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Same Plugin with multiple versions [message #507918]

Fri, 15 January 2010 03:15

Eclipse User

I am using eclipse 3.4
Is it possible to have same plugin with multiple versions? If so which version would be loaded ?

I have plugins with multiple versions, and it seems to be loading the older versions. Is there any way to force it to use the latest version of a plugin?

Would the behavior change if a plugin contributes an extension or defines a extension point.

thanks
- Ani

Re: Same Plugin with multiple versions [message #508012 is a reply to message #507918]

Fri, 15 January 2010 04:58

Eclipse User

Originally posted by: richkulp.us.NO_SPAM.ibm.com

Hi,

Whether there can be more than one version of a plugin active at a time
depends on the MANIFEST.MF entry

Bundle-SymbolicName: yada;singleton:=true

If it sees the singleton=true then only the latest version will be active.

If this is not set, then it depends on the plugin.xml. If a plugin.xml
contributes no extensions then there can be multiple copies active.
Which one chosen depends on the criteria of the plugin that depends on
it. If the dependent plugin says it requires the older one then it will
use the older one.

If the plugin.xml has extensions or extension points defined then it
must be a singleton.

Aniruddha Shevade wrote:
> I am using eclipse 3.4
> Is it possible to have same plugin with multiple versions? If so which
> version would be loaded ?
> I have plugins with multiple versions, and it seems to be loading the
> older versions. Is there any way to force it to use the latest version
> of a plugin?
>
> Would the behavior change if a plugin contributes an extension or
> defines a extension point.
>
> thanks
> - Ani
>

--
Thanks,
Rich Kulp

Re: Same Plugin with multiple versions [message #508078 is a reply to message #508012]

Fri, 15 January 2010 13:58

Eclipse User

HI Rich
Thanks for your reply
In my case I have the singleton=true; but still I do not see the latest plugin getting loaded. It always loads the old plugin.
Is there any way I can debug why this is happening? Any help is appreciated.

Would this have anything to do with the feature.xml, which specifies a particular version number for a plugin?

thanks
- Ani

Re: Same Plugin with multiple versions [message #508341 is a reply to message #508078]

Mon, 18 January 2010 08:43

Eclipse User

How did the higher version plugin get in your install? In 3.4 you can
no longer just drop a plugin in the eclipse/plugins folder, that doesn't
work any more. There is the dropins[1] folder, but that might not work
for a plugin that's actually part of one of your features.

http://wiki.eclipse.org/Equinox_p2_Getting_Started#Dropins

PW

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

Re: Same Plugin with multiple versions [message #508416 is a reply to message #508341]

Mon, 18 January 2010 12:10

Eclipse User

HI
I did put the plugins in the Dropins folder , but it is not getting picked up. Do I need to also need to update the feature.xml with the new plugin version number, and add it to the dropins folder?

thanks

Re: Same Plugin with multiple versions [message #508429 is a reply to message #508416]

Mon, 18 January 2010 13:10

Eclipse User

Aniruddha Shevade wrote:
> HI
> I did put the plugins in the Dropins folder , but it is not getting
> picked up. Do I need to also need to update the feature.xml with the new
> plugin version number, and add it to the dropins folder?

That's where I'm less sure. For a while, a plugin in the dropins folder
could not override a fundamental part of the product (and if your
original is included in a feature, that's part of its baseline).

A possibility is to provide a feature patch on your feature, that points
to the higher version of the plugin ... that might even install through
dropins.

--
Paul Webster
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Menu_Contributions
http://wiki.eclipse.org/Menus_Extension_Mapping
http://help.eclipse.org/galileo/index.jsp?topic=/org.eclipse .platform.doc.isv/guide/workbench.htm

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