Transformer serialize problem

Question

Hello
I have a Java application which has a little method to serialize a javax.xml.transform.Transformer into a byte[].
Here is the method:
Object obj = transformer; 
ByteArrayOutputStream bos = new ByteArrayOutputStream() ; 
ObjectOutput out = new ObjectOutputStream(bos); 
out.writeObject(obj); 
out.close(); 
// Get the bytes of the serialized object 
byte[] buf = bos.toByteArray(); 
...  However, I am getting the following error:
java.io.NotSerializableException: net.sf.saxon.Controller
at java.io.ObjectOutputStream.writeObject0(Unknown Source)
at java.io.ObjectOutputStream.writeObject(Unknown Source)
at .processing.transform.cache.CacheTransformers.addTransformer(CacheTransformers.java:62)
How can I solve the problem? Is there any other way to serialize a javax.xml.transform.Transformer object?
Thanks
Regards

Answer 1

Thanks for your reply.
My main concern is, as you guess, the performance.
When I create the transformer
    Transformer foTrans = tFactoryXML2FO.newTransformer(streamSource);
  where "streamSource" is a StreamSource object with my XSLT, the time taken just for this line is more or less 8 seconds (which its a lot).
So, to try, reduce the time taken, I have tried several approaches. One of them is using Caching. For caching, I searched over the Internet and I found Apache JSC. I tried it but I got an error :
"java.io.NotSerializableException: net.sf.saxon.Controller"
This error happens when I try to write the Transformer object into an ObjectOutput (line ***):
       ByteArrayOutputStream bos = new ByteArrayOutputStream() ;
       ObjectOutput out = new ObjectOutputStream(bos);
       out.writeObject(transformer); (***)
       out.close();
     // Get the bytes of the serialized object
     byte[] buf = bos.toByteArray();
        cache.put(key, buf);
        ....Did you understood my problem?
Thanks again