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sam504u
 Post subject: Hibernate fails to load values from DB into a Bean
PostPosted: Mon Oct 17, 2005 2:53 pm 
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Beginner

Joined: Tue Jul 19, 2005 1:24 pm
Posts: 22
Hi All,

I am loading a DB record via Hibernate using this:

Person person = (Person) session.load(Person.class,5667);

and then trying to output the Person Bean into an XML format using Apache Commons Betwixt like this:

Main Class:
Code:

BeanWriter beanWriter;
StringWriter outputWriter;

       //THIS IS HOW I CONFIGURE BETWIXT TO GET MY DESIRED XML OUTPUT

        outputWriter = new StringWriter();
        // For well-formed xml, we need to add the prolog
        outputWriter.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
   
        // Create a BeanWriter which writes to our prepared stream
        beanWriter = new BeanWriter(outputWriter);
     
        //Tweaked configuration for getting desired XML o/p    for XML SearchResponse                   
        beanWriter.getXMLIntrospector().getConfiguration().setWrapCollectionsInElement(false);
        beanWriter.getBindingConfiguration().setMapIDs(true);
        beanWriter.enablePrettyPrint();


beanWriter.write("perspectiveResponse", new PerspectiveResponse(person));
System.out.println( outputWriter.toString());



But when I run my Main class it gives me an error:

java.lang.UnsupportedOperationException
at org.hibernate.util.IdentityMap.keySet(IdentityMap.java:162)
at org.hibernate.stat.SessionStatisticsImpl.getEntityCount(SessionStatisticsImpl.java:21)
at org.hibernate.stat.SessionStatisticsImpl.toString(SessionStatisticsImpl.java:37)
at java.lang.String.valueOf(String.java:2577)
at java.lang.StringBuffer.append(StringBuffer.java:220)
at org.apache.commons.betwixt.io.AbstractBeanWriter.pushBean(AbstractBeanWriter.java:1019)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:348)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:945)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:820)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:362)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:945)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:820)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:362)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:267)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElementContent(AbstractBeanWriter.java:936)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeElement(AbstractBeanWriter.java:820)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:362)
at org.apache.commons.betwixt.io.AbstractBeanWriter.writeBean(AbstractBeanWriter.java:243)
at org.apache.commons.betwixt.io.AbstractBeanWriter.write(AbstractBeanWriter.java:174)
at com.mms.HibernateTest.main(HibernateTest.java:74)


I am not sure why Hibernate is throwing me this error. Has anybody worked on the combination of Hibernate and Betwixt before ??? ( I mean loading a Bean with Hibernate and outputing it via Betwixt)

Did anyone come across through this problem?

All help and suggestions are greatly appreciate !!!

Thanks
Sam
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sam504u
 Post subject:
PostPosted: Mon Oct 17, 2005 2:55 pm 
Beginner
Beginner

Joined: Tue Jul 19, 2005 1:24 pm
Posts: 22
FYI this is how my PerspectiveResponse Bean looks like:


Code:
public class PerspectiveResponse {
    private Object object;
   
    public PerspectiveResponse() {
       
    }
    public PerspectiveResponse(Object object) {
        setObject(object);
    }
   
   
    public Object getObject() {
        return this.object;
    }
    public void setObject(Object object) {
        this.object = object;
    }

}
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sam504u
 Post subject:
PostPosted: Mon Oct 17, 2005 3:53 pm 
Beginner
Beginner

Joined: Tue Jul 19, 2005 1:24 pm
Posts: 22
I got this working, was just supposed to include laszy="false" in my mapping file ....
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