Hello there again!
I still have the problem unmarshalling arrays of java interfaces. I post
this message again, maybe it was lost somewhere. I just downloaded the
lastest CVS version of Castor but the problem still exists. Is this a bug?
Please look at the following simple example:
Class1:
public class ArrayTest implements ArrayTestInt {
private String[] strings = null;
}
Class 2:
public class ArrayTest2 implements ArrayTestInt {
private String[] strings = null;
}
Class3:
public class ArrayTest3 {
private ArrayTestInt[] tests;
public ArrayTestInt[] getTests() {
return tests;
}
public void setTests(ArrayTestInt[] tests) {
this.tests = tests;
}
}
Interface1:
public interface ArrayTestInt {
}
TesterClass:
import java.io.Serializable;
public class ArrayTester {
public static void main(String[] args) {
ArrayTest test = new ArrayTest();
ArrayTest2 test2 = new ArrayTest2();
ArrayTest3 test3 = new ArrayTest3();
test3.setTests(new ArrayTestInt[] { test, test2 });
ByteArrayOutputStream stream = new ByteArrayOutputStream();
PrintWriter writer = new PrintWriter(stream);
try {
Marshaller.marshal(test3, writer);
System.out.println(stream.toString());
} catch(Exception e) {
}
StringReader reader = new StringReader(stream.toString());
try {
ArrayTest3 test4 = (ArrayTest3)
Unmarshaller.unmarshal(ArrayTest3.class, reader);
} catch(Exception e) {
}
}
}
I convert an object with an array of objects of type ArrayTestInt into xml
and get the following output:
<?xml version="1.0"?>
<array-test3><tests xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:type="java:ArrayTest"/><tests xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance"; xsi:type="java:ArrayTest2
"/></array-test3>
When I convert this back into an object I get the following exception:
org.xml.sax.SAXException: unable to add 'tests' to <array-test3> due to the
following exception:
>>>--- Begin Exception ---<<<
java.lang.IllegalArgumentException: array element type mismatch
at java.lang.reflect.Array.set(Native Method)
at
org.exolab.castor.mapping.loader.J1CollectionHandlers$1.add(J1CollectionHandlers.java:109)
at
org.exolab.castor.mapping.loader.FieldHandlerImpl.setValue(FieldHandlerImpl.java:513)
at
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:526)
at
org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1392)
at
org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1180)
at
org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanner.java:1861)
at
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1234)
at
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:338)
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:270)
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:391)
at XMLUtilities.convertXMLToObject(XMLUtilities.java:96)
at ArrayTester.main(ArrayTester.java:16)
>>>---- End Exception ----<<<
at
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:557)
at
org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1392)
at
org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1180)
at
org.apache.xerces.framework.XMLDocumentScanner.scanElement(XMLDocumentScanner.java:1861)
at
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1234)
at
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:952)
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:338)null
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:270)
at
org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:391)
at XMLUtilities.convertXMLToObject(XMLUtilities.java:96)
at ArrayTester.main(ArrayTester.java:16)
I don't want to use a mapping file because my real objects are a bit
complicated. Could you tell me what I should do to solve my problem?
I searched the mail archive and found a similiar problem posted in february
2001 but I didn't find any answer. Please help!
Thanks in advance
stefan
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