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34

Column.name

Annotation Element javax.persistence.Column String name (Optional) The name of the column. Defaults to the property or field name. Default value: "" Since: JPA 1.0
34

QueryHint.name

Annotation Element javax.persistence.QueryHint String name Name of the hint. Since: JPA 1.0
34

ColumnResult.name

Annotation Element javax.persistence.ColumnResult String name (Required) The name of a column in the SELECT clause of a SQL query Since: JPA 1.0
34

PersistenceContext.name

Annotation Element javax.persistence.PersistenceContext String name (Optional) The name by which the entity manager is to be accessed in the environment referencing context; not needed when dependency injection is used. Default value: "" Since: JPA 1.0
34

DiscriminatorColumn.name

Annotation Element javax.persistence.DiscriminatorColumn String name (Optional) The name of column to be used for the discriminator. Default value: "DTYPE" Since: JPA 1.0
34

FieldResult.name

Annotation Element javax.persistence.FieldResult String name Name of the persistent field or property of the class. Since: JPA 1.0
34

NamedNativeQuery.name

Annotation Element javax.persistence.NamedNativeQuery String name The name used to refer to the query with the EntityManager methods that create query objects. Since: JPA 1.0
3

Constants.SERVICE_LOOKUP_PMF_RESOURCE_NAME

Static Field javax.jdo.Constants String SERVICE_LOOKUP_PMF_RESOURCE_NAME The name of the standard service configuration resource text file containing the name of an implementation of PersistenceManagerFactory. Constant value is META-INF/services/javax.jdo.PersistenceManagerFactory. Since: JDO 2.1
3

getPersistenceManagerFactory(overrides, name)

Static Method javax.jdo.JDOHelper PersistenceManagerFactory getPersistenceManagerFactory( Map overrides, String name ) Returns a named PersistenceManagerFactory or persistence unit. Parameters: overrides - name - Since: JDO 2.1 See Also: getPersistenceManagerFactory(Map,String,ClassLoader,ClassLoader)
3

Constants.ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME

Static Field javax.jdo.Constants String ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME The name of the anonymous PersistenceManagerFactory, which is the empty string. Since: JDO 2.1

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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Which JPA is Faster?

 

See a comparison of Hibernate, EclipseLink, OpenJPA, DataNucleus, MySQL, PostgreSQL, Derby, HSQLDB, DB4O by Versant, H2 Database, SQLite and ObjectDB

in the JPA Benchmark.

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.