OpenBooks is a sample (and perhaps, simple) application featuring some of
the new features in JPA 2.0.
This demonstration features usage of new JPA 2.0 features such as
- Criteria Query
- Compound, Derived identity
- Orphan Delete
- Persistent Domain Model API
The sample application shows essential build and packaging steps for both
as
- a Swing-based JSE application and
- a typical Web Application Archive (*.war) ready to be deployed in a
Java Enterprise container.
OpenBooks demonstrates few useful practices in domain modeling such as
composite persistent relations,
isolating immutable state for better cache utilization, immutable
relationship etc. Architecturally,
OpenBooks uses a design pattern to enable the same persistence service be
used inside and outside
a managed environment. Such patterns vastly speeds up develop-test-debug
cycle for persistence and
object-relation mapping functionality outside a container.
Availability
The source code and build script for OpenBooks is available in OpenJPA
SubVersion repository under openjpa-examples/openbooks
To access the source code
$ svn co https://svn.apache.org/repos/asf/openjpa/trunk/openjpa-examples/openbooks
Building
- Follow the instruction
to build and run OpenBooks.
These instructions can also be found also in
index.html at the OpenBooks root directory.
Here are few screen shots of OpenBooks running as a Swing Application.
Selecting and Purchasing Books
Persistent Domain Model (as a Powerpoint Slide)
Browsing the same domain model via Metamodel API
