Keith,
I get the same exception even if I specify the collection="map" attribute
for the field. I'm posting the code. Would be nice of any of you could tweak
the parameters a bit and see if you can get it going ( I've alread tried a
few things without any success ).
public class CastorExperiments
{
public static void main(String[] args) throws Exception
{
Writer writer;
String mappingString =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
"<mapping><class name=\"tavant.SimpleBean\" >\n" +
"<description>Default mapping for class
tavant.SimpleBean</description>\n" +
"<map-to xml=\"simple-bean\"/>\n" +
"<field name=\"map\" required=\"false\" auto-complete=\"false\"
transient=\"false\" \n" +
"direct=\"false\" collection=\"map\">\n" +
"<bind-xml name=\"map\" node=\"element\"/>\n" +
"</field>\n" +
"</class>\n" +
"</mapping>\n";
System.out.println(mappingString);
Mapping mapping = new Mapping();
InputSource source = new InputSource(new StringReader(mappingString));
mapping.loadMapping(source);
Unmarshaller unmarshaller = new Unmarshaller(mapping);
Marshaller marshaller = new Marshaller(writer = new StringWriter());
marshaller.setMapping(mapping);
SimpleBean simpleBean = new SimpleBean();
HashMap map = new HashMap();
map.put("key","value");
map.put("key1","value");
simpleBean.setMap(map);
marshaller.marshal(simpleBean);
System.out.println(writer.toString());
System.out.println(unmarshaller.unmarshal(new
StringReader(writer.toString())));
}
}
-Radhakrishnan
-----Original Message-----
From: Keith Visco [mailto:[EMAIL PROTECTED]
Sent: Wednesday, February 25, 2004 1:08 PM
To: [EMAIL PROTECTED]
Subject: Re: [castor-dev] Trouble mapping java.util.Map
Radhakrishnan,
You are missing the collection="map" attribute in your mapping file:
Change your mapping as such:
<mapping>
<class name="tavant.SimpleBean" >
<description>Default mapping for class
tavant.SimpleBean</description>
<map-to xml="simple-bean"/>
<field name="map" type="org.exolab.castor.mapping.MapItem"
collection="map">
<bind-xml name="map" node="element"/>
</field>
</class>
</mapping>
Actually, you probably don't even need to specify the type attribute in
this case, I think the below also works fine:
<mapping>
<class name="tavant.SimpleBean" >
<description>Default mapping for class
tavant.SimpleBean</description>
<map-to xml="simple-bean"/>
<field name="map" collection="map">
<bind-xml name="map" node="element"/>
</field>
</class>
</mapping>
--Keith
Radhakrishnan J wrote:
>
> Hi,
>
> I downloaded Castor XML 0.9.5.3 rc1 to try out the built-in support for
> java.util.Map. Wrote a simple test program. The following is the output -
>
> The class -
>
> public class SimpleBean
> {
> private Map map;
>
> public Map getMap()
> {
> return map;
> }
>
> public void setMap(Map map)
> {
> this.map = map;
> }
> }
>
> The mapping -
>
> <?xml version="1.0" encoding="UTF-8"?>
> <mapping>
> <class name="tavant.SimpleBean" >
> <description>Default mapping for class tavant.SimpleBean</description>
> <map-to xml="simple-bean"/>
> <field name="map" required="false" direct="false" transient="false" >
> <bind-xml name="map" node="element"/>
> </field>
> </class>
> </mapping>
>
> The Obect - > XML transformation gives me -
>
> <?xml version="1.0" encoding="UTF-8"?>
> <simple-bean>
> <map xsi:type="java:org.exolab.castor.mapping.MapItem"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
> <key xsi:type="java:java.lang.String">key1</key>
> <value xsi:type="java:java.lang.String">value</value>
> </map>
> <map xsi:type="java:org.exolab.castor.mapping.MapItem"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
> <key xsi:type="java:java.lang.String">key</key>
> <value xsi:type="java:java.lang.String">value</value>
> </map>
> </simple-bean>
>
> But the XML -> Object, with the above XML as input throws the following
> error. Ideally I would like not to make any assumptions about the types
> of the keys and values of the map entries.
>
> org.xml.sax.SAXException: unable to add 'map' to <simple-bean> due to
> the following exception:
> >>>--- Begin Exception ---<<<
> java.lang.IllegalArgumentException: Type conversion error: could not set
> value of map(java.util.Map) with value of type
> org.exolab.castor.mapping.MapItem
> at
>
org.exolab.castor.mapping.loader.FieldHandlerImpl.setValue(FieldHandlerImpl.
java:474)
> at
>
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:893)
> at
>
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:960)
> at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatc
her.dispatch(Unknown
> Source)
> at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
> Source)
> at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
> at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
> at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
> at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:583)
> at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:491)
> at tavant.CastorExperiments.main(CastorExperiments.java:67)
> >>>---- End Exception ----<<<
>
> at
>
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:926)
> at
>
org.exolab.castor.xml.UnmarshalHandler.endElement(UnmarshalHandler.java:960)
> at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
> Source)
> at
>
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$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(Unmarshaller.java:583)
> at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:491)
> at tavant.CastorExperiments.main(CastorExperiments.java:67)
>
> Thanks,
> Radhakrishnan
>
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