/// <summary>
/// Gets the reader behavior for null property value on the specified property.
/// </summary>
/// <param name="model">The model containing the annotation.</param>
/// <param name="property">The property to check.</param>
/// <returns>The behavior to use when reading null value for this property.</returns>
public static ODataNullValueBehaviorKind NullValueReadBehaviorKind(this IEdmModel model, IEdmProperty property)
{
ExceptionUtils.CheckArgumentNotNull(model, "model");
ExceptionUtils.CheckArgumentNotNull(property, "property");
ODataEdmPropertyAnnotation annotation = model.GetAnnotationValue <ODataEdmPropertyAnnotation>(property);
return(annotation == null ? ODataNullValueBehaviorKind.Default : annotation.NullValueReadBehaviorKind);
}
public static ODataNullValueBehaviorKind NullValueReadBehaviorKind(this IEdmModel model, IEdmProperty property)
{
ExceptionUtils.CheckArgumentNotNull <IEdmModel>(model, "model");
ExceptionUtils.CheckArgumentNotNull <IEdmProperty>(property, "property");
ODataEdmPropertyAnnotation annotationValue = model.GetAnnotationValue <ODataEdmPropertyAnnotation>(property);
if (annotationValue != null)
{
return(annotationValue.NullValueReadBehaviorKind);
}
return(ODataNullValueBehaviorKind.Default);
}
public static void SetNullValueReaderBehavior(this IEdmModel model, IEdmProperty property, ODataNullValueBehaviorKind nullValueReadBehaviorKind)
{
ExceptionUtils.CheckArgumentNotNull <IEdmModel>(model, "model");
ExceptionUtils.CheckArgumentNotNull <IEdmProperty>(property, "property");
ODataEdmPropertyAnnotation annotationValue = model.GetAnnotationValue <ODataEdmPropertyAnnotation>(property);
if (annotationValue == null)
{
if (nullValueReadBehaviorKind != ODataNullValueBehaviorKind.Default)
{
annotationValue = new ODataEdmPropertyAnnotation {
NullValueReadBehaviorKind = nullValueReadBehaviorKind
};
model.SetAnnotationValue <ODataEdmPropertyAnnotation>(property, annotationValue);
}
}
else
{
annotationValue.NullValueReadBehaviorKind = nullValueReadBehaviorKind;
}
}