Re: JCA Library usage

["J. Lewis Muir" <jlmuir@anl.gov>]

David Dudley wrote:
> I've actually worked through all the problems I was having getting JCA
> setup, and now as an application, it seems to be operating correctly.
>
> I'm also using the CAJ library with this, so there is no native code in
> the thing, and I can run it on any machine I copy the application on to
> (major plus!).
>
> All is fine and good to be able to use this, -except-, in the case of
> distributing an application, or as an applet, there is no way to provide
> a location of where to get the 'JCALibrary.properties' file.  Can the
> capability of providing a location (preferably being able to use a URL
> Link as well) be added to 'getInstance' (or should I do it?)?

I second this request. It would be great to be able to load the 
JCALibrary.properties file from a JAR file rather than referring to the 
file system.

Maybe even better would be to modify the algorithm used to find the 
JCALibrary.properties file so that in addition to looking where it looks 
in the file system, it will also look on the classpath via the class 
loader (e.g. Class#getResource or Class#getResourceAsStream). This is 
similar to how log4j <http://logging.apache.org/log4j/> finds its 
properties file.

My workaround is to package my own custom JCALibrary.properties file in 
my application JAR file, load it via Class#getResourceAsStream, create a 
JCA DefaultConfiguration, set its properties from the properties loaded 
from my custom JCALibrary.properties file, and then create the context 
with it.

-lewis

> Also, is there a way to create a channel and then 'add' a connection
> Listener as a separate function?  Or a way to close a channel?
>
> Since this package is supported by cosylab, though I'd suggest it
> first, and see what kind of response.
>
> David