International Business Machines Corporation

Alan Iain Boyle

Sridhar Sudarsan

Geoffrey Martin Hambrick

Martin James Smithson

Kenneth A Chupa

A system for navigating relationships between beans using filters and container managed relationships is provided. With the system, filters are specified in the relationship definition of a deployment descriptor of a bean. The filters generate additional predicates to the WHERE clauses in SQL SELECT statements generated based on the contents of the deployment descriptor. Moreover, these filters may be defined such that method parameters may be passed into the resulting deployed code to thereby make them more flexible. Therefore, with the system, rather than defining filters programmatically in methods of a bean's implementation class, filters are defined declaratively in the deployment descriptor of the bean. Since these filters are specified in the deployment descriptor of the bean, they are accessible to clients of the bean through the local interface.

System for navigating beans using filters and container managed relationships

A method for navigating relationships between beans using filters and container managed relationships is provided. With the method, filters are specified in the relationship definition of a deployment descriptor of a bean. The filters generate additional predicates to the WHERE clauses in SQL SELECT statements generated based on the contents of the deployment descriptor. Moreover, these filters may be defined such that method parameters may be passed into the resulting deployed code to thereby make them more flexible. Therefore, with the method, rather than defining filters programmatically in methods of a bean's implementation class, filters are defined declaratively in the deployment descriptor of the bean. Since these filters are specified in the deployment descriptor of the bean, they are accessible to clients of the bean through the local interface.

Method for navigating beans using filters and container managed relationships

Mapping Enterprise Java Bean ('EJB') attributes to database schema including providing a first metamap including one or more abstracted variable characteristics of a first database schema and creating from the first metamap a second metamap for a second database schema including varying one or more of the abstracted variable characteristics to conform to the second database schema. Typical embodiments also include synchronizing, in response to methods invoked on the EJB and in dependence upon the second metamap, the state of the EJB with a persistent data store having the second database schema. In typical embodiments, synchronizing the state of the EJB with a persistent data store having the second database schema also includes creating records, updating records, and deleting records in the persistent data store.

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Eastleigh, United Kingdom

Alan Iain Boyle