I'm having troubles converting from int[] in Java to a String in XML. My data
XML looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<data-object>
<ints>3 1 4 1 5 </ints>
</data-object>
and I have an IntObject.java:
public class IntObject {
private int [] ints;
public int[] getInts() {
return ints;
}
public void setInts(int[] ints) {
this.ints = ints;
}
}
I'm trying to map this with the following mapping
<mapping>
<class name="castortest.IntObject">
<map-to xml="data-object" />
<field name="Ints" collection="array" type="java.lang.String"
handler="castortest.IntConvert">
<bind-xml name="ints" node="element"/>
</field>
</class>
</mapping>
and the following IntConvert.java:
import java.util.Enumeration;
import org.exolab.castor.mapping.GeneralizedFieldHandler;
public class IntConvert extends GeneralizedFieldHandler
{
public IntConvert() {
super();
setCollectionIteration(false);
}
/**
* From int[] to String
*
public Object convertUponGet(Object value) {
StringBuffer keyString = new StringBuffer();
for (Enumeration<Integer> ae = (Enumeration<Integer>) value;
ae.hasMoreElements() ;) {
keyString.append(ae.nextElement()+" ");
}
return keyString.toString();
}
/**
* From String to int []
*
public Object convertUponSet(Object value) {
if (value == null) return null;
String [] keyArray = ((String) value).split(" ");
int [] intArray = new int[keyArray.length];
for (int i = 0; i < intArray.length; i++) {
intArray[i] = Integer.parseInt(keyArray[i]);
}
return intArray;
}
public Class<?> getFieldType() {
System.out.println("getFieldType");
int test [] = new int [] {3};
return test.getClass();
}
public Object newInstance( Object parent )
throws IllegalStateException
{
System.out.println("hmm");
//-- Since it's marked as a string...just return null,
//-- it's not needed.
return null;
}
}
Marshalling works, but I get an error when Unmarshalling:
org.exolab.castor.xml.MarshalException: Type conversion error: could not set
value of [EMAIL PROTECTED] with value of type
java.lang.String{File: [not available]; line: 3; column: 28}
at
org.exolab.castor.xml.Unmarshaller.convertSAXExceptionToMarshalException(Unmarshaller.java:761)
at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:727)
at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:616)
at castortest.UnmarshallerTest.main(UnmarshallerTest.java:29)
Caused by: java.lang.IllegalArgumentException: Type conversion error: could
not set value of [EMAIL PROTECTED] with value of type
java.lang.String
at
org.exolab.castor.mapping.loader.FieldHandlerImpl.setValue(FieldHandlerImpl.java:512)
at
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:1068)
at
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:1159)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:601)
(longer stack trace down)
Note that I'm using setCollectionIteration(false); because I want my XML to
only contain one <ints>3 1 4 1 5 </ints> line, not
<ints>3</ints><ints>1</ints> etc.
It does work when I change the last line of IntConvert to
return intArray[0]; // only returning first item
}
but then I only get back one number; it doesn't add all numbers.
Any suggestions?
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