The issue is probably that the object and the key are the same, you can
either try specifying the identity field or perhaps use your addChild
method.
--Keith
Keith Visco wrote:
>
> Hi Erik,
>
> It works fine if you comment out the first 4 lines of your testParent
> method as such:
>
> public static void testParent(Parent p) {
> //Child c = p.getChild("fred_key");
> //System.out.println("just got first child");
> //System.out.println(" child: [" + c + "] [" + c.toString() +
> "]");
> //System.out.println("key: Fred_key child: [" +
> p.getChild("fred_key").toString() + "]");
>
> Map kids = p.getChildren();
> for (Iterator itr = kids.values().iterator(); itr.hasNext();) {
> Child kid = (Child)itr.next();
> System.out.println("Here is a child [" + kid.toString() +
> "] key [" + kid.getKey() + "]");
> }
>
> }
>
> --Keith
>
> [EMAIL PROTECTED] wrote:
> >
> > On the lastest cut of CVS, I'm trying to marshal/unmarshal a map, like
> > in this post:
> >
> > http://www.mail-archive.com/[email protected]/msg06205.html
> >
> > Marshalling works great. When I unmarshall, there is no data in my
> > object.
> > I tried a different approach and had problems there, too.
> > I'll send the results of Approach #2 in a separate email.
> >
> > Thanks in advance for looking at this.
> >
> > ////////// mapping.xml /////////////////////////////////////////
> > <mapping>
> > <class name="Parent">
> > <field name="children" type="Child" collection="map"
> > get-name="getChildren"
> > set-name="setChildren">
> > <bind-xml name="string" node="element"/>
> > </field>
> > </class>
> > <class name="Child" auto-complete="true">
> > <map-to xml="Child"/>
> > </class>
> > </mapping>
> >
> > //////// Parent.java /////////////////////////////////////////
> > import java.util.Map;
> > import java.util.HashMap;
> >
> > public class Parent {
> >
> > HashMap _children = new HashMap();
> >
> > public void addChild(Child c) {
> >
> > _children.put(c.getKey(), c);
> > }
> >
> > public Child getChild(Object key) {
> > return (Child) _children.get(key);
> > }
> >
> > public Map getChildren() {
> > return _children;
> > }
> > public void setChildren(Map m) {
> > _children = (HashMap)m;
> > }
> > }
> >
> > ///////////// Child.java //////////////////////////////////
> > public class Child {
> > String firstName = null;
> > Object key = null;
> >
> > public Child(){}
> >
> > public String getFirstName() {
> > return firstName;
> > }
> >
> > public void setFirstName(String strName) {
> > firstName = strName;
> > }
> > public void setKey(Object objKey) {
> > key = objKey;
> > }
> >
> > public Object getKey() {
> > return key;
> > }
> >
> > public String toString() {
> > return firstName;
> > }
> > }
> >
> > ///////////// HashTest.java //////////////////////////
> > import java.util.HashMap;
> > import java.util.Iterator;
> > import java.util.Collection;
> > import java.util.Map;
> >
> > import java.io.StringWriter;
> > import java.io.StringReader;
> >
> > import org.exolab.castor.mapping.Mapping;
> > import org.exolab.castor.mapping.MappingException;
> >
> > import org.exolab.castor.xml.Unmarshaller;
> > import org.exolab.castor.xml.Marshaller;
> >
> > import java.io.IOException;
> > import java.io.FileReader;
> > import java.io.OutputStreamWriter;
> >
> > import org.xml.sax.InputSource;
> >
> > public class HashTest {
> >
> > public static void main(String[] args) {
> >
> > Parent p = new Parent();
> >
> > Child c = null;
> > c = new Child(); c.setFirstName("Betty");
> > c.setKey("betty_key"); p.addChild( c);
> > c = new Child(); c.setFirstName("Wilma");
> > c.setKey("wilma_key"); p.addChild( c );
> > c = new Child(); c.setFirstName("Fred");
> > c.setKey("fred_key"); p.addChild( c );
> > c = new Child(); c.setFirstName("Barney");
> > c.setKey("barney_key"); p.addChild( c );
> >
> > testParent(p);
> > Mapping mapping = new Mapping();
> >
> > try {
> > // 1. Load the mapping information from the file
> > mapping.loadMapping( "mapping.xml" );
> >
> > StringWriter sw = new StringWriter();
> > // 4. marshal the data with and print the XML in the console
> > Marshaller marshaller = new Marshaller(sw);
> >
> > marshaller.setMapping(mapping);
> > marshaller.marshal(p);
> > System.out.println("Here is the data [" + sw.toString() + "]");
> >
> > StringReader sr = new StringReader(sw.toString());
> > // 2. Unmarshal the data
> > Unmarshaller unmar = new Unmarshaller(mapping);
> > Parent newParent = (Parent)unmar.unmarshal(sr);
> >
> > ///////////////////////////////////////////////////////
> > ///////
> > /////// P R O B L E M
> > ///////
> > System.out.println("PROBLEM: Data didn't get unmarshalled!");
> > testParent(newParent);
> >
> > } catch (Exception e) {
> > System.out.println(e);
> > }
> > }
> > public static void testParent(Parent p) {
> > Child c = p.getChild("fred_key");
> > System.out.println("just got first child");
> > System.out.println(" child: [" + c + "] [" + c.toString() + "]");
> > System.out.println("key: Fred_key child: [" +
> > p.getChild("fred_key").toString() + "]");
> >
> > Map kids = p.getChildren();
> >
> > for(Iterator itr = kids.values().iterator(); itr.hasNext();) {
> > Child kid = (Child)itr.next();
> > System.out.println("Here is a child [" + kid.toString() + "]
> > key [" + kid.getKey() + "]");
> > }
> >
> > }
> >
> > }
> >
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