EclipseLink/UserGuide/MOXy/Type Level/Setting Up Namespace Information

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Setting Up Namespace Information

Most XL documents are qualified with a namespace. You can qualify elements at the following levels:

  • Package
  • Type
  • Field or Property

In most cases, package level annotation is sufficient. You can use the other levels to customize your document. Use the the @XmlSchema annotation to specify the namespace.


Package Level

Use the @XmlSchema annotation on the package to set a default namespace and specify that all elements in the package are qualified with the namespace.

@XmlSchema(
    namespace = "http://www.example.org/package",
    elementFormDefault = XmlNsForm.QUALIFIED)
package example;
 
import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;

This will produce the following XML:

<customer
    xmlns="http://www.example.org/package"
    id="123">
    <name>Jane Doe</name>
</customer>

All elements are qualified with the http://www.example.org/package namespace.


Type Level

Type level annotations will override the package level namespace.

package example;
 
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
 
@XmlRootElement
@XmlType(namespace="http://www.example.org/type")
public class Customer {
 
    private long id;
    private String name;
 
    @XmlAttribute
    public long getId() {
        return id;
    }
 
    public void setId(long id) {
        this.id = id;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
}

This will produce the following XML:

<ns2:customer
    xmlns="http://www.example.org/type"
    xmlns:ns2="http://www.example.org/package"
    id="123">
    <name>Jane Doe</name>
</ns2:customer>

Only elements inside the Customer type are qualified with the http://www.example.org/type namespace.


Field/Property Level

You can override the package or type namespaces at the property/field level. All attribute and element annotations accept the namespace parameter.

package example;
 
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
 
@XmlRootElement
@XmlType(namespace="http://www.example.org/type")
public class Customer {
 
    private long id;
    private String name;
 
    @XmlAttribute
    public long getId() {
        return id;
    }
 
    public void setId(long id) {
        this.id = id;
    }
 
    @XmlElement(namespace="http://www.example.org/property")
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
}

This will produce the following XML:

<ns2:customer
    xmlns="http://www.example.org/property"
    xmlns:ns2="http://www.example.org/package"
    id="123">
    <name>Jane Doe</name>
</ns2:customer>

The Name element is qualified with the http://www.example.org/property namespace.


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