Open Source Java Object Oriented Software for BSD

db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)

JPOX was an Apache2 licensed standards-driven Java persistence implementation. It is replaced by DataNucleus http://www.datanucleus.org

JoSQL (Java Objects SQL) provides SQL capabilities for querying, ordering and grouping of collections of Java objects (POJOs). It allows a SQL statement to be applied to the collection of objects and the matching set returned, ordered and grouped.

Bridge To Babylon is a java object relational mapper (java ORM). It is intended to be lightweight and easy to use.

Now stored at https://github.com/gregorydgraham/DBvolution Available from Maven Central: nz.co.gregs.dbvolution Makes relational data easy and fast to use with semantic annotations and encapsulated datatypes. Simple declaration of a DB table: @DBTableName("mytable") public class MyTable extends DBRow { @DBColumn("numeric_code") @DBForeignKey(Code.class) private DBNumber numericCode = new DBNumber(); @DBColumn("uid_mytable") @DBPrimaryKey @DBAutoIncrement private DBNumber uidMyTable = new DBNumber(); } Easy Gets: List<MyTable> myRows = myDB.get(new MyTable()); MyTable row = myDB.getDBTable(new MyTable()).getByPrimaryKey(61176904); Natural and Outer Joins and Criteria: CarCo carCo = new CarCo(); carCo.name.isLiterally("GM"); List<DBQueryRow> results = myDB.get(carCo, new Marque()); dbQuery.addOptional(new CarModel()); Easy debugging: query.getSQLForQuery(); Simple processing: db.print(query.getAllRows()); List<Marque> marques = query.getAll

jPersist is an extremely powerful object-relational database persistence API that manages to avoid the need for configuration and annotation. jPersist uses JDBC and can work with any database supported by JDBC and any type of connection resource.

The Adept Library contains a lightweight Java Object database for stand-alone applications. It is designed for simplicity of use, exposing a simple DTO - no need for copy logic or complex serialisation techniques. It is also a powerful general library.

Beagle is a Java lightweight framework to fetch database entries in an optimized data structure.It can be useful in those application that need to a fast data access.It is designed around Agile Methodologies with pattern of Test Driven Development.

BuzzSQL is a thin layer over Java JDBC that manages automatic configuration of database connection setup, pooling, configuration, logging, and statement handling.

Catnap is a lightweight Java persistence layer which stores and retrieves objects from an Oracle database using PL/SQL packages.

By allowing you to simply and efficiently move data from Relational to Java Objects to XML and back again, Hydrate gives you the tools to merge, manipulate and report on data from your strategic and legacy reference data, and enterprise data warehouses.

JXmlSql is a Java database API ( MySql, Oracle, Access )that eliminates JDBC code. JXmlSql allows developers to define application and prepopulation SQL statements inside xml files. Options for query, insert, update, delete, report and prepopulation SQL.

MOFISP is (another) relational object mapper. The purpose is to create an object oriented view over legacy bases.

Java Object and Relation Persistence framework. No mapping configuration needed! Automatic mapping of object relations, inheritance, arrays ++. Also includes a DB-version migration framework. Powerful, yet easy to use.

MAOS (Meta-Attribute Object Store) is a light-weight Java library / framework implementing simple Object persistence using search-engine technology

Java Component created to persist and work with trees (it doesn't matter the type of persistence). Based on "Nested Set Model of Hierarchies" by Joe Celko. [Componente Java para persistir y trabajar con árboles (no importa el tipo de persistencia)]

OO7J is a Java version of the original OO7 benchmark (written in C++) from Mike Carey, David DeWitt and Jeff Naughton = Univ Wisconsin-Madison.The original benchmark tested ODBMS performance. This project also includes benchmarking ORM Tools

An object to relational database mapping framework, using the new JDK1.5 annotations, that fully manages the database. The programmers that are going to use this ORM should not even be concerned with the physical relational database.

A complete, fast, previously commercial, JDO 1.0.1 implementation for databases, opened by Versant in 2005 and then abandoned in early 2006. The design-time code is already in Eclipse Dali. This project is the original source drop, including the runtime.

Oxygen Persistence Framework (http://oxygen.io) - highly flexible, high performance, layered object relational mapping framework with clustered loading, oosql and pluggable feature architecture. It is used in large projects already.

Persitancy api simaler to Prevailer but with more transparancy and less intrusiv to how you can disign your data structure. It uses a bytecode enhancer to add needed code to have your object presited betwhen sessions.

PeristenteDaten is an object oriented database interface for the programming language java. It makes it possible to persistently save, load and update objects in a database without knowledge about jdbc and SQL.

A fully automated database benchmark suite that prints tabular and graphic results for multiple tested disciplines, given JDBC database connections. Some free open source database engines are included.

SQLOrm focuses on mediating database interaction rather than shielding the user from it. SQLOrm consists of 3 major parts. A dynamic query builder. A prepared statement layer. A resultset to object graph mapper, supporting batch inserts/updates.

Salto Persistence is a object/relational persistence framework for a J2EE environment. It comes with Salto-db generator which uses a templates mechanism to generate Salto-db Dataobjects from any existing JDBC-supported Database.