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Manual
17

Database Management Settings

Explains settings and performance tuning of the ObjectDB Java object database for JPA/JDO.
JDO Doc
15

addExtension(key, value)

Method javax.jdo.Query void addExtension(   String key,   Object value ) Add a vendor-specific extension to this query. The key and value are not standard. An implementation must ignore keys that are not recognized. Parameters: key - the key of the extension value - the value of the extension Since: JDO 2.0
JDO Doc
15

Key.deleteAction

Annotation Element javax.jdo.annotations.Key ForeignKeyAction deleteAction Delete action to apply to the foreign key for the key. Returns: delete action to apply to the foreign key for the key Default value: javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED Since: JDO 2.1
JDO Doc
15

Key.updateAction

Annotation Element javax.jdo.annotations.Key ForeignKeyAction updateAction Update action to apply to the foreign key for the key. Returns: update action to apply to the foreign key for the key Default value: javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED Since: JDO 2.1
Manual
15

JPA Persistable Types

, however, do not have an identity (primary key) of their own which leads to some limitations (e.g ... and arrays and keys and values in maps) are either null values or instances of persistable types. In
Result
15

What is new in ObjectDB 2.0?

ObjectDB 2.0 supports many new features and improvements, including: Most of the features of the new JPA 2.0 and JDO 2.2 APIs. User defined IDs (primary key) and sequences. Support of unlimited index keys size. SQL like queries ("select from ... where ..."). Real non blocking multithreading in
JDO Doc
15

ByteIdentity(pcClass, key)

Constructor javax.jdo.identity.ByteIdentity ByteIdentity(   Class pcClass,   Byte key ) Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0
JDO Doc
15

CharIdentity(pcClass, key)

Constructor javax.jdo.identity.CharIdentity CharIdentity(   Class pcClass,   char key ) Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0
JDO Doc
15

CharIdentity(pcClass, key)

Constructor javax.jdo.identity.CharIdentity CharIdentity(   Class pcClass,   Character key ) Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0
JDO Doc
15

getObjectById(cls, key)

Method javax.jdo.PersistenceManager T getObjectById(   Class cls,   Object key ) Looks up the instance of the given type with the given key. Parameters: cls - The type of object to load key ... identity key Returns: the corresponding persistent instance Since: JDO 2.0