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Re: [platform-core-dev] Running Eclipse RCP Application from Java Web Start (JNLP)
|
Ok.
|
| Therefore we will use this information to discover which resources
(representing
| plugins) should be downloaded and then installed into OSGi. Of
course here you
| may need some extra information like the URL where to look for the bundles
|
Ok, if we can get the simplest noddiest hello-world Eclipse RCP app
running, then the rest will be easy.
Firstly, can we assume that startup.jar & config.ini is the minimum we
need to start with? (is it possible to lookup the config.ini from the
classpath?)
Perhaps we can work with the RCP tutorial as a starting point?
http://www-106.ibm.com/developerworks/edu/os-dw-os-rcp1-i.html
What do we need to put in the config.ini?
What do we need to do in terms of preparation of the plugins required?
-Nick
----- Original Message -----
From: Pascal Rapicault <pascal_rapicault@xxxxxxxxxx>
Date: Tue, 21 Sep 2004 08:46:23 -0400
Subject: Re: [platform-core-dev] Running Eclipse RCP Application from
Java Web Start (JNLP)
To: platform-core-dev@xxxxxxxxxxx
In our initial ideas Nick and I thought the jnlp api was providing
ways to discover resources listed in the JNLP file. However it is not
the case, and therefore here is how we see the thing now.
An RCP based application usually describes the plugins that needs to
be installed and run thanks to osgi.bundles property specified in the
config.ini (we'll consider the case of the install/update technology
later). Therefore we will use this information to discover which
resources (representing plugins) should be downloaded and then
installed into OSGi. Of course here you may need some extra
information like the URL where to look for the bundles.
PaScaL
Jeff McAffer/Ottawa/IBM@IBMCA
Sent by: platform-core-dev-admin@xxxxxxxxxxx
09/20/2004 11:27 PM
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SubjectRe: [platform-core-dev] Running Eclipse RCP Application from
Java Web Start (JNLP)
If this is similar to a previous proposal, the idea was ot just let
JNLP download everything it wants, where it wants them and then
"discover" them later. That is the trick. I mentioned somewhere else
that you can't get the info off the classpath since the classloader
doesn't tell you anything. Not sure what Nick had in mind but if you
can find the jars, you are basically done.
Eclipse is actually pretty flexible about where things can be. The
easy path is rigid in that we look for certain things in certain
places (configuration dir, plugins dir, ...) but if you are willing to
tell us where something is, we will find it there.
As for unzipping, that may be required now but going forward we expect
that many parts of Eclipse will be able to be shipped/installed and
run as JARs. That is mechanically possible now but we have not
explored it much with actual Eclipse plugins.
Jeff
Nick Minutello <nick.minutello@xxxxxxxxx>
Sent by: platform-core-dev-admin@xxxxxxxxxxx
09/20/2004 05:45 PM
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SubjectRe: [platform-core-dev] Running Eclipse RCP Application from
Java Web Start (JNLP)
Hi Pascal,
Are you essentially talking about creating the eclipse directory
hierarchy on the filesystem on startup?
|
| - because webstart put all the jars listed in the jnlp file directly
on your classpath,
| list all the plugins (plugins will be jar'ed up) you need as
resources (there is a jnlp
| tag) so they won't clutter the classpath.
|
AFAIK, in JNLP, you can define the following resources:
j2se - not interesting in this context
jar - these are downloaded and added to the classpath
nativelib - dll's or .so's inside jars
extension - reference to other jnlp files
property - -Dproperty=value on the command line
package - not sure what this is for - I have never used it.
In the case of jars, I am not sure how you access a given one to
unpack it (ie treat it essentially as a zip file...) - I am not sure
how you would get a handle to it...
|
| - write a bundle that will be responsible to find all the plugins
| (the one we tagged as resources), download them, then install them into the
| framework.
|
As above, not sure how we access what jars we downloaded...
However, its possible to download some other jar(s) (not specified in
the jnlp) and unpack it/them.
Ultimately then all we need is to jnlp deploy startup.jar...
Do I take it then that its not possible to run eclipse without the
plugins/XXXXX directories?
The one thing I did find as I started looking into this was that
org.eclipse.core.launcher.Main looks for a "plugins" directory and a
"configuration" directory...etc so I guess the directorie structure is
still required - and moreover we need to have these in place before
the app starts....
-Nick
(btw, is there an IRC channel for eclipse? Do you want to spend a
quick 5mins on irc so we can get to the bottom of this - then I can
post the chat here...)
----- Original Message -----
From: Pascal Rapicault <pascal_rapicault@xxxxxxxxxx>
Date: Mon, 20 Sep 2004 10:50:21 -0400
Subject: Re: [platform-core-dev] Running Eclipse RCP Application from
Java Web Start (JNLP)
To: platform-core-dev@xxxxxxxxxxx
Nick,
There is no "out of the box" way to start eclipse with Webstart.
After putting some more thoughts on that (talking with Nick Edgar), it
seems that there is a way to do it, but it requires a little bit of
work (not much either).
Note that this is a one time cost only, since everyone will be able to
reuse the same thing.
Basically here is the idea:
- because webstart put all the jars listed in the jnlp file directly
on your classpath, list all the plugins (plugins will be jar'ed up)
you need as resources (there is a jnlp tag) so they won't clutter the
classpath.
- write a bundle that will be responsible to find all the plugins (the
one we tagged as resources), download them, then install them into the
framework.
HTH,
PaScaL
Nick Minutello <nick.minutello@xxxxxxxxx>
Sent by: platform-core-dev-admin@xxxxxxxxxxx
09/15/2004 05:21 PM
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Subject[platform-core-dev] Running Eclipse RCP Application from Java
Web Start (JNLP)
Hi,
I am looking for information / help on getting an Eclipse RCP app
(http://timtam.codehaus.org/) to run (ultimately) from Java Web Start.
I have made a few tentative (but unsuccessful) attempts so far but
have been unsuccessful.
Any help (Pascal?) & pointers to information would be greatly appreciated...
Cheers,
-Nick
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