Hi, thats strange even without a mapping file such a unmarshalling scenario works for me. Could you provide a little bit more detail? As far as I know reflection is not involved if you use a mapping-file (assuming you not specified the autocomplete feature in the mapping-file). Anyway could you also check your not using one of the static unmarshalling methods? This is a common mistake as your mapping-file is ignored then in unmarshalling.
Regards, Martin -----Ursprüngliche Nachricht----- Von: avner21J [mailto:[email protected]] Gesendet: Montag, 21. Juni 2010 07:20 An: [email protected] Betreff: [castor-user] org.exolab.castor.xml.MarshalException:Unable to instantiate java.util.List Hi, I am using castor (ver 1.3.1) to unmarshal an xml into a java object. This object has member variables as collections (List). Even though in the mapping file I used collections attribute of field tag and has set it to arraylist, it is still throwing this exception. After doing a bit of research on this,I found that since UnmarshalHandler uses reflection to create object from xml, it is trying to invoke java.util.List.newInstance() which might be the root of the problem. The class which I am trying to unmarshal is an already existing class and I cannot change the type of the member variables to ArrayList from List. Exception Trace is below: Caused by: java.lang.InstantiationException: java.util.List() method not found at org.exolab.castor.xml.UnmarshalHandler.createInstance(UnmarshalHandler.java:2584) at org.exolab.castor.xml.UnmarshalHandler.startElement(UnmarshalHandler.java:2348) at org.exolab.castor.xml.UnmarshalHandler.startElement(UnmarshalHandler.java:1436) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) I am stuck with this. Please help me resolve this. -- View this message in context: http://old.nabble.com/org.exolab.castor.xml.MarshalException%3AUnable-to-instantiate-java.util.List-tp28945150p28945150.html Sent from the Castor - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
