Jump to: navigation, search

Difference between revisions of "EclipseLink/Examples/JPA/Employee"

(Try them Out)
(GIT)
Line 12: Line 12:
 
=== GIT ===
 
=== GIT ===
  
You can check the 2.1 versions of the example projects out of GIT from dev.eclipse.org:
+
You can check the latest versions of the example projects out of GIT from dev.eclipse.org:
  
* [http://dev.eclipse.org/svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/ /svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/] to get all of the examples
+
* [ssh://git.eclipse.org/gitroot/eclipselink/examples.git] to get all of the examples
 
** [http://dev.eclipse.org/svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.annotations/ /svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.annotations/] - annotations version
 
** [http://dev.eclipse.org/svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.annotations/ /svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.annotations/] - annotations version
 
** [http://dev.eclipse.org/svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.xml/ /svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.xml/] - XML version
 
** [http://dev.eclipse.org/svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.xml/ /svnroot/rt/org.eclipse.persistence/branches/2.1/trunk/examples/jpa.employee/eclipselink.example.jpa.employee.xml/] - XML version

Revision as of 08:51, 8 April 2013

EclipseLink JPA Employee Examples

This set of examples uses a common employee domain model and relational schema with various configuration approaches.

  • Annotations: JPA using standard and extended annotations
  • XML: JPA using extended eclipselink-orm.xml mapping file
  • Dynamic: Dynamic persistence (no Java classes) mapped using API and eclipselink-orm.xml

Try them Out

To try out these examples you can download from the project's GIT repository or you can download the packaged projects.

GIT

You can check the latest versions of the example projects out of GIT from dev.eclipse.org:

Download

Understanding the Examples

Employee Model

The employee model has existed in TopLink and EclipseLink since the mid 90's. The model has evolved a little over the years based on enhancements made available in the mappings.

EclipseLink Example Employee model.png

JPA 2.0 and Extended Features

When updated for EclipseLink 2.1 several JPA 2.0 features were introduced to the model and its mappings. These include:

  • PhoneNumber now mapped using derived identifiers so its primary key of EMP_ID and PTYPE are mapped with PhoneNumber.owner and PhoneNumber.type. The previous redundant mapping of PhoneNumber.id has been removed.

While the majority of the Employee examples use pure JPA mappings several extensions offered by EclipseLink are highlgted including:

  • Employee.gender mapped to the enum Gender using a converter to store a single char code in the database instead of the full enum's name or oridinal position.

Configuration Options

  • Annotations
  • ORM XML
    • EclipseLink ORM
    • JPA ORM + EclipseLink ORM