Greetings, I have a package that implements JPA like annotations for Jena. However, it takes a twist on JPA by assuming that the data are in models not in a database and so there are some interesting differences like the ability to remove one object from a set of objects that match <subject, predicate, ?o>.
The net result is a set of 3 annotations (Subject, Predicate and URI) that can be applied to an interface and an EntityManager that converts Resource objects into the interface implementation using dynamic proxies. for example: @Subject( namespace="http://example.org/book/";) interface Book { @Predicate( namespace="http://purl.org/dc/elements/1.1/"; ) void setTitle(String newTitle); String getTitle(); Boolean hasTitle() @Predicate( namespace="http://purl.org/dc/elements/1.1/"; ) void setTitle(String newTitle); String getTitle(); Boolean hasTitle() } Would allow you to call Resource r = .... // read resource from book example model Book book= EntityManager.read( r, Book.class ) book.setTitle( "My Fair Lady" ); I have a set of 88 test cases that validate the parsing of the Subject annotated classes and the implementation of the dynamic proxies. The implementation covers all basic java types (including primitives) and the ability to retrieve other annotated Classes. For example @Subject( namespace="http://example.org/library/ <http://example.org/book/> ") interface Library { @Predicate void addHolding(Book book); void removeHolding( Book book ); ExtendedIterator<Book> getHolding(); Boolean hasHolding(Book book ); } Would create a Library class that has multiple Books listed in its holding. I am going to release this as open source in the near future and am wondering if anyone has any interest in using this. Claude -- I like: Like Like - The likeliest place on the web<http://like-like.xenei.com> Identity: https://www.identify.nu/[email protected] LinkedIn: http://www.linkedin.com/in/claudewarren
