org.eclipse.persistence.oxm.annotations
Annotation Type XmlNullPolicy

@Target(value={FIELD,METHOD})
@Retention(value=RUNTIME)
public @interface XmlNullPolicy

Purpose: Provide a means of using annotations to customise the handling of null values and their xml representation.

This annotation provides the user with a mechanism to customise the way that EclipseLink handles the reading and writing of null values. The following values can be specified:

• xsiNilRepresentsNull - This indicates that during unmarshal, an element with an xsi:nil="true" attribute specified should be unmarshaled as "null" into the object.
• emptyNodeRepresentsNull - This indicates that during unmarshal, an empty node "<element/>" should be unmarshalled to as null in the object model.
• isSetPerformedForAbsentNode - If this is set to true, then for each mapped element that was absent from the document during unmarshal, the property in java will be explicitly set to null.
• nullRepresentationForXml - Determines how a null value in the object model is written out to XML.

See Also:

XmlNullPolicy, XmlMarshalNullRepresentation

Optional Element Summary

boolean	emptyNodeRepresentsNull
boolean	isSetPerformedForAbsentNode
XmlMarshalNullRepresentation	nullRepresentationForXml
boolean	xsiNilRepresentsNull

xsiNilRepresentsNull

public abstract boolean xsiNilRepresentsNull

Default:

false

emptyNodeRepresentsNull

public abstract boolean emptyNodeRepresentsNull

Default:

false

isSetPerformedForAbsentNode

public abstract boolean isSetPerformedForAbsentNode

Default:

true

nullRepresentationForXml

public abstract XmlMarshalNullRepresentation nullRepresentationForXml

Default:

org.eclipse.persistence.oxm.annotations.XmlMarshalNullRepresentation.ABSENT_NODE