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org.eclipse.equinox.p2.examples.rcp.prestartupdate fails with NPE [message #869727]

Fri, 04 May 2012 04:36

Jörn Guy Süß

Messages: 320
Registered: July 2009
Location: Anstead, Brisbane, Queens...

Senior Member

As the P2 eclipse wiki suggests, I have

checked out the prestart update example
into my Eclipse classic 3.7.2 and set the platform as target.
opened the product file (it has the startup settings for DS) and selected "run"

Got a Nullpointer in

at org.eclipse.equinox.p2.examples.rcp.prestartupdate.P2Util.checkForUpdates(P2Util.java:61)

Debugging shows that

```
operation.getProvisioningJob(null)
```
in line 60 yields null and causes the NPE.

status is

Status OK: org.eclipse.equinox.p2.operations code=10001 Your original request has been modified. null children=[]

Most interesting is that operation.iusToUpdate is an emtpy collection.

I have checked that the P2 repo defined in the

p2.inf

file is active. I can see it from my Eclipse's P2 client. I would expect to see it in the applications update requirements, but it does not appear.

I have no way of debugging this further, as I cannot identify how the update is carried out. Given that this is a published example of a common use case, maybe one of the developers cares to comment?

Thanks, JG

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Re: org.eclipse.equinox.p2.examples.rcp.prestartupdate fails with NPE [message #869882 is a reply to message #869727]

Fri, 04 May 2012 15:50

Gang Lao

Messages: 3
Registered: April 2012

Junior Member

In the Eclipse, you must change the Run Configuration
Run Configuration > Configuration > Software Installation > Support software installation in the launched application

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