Java Open Source Projects Directory

...dedicated into Java open source projects

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Persistence Frameworks

ojb

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

 

castor

Castor is an open source data binding framework for Javatm?. It's basically the shortest path between Java objects, XML documents and SQL tables. Castor provides Java to XML binding, Java to SQL persistence, and then some more.

 

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.

 

jdbcpersistence

JDBCPersistence is yet another OR mapping layer. It differs from its peers in both implementation and API. Using bytecode generation at its core the framework generates classes that implement JDBC Logic which is specific to a table/bean pair. JDBCPersistence generates persistor classes at runtime on demand incurring no noticeable overhead on the development process. The entire framework configuration is done via API, which significantly improves start-up time and reduces library size.

 

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.

 

speedo

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

 

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.

 


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