RE: Loading Classes from Tables

i think mine would be a bit to specific to my project but there are many 
tutorials and examples of custom classloaders. most of the time one can stick 
with the FileClassLoader and URLClassLoader.

in the example here is a JarClassLoader which is also fine.
http://www.javaworld.com/javaworld/javatips/jw-javatip70.html 



> -----Original Message-----
> From: java400-l-bounces@xxxxxxxxxxxx 
> [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Anand, Rajesh
> Sent: Monday, January 09, 2006 10:29 AM
> To: Java Programming on and around the iSeries / AS400
> Subject: RE: Loading Classes from Tables
> 
> Mihael,
> 
>       Do you mind sending us folks, not familiar with custom class
> loading, a copy of your sample code??
> 
>       Many Thanks, 
> 
> Rajesh Anand
> Email:Rajesh_anand@xxxxxx
> 
> 
> -----Original Message-----
> From: java400-l-bounces@xxxxxxxxxxxx
> [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Knezevic, Mihael
> Sent: 09 January 2006 06:53
> To: Java Programming on and around the iSeries / AS400
> Subject: RE: Loading Classes from Tables
> 
> 
> is the problem the storing or the loading of classes in/from the
> database?
> 
> for the loading you would have to write your own classloader.
> class loading is rather simple to implement. 
> just done that (though not from a db but that shouldn't be 
> the problem).
> 
> 
> one thing to keep in mind is that the bootstrap classloader 
> doesn't know
> anything about the classes you load with your custom classloader. so
> with if you try to use the Class.forName() method you should also pass
> the custom classloader.
> 
> storing the class file in a blob column shouldn't either be a problem.
> 
> 
> 
> > -----Original Message-----
> > From: java400-l-bounces@xxxxxxxxxxxx 
> > [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Walden 
> > H. Leverich
> > Sent: Friday, January 06, 2006 7:43 PM
> > To: Java Programming on and around the iSeries / AS400
> > Subject: Loading Classes from Tables
> > 
> > I want to store some classes in a table, specifically a blob 
> > column in a
> > table and then load them at run time from the table. 
> >  
> > According to the spec, I can then create a class at runtime by
> > retrieving the blob as a byte array and then calling defineClass()
> > passing it the byte array and then resolveClass() and passing it the
> > class.
> >  
> > Has anyone done this before? I assume the iSeries JVM has no problem
> > with this, but I'd love to know I'm not going down a dead end.
> >  
> > -Walden
> >  
> > ------------
> > Walden H Leverich III
> > Tech Software
> > (516) 627-3800 x3051
> > WaldenL@xxxxxxxxxxxxxxx
> > http://www.TechSoftInc.com
> > <blocked::blocked::http://www.techsoftinc.com/> 
> > 
> > Quiquid latine dictum sit altum viditur.
> > (Whatever is said in Latin seems profound.)
> > 
> >  
> > -- 
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