private IBusinessObject GetPropertyValue(
IBusinessObject currentObject,
IBusinessObjectReferenceProperty currentProperty,
BusinessObjectPropertyPath.ListValueBehavior listValueBehavior,
int propertyIndex)
{
if (currentProperty.IsList)
{
if (listValueBehavior == BusinessObjectPropertyPath.ListValueBehavior.FailForListProperties)
{
throw new InvalidOperationException(
string.Format("Property #{0} of property path '{1}' is not a single-value property.", propertyIndex, Identifier));
}
var list = (IList)currentObject.GetProperty(currentProperty);
if (list.Count > 0)
{
return((IBusinessObject)list[0]);
}
else
{
return(null);
}
}
else
{
return((IBusinessObject)currentObject.GetProperty(currentProperty));
}
}
public IBusinessObjectPropertyPathResult GetResult(
IBusinessObject root,
BusinessObjectPropertyPath.UnreachableValueBehavior unreachableValueBehavior,
BusinessObjectPropertyPath.ListValueBehavior listValueBehavior)
{
return(new NullBusinessObjectPropertyPathResult());
}
public IBusinessObjectPropertyPathResult GetResult(
IBusinessObject root,
BusinessObjectPropertyPath.UnreachableValueBehavior unreachableValueBehavior,
BusinessObjectPropertyPath.ListValueBehavior listValueBehavior)
{
ArgumentUtility.CheckNotNull("root", root);
var propertyEnumerator = GetResultPropertyEnumerator();
var currentObject = root;
int propertyIndex = 0;
while (propertyEnumerator.MoveNext(currentObject.BusinessObjectClass))
{
var currentProperty = propertyEnumerator.Current;
if (currentProperty == null)
{
return(new NullBusinessObjectPropertyPathResult());
}
if (!propertyEnumerator.HasNext)
{
return(new EvaluatedBusinessObjectPropertyPathResult(currentObject, currentProperty));
}
if (!currentProperty.IsAccessible(currentObject))
{
HandlePropertyAccessDenied(unreachableValueBehavior, propertyIndex);
return(new NotAccessibleBusinessObjectPropertyPathResult(currentObject.BusinessObjectClass.BusinessObjectProvider));
}
try
{
currentObject = GetPropertyValue(currentObject, (IBusinessObjectReferenceProperty)currentProperty, listValueBehavior, propertyIndex);
}
catch (BusinessObjectPropertyAccessException)
{
HandlePropertyAccessDenied(unreachableValueBehavior, propertyIndex);
return(new NotAccessibleBusinessObjectPropertyPathResult(currentObject.BusinessObjectClass.BusinessObjectProvider));
}
if (currentObject == null)
{
HandlePropertyValueNull(unreachableValueBehavior, propertyIndex);
return(new NullBusinessObjectPropertyPathResult());
}
propertyIndex++;
}
throw new InvalidOperationException("Property path enumeration can never fall through.");
}
