We are happy to announce release of Kundera 2.0.1 Kundera 2.0.1 is a JPA compliant, Object-Datastore Mapping Library for NoSQL Datastores. The idea behind Kundera is to make working with NoSQL Databases drop-dead simple and fun. Some salient features of Kundera are:
1. Fully JPA 1.0 compliant. You can create your entity classes annotated with JPA 1.0 annotations and perform CRUD operations using JPA provided interfaces. Support for JPA 2.0 is in the offing. 2. Currently Kundera supports Cassandra 0.7.6, Hbase and MongoDB. In(very near) future support for Cassandra 0.8 is planned. 3. Relationships (@OnToOne, @OneToMany, @ManyToOne, @ManyToMany) are persisted separately as another column family/ document. 4. POJOs annotated with @Embedded are persisted co located with parent entity ( e.g. super column for Cassandra and embedded document for MongoDB). Java collection of POJOs annotated with @Embedded are persisted as variable number of super columns for cassandra and list of documents for MongoDB. 5. Control over selective index(eable) columns in the entity. 6. Switching to other Datastores is as simple as changing persistence unit name in the code. No further code change required. 7. Secondary Index support over SuperColumn which enables querying based on SuperColumns. To download and use Kundera, visit: http://github.com/impetus-opensource/Kundera An example twitter like application built using Kundera can be found at: http://github.com/impetus-opensource/Kundera-Examples NOSQL is as easy as SQL, if done through Kundera ! Happy working with NoSQL!!
