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How to add a class to the classpath

Posted on 2004-08-16
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Last Modified: 2010-03-31
I have a webapplication that uses jasper repots to generate a report.  The i have my report is as follows:  There is a report file called address.jasper with a scriplet( which is just a java file) called adressscriplet.class

I dont want to add the addressscriplet.class to the WEB-INF/classes directory b/c  i may modify the report and the scriplet and dont want to stop the webapp.  I want to take my new report modifications along with the scriplet and put it in a directory called reports and update it at anytime with out having to stop the application.  
I have tried putting the path in the classpath: ex. CLASSPATH=%CLASSPATH%;c:/reports
with no luck.

Is there a way to do it?

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Question by:netizen1
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13 Comments
 
LVL 92

Expert Comment

by:objects
ID: 11816558
> I dont want to add the addressscriplet.class to the WEB-INF/classes directory b/c  i may modify the report and the scriplet and dont want to stop the webapp.

where your class is doesn't really make any difference
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LVL 92

Expert Comment

by:objects
ID: 11816560
is your webapp configured to do dynamic class reloading?
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Author Comment

by:netizen1
ID: 11817384
That is what i was looking at which was dynamic class reloading.  But I dont think it can be used for what i need it to do.  The thing is i dont use the class directly.  The report address.jasper uses the class but i dont want it tied to the WEB-INF/classes.  Here is what i would like to do:

I created a directory called:
c:\reports
And then i put the address.jasper and the class that the reports use.

I then run the application and it runs fine.  But days later the report needs to be changed so i modify the address.jasper file and adressscriplet.class so i then need to update the files in c:\reports.  But i would like to do it without stopping and re-starting the application.  

I have tried adding c:\reports to the classpath  on startup but it doesnt seem to work.  But again if i put the class in WEB-INF/classes it finds it fine.  But i dont want it there.

Hope this clear it up.
If dynamic loading would work how would you do it.

Thanks
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LVL 92

Expert Comment

by:objects
ID: 11817405
> but i dont want it tied to the WEB-INF/classes

why not?
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Author Comment

by:netizen1
ID: 11817413
b/c this is a war file and i dont want to create a new build everytime.  I'm trying to do this withoug stopping the application.
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LVL 92

Expert Comment

by:objects
ID: 11817428
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Author Comment

by:netizen1
ID: 11817445
But that isnt what i'm looking for.  I dont want to deploy a new war file just the report and its scriplet file.
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LVL 92

Expert Comment

by:objects
ID: 11817459
that link doesn't even mention a war does it?
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Author Comment

by:netizen1
ID: 11817471
But  i'm not using tomcat.  I'm using weblogic that is why i'm looking for the this particular solution.  I guess the question then is can this  be done?
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Accepted Solution

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objects earned 280 total points
ID: 11817497
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