Ojb

Ojb
Apache ObJectRelationalBridge
Developer(s) Apache Software Foundation
Stable release 1.0.4 / December 31, 2005; 5 years ago (2005-12-31)
Written in Java
Operating system Cross-platform
Type Object-relational mapping
License Apache License 2.0
Website http://db.apache.org/ojb/

Apache ObJectRelationalBridge (OJB) is an Object/Relational mapping tool that allows transparent persistence for Java Objects against relational databases.

Apache OJB was released on April 6th, 2005.[1]

Contents

Features

  • OJB is open source (open source code).
  • Is also lightweight and easy to use, because to implement a persistence layer, one must simply configure two files (see section below)
  • Easy to integrate into an existing application because it does not generate code.
  • Allows the use of different patterns of persistence: owner (PersistenceBroker API), JDO and Object Data Management Group (ODMG).

Configuration

At least two files are required to configure OJB:

  • OJB.properties
  • repository.xml

Allocation

For mapping a 1-1 relationship, for example, you have two tables: person and account. In this case, a person has an account and vice versa.

References

  1. ^ http://www.linuxtoday.com/developer/2005040602826NWSVDV - Linux Today - Internetnews.com: Apache releases Object Relational Bridge

See also

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External links

v · d · eApache Software Foundation
Top level projects
Jakarta Projects
Commons Projects
Lucene Projects
Hadoop Projects
  • HDFS
  • ZooKeeper
Other projects
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Apache Attic

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