Fast Object Database for Java - with JPA/JDO support

ObjectDB ObjectDB

About Java

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24	writeExternal(arg0) Method java.io.Externalizable void writeExternal( ObjectOutput arg0 ) Parameters: arg0 -
24	writeExternal(arg0) Method java.io.Externalizable void writeExternal( ObjectOutput arg0 ) Parameters: arg0 -
24	writeExternal(arg0) Method java.io.Externalizable void writeExternal( ObjectOutput arg0 ) Parameters: arg0 -
24	writeExternal(arg0) Method java.io.Externalizable void writeExternal( ObjectOutput arg0 ) Parameters: arg0 -
24	writeExternal(arg0) Method java.io.Externalizable void writeExternal( ObjectOutput arg0 ) Parameters: arg0 -
18	JPA Persistable Types , Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String ... is an ordinary user defined Java class whose instances can be stored in the database. The easy way to declare ... an entity class is like any other Java class. It can extend either another entity class or a non-entity
14	JPA / JDO Class Enhancer . Command Line Enhancement ObjectDB Enhancer is a Java console application. It is contained in the objectdb.jar file. You can run it from the command line as follows: > java -cp objectdb.jar com.objectdb ... reserved. Usage: java com.objectdb.Enhancer [ \| \| ] ...
14	ObjectDB Object Database Features Requirements Windows, Linux, Unix, Mac OS, and any other environment with Java SE support. Java SE 6 /Java EE 6 ... APIs ObjectDB is the only Object-Oriented Database with built in support for JPA 2. Java Persistence ... - see issue tracking (requires login). Java Data Objects (JDO) Complete JDO 2 support (passed the JDO 2
12	Literals in JPQL and Criteria Queries Literals in JPQL, as in Java, represent constant values. JPQL supports various types of literals ... Java and SQL. Since JPQL is case insensitive, NULL, null and Null are equivalent. Notice that comparison with NULL in JPQL follows the SQL rules for NULL comparison rather than the Java rules, as
11	java.lang.ClassCastException: CriteriaQueryImpl cannot be cast to java.util.List java.lang.ClassCastException: CriteriaQueryImpl cannot be cast to java.util.List

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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About ObjectDB	Getting Started	Support
DBMS Features	Quick Tour with JPA	ObjectDB FAQ
Editions and Prices	JPA Console Tutorial	ObjectDB Manual
Licence	Web App Tutorial	Forum
Attributions	Java EE JPA Tutorial	Issue Tracking
Privacy	Spring MVC JPA Tutorial	Website Search
Terms of Use	Download ObjectDB	Contact Us

Copyright © 2003, 2010, 2020 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.