Home » Archived » Java WorkFlow Tooling (JWT) » how can I handle project jars, that get loaded by my app dynamically
| how can I handle project jars, that get loaded by my app dynamically [message #544531] |
Sat, 03 July 2010 08:14  |
Eclipse User |
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Hello,
I'm using eclipse quite a while, but I did not found out (yet), how I can create a workflow for an eclipse project, that is a java library used by another eclipse project (the app).
No problem at all, if the app gets bound against that library.
But the app does not know nothing about that library but starts to load it at runtime from a defined directory.
How can I build an eclipse-project, that automatically updates a jarfile, so that runtime-loading will lead to the same result than sharing a project?
Lately I read about project facelets - would that be a way to go ahead?
Any hint is appreciated.
kind regards
Geronimo
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| Re: how can I handle project jars, that get loaded by my app dynamically [message #544773 is a reply to message #544531] |
Mon, 05 July 2010 09:34  |
| Eclipse User |
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Hi Geronimo
It seems to be a devtime/runtime classpath problem and not to have much
to do with JWT.
In your place, I'd use a build & packaging tool such as ant or maven to
assemble and produce my application runtime.
There are a lot of other solutions : e.g. if your runtime application is
a web application (.war) to be run in tomcat, you can use an Eclipse Web
Project. If it is an OSGi application, you've got specific build tools
as well.
Please look up further information in those places, ex. google up
"eclipse ant build".
Regards,
Marc
geronimo013@gmx.de a écrit :
> Hello,
>
> I'm using eclipse quite a while, but I did not found out (yet), how I
> can create a workflow for an eclipse project, that is a java library
> used by another eclipse project (the app).
>
> No problem at all, if the app gets bound against that library.
>
> But the app does not know nothing about that library but starts to load
> it at runtime from a defined directory.
>
> How can I build an eclipse-project, that automatically updates a
> jarfile, so that runtime-loading will lead to the same result than
> sharing a project?
> Lately I read about project facelets - would that be a way to go ahead?
>
> Any hint is appreciated.
>
> kind regards
>
> Geronimo
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| Re: how can I handle project jars, that get loaded by my app dynamically [message #544789 is a reply to message #544773] |
Mon, 05 July 2010 10:15 |
| Eclipse User |
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Hi Marc,
thank you for your attention!
| Quote: | It seems to be a devtime/runtime classpath problem and not to have much
to do with JWT.
In your place, I'd use a build & packaging tool such as ant ...
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Looks like I was not able to express what I mean 
I already use a multi-project-build with ant, which works fine - same does my app.
I just wanted to know, whether there's a way to extend the incremental build capabilities of eclipse to handle a target jarfile too.
I know, that a jarfile can be exported from eclipse, but that's not an acceptable choice instead of a projects target.
I've no idea about what would be possible by extending eclipse - as til now I used eclipse just as an editor 
When I discovered project facelets, I thought: hey, may be some other guy had the same thoughts like me and he build an addon, so the projects target could be user defineable now ... 
kind regards
Geronimo
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| Re: how can I handle project jars, that get loaded by my app dynamically [message #544810 is a reply to message #544789] |
Mon, 05 July 2010 10:54 |
| Eclipse User |
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Hi Geronimo
geronimo013@gmx.de a écrit :
> Hi Marc,
>
> thank you for your attention!
>
> Quote:
>> It seems to be a devtime/runtime classpath problem and not to have much
>> to do with JWT.
>> In your place, I'd use a build & packaging tool such as ant ...
>
> Looks like I was not able to express what I mean :(
Looks like I'm not the right person and this is not the right place ;)
>
> I already use a multi-project-build with ant, which works fine - same
> does my app.
>
> I just wanted to know, whether there's a way to extend the incremental
> build capabilities of eclipse to handle a target jarfile too.
> I know, that a jarfile can be exported from eclipse, but that's not an
> acceptable choice instead of a projects target.
> I've no idea about what would be possible by extending eclipse - as til
> now I used eclipse just as an editor ;)
>
> When I discovered project facelets, I thought: hey, may be some other
> guy had the same thoughts like me and he build an addon, so the projects
> target could be user defineable now ... :)
Eclipse's incremental build capabilities are only there to serve its own
"build while coding" features. They've been extended ex. by maven
integration projects, but at some point that means that when you save
your java file it starts an mvn command, which is certainly not as light
as the default behaviour. That's all about compromise : either you want
something quick enough not to disturb you while you code, or powerful
enough to build any kind of runtime application.
>
> kind regards
>
> Geronimo
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| Re: how can I handle project jars, that get loaded by my app dynamically [message #544817 is a reply to message #544810] |
Mon, 05 July 2010 11:23 |
| Eclipse User |
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Hi Marc,
| Quote: | and this is not the right place
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any hint about a propper place?
| Quote: | Eclipse's incremental build capabilities are only there to serve its own
"build while coding" features. They've been extended ex. by maven
integration projects,...
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so the first sounds reasonable, but maven ... ? - not at all!
I never wonna get in touch with that stuff ...
| Quote: | That's all about compromise : either you want
something quick enough not to disturb you while you code ...
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Quite sure and for 99% of the projects I was envolved that decision was right.
Just wondered whether I would be possible to trigger the jar-export automatically for certain project(s). I don't want to enable the jar-creation for any project!
kind regards
Geronimo
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