/// <summary>
/// Adds a path to the source and target tree which is obtained by looking at the EntityPropertyMappingAttribute in the <paramref name="epmInfo"/>
/// </summary>
/// <param name="epmInfo">EnitityPropertyMappingInfo holding the source path</param>
internal void Add(EntityPropertyMappingInfo epmInfo)
{
DebugUtils.CheckNoExternalCallers();
List <EpmSourcePathSegment> pathToCurrentSegment = new List <EpmSourcePathSegment>();
EpmSourcePathSegment currentSourceSegment = this.Root;
EpmSourcePathSegment foundSourceSegment = null;
IEdmType currentType = epmInfo.ActualPropertyType;
Debug.Assert(!string.IsNullOrEmpty(epmInfo.Attribute.SourcePath), "Invalid source path");
string[] propertyPath = epmInfo.Attribute.SourcePath.Split('/');
int propertyPathLength = propertyPath.Length;
Debug.Assert(propertyPathLength > 0, "Must have been validated during EntityPropertyMappingAttribute construction");
for (int sourcePropertyIndex = 0; sourcePropertyIndex < propertyPathLength; sourcePropertyIndex++)
{
string propertyName = propertyPath[sourcePropertyIndex];
if (propertyName.Length == 0)
{
throw new ODataException(ODataErrorStrings.EpmSourceTree_InvalidSourcePath(epmInfo.DefiningType.ODataFullName(), epmInfo.Attribute.SourcePath));
}
IEdmTypeReference nextPropertyTypeReference = GetPropertyType(currentType, propertyName);
IEdmType nextPropertyType = nextPropertyTypeReference == null ? null : nextPropertyTypeReference.Definition;
// If we don't find a property type this is an open property; check whether this is the last segment in the path
// since otherwise this would not be an open primitive property and only open primitive properties are allowed.
if (nextPropertyType == null && sourcePropertyIndex < propertyPathLength - 1)
{
throw new ODataException(ODataErrorStrings.EpmSourceTree_OpenComplexPropertyCannotBeMapped(propertyName, currentType.ODataFullName()));
}
currentType = nextPropertyType;
foundSourceSegment = currentSourceSegment.SubProperties.SingleOrDefault(e => e.PropertyName == propertyName);
if (foundSourceSegment != null)
{
currentSourceSegment = foundSourceSegment;
}
else
{
EpmSourcePathSegment newSourceSegment = new EpmSourcePathSegment(propertyName);
currentSourceSegment.SubProperties.Add(newSourceSegment);
currentSourceSegment = newSourceSegment;
}
pathToCurrentSegment.Add(currentSourceSegment);
}
// The last segment is the one being mapped from by the user specified attribute.
// It must be a primitive type - we don't allow mappings of anything else than primitive properties directly.
// Note that we can only verify this for non-open properties, for open properties we must assume it's a primitive type
// and we will make this check later during serialization again when we actually have the value of the property.
if (currentType != null)
{
if (!currentType.IsODataPrimitiveTypeKind())
{
throw new ODataException(ODataErrorStrings.EpmSourceTree_EndsWithNonPrimitiveType(currentSourceSegment.PropertyName));
}
}
Debug.Assert(foundSourceSegment == null || foundSourceSegment.EpmInfo != null, "Can't have a leaf node in the tree without EpmInfo.");
// Two EpmAttributes with same PropertyName in the same type, this could be a result of inheritance
if (foundSourceSegment != null)
{
Debug.Assert(object.ReferenceEquals(foundSourceSegment, currentSourceSegment), "currentSourceSegment variable should have been updated already to foundSourceSegment");
// Check for duplicates on the same entity type
Debug.Assert(foundSourceSegment.SubProperties.Count == 0, "If non-leaf, it means we allowed complex type to be a leaf node");
if (foundSourceSegment.EpmInfo.DefiningTypesAreEqual(epmInfo))
{
throw new ODataException(ODataErrorStrings.EpmSourceTree_DuplicateEpmAttributesWithSameSourceName(epmInfo.DefiningType.ODataFullName(), epmInfo.Attribute.SourcePath));
}
// In case of inheritance, we need to remove the node from target tree which was mapped to base type property
this.epmTargetTree.Remove(foundSourceSegment.EpmInfo);
}
epmInfo.SetPropertyValuePath(pathToCurrentSegment.ToArray());
currentSourceSegment.EpmInfo = epmInfo;
this.epmTargetTree.Add(epmInfo);
}