Eclipse Community Forums: Plugin Development Environment (PDE)

Help

Home

Home » Eclipse Projects » Plugin Development Environment (PDE) » Install Bundles

Show: Today's Messages :: Show Polls :: Message Navigator

Install Bundles [message #24396]

Fri, 26 September 2008 10:05

Michael Heiss

Messages: 25
Registered: July 2009

Junior Member

Hi,

I am trying to install a plugin programmatically using the following code:

BundleContext context =
ResourcesPlugin.getPlugin().getBundle().getBundleContext();
String path = "reference:file:///"+workspace.getLocation()+"/"+name+"/";
Bundle bundle = context.installBundle(path);

Where name is the name of the plugin in my workspace.

This works fine, the plugin is beeing installed and i see it in the
Plugin-Registry. When i try to call bundle.start() then a ClassNotFound
exception is thrown. The classloader cannot find the activator class of
the new installed bundle.

How can i solve this?

BestRegards
Michael

Report message to a moderator

Re: Install Bundles [message #24439 is a reply to message #24396]

Fri, 26 September 2008 11:07

Danail Nachev

Messages: 110
Registered: July 2009

Senior Member

The problem is that bundles in the workspace has slightly different
structure when they are deployed. The bundle classes are located at the
root of the bundle, while they are in bin/ subfolder when the bundle is
being developed.

I'm not sure what you are trying to accomplish, but I think you should
pack your bundles before installing via installBundle() method. This is
done via Export -> Plug-in Development -> Deployable plug-ins and
fragments wizard. Perhaps, it is better to describe your goal and I'll
try to suggest how to do it properly?

Also, don't use any bundle context you can reach, it is not polite:) You
should have your own activator and use the BundleContext object passed
to it.

BR,
Danail

Michael Heiß wrote:
> Hi,
>
> I am trying to install a plugin programmatically using the following code:
>
> BundleContext context =
> ResourcesPlugin.getPlugin().getBundle().getBundleContext();
> String path = "reference:file:///"+workspace.getLocation()+"/"+name+"/";
> Bundle bundle = context.installBundle(path);
>
> Where name is the name of the plugin in my workspace.
>
> This works fine, the plugin is beeing installed and i see it in the
> Plugin-Registry. When i try to call bundle.start() then a ClassNotFound
> exception is thrown. The classloader cannot find the activator class of
> the new installed bundle.
>
> How can i solve this?
>
> BestRegards
> Michael
>

Report message to a moderator

Re: Install Bundles [message #24480 is a reply to message #24439]

Fri, 26 September 2008 11:29

Michael Heiss

Messages: 25
Registered: July 2009

Junior Member

Hi,

I have written a plugin that shows some data that is contributed with
extension points. Now i have the requirements that i have to add new
plugins (that use this extension point) during the application is running.

The plugins are stored in the workspace (and are modified during the
application is running) and now i try to load the plugins dynamically so
that they contribute the extensions and i can show the new data.
I hope it is clear what i try to do :)

Michael

Report message to a moderator

Re: Install Bundles [message #24562 is a reply to message #24480]

Mon, 29 September 2008 07:58

Danail Nachev

Messages: 110
Registered: July 2009

Senior Member

Perhaps you should use org.eclipse.pde.internal.ui.build.PluginExportJob
class to package the plugins before installing them. This will guarantee
you that the classes are available. Note that the class is in internal
package.

Michael Heiß wrote:
> Hi,
>
> I have written a plugin that shows some data that is contributed with
> extension points. Now i have the requirements that i have to add new
> plugins (that use this extension point) during the application is running.
>
> The plugins are stored in the workspace (and are modified during the
> application is running) and now i try to load the plugins dynamically so
> that they contribute the extensions and i can show the new data.
> I hope it is clear what i try to do :)
>
> Michael
>

Report message to a moderator

Re: Install Bundles [message #24602 is a reply to message #24562]

Mon, 29 September 2008 08:59

Michael Heiss

Messages: 25
Registered: July 2009

Junior Member

Danail Nachev wrote:
> The problem is that bundles in the workspace has slightly different
> structure when they are deployed. The bundle classes are located at the
> root of the bundle, while they are in bin/ subfolder when the bundle is
> being developed.

Thanks for that hint :)
Now i dynamically create a jar file and then install this jar file, that
works perfect.

Just for the case somebody else wants to do the same:
I found that help topic to create a jar file:
http://help.eclipse.org/ganymede/index.jsp?topic=/org.eclips e.jdt.doc.isv/guide/jdt_api_write_jar_file.htm
And i write the jar file using JarWriter3.

After the jar file is created i install i using:
String projectJarFile = workspace.getLocation() +"/myjar.jar";
BundleContext context =
Activator.getDefault().getBundle().getBundleContext();
Bundle bundle = context.installBundle(reference:file:///"+projectJarFile);
bundle.start();

Report message to a moderator