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Persistence API (JPA) Java Data Objects ( JDO ) Using a standard Java API (JPA / JDO ) provides many benefits

persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects ( JDO ) standards, since ObjectDB is the first object oriented database with built in support of JPA and JDO

cascade settings. The "auto" value functions as "true" when using JDO and as "false" when using JPA ... of either global or local setting) should be applied during commit and flush. Note: Both JPA and JDO

- JPQL / SQL Set 2 - Java / JDO Less Than Less Than or Equal To = Equal = == Not Equal ... its own notation (which is also in use by JDOQL, the JDO Query Language). ObjectDB supports both forms

- managed only by standard Java APIs (JPA 2 / JDO 2). Extremely fast - faster than any other JPA / JDO

JDO Enum DiscriminatorStrategy java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations.DiscriminatorStrategy Enumeration of the discriminator strategy values. Since: JDO 2.1 Enum Constants CLASS_NAME Since: JDO 2.1 NONE Since: JDO 2.1 UNSPECIFIED Since: JDO 2.1 VALUE_MAP Since: JDO 2

JDO Enum IdentityType java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations.IdentityType Enumeration of the identity type values. Since: JDO 2.1 Enum Constants APPLICATION Since: JDO 2.1 DATASTORE Since: JDO 2.1 NONDURABLE Since: JDO 2.1 UNSPECIFIED Since: JDO 2.1 Public Static

JDO Annotation Index Target: ElementType.TYPE, ElementType.FIELD, ElementType.METHOD Implemented ... indexes. Corresponds to the xml element "index". Since: JDO 2.1 Public Annotation Attributes Column [] columns default {} Columns that compose this index. Since: JDO 2.1 String[] members default

JDO Enum InheritanceStrategy java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations.InheritanceStrategy Enumeration of the inheritance strategy values. Since: JDO 2.1 Enum Constants NEW_TABLE Since: JDO 2.1 SUBCLASS_TABLE Since: JDO 2.1 SUPERCLASS_TABLE Since: JDO 2.1 UNSPECIFIED

JDO Enum PersistenceModifier java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations ... . This corresponds to the "persistence-modifier" attribute of the "field" and "property" elements. Since: JDO 2.1 Enum Constants NONE Since: JDO 2.1 PERSISTENT Since: JDO 2.1 TRANSACTIONAL Since: JDO 2.1

JDO Annotation Sequence Target: ElementType.TYPE Implemented Interfaces: Annotation Annotation for a datastore sequence. Maps across to the JDO2 element "sequence". Since: JDO 2.1 Public Annotation Attributes String datastoreSequence default "" Name of the sequence in the datastore. Since: JDO 2.1

JDO Annotation Unique Target: ElementType.TYPE, ElementType.FIELD, ElementType.METHOD Implemented ... to avoid unique constraint violations. Corresponds to the xml element "unique". Since: JDO 2.1 Public ... . Since: JDO 2.1 String deferred default "" Whether this unique constraint is deferred until commit

JDO Interface AttachCallback This interface is used to notify instances of attach events. Since: JDO 2.0 Public Methods void jdoPostAttach (Object attached) This method is called during the execution of javax. jdo .PersistenceManager.makePersistent on the persistent instance after the copy

mode are discussed in Section 1.2 . Because the JDO API and the format of the database file ... to locate and load the odbse.jar and jdo .jar files. By default, server.exe starts the server using

JDO Method in javax. jdo .PersistenceManager T makePersistent (   T pc ) Make ... , it locates or instantiates a persistent instance with the same JDO identity as the detached instance ... of changes of the detached state, if the JDO implementation can determine that there were no changes

JDO Annotation Embedded Target: ElementType.FIELD, ElementType.METHOD Implemented Interfaces ... . Corresponds to the xml element "embedded". Since: JDO 2.1 Public Annotation Attributes Persistent [] members default {} Members for this embedding. Since: JDO 2.1 String nullIndicatorColumn default

JDO Annotation Extension Target: ElementType.TYPE, ElementType.FIELD, ElementType.METHOD Implemented Interfaces: Annotation Annotation for a JDO vendor extension. Corresponds to the xml element "extension". Since: JDO 2.1 Public Annotation Attributes String key default null The key

JDO Annotation FetchGroup Target: ElementType.TYPE Implemented Interfaces: Annotation Annotation for the fetch group of a class. Corresponds to the xml element "fetch-group". Since: JDO 2.1 Public ... this fetch group. Since: JDO 2.1 Persistent [] members default null Members (fields and properties

JDO Annotation FetchPlan Target: ElementType.TYPE Implemented Interfaces: Annotation Annotation ... -plan". Since: JDO 2.1 Public Annotation Attributes String[] fetchGroups default {} The fetch groups in this fetch plan. Since: JDO 2.1 int fetchSize default 0 The number of instances of multi-valued

JDO Enum NullValue java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations.NullValue ... of the "field" and "property" elements. Since: JDO 2.1 Enum Constants DEFAULT Since: JDO 2.1 EXCEPTION Since: JDO 2.1 NONE Since: JDO 2.1 Public Static Enum Methods: NullValue[] values () Returns

JDO Enum SequenceStrategy java.lang.Object ∟  java.lang.Enum ∟  javax. jdo .annotations.SequenceStrategy Enumeration of the sequence strategy values. Since: JDO 2.1 Enum Constants CONTIGUOUS Since: JDO 2.1 NONCONTIGUOUS Since: JDO 2.1 NONTRANSACTIONAL Since: JDO 2.1 Public Static Enum

JDO Interface AttachLifecycleListener Super Interfaces: InstanceLifecycleListener This interface is implemented by listeners to be notified of attach events. Since: JDO 2.0 Public Methods void ... is attached, via the javax. jdo .PersistenceManager.makePersistent method. The source instance

JDO Interface DeleteLifecycleListener Super Interfaces: InstanceLifecycleListener This interface is implemented by listeners to be notified of delete events. Since: JDO 2.0 Public Methods void ... , for example during javax. jdo .PersistenceManager.deletePersistent . This method is called

JDO Interface DetachCallback This interface is used to notify instances of detach events. Since: JDO 2.0 Public Methods void jdoPostDetach (Object detached) This method is called during the execution of javax. jdo .PersistenceManager.detachCopy on the detached instance after the copy

JDO Interface DetachLifecycleListener Super Interfaces: InstanceLifecycleListener This interface is implemented by listeners to be notified of detach events. Since: JDO 2.0 Public Methods void postDetach ( InstanceLifecycleEvent  event) This method is called during the execution of javax. jdo

JDO Method in javax. jdo .spi.StateManager Object getObjectId (   PersistenceCapable pc ) Return the object representing the JDO identity of the calling instance. If the JDO identity ... representing the JDO identity of the calling instance Since: JDO 1.0

JDO Method in javax. jdo .spi.StateManager Object getTransactionalObjectId (   PersistenceCapable pc ) Return the object representing the JDO identity of the calling instance. If the JDO identity is being changed in the current transaction, this method returns the current identity as

JDO Method in javax. jdo .PersistenceManager Query newQuery (   Object compiled ... the same JDO implementation. It might be active in a different PersistenceManager or ... , except for the candidate Collection or Extent . Parameters: compiled - another Query from the same JDO implementation Return: the new Query Since: JDO 1.0

JDO Method in javax. jdo .PersistenceManager Object getTransactionalObjectId (   Object pc ) The ObjectId returned by this method represents the JDO identity of the instance. The ObjectId is a copy (clone) of the internal state of the instance, and changing it does not affect the JDO

JDO Method in javax. jdo .PersistenceManager void makeTransient (   Object pc,  ... makeTransient(Object pc). The affected instance(s) lose their JDO identity and are no longer associated ... . The instances to be made transient do not need to implement the javax. jdo .spi.Detachable interface. Parameters

JDO Method in javax. jdo .PersistenceManager void makeTransientAll (   Object[] pcs ... as makeTransientAll(Object[] pcs). The affected instance(s) lose their JDO identity and are no longer ... the javax. jdo .spi.Detachable interface. Parameters: pcs - the root instances to make transient

JDO Method in javax. jdo .PersistenceManager void makeTransientAll (   boolean  ... as makeTransientAll(Object[] pcs). The affected instance(s) lose their JDO identity ... the javax. jdo .spi.Detachable interface. Parameters: pcs - the root instances to make transient

JDO Method in javax. jdo .PersistenceManager void makeTransientAll (   Collection pcs ... as makeTransientAll(Collection pcs). The affected instance(s) lose their JDO identity ... to implement the javax. jdo .spi.Detachable interface. Parameters: pcs - the root instances to make transient

JDO Method in javax. jdo .PersistenceManager T[] detachCopyAll (   T... pcs ) Detach ... for serialization and manipulation outside of a JDO environment. When detaching instances, only fields in ... - if any of the instances to be detached do not implement the javax. jdo .spi.Detachable interface. See Also: makePersistentAll (Object[]) getFetchPlan Since: JDO 2.0

JDO Method in javax. jdo .PersistenceManagerFactory void setConnectionFactory (   Object connectionFactory ) Set the data store connection factory. JDO implementations will support specific connection factories. The connection factory interfaces are not part of the JDO specification

JDO Method in javax. jdo .PersistenceManagerFactory void setConnectionFactory2 (   Object ... environments to get nontransactional connections for optimistic transactions. JDO implementations will support specific connection factories. The connection factory interfaces are not part of the JDO

JDO Annotation Order Target: ElementType.FIELD, ElementType.METHOD Implemented Interfaces ... ". Since: JDO 2.1 Public Annotation Attributes String column default "" The name of the column to use for ordering the elements of the member. Since: JDO 2.1 Column [] columns default {} The definition

JDO Annotation PrimaryKey Target: ElementType.TYPE, ElementType.FIELD, ElementType.METHOD ... of a secondary table. Corresponds to the xml element "primary-key". Since: JDO 2.1 Public Annotation Attributes String column default "" Name of the column to use for the primary key Since: JDO 2.1 Column

JDO Method in javax. jdo .listener.AttachCallback void jdoPostAttach (   Object attached ) This method is called during the execution of javax. jdo .PersistenceManager.makePersistent ... -attached) instance that was attached in the call to {@link javax. jdo .PersistenceManager#makePersistent} . Since: JDO 2.0

JDO Interface ClearLifecycleListener Super Interfaces: InstanceLifecycleListener This interface is implemented by listeners to be notified of clear events. Since: JDO 2.0 Public Methods void ... method is invoked on the instance and the fields have been cleared by the JDO implementation

JDO Method in javax. jdo .listener.StoreLifecycleListener void preStore (    ... . jdo .PersistenceManager.flush or javax. jdo .Transaction.commit . It is called before the method StoreCallback.jdoPreStore is invoked. Parameters: event - the store event. Since: JDO 2.0

JDO Method in javax. jdo .listener.StoreLifecycleListener void postStore (    ... . jdo .PersistenceManager.flush or javax. jdo .Transaction.commit . It is called after the field values have been stored. Parameters: event - the store event. Since: JDO 2.0

JDO Method in javax. jdo .spi.PersistenceCapable Object jdoGetTransactionalObjectId () Return a copy of the JDO identity associated with this instance. This method is the same as jdoGetObjectId if the identity of the instance has not changed in the current transaction. If the JDO identity

JDO Method in javax. jdo .spi.PersistenceCapable boolean jdoIsDirty () Tests whether this object ... the current transaction. See Also: javax. jdo .JDOHelper.isDirty (Object pc) javax. jdo .JDOHelper.makeDirty (Object pc,String fieldName) jdoMakeDirty (String fieldName) Since: JDO 1.0

JDO Method in javax. jdo .JDOException Throwable initCause (   Throwable cause ) JDK 1.4 includes a new chaining mechanism for Throwable, but since JDO has its own "legacy" chaining ... a JDOFatalInternalException. Parameters: cause - ignored. Return: never. Since: JDO 1.0

JDO Static Method in javax. jdo .JDOHelper Object getTransactionalObjectId (   Object pc ) Return a copy of the JDO identity associated with the parameter instance. Parameters: pc ... in this transaction. See Also: PersistenceCapable() PersistenceManager.getObjectById (Object oid,boolean validate) Since: JDO 1.0

JDO Static Method in javax. jdo .JDOHelper boolean isDirty (   Object pc ) Tests whether the parameter instance is dirty. Instances that have been modified, deleted, or newly ... . jdo .spi.StateManager.makeDirty (PersistenceCapable pc,String fieldName) PersistenceCapable() Since: JDO 1.0

JDO Method in javax. jdo .PersistenceManager void close () Close this PersistenceManager ... might be garbage collected, at the option of the JDO implementation. Before being used ... to their values as specified in the PersistenceManagerFactory . This method closes the PersistenceManager . Since: JDO 1.0

JDO Method in javax. jdo .PersistenceManager void makeTransient (   Object pc ) Make ... its JDO identity and it is no longer associated with any PersistenceManager . The state of fields is preserved unchanged. Parameters: pc - the instance to make transient. Since: JDO 1.0

JDO Method in javax. jdo .PersistenceManager void makeTransientAll (   Object... pcs ... . The instances lose their JDO identity and they are no longer associated with any PersistenceManager . The state of fields is preserved unchanged. Parameters: pcs - the instances to make transient. Since: JDO 1.0