Apache Sling NoSQL Generic Resource Provider

Generic implementation of a Sling ResourceProvider that helps writing ResourceProviders using NoSQL databases as persistence.

The generic implementation helps mapping the resource data to document-oriented key-value NoSQL databases like MongoDB or Couchbase.

Features:

• Defines a simplified “NoSqlAdapter” concept that is implemented for each NoSQL database. It boils down to simple get/put/list operations. Query support is optional.
• Complete implementation of Resource, ResourceProvider, ResourceProviderFactory and ValueMap based on the NoSqlAdapter
• “Transaction management” of Sling CRUD (commit/revert methods) is implemented
• ValueMap supports String, Integer, Long, Double, Date, Calendar and InputStream/byte[] (binary data) and arrays of them. Date/Calendar and binary data is serialized to a string before storing, so the NoSQL databases have not to support them directly.
• Sends resource notifications via OSGi EventAdmin
• Provides a “tests” JAR that can be used for integration tests with NoSQL databases to test the own adapter implementation
• Can be mounted as root provider without any JCR at all