Re: Accessing public static final constants from JXTemplate

[Jeremy Quinn]

On Friday, August 8, 2003, at 08:26 PM, Hunsberger, Peter wrote:

Jeremy Quinn <[EMAIL PROTECTED]> responds:

On Friday, August 8, 2003, at 07:56 PM, Hunsberger, Peter wrote:

Jeremy Quinn <[EMAIL PROTECTED]> asks:

I have a class called Constants, that is like this:

public final class Constants {
        public static final String FAILURE = "Failed";
        public static final String CANCEL_ACTION = "Cancelled";
        // etc.
}
I wish to share this between my Java 'biz logic', my
FlowScripts and
the View Layer.

  I have the first two working as expected, the third I
cannot work
out .....

Is it possible to pass the Constants class to the JXTemplate view
layer in such a way that I can extract their values?
I have tried several ways of sending the Constants class
to the view
layer, and using #{CANCEL_ACTION} (etc.) in my template, without
success.
Any suggestions?

Yes, but you may not like it...  We build our static
constants from an
XML file using an XSLT transform to create the Java code:

Thanks for your reply, but I cannot work out what you mean from what
you have written.
Might have helped if I gave you a sample XML def?

<package name="org.stjude.ct.ui">
    <message>
        <field name="MESSAGE" min="0" max="*">msg</field>
        <field name="MESSAGE_TYPE" min="1" max="1">type</field>
    </message>
</package>
Then using the XSLT transform on this XML you get the Java file:

package org.stjude.ct.ui;

/**
 * Static constant values used in the UI layer
 *
 * ***** Do not alter this file *****
 *
 * This file was produced from the source UIConstants.xml
 * See the comments in that file for information on how to
 * update and produce this file
 *
 */
public abstract class UIConstants {
   public static final String MESSAGE = "msg";
   public static final String MESSAGE_TYPE = "type";
}
Now you have your constants for your Java code.  Since they originated
from an XML file you can reference the XML file in any other
transform/transformer you might have (use aggregation in the sitemap if
you're not comfortable with the document() function and the caching
implications)...
OK, thats a bit clearer ;)

But I still don't understand how I would go about using these constants 
from inside JXTemplate XPath expressions.

Thanks

regards Jeremy