XmlJoinNode (EclipseLink Core 3.0.4-RC1 API)

```
@Target({METHOD,FIELD})
@Retention(RUNTIME)
public @interface XmlJoinNode
```
XmlJoinNode is used in conjunction with XmlKey to specify a reference mapping. This is similar to XmlID and XmlIDREF but allows for keys that are of types other than ID. When used with XmlJoinNodes can be used to allow composite keys. The referencedXmlPath must match the xpath of a field on the target class that has been annotated with either XmlID or XmlKey.
Example:
```
 @XmlRootElement
 @XmlAccessorType(XmlAccessType.FIELD)
 public class Employee {

     @XmlKey
     public String id;

     public String department;

       @XmlJoinNode(xmlPath="manager/id/text()", referencedXmlPath="id/text()")
     public Employee manager;
 }
 
```
See Also:

XmlKey, XmlJoinNodes

- Required Element Summary
  
  Required Elements
  Modifier and Type Required Element Description
  
  String referencedXmlPath
  
  String xmlPath

Element Detail
- xmlPath
```
String xmlPath
```

- referencedXmlPath
```
String referencedXmlPath
```