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Version number in .eclipseextension file [message #287144]

Fri, 24 June 2005 17:12

Eclipse User

Messages: 25
Registered: July 2009

Junior Member

Hi,

I have a question about the version number in ".eclipseextension" file in
the Extension Location: what is this version number used for? I tried to
create an extension location for Eclipse3.1 RC2, so the version number
inside of ".eclipseextension" is '3.1.0'. But I can add this extension
location to Eclipse 3.0. If I change this version number to '2.1.0', I can
add this extension location to Eclipse 3.1 RC2. Is this version number
used to do something?

Thanks,

J.

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Re: Version number in .eclipseextension file [message #287163 is a reply to message #287144]

Fri, 24 June 2005 22:44

Philippe Ombredanne

Messages: 386
Registered: July 2009

Senior Member

"J.Li" <jli1@us.ibm.com> wrote in message
news:32247107057e4fd5402b30df6d4b1299$1@www.eclipse.org...
> Hi,
>
> I have a question about the version number in ".eclipseextension" file in
> the Extension Location: what is this version number used for? I tried to
> create an extension location for Eclipse3.1 RC2, so the version number
> inside of ".eclipseextension" is '3.1.0'. But I can add this extension
> location to Eclipse 3.0. If I change this version number to '2.1.0', I can
> add this extension location to Eclipse 3.1 RC2. Is this version number
> used to do something?

In fact, AFAIK, nothing of this file content is used at all.
You can leave the file empty entirely, unless someone tells the contrary
The code that checks for that file does that:
// check the marker
File marker = new File(eclipse, ".eclipseextension"); //$NON-NLS-1$
if (!marker.exists() || marker.isDirectory())
return null;
return eclipse;

Never reads it.

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Re: Version number in .eclipseextension file [message #287167 is a reply to message #287144]

Fri, 24 June 2005 23:39

Philippe Ombredanne

Messages: 386
Registered: July 2009

Senior Member

"J.Li" <jli1@us.ibm.com> wrote in message
news:32247107057e4fd5402b30df6d4b1299$1@www.eclipse.org...
> Hi,
>
> I have a question about the version number in ".eclipseextension" file in
> the Extension Location: what is this version number used for? I tried to
> create an extension location for Eclipse3.1 RC2, so the version number
> inside of ".eclipseextension" is '3.1.0'. But I can add this extension
> location to Eclipse 3.0. If I change this version number to '2.1.0', I can
> add this extension location to Eclipse 3.1 RC2. Is this version number
> used to do something?
Just to add something: if you use the update manager and ask for a feature
to be installed in some other location, the update manager will religiously
create an eclispeextension file with all the fields matching those of the
installed product.
id=org.eclipse.platform
name=Eclipse Platform
version=3.1.0

But it is ignored AFAIK.

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