Glad to see this, and I hope you'll be able to take advantage of the secondary index features coming in 0.7.
Supporting different lower-level "drivers" seems like wasted effort to me, fwiw. On Sat, Jul 31, 2010 at 8:54 AM, Sanjay Sharma <sanjay.sha...@impetus.co.in> wrote: > Hi All, > > We are happy to announce and share a new ORM over Cassandra – kundera > > The project is Apache licensed and hosted at http://kundera.googlecode.com > > > > The project uses custom Cassandra Annotations and is fully JPA 1.0 > compliant. @ColumnFamily and @SuperColumnFamily are the main Cassandra > specific annotations. > > > > Search/Indexing is automatically included by using “Lucandra” and drives the > JPA-QL query support. Use of Lucandra also enables users to write Lucene > queries along with JPA-QL queries. > > > > As per the main author of kundera – Animesh -“ The idea behind Kundera is to > make working with Cassandra drop-dead simple and fun. Kundera does not > reinvent the wheel by making another client library; rather it leverages the > existing libraries and builds - on top of them - a wrap-around API to help > developers do away with unnecessary boiler plate codes, and program a > neater-and-cleaner code that reduces code-complexity and improves quality. > And above all, improves productivity.” > > > > The current implementation uses the versatile “Pelops” library as the > underlying client API and plans are to add support for Hector and Thrift > clients as well. > > > > Here is a sample kundera Entity bean - > > @Entity > > @ColumnFamily(keyspace = "Keyspace1", family = "SimpleComment") > > public class SimpleComment { > > @Id > > private String id; > > @Column(name = "userId") > > private String userId; > > @Column(name = "comment") > > private String commentText; > > > > ...... > > } > > JPA queries are as simple as- > > Query query = entityManager.createQuery("SELECT c from SimpleComment > c where userId=’me’"); > > List<SimpleComment> list = query.getResultList(); > > > > There is already support for Spring based persistence integration like the > good old Spring+Hibernate integration and is as simple as this- > > <bean id="entityManagerFactory" > class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> > > <property name="persistenceUnitName" value="myPersistenceUnit"/> > > </bean> > > More examples are available in kundera’s wiki and Animesh’s blogs. The > spring integration example is here > > > > Regards, > > Sanjay Sharma > > iLabs, Impetus > > ________________________________ > Impetus is sponsoring 'Hadoop India User Group Meet Up'- a technology > un-conference on July 31, 2010 at Impetus Office, Noida. The event will shed > light on Hadoop technology and channelized efforts to develop an active > Hadoop community. > > Click http://www.impetus.com/ to know more. Follow our updates on > www.twitter.com/impetuscalling . > > > NOTE: This message may contain information that is confidential, > proprietary, privileged or otherwise protected by law. The message is > intended solely for the named addressee. If received in error, please > destroy and notify the sender. Any use of this email is prohibited when > received in error. Impetus does not represent, warrant and/or guarantee, > that the integrity of this communication has been maintained nor that the > communication is free of errors, virus, interception or interference. > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
