Maps a JavaBean property to XML ID.
To preserve referential integrity of an object graph across XML serialization followed by a XML deserialization, requires an object reference to be marshalled by reference or containment appropriately. Annotations @XmlID
and @XmlIDREF
together allow a customized mapping of a JavaBean property's type by containment or reference.
Usage
The
@XmlID
annotation can be used with the following program elements:
- a JavaBean property
- non static, non transient field
See "Package Specification" in javax.xml.bind.package javadoc for additional common information.
The usage is subject to the following constraints:
- At most one field or property in a class can be annotated with
@XmlID
.
- The JavaBean property's type must be
java.lang.String
.
- The only other mapping annotations that can be used with
@XmlID
are: @XmlElement
and @XmlAttribute
.
Example: Map a JavaBean property's type to xs:ID
// Example: code fragment
public class Customer {
@XmlAttribute
@XmlID
public String getCustomerID();
public void setCustomerID(String id);
.... other properties not shown
}
<!-- Example: XML Schema fragment -->
<xs:complexType name="Customer">
<xs:complexContent>
<xs:sequence>
....
</xs:sequence>
<xs:attribute name="customerID" type="xs:ID"/>
</xs:complexContent>
</xs:complexType>