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EclipseLink/Examples/DBWS/AdvancedOSGi
DBWS in an OSGi Environment
An Eclipselink DBWS service can be run in an OSGi environment using Javase 6's 'containerless' javax.xml.ws.Endpoint API.
Environment Setup
Download a version of the Eclipse IDE that includes the Plug-in Development Environment (PDE) (Eclipse IDE for Java EE Developers, Eclipse Classic 3.6.0 or
Eclipse for RCP and RAP Developers).
Install an OSGi-friendly JDBC driver - use Derby bundle:
- Download Apache Derby (org.apache.derby) bundle from Orbit.
- Place the org.apache.derby bundle into your $ECLIPSE_HOME/dropins folder.
- Install the EclipseLink and Jetty target Components:
Accept the license and proceed through the prompts for re-starting Eclipse ...
{NB - later, a set of updated EclipseLink bundles will be required}
Under 'Preferences' -> 'Plug-in Development' -> 'Target Platform', reload the Running Platform (Active)
Create a new Plug-in project
From the 'Plug-in Development' Perspective, create a new Plug-in project SimpleTable:
{Note the choice of 'standard' for OSGi framework}
Proceed to the next panel of the wizard where the (OSGi bundle) Activator for SimpleTable is defined:
Click 'Finish' and open the generated Activator:
package simpletable; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; public class Activator implements BundleActivator { private static BundleContext context; static BundleContext getContext() { return context; } /* * (non-Javadoc) * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext) */ public void start(BundleContext bundleContext) throws Exception { Activator.context = bundleContext; } /* * (non-Javadoc) * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext) */ public void stop(BundleContext bundleContext) throws Exception { Activator.context = null; } }
Modifying Activator to implement javax.xml.ws.Provider
In order for our Activator to 'provide' Web service, we need to update the EclipseLink bundles. Builds after
2.1.1.v20100805-r7986 have EclipseLink DBWS packages as a 'fragment' bundle that extends the core
org.eclipse.persistence
bundle. Download the updates bundles and extract the following 8 bundles:
directory:
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