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Plugin class constructor and start method [message #447426]

Wed, 05 April 2006 10:47

Guido Kuepper

Messages: 17
Registered: July 2009

Junior Member

Hi NG,

we just found a strange behaviour in one of our self developed eclipse
plugins (webstartable app, using manifest.mf):

The constructor of the class is instantiated twice, without calling
start after the second instantiation. This has the effect that the
bundle, provided by the context which is provided through the start
method, as null after completion of initialization. So we can't access
the bundle any more. Any hint what we are doing wrong?

Thanks in advance

Guido Kuepper

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Re: Plugin class constructor and start method [message #447428 is a reply to message #447426]

Wed, 05 April 2006 12:14

Stepan Rutz

Messages: 52
Registered: July 2009

Member

Hi Guido,
is the bundle a singleton ?

Eg do you have the following line in your Manifest.MF ?

Bundle-SymbolicName: org.bla.bundelname; singleton:=true

Regards,
Stepan

Guido Küpper schrieb:
> Hi NG,
>
> we just found a strange behaviour in one of our self developed eclipse
> plugins (webstartable app, using manifest.mf):
>
> The constructor of the class is instantiated twice, without calling
> start after the second instantiation. This has the effect that the
> bundle, provided by the context which is provided through the start
> method, as null after completion of initialization. So we can't access
> the bundle any more. Any hint what we are doing wrong?
>
> Thanks in advance
>
> Guido Kuepper

Report message to a moderator

Re: Plugin class constructor and start method [message #447429 is a reply to message #447426]

Wed, 05 April 2006 12:53

Stepan Rutz

Messages: 52
Registered: July 2009

Member

Another idea.

Add the followining instance initializer code into your plugin class

{
new Throwable().printStackTrace();
}

That will show you where from the instances are created.

/Stepan

Guido Küpper schrieb:
> Hi NG,
>
> we just found a strange behaviour in one of our self developed eclipse
> plugins (webstartable app, using manifest.mf):
>
> The constructor of the class is instantiated twice, without calling
> start after the second instantiation. This has the effect that the
> bundle, provided by the context which is provided through the start
> method, as null after completion of initialization. So we can't access
> the bundle any more. Any hint what we are doing wrong?
>
> Thanks in advance
>
> Guido Kuepper

Report message to a moderator

Re: Plugin class constructor and start method [message #447433 is a reply to message #447426]

Wed, 05 April 2006 14:29

Boris Bokowski

Messages: 272
Registered: July 2009

Senior Member

Another idea: is your plug-in registered for early startup? See
https://bugs.eclipse.org/bugs/show_bug.cgi?id=128178#c13

Boris

"Guido K

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Re: Plugin class constructor and start method [message #447588 is a reply to message #447433]

Tue, 11 April 2006 11:09

Guido Kuepper

Messages: 17
Registered: July 2009

Junior Member

Boris Bokowski schrieb:
> Another idea: is your plug-in registered for early startup? See
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=128178#c13
>

That's the point, thanks a lot!

Guido

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