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[How to] prepare a plugin to be patched? [message #448555]

Wed, 26 April 2006 05:57

Eclipse User

Hi,

I'm looking for an idea to prepare my plug-ins to be patched (by me).

The scenario: A very big plug-in containing several hundred classes. I
want to *replace* the faulty class by a new class by a patch. I cannot
replace the whole plug-in due to whatever reason...

Any idea how to do that?

I tried without success:

* a fragment, but that can only add not replace classes
* introduce a "patch.jar" in the plug-in and
provide it (later) by a fragment

What is the proposed way do solve this problem?

Many thanks

Günther

Re: [How to] prepare a plugin to be patched? [message #448590 is a reply to message #448555]

Thu, 27 April 2006 08:39

Eclipse User

Guenther Koegel wrote:
> Hi,
>
> I'm looking for an idea to prepare my plug-ins to be patched (by me).
>
> The scenario: A very big plug-in containing several hundred classes. I
> want to *replace* the faulty class by a new class by a patch. I cannot
> replace the whole plug-in due to whatever reason...
>
> Any idea how to do that?
>
> I tried without success:
>
> * a fragment, but that can only add not replace classes
> * introduce a "patch.jar" in the plug-in and
> provide it (later) by a fragment

Actually, the second scenario is the one that's supposed to work.

ex: main plugin has a classpath like:
Bundle-ClassPath: patch.jar, .
and doesn't provide patch.jar

Then the fragment provides patch.jar.

Are you saying that it doesn't work?

Later,
PW

Re: [How to] prepare a plugin to be patched? [message #448801 is a reply to message #448590]

Wed, 03 May 2006 04:40

Eclipse User

Paul Webster schrieb:
> Guenther Koegel wrote:
.... [snip] ...
>> * introduce a "patch.jar" in the plug-in and
>> provide it (later) by a fragment
>
>
> Actually, the second scenario is the one that's supposed to work.
>
> ex: main plugin has a classpath like:
> Bundle-ClassPath: patch.jar, .
> and doesn't provide patch.jar
>
> Then the fragment provides patch.jar.
>
> Are you saying that it doesn't work?
>
> Later,
> PW

Thank you Paul for reminding me that I'm doing something wrong! My error
was to place the "patch.jar" on the runtime classpath *AND* in the build
configuration on the "Runtime Information". Therefore my "patch.jar" was
created and contained some classes. And now the steps to do it right:

Summary for the plug-in:
1) On the Runtime tab add a "New" library to the classpath
2) Move it "Up" until the library is on the top of the list

Summary for the fragment:
3) Export the patched packages
4) Put the library "patch.jar" missing in the plugin.xml in the
tab "Runtime Information"
5) Export your fragment and deploy!

That's all and it works now...

Bye

Günther

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