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3

javax.persistence.AccessType

javax.persistence Enum AccessType java.lang.Object java.lang.Enum<javax.persistence.AccessType> javax.persistence.AccessType Implemented Interfaces: Serializable, Comparable<AccessType> Is used with the Access annotation to specify an access type to be applied to an entity class
3

javax.persistence.QueryTimeoutException

: Serializable Thrown by the persistence provider when a query times out and only the statement
3

javax.persistence.FetchType

javax.persistence Enum FetchType java.lang.Object java.lang.Enum<javax.persistence.FetchType> javax.persistence.FetchType Implemented Interfaces: Serializable, Comparable<FetchType> Defines strategies for fetching data from the database. The EAGER strategy is a requirement
3

javax.persistence.PersistenceException

javax.persistence Exception PersistenceException java.lang.Object java.lang.Throwable java.lang.Exception java.lang.RuntimeException javax.persistence.PersistenceException Implemented Interfaces: Serializable Subclasses: EntityExistsException
3

javax.persistence.metamodel.PluralAttribute.CollectionType

javax.persistence.metamodel Enum PluralAttribute.CollectionType java.lang.Object java.lang.Enum<javax.persistence.metamodel.PluralAttribute.CollectionType> javax.persistence.metamodel.PluralAttribute.CollectionType Implemented Interfaces: Serializable, Comparable<CollectionType
3

javax.persistence.OptimisticLockException

Interfaces: Serializable Thrown by the persistence provider when an optimistic locking conflict occurs
0

javax.jdo.identity.CharIdentity

javax.jdo.identity Class CharIdentity java.lang.Object javax.jdo.identity.SingleFieldIdentity javax.jdo.identity.CharIdentity Implemented Interfaces: Externalizable, Serializable, Comparable This class is for identity with a single character field. Since: JDO 1.0 CharIdentity
0

javax.jdo.identity.StringIdentity

javax.jdo.identity Class StringIdentity java.lang.Object javax.jdo.identity.SingleFieldIdentity javax.jdo.identity.StringIdentity Implemented Interfaces: Externalizable, Serializable, Comparable This class is for identity with a single String field. Since: JDO 1.0 StringIdentity
0

javax.jdo.ObjectState

javax.jdo Enum ObjectState java.lang.Object java.lang.Enum<javax.jdo.ObjectState> javax.jdo.ObjectState Implemented Interfaces: Serializable, Comparable<ObjectState> This class defines the object states for JDO instances. Since: JDO 1.0 ObjectState DETACHED_CLEAN Since: JDO 1.0
0

javax.jdo.identity.ObjectIdentity

javax.jdo.identity Class ObjectIdentity java.lang.Object javax.jdo.identity.SingleFieldIdentity javax.jdo.identity.ObjectIdentity Implemented Interfaces: Externalizable, Serializable, Comparable This class is for identity with a single Object type field. Since: JDO 1.0 ObjectIdentity

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.

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Copyright © 2003, 2010, 2023  ObjectDB Software, all rights reserved. The JPA API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the open source JPA 2 RI (EclipseLink) and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0. The JDO API Reference Documentation (JavaDoc) on this website is derived with some adjustments from the JDO 2.2 API and is available under the terms of the Apache License, v. 2.0. Images on this website are available under these licecnes. Documentation on this website explains how to use JPA in the context of the ObjectDB Object Database but mostly relevant also for ORM JPA implementations, such as Hibernate (and HQL), EclipseLink, TopLink, OpenJPA and DataNucleus. ObjectDB is not an ORM JPA implementation but an Object Database (ODBMS) for Java with built in JPA 2 support.