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| [[RAP|RAP wiki home]] | [http://eclipse.org/rap RAP project home] |

==RAP running on OSGi==
The example shows RAP running on OSGi. It consists of a 
RAP fontend and an RCP client, both sharing the same 
core plugin.

You can download the set of projects that form the example  [http://download.innoopract.com/rap/rapsample.zip here] (2.9 MB). 

'''A brief overview of the content'''

''Note that project names are without the leading org.eclipse.''
* '''rap.example.core''' provides the data model of the example. It is shared by the RCP client and the RAP frontend.

* '''rap.example.rcp''' contains the RCP client (includes a launch configuration)

* The RAP frontend is provided by '''rap.example.ui'''. You can launch it with the OGGi Equinox launcher, a launch configuration is stored in plugin project. You can access the demo with http://localhost/W4TDelegate. Make sure that '''no other service is using port 80'''.

* The '''example.data''' project stores the data that both projects use. Note that a new session is needed (RCP == new launch / RAP == new browser session) to access data that has been changed by the other application.

* The '''rap.ui.workbench''' plugin contains the RAP specific extenstion point (startup form) and a wrapper servlet.

* '''rap.viewer''' contains our JFace like API (has been contributed to eclipse.org)

* '''rap.w4t''' is the widget toolkit - we had to make some tweaks to make it run with OSGi, as we do not have the standard webapp environment that we rely on. Those tweaks are not final, we will work that into the CVS with some improvements.

The remaining projects deal with the servlet environment and hosting it in the OSGi framework.

* The '''org.eclipse.equinox.http.registry''' provides the servlet extension point for '''rap.ui.workbench''' to register at.

* '''org.apache.commons.logging''' exports the packages from the commons-logging JAR that are required by '''equinox.jetty'''

* '''equinox.servlet.api''' contains the javax servlet related APIs.

* The '''equinox.servlet.bridge.http''' proxies through the servlet container to provide an OSGi HttpService. It is used by the '''jetty.http''' bundle.

* The '''equinox.jetty''' and '''equinox.jetty.http''' provide the HTTP service. We tweaked the '''equinox.jetty''' manifest, as it required servlet version 2.4. Moving to this servlet version would have required additional work which we wanted to avoid for now.
 

RAP relies on servlet version 2.3 which is not currently supported by the Equinox implementation of the OSGi HttpService (see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=132555 bug #132555] and [https://bugs.eclipse.org/bugs/show_bug.cgi?id=138390 #138390]). This is why we chose equinox.jetty.

We are experimenting with a Tomcat based HTTP service, as Tomcat is already packaged with Eclipse and will contibute our work back to the incubator.

The screenshots below show the example in action

[[Image:Rap.example.user-admin.rap-ui.jpg]] The example RAP client

[[Image:Rap.example.user-admin.rcp-ui.jpg]] The example RCP client

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