unmarshalling into single class using eclipselink - jaxb

Question

i have created a Company class that does produce xml like below using marshalling :
<?xml version="1.0" encoding="UTF-8"?>
<ns2:company xmlns:ns2="http://www.example.com/">
<ns2:employee>
<job>sogi</job>
<name>togi</name>
<age>22</age>
</ns2:employee>
</ns2:company>
Note:I used #XmlPath("employee/job/text()") tag in Company class to get the required path.
but when unmarshalling i use the same Company class,i do not get the correct object values.Instead i get null values.

Answer 1

You need to include namespace information in the #XmlPath annotation.
package-info
Since your XML document has namespace qualification, you will need to leverage the package level #XmlSchema annotation to specify the namespace information.
#XmlSchema(
namespace="http://www.example.com/",
xmlns={
#XmlNs(namespaceURI = "http://www.example.com/", prefix = "foo")
}
)
package forum14848450;
import javax.xml.bind.annotation.*;
Company
In the #XmlPath mapping for the fragments of the XmlPath that are namespace qualified you need to leverage the prefixes you defined on the #XmlSchema annotation.
package forum14848450;
import javax.xml.bind.annotation.XmlRootElement;
import org.eclipse.persistence.oxm.annotations.XmlPath;
#XmlRootElement
public class Company {
#XmlPath("foo:employee/job/text()")
private String employeeJob;
#XmlPath("foo:employee/name/text()")
private String employeeName;
#XmlPath("foo:employee/age/text()")
private int employeeAge;
}
jaxb.properties
To specify MOXy as your JAXB provider you need to include a file called jaxb.properties in the same package as your domain model with the following entry (see: http://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as-your.html).
javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory
Demo
The demo code below will unmarshal the document from your question, and then marshal it back to XML.
package forum14848450;
import java.io.File;
import javax.xml.bind.*;
public class Demo {
public static void main(String[] args) throws Exception {
JAXBContext jc = JAXBContext.newInstance(Company.class);
Unmarshaller unmarshaller = jc.createUnmarshaller();
File xml = new File("src/forum14848450/input.xml");
Company company = (Company) unmarshaller.unmarshal(xml);
Marshaller marshaller = jc.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.marshal(company, System.out);
}
}
Output
Below is the output from running the demo code. Note how the output document uses the prefixes defined in the #XmlPath annotation.
<?xml version="1.0" encoding="UTF-8"?>
<foo:company xmlns:foo="http://www.example.com/">
<foo:employee>
<job>sogi</job>
<name>togi</name>
<age>22</age>
</foo:employee>
</foo:company>
For More Information
http://blog.bdoughan.com/2010/09/xpath-based-mapping-geocode-example.html