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Difference between revisions of "EclipseLink/UserGuide/MOXy/Type Level/Setting Up Namespace Information"
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Revision as of 16:57, 6 January 2011
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Key API
Contents
Setting Up Namespace Information
Most XML documents are qualified with a namespace. You can namespace-qualify elements of your Java class at the following levels:
- Package
- Type
- Field / 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. This information is specified in a special Java source file, package-info.java.
@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"> <name>Jane Doe</name> </customer>
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.
