointerException in querying an empty database.
• Fixed a online backup file lock problem.
• Fixed a bug in managing a new entity after an attempt to find it in the database.
• Fixed a bug in using LIKE in AND/OR in criteria queries.
• Fixed a bug in AND/OR grouping in criteria queries.
• Fixed a "Failed to write the value of field property" bug.

• Fixed a NullPointerException bug in query execution.

• Fixed a bug in using non managed non enhanced entity objects as parameters or in criteria queries (issue #54).
• Fixed a bug in using primary key in results of a JOIN query.
• Fixed a recursive @PreUpdate call bug (when the callback updates the entity).

Version 2.2.8

• Fixed a critical bug in extensive removal operations of large objects.
• Improved the performance of navigation through an inverse (mapped by) field if the owner field is indexed.
• Fixed a LEFT OUTER JOIN bug.
• Fixed a bug in parsing queries with parenthesis followed by NOT.

• Fixed a bug in running online backup with no arguments.

• Added option for running the Doctor without activating disabled indexes.

• Fixed a Doctor bug in fixing old (< 2.0) database files.

• Fixed a temporary file creation problem.
• Fixed a bug in size evaluation of cached query single results.
• Fixed internal NullPointerException-s (issues #51, #52, #53).

• Fixed a pessimistic locking deadlock (issue #50).

Version 2.2.7

• Added support of report generation using BIRT.
• Fixed a bug in query optimization of DISTINCT.
• Fixed a bug in keeping removed entity object in the L2 cache.
• Fixed orphan removal of owner entity object in bidirectional relationship.

• Fixed an "Attempt to persist a reference to a non managed instance" bug.

• Fixed internal NullPointerException (issue #49)
• Fixed internal ArrayIndexOutOfBoundsException.

• Fixed a conflict with IBM J9 JVM by disabling unsafe optimization.
• Fixed a bug in applying nested eager fetch when enhancement is disabled.
• Fixed the "Annotated methods must follow the JavaBeans naming convention" exception (issue #47).

Version 2.2.6

• Fixed the "Attempt to reuse an existing primary key value" after flush bug.
• Fixed a bug in tracking changes to collections of new flushed entity objects.
• Fixed generated value (ID allocation) bug with flush and in EJB containers.
• Fixed a NullPointerException on getObjectsById.
• Fixed a server freeze (no response) issue.

• Fixed a NullPointerException in metamodel with embedded ID (issue #43).
• Fixed an error message for invalid query parameter (issue @45).

• Fixed pom.xml files in the Maven tutorials to use Java 1.5 / 1.6.

Version 2.2.5

• Added support of navigation through collections (as a JPQL extension).
• Added version display to the Server and Explorer About dialog boxes.
• Fixed an UPDATE/DELETE query bug in client-server mode.
• Fixed an ArrayIndexOutOfBoundsException in retrieval of large objects.
• Fixed Explorer display of user defined serializable objects.
• Fixed a bug in using NOT NULL in criteria queries.
• Fixed a bug in using strings in criteria queries.
• Fixed a bug in collection change tracking in a new entity object.
• Fixed merging entity objects of another EntityManager.
• Fixed a bug in concurrent EntityManagerFactory instantiation.

• Fixed a bug in comparison of collections to values in queries.

Version 2.2.4

• Added support of JPA UPDATE and DELETE queries (issue #11).
• Added support of pessimistic lock timeout (javax.persistence.lock.timeout).
• Added implementation of the getParametersgetParameters()Query's methodGet the parameter objects corresponding to the declared parameters of the query.
  See JavaDoc Reference Page... method.
• Added exception on pessimistic locking retrieval with no active transaction.
• Improved support of entity objects in criteria queries.
• Improved Explorer performance by disabling EAGER fetch.
• Fixed critical bugs in using flush.
• Fixed bugs in cascading merge.
• Fixed a multithreading deadlock bug.
• Fixed a bug in using JOIN FETCH with DISTINCT.
• Fixed Metamodel API's getTypeId method to support single ID field.

Version 2.2.3

• Added support of @ElementCollectionjavax.persistence.ElementCollectionJPA annotationDefines a collection of instances of a basic type or embeddable class.
  See JavaDoc Reference Page... (for setting eager fetch of non entity collections, such as List<String>).
• Improved performance of eager fetch in queries.
• Added Maven build enhancement to the bundled examples.
• Fixed a schema evolution bug in renaming user types.
• Fixed a bug in handling schema evolution (regression of 2.2.0).

• Fixed a bug in queries on large objects.

• Fixed a bug in using persistent properties with incomplete enhancement.

Version 2.2.2

• Changed log format to include date and time.
• Changed class loader management.
• Fixed handling multiple order expressions in inverse (mapped by) fields.
• Fixed the behavior of CacheStoreMode setting in L2 shared cache.
• Fixed TreeSet and TreeMap element comparison bugs.
• Fixed an Explorer bug in opening tables for selected rows.

• Fixed a replication configuration error.

Version 2.2.1

• Added support for using ObjectDB with JBoss AS 6.0 / 6.1.

• Fixed several bugs in handling eager fetch.
• Fixed a pessimistic locking bug.

• Fixed a bug in using primary key fields in queries.

• Fixed a bug in queries on deleted objects before commit / flush.

Version 2.2.0

• Added full support of JPA 2 Criteria Queries API (issue #9)
• Added full support of JPA 2 Metamodel API (issue #8)
• Added non optional field validation (throwing an exception on null value).
• Improved ObjectDB Doctor to handle additional issues.
• Improved query execution planner.
• Improved cleanup and reusing space after index deletion.
• Changed default configuration (enabled recovery, disabled recording).
• Fixed a critical database structure bug (issue #36).
• Fixed a critical bug in schema evolution of modified ancestor classes.
• Fixed a bug in handling indexes in a new ancestor class.
• Fixed a query cache bug.
• Fixed several bugs in query processing and running.

• Fixed a query execution bug when index with null keys is used.
• Fixed a bug in tracking field changes when a new value is the default value.

• Fixed a bug in creation of unnecessary nonclosed files.
• Fixed a ClassLoader conflict when using GlassFish.

Version 2.1.1

• Fixed an Explorer bug in handling listeners and callbacks.
• Fixed a bug in using user/password url arguments multiple times.
• Fixed several bugs in query processing and running.

Version 2.1.0

• Added Online Backup utility (issue #15).
• Added Master-Slave Replication / Clustering (issue #16).
• Added a PDF version of the ObjectDB manual (included in the download).
• Added sample (tutorials) Maven projects (included in the download).
• Added support of disabling optimistic locking exceptions.
• Added support of url arguments (";user=admin;password=admin").
• Changed default to NonTransactionalWrite enabled (issue #31).
• Fixed a bug in distinct queries (duplicates due to bad optimization).
• Fixed a bug in viewing TreeSet and TreeMap in the Explorer.
• Fixed detachment of entities by replacing proxy objects with ordinary objects.
• Fixed a schema evolution bug when adding a new super entity class.

Version 2.0.5

• Fixed Java Agent / Java EE / Spring enhancement bug.
• Fixed a bug in merging detached entity objects.
• Fixed unexpected NullPointerException in client server mode.
• Fixed an exception in AVG query on non numeric values (issue #29).
• Fixed a bug in handling JOIN queries with primary key fields.

Version 2.0.4

• Added support for JTA and Java EE Containers (issue #7).
• Fixed a bug in indexing entity objects.
• Fixed a bug in fixing broken references in ObjectDB Doctor.
• Fixed a bug in modifying enhanced detached embedded objects.
• Fixed a spring transformer (LoadTimeWeaver) problem.
• Fixed a class loader issue when using GWT/Jetty.
• Fixed a bug in using fields of embedded primary key in JPQL queries.

Version 2.0.3

• Added support for serialization of inverse (mapped by) collection fields.
• Fixed some activations issues.

Version 2.0.2

• Fixed a bug in queries on embedded objects in C/S mode.
• Fixed a bug in setting log directory path (missing URL decoding).
• Fixed a bug in automatic byte code enhancement in Java EE server.
• Fixed a bug in multi variable queries.

Version 2.0.1

• Fixed a bug in lazy loading of instances of non enhanced classes.
• Fixed a bug in using the Replayer with no updates to the database.
• Fixed an activation bug.

Version 2.0.0

See the ObjectDB 2.0 release notes for details about previous changes.