Apache ObJectRelationalBridge Bridging Java Objects and Relational Databases
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Apache ObJectRelationalBridge Tags

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Apache ObJectRelationalBridge Description

Apache ObJectRelationalBridge (OJB) is an Object/Relational mapping tool that provides transparent transactional persistence for Java Objects against relational databases. OJB provides ODMG and JDO interfaces. OJB has been designed for a large range of applications, from embedded systems to rich client application to multi-tier J2EE based architectures. OJB integrates smoothly into J2EE Application servers. It supports JNDI lookup of datasources. It ships with full JTA and JCA integration. OJB can be used within JSPs, Servlets and SessionBeans. OJB provides special support for Bean Managed EntityBeans (BMP). OJB uses an XML based Object/Relational mapping. The mapping resides in a dynamic MetaData layer, which can be manipulated at runtime through a simple Meta-Object-Protocol (MOP) to change the behaviour of the persistence kernel. OJB provides several advanced O/R features like Object Caching, lazy materialization through virtual proxies and distributed lock-management with configurable Transaction-Isolation levels. Optimistic and pessimistic locking is supported. OJB provides a flexible configuration and plugin mechanism that allows to select from set of predefined components or to implement your own extensions and plugins. Give Apache ObJectRelationalBridge a try to see how useful it can actually be for you!

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