i haven't applied your patch for a couple of reasons:
1. i'd prefer to solve the more general problem of being able to introspect interfaces rather than implementations
2. proxy is 1.3 and so i'd prefer not to introduce a dependency on Proxy (if it can be avoided).
hopefully the code i've committed will provide an alternative solution. you'll need to do a little more work outside the betwixt code something like:
XMLIntrospector introspector = ...
...
introspector.setClassNormalizer( new ClassNormalizer() {
public Class normalize( Class clazz ) {
if (Proxy.isProxyClass(clazz) && class.getInterfaces().length
> 0 ) {
return clazz.getInterfaces()[0];
}
}
});i've covered an alternative (if your container implementation doesn't use Proxy's) in the online documentation.
hope this solves your problem.
- robert
On Friday, August 29, 2003, at 01:17 AM, Christoph Gaffga wrote:
hi,
I've implemented a way to customize the serialization of EJBs through
dot-betwixt-files.
My solution looks up the dot-betwixt-file if the class to serialize is a
Proxy. I only changed some lines in XMLIntrospector.findByXMLDescriptor.
and here is the patch for it. I hope it finds it way into the betrixt
codebase.
I found it very usefull as it doesn't realy make sense to serialize the
proxy class (perheaps it makes sense to serialize the remote handle in some
cases).
instead- How/Where can I change behavior to use the interface-Descriptionof the classes one if no dot-betwixt-file ist found?
this issue I haven't solved yet.
3. please don't lose enthusiasm if it takes a while for the patch to get committed.
Sure, but please let me know, if you reject it, and why. Or in favor of witch solution.
but i'm trying to be careful about the design and get it right (thistime).
Yeah, and you did a great job. I realy like, what betwix does.
regards Christoph ([EMAIL PROTECTED])
cvs diff -u XMLIntrospector.java
Index: XMLIntrospector.java
===================================================================
RCS file:
/home/cvspublic/jakarta-
commons/betwixt/src/java/org/apache/commons/betwixt/
XMLIntrospector.java,v
retrieving revision 1.23
diff -u -w -b -B -r1.23 XMLIntrospector.java
--- XMLIntrospector.java 27 Jul 2003 18:47:39 -0000 1.23
+++ XMLIntrospector.java 28 Aug 2003 23:54:45 -0000
@@ -61,6 +61,7 @@
import java.beans.IntrospectionException;
import java.beans.Introspector;
import java.beans.PropertyDescriptor;
+import java.lang.reflect.Proxy;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
@@ -735,21 +736,29 @@
* Attempt to lookup the XML descriptor for the given class using the
* classname + ".betwixt" using the same ClassLoader used to load the
class
* or return null if it could not be loaded
+ * If <code>aClass</code> is a Proxy use the first interface instead.
*
* @param aClass digester .betwixt file for this class
* @return XMLBeanInfo digested from the .betwixt file if one can be
found.
* Otherwise null.
*/
protected synchronized XMLBeanInfo findByXMLDescriptor( Class aClass )
{
+ Class showClass = aClass;
+
+ // If the class is a Proxy, use the interface
+ if ( Proxy.isProxyClass(aClass) && aClass.getInterfaces().length >
0 ) {
+ showClass = aClass.getInterfaces()[0];
+ }
+
// trim the package name
- String name = aClass.getName();
+ String name = showClass.getName();
int idx = name.lastIndexOf( '.' );
if ( idx >= 0 ) {
name = name.substring( idx + 1 );
}
name += ".betwixt";
- URL url = aClass.getResource( name ); + URL url = showClass.getResource( name ); if ( url != null ) { try { String urlText = url.toString();
--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
