Java Open Source Projects Directory

...dedicated into Java open source projects

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Persistence Frameworks

pat

PAT stands for "Persistent Applications Toolkit". Like many other software it simplifies developing of persistence layers of business applications. It does it by providing object-oriented environment for persistence of your objects: POJOs And.. it really does it. PAT provides almost transparent data layer for a business application. It employs state-of-the-art techniques to achieve it. These are OO, AOP (JBossAOP), Java, Prevayler, Ant, JUnit, Log4j, @@annotations and others. It cooperates well with web applications: Struts (and possibly other web frameworks), Tomcat, JBoss AS. (AOP term: persistence aspect)

 

space4j

Space4J (or S4J, for short) is a free prevalence implementation in Java. Prevalence is a concept started by Klaus Wuestefeld on how to store data in a real object oriented way, using only memory snapshots, transaction logs and serialization. In addition to the basic functionality it offers transparent support for clustering, passivation and indexing.

 

cayenne

Cayenne is a powerful, full-featured Java Object Relational Mapping framework. It is open source and completely free. One of the main Cayenne distinctions is that it comes with cross-platform modeling GUI tools. This places Cayenne in the league of its own, making it a very attractive choice over both closed source commerical products and traditional "edit your own XML" open source solutions.

 

jdbm

JDBM is a transactional persistence engine for Java. It aims to be for Java what GDBM is for other languages (C/C++, Python, Perl, etc.): a fast, simple persistence engine. You can use it to store a mix of objects and BLOBs, and all updates are done in a transactionally safe manner. JDBM also provides scalable data structures, such as HTree and B+Tree, to support persistence of large object collections.

 

simpleorm

SimpleORM is Java Object Relational Mapping open source project (Apache style licence). It provides a simple but effective implementation of object/relational mapping on top of JDBC at low cost and low overhead. Not even an XML file to configure!

 

beankeeper

NetMind BeanKeeper is an O/R (object/relation) mapping library. Its task is to map java objects to a relational database, and to offer a powerful query service to retrieve them.

 

speedo

Speedo is an open source implementation of the JDO (TM) specification.

 

jpox-java-persistent-objects

JPOX is a full compliant implementation of Java Data Objects (JDO) API. The JDO API is a standard interface-based Java model abstraction of persistence. JPOX is free and released under an OpenSource license, and so the source code is available for download along with the JDO implementation.

 


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