Fast Object Database for Java - with JPA/JDO support

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18

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
18

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
18

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 ... key Returns: the corresponding persistent instance Since: JDO 2.0
18

LongIdentity(pcClass, key)

Constructor javax.jdo.identity.LongIdentity LongIdentity( Class pcClass, Long key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0
18

ShortIdentity(pcClass, key)

Constructor javax.jdo.identity.ShortIdentity ShortIdentity( Class pcClass, Short key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0
18

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
18

getUserObject(key)

Method javax.jdo.PersistenceManager Object getUserObject( Object key ) Get the value for the specified key from the map of user objects. Parameters: key - the key of the object to be returned Returns: the object Since: JDO 2.0
18

IntIdentity(pcClass, key)

Constructor javax.jdo.identity.IntIdentity IntIdentity( Class pcClass, Integer key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0
18

IntIdentity(pcClass, key)

Constructor javax.jdo.identity.IntIdentity IntIdentity( Class pcClass, int key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0
18

StringIdentity(pcClass, key)

Constructor javax.jdo.identity.StringIdentity StringIdentity( Class pcClass, String key ) Constructor with class and key. Parameters: pcClass - the class key - the key Since: JDO 1.0

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

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