[xstream-dev] [jira] Closed: (XSTR-100) Cannot deserialize DefaultStyledDocument

Message:

   The following issue has been closed.

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View the issue:
  http://jira.codehaus.org/browse/XSTR-100

Here is an overview of the issue:
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        Key: XSTR-100
    Summary: Cannot deserialize DefaultStyledDocument
       Type: Bug

     Status: Closed
   Priority: Critical
 Resolution: FIXED

 Original Estimate: Unknown
 Time Spent: Unknown
  Remaining: Unknown

    Project: XStream
 Components: 
             Core
   Fix Fors:
             1.0.2

   Assignee: 
   Reporter: Joe Walnes

    Created: Tue, 20 Jul 2004 8:34 AM
    Updated: Fri, 23 Jul 2004 2:12 PM

Description:

I have a problem when deserializing an instance of the 
javax.swing.text.DefaultStyledDocument class.
The problem is not really while deserializing : some private fields of this JDK 
class are mentionned as "transient" fields (like this one : private transient 
Vector listeningStyles;). So they are not serialized.

The problem starts when I use the deserialized object (with the 'fromXML' 
method) : those previous "transient" fields have not been initialized and their 
use via DefaultStyledDocument or other JDK classes methods raise a 
NullPointerException...

So I tried the unmarshal method to initialise those fields with the default 
constructor first, and then deserialize:

XStream xstream = new XStream();
DefaultStyledDocument doc = new DefaultStyledDocument();
String xml = xstream.toXML(doc);
DefaultStyledDocument tmpDoc = new DefaultStyledDocument();
doc = (DefaultStyledDocument) xstream.unmarshal(
        new XppReader(new StringReader(xml)),
        tmpDoc);

...but this code raise an exception (at the end of this message). Can someone 
tell me what is wrong with this code or give me a solution to 
serialize/deserialize a DefaultStyledDocument ?

Thanks in advance.

-- 
Sebastien



********************************************************
com.thoughtworks.xstream.converters.ConversionException: No such field 
javax.swing.text.DefaultStyledDocument.children
---- Debugging information ----
required-type       : javax.swing.text.DefaultStyledDocument$SectionElement
cause-message       : No such field 
javax.swing.text.DefaultStyledDocument.children
class               : javax.swing.text.DefaultStyledDocument
message             : No such field 
javax.swing.text.DefaultStyledDocument.children
line number         : 4
path                : 
/javax.swing.text.DefaultStyledDocument/buffer/root/children
cause-exception     : 
com.thoughtworks.xstream.converters.reflection.ObjectAccessException
-------------------------------
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(Unknown 
Source)
    at 
com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(Unknown
 Source)
    at 
com.thoughtworks.xstream.converters.reflection.ReflectionConverter.unmarshal(Unknown
 Source)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(Unknown 
Source)
    at 
com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(Unknown
 Source)
    at 
com.thoughtworks.xstream.converters.reflection.ReflectionConverter.unmarshal(Unknown
 Source)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(Unknown 
Source)
    at 
com.thoughtworks.xstream.core.ReferenceByXPathUnmarshaller.convertAnother(Unknown
 Source)
    at com.thoughtworks.xstream.core.TreeUnmarshaller.start(Unknown Source)
    at 
com.thoughtworks.xstream.core.ReferenceByXPathMarshallingStrategy.unmarshal(Unknown
 Source)
    at com.thoughtworks.xstream.XStream.unmarshal(Unknown Source)
********************************************************



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