JEST

JEST is a REST style access to any OpenJPA runtime.
REST (Representational State Transfer) is a foundational concept in the architecture for World Wide Web. JEST promotes REST style interaction between a client and an application based on OpenJPA. JEST can be deployed in as a servlet for a web application using OpenJPA as a persistence provider. A client (neither necessarily in Java nor having any definition of the persistent server objects) can send HTTP requests and receive persistent data as response in JSON, XML or other string based format.

JEST is described under the following sections

• Using JEST
• URI Syntax of client-server communication
• Representation of persistent state
• Transaction semantics