Hi Jeremy, On Mon, Jan 31, 2011 at 10:39 PM, Jeremy Bauer <[email protected]> wrote:
> Hi Umashanthi, > > Thanks for your interest in OpenJPA. I'm glad you were able to get the > code > and get it building. Besides reading the spec, the OpenJPA quick start > guide[1] (especially the examples) is a good place to start. > > Here is one SoC project idea... > > The JPA specification includes many annotations for the specification of > metadata and mapping information within Java classes. In addition, the > spec > provides a means to supply the same information within XML configuration > files (orm.xml). One primary benefit of XML config files is it allows > modification of the ORM information without needing to recompile the source > code. > > OpenJPA has many custom metadata and mapping annotations that can be used > to > provided functionality beyond the JPA specification. However, these > extensions are available only through annotations. There is currently no > means to specify the metadata or mapping extensions via XML. We've had > several requests for this capability, but it hasn't seen much/any activity. > > In part, this effort would include: > > 1) Understanding OpenJPA's annotatation extensions. > 2) Determining which annotations make sense to provide in XML configuration > 3) Designing a schema for the XML-based configuration file > (openjpa-orm.xml?) > 4) Creating metadata and mapping parsers for the new XML mapping file > 5) Wiring the new parsers into the existing code path. > > I think this would make a good SoC project because: > > 1) The work is well defined and fairly self contained. > 2) It would be a good experience in adding additional capabilities to a > mature piece of software. > 3) It wouldn't require spending much/any time trying to understand OpenJPA > internals - which can be very time consuming. Instead, you'll be learning > about JPA and OpenJPA's powerful extensions - especially by learning what > the extensions do and writing jUnits to test the capability via XML > mappings. > 4) This activity can be ongoing. Not all extensions need to be immediately > available. Once the base framework is available, incomplete extensions can > be added in the future. (ie. this effort does not have to be fully > complete by the end of the SoC in order to be beneficial) > > Here are some links to the annotation extensions in JavaDoc: > > > http://openjpa.apache.org/builds/latest/docs/javadoc/org/apache/openjpa/persistence/package-summary.html- > Annotation Types Summary section > > > http://openjpa.apache.org/builds/latest/docs/javadoc/org/apache/openjpa/persistence/jdbc/package-summary.html- > Annotation Types Summary section > > If you are interested, I'd be happy to send you additional information to > help you make a better evaluation and/or get started. > Thank you very much for your valuable time in giving me a very good insight of the project idea. I am so glad to receive your mail. This idea seems very much interesting to me because of the facts you mentioned and my interests in XML & annotations. I strongly believe that it will be a good opportunity for me to get started with OpenJPA, by working on this project. I will go through the resources you've provided and will get back with my questions/clarifications. Also I would like your help in getting additional information as and when required. Thank you again for your great support. Thanks, ~Umashanthi > > -Jeremy > > [1] http://openjpa.apache.org/quick-start.html > > On Sun, Jan 30, 2011 at 2:53 AM, Umashanthi Pavalanathan < > [email protected]> wrote: > > > Hi devs, > > > > I am an undergraduate student interested in contributing to OpenJPA and > > would like to know whether you have any ideas for Google Summer of Code > > 2011. > > > > I have checked out the source code and successfully built it with the > help > > of Mark. Currently I am in the process of studying the Java Persistence > API > > using the OpenJPA user guide. Any suggestions and links to resources that > > would help me understand the concepts and get started with OpenJPA? > > > > > > Thanks in advance, > > ~Umashanthi > > >
