javax.xml.bind.annotation.XmlID Maven / Gradle / Ivy
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package javax.xml.bind.annotation;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;
/**
*
* 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>
*
*
* @author Sekhar Vajjhala, Sun Microsystems, Inc.
* @see XmlIDREF
* @since JAXB2.0
*/
@Retention(RUNTIME) @Target({FIELD, METHOD})
public @interface XmlID { }