Hi,
I was happy with Castor until I went mad about a silly error while
unmarshalling using a simply schema.
Here is the part of schema that causes the problem:
<xs:element name="Response">
<xs:complexType>
<xs:all maxOccurs="unbounded">
<xs:element ref="MessageList"/>
</xs:all>
</xs:complexType>
</xs:element>
<xs:element name="MessageList">
<xs:complexType>
<xs:all maxOccurs="unbounded">
<xs:element ref="ListItem"/>
</xs:all>
</xs:complexType>
</xs:element>
<xs:element name="ListItem">
<xs:complexType>
<xs:all>
<xs:element ref="MessageId"/>
<xs:element ref="FAD"/>
<xs:element ref="MessageNumber"/>
</xs:all>
</xs:complexType>
</xs:element>
And the code geneated by Castor works fine and marshalling is ok. But when I
try to unmarshall it it gives the following error:
java.lang.NullPointerException
at
org.exolab.castor.xml.util.XMLClassDescriptorImpl.getFieldDescriptor(Unknown
Source)
at org.exolab.castor.xml.UnmarshalHandler.startElement(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unkno
wn Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatc
her.dispatch(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.exolab.castor.xml.Unmarshaller.unmarshal(Unknown Source)
at org.exolab.castor.xml.Unmarshaller.unmarshal(Unknown Source)
at org.exolab.castor.xml.Unmarshaller.unmarshal(Unknown Source)
at a.Response.unmarshal(Response.java:179)
at a.xmlclient.PostManFrame$XmlInputListener.run(PostManFrame.java:255)
I could not do anything with it even if I played with my schema. I think
there is a problem about the intermediate class that Castor generated called
MessageListItem.java and its descriptor. Maybe it look for a
"<MessageListItem>" tag and could not find it and throws a nullpointer. This
is just a guess.
Can any one help me? By the way, I am using castor 0.9.3.21.
Thanx,
Tankut Koray
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