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Question about setting project bootpath [message #329847]

Tue, 08 July 2008 10:48

Eclipse User

We would like to configure the bootpath for a project in Eclipse. If
you change the Java build path in the project properties, it will affect
the ordering of classpathentry elements in the .classpath file.
However, I can't see any mechanism to specify that a library should be
part of the runtime bootpath for that project or plugin.

The specific example in our case is that we want the org.apache.xerces
2.9 jar from Eclipse to always be in the boot path ahead of the JRE,
because some JREs include an older implementation of Xerces that will
not work for us. Can the boot path for a project be configured in the
project metadata?

Thanks,
David

Re: Question about setting project bootpath [message #329861 is a reply to message #329847]

Tue, 08 July 2008 13:10

Eclipse User

Originally posted by: eclipse-news.rizzoweb.com

David Whiteman wrote:
> We would like to configure the bootpath for a project in Eclipse. If
> you change the Java build path in the project properties, it will affect
> the ordering of classpathentry elements in the .classpath file. However,
> I can't see any mechanism to specify that a library should be part of
> the runtime bootpath for that project or plugin.
>
> The specific example in our case is that we want the org.apache.xerces
> 2.9 jar from Eclipse to always be in the boot path ahead of the JRE,
> because some JREs include an older implementation of Xerces that will
> not work for us. Can the boot path for a project be configured in the
> project metadata?

It sounds like you're mixing up the build-time and runtime classpaths. A
project controls its build-time classpath (its Build Path in
properties), but the runtime classpath is controlled by a launch
configuration.

I don't think a project could dictate such things about runtime, since
it can't know if other projects are involved in the launch(es) it
participates in.

Eric

Re: Question about setting project bootpath [message #329864 is a reply to message #329861]

Tue, 08 July 2008 14:02

Eclipse User

Eric Rizzo wrote:
> It sounds like you're mixing up the build-time and runtime classpaths. A
> project controls its build-time classpath (its Build Path in
> properties), but the runtime classpath is controlled by a launch
> configuration.
>
> I don't think a project could dictate such things about runtime, since
> it can't know if other projects are involved in the launch(es) it
> participates in.
>
> Eric

Thanks for your reply Eric. So what do you do if your plugin requires a
library that is at a later revision than one in the JRE? We just want
to make sure the Xerces we are bundling is invoked before the backlevel
Xerces libraries in the JRE. Is that not possible? When a user
installs our plugin into Eclipse, they aren't running a launch
configuration.

David

Re: Question about setting project bootpath [message #329967 is a reply to message #329864]

Fri, 11 July 2008 10:02

Eclipse User

David Whiteman wrote:
> Eric Rizzo wrote:
>> It sounds like you're mixing up the build-time and runtime classpaths.
>> A project controls its build-time classpath (its Build Path in
>> properties), but the runtime classpath is controlled by a launch
>> configuration.
>>
>> I don't think a project could dictate such things about runtime, since
>> it can't know if other projects are involved in the launch(es) it
>> participates in.
>>
>> Eric
>
> Thanks for your reply Eric. So what do you do if your plugin requires a
> library that is at a later revision than one in the JRE? We just want
> to make sure the Xerces we are bundling is invoked before the backlevel
> Xerces libraries in the JRE. Is that not possible? When a user
> installs our plugin into Eclipse, they aren't running a launch
> configuration.
>
> David

Is this the correct newsgroup for questions about classpath, etc.?

David

Re: Question about setting project bootpath [message #329999 is a reply to message #329967]

Fri, 11 July 2008 15:27

Eclipse User

Originally posted by: eclipse-news.rizzoweb.com

David Whiteman wrote:
> David Whiteman wrote:
>> Eric Rizzo wrote:
>>> It sounds like you're mixing up the build-time and runtime
>>> classpaths. A project controls its build-time classpath (its Build
>>> Path in properties), but the runtime classpath is controlled by a
>>> launch configuration.
>>>
>>> I don't think a project could dictate such things about runtime,
>>> since it can't know if other projects are involved in the launch(es)
>>> it participates in.
>>>
>>> Eric
>>
>> Thanks for your reply Eric. So what do you do if your plugin requires
>> a library that is at a later revision than one in the JRE? We just
>> want to make sure the Xerces we are bundling is invoked before the
>> backlevel Xerces libraries in the JRE. Is that not possible? When a
>> user installs our plugin into Eclipse, they aren't running a launch
>> configuration.
>>
>> David
>
> Is this the correct newsgroup for questions about classpath, etc.?

If you don't get response, try eclipse.platform.pde or maybe even
eclipse.platform.rcp
I don't know the answer myself, but would like to know. If you decide to
cross-post, please do it as a follow-up to this thread so we all see the
responses.

Eric

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