/// <summary>
/// Try and get the mapped type for the given primitiveTypeKind in the given dataspace
/// </summary>
/// <param name="primitiveTypeKind"> The primitive type kind of the primitive type to retrieve </param>
/// <param name="facets"> The facets to use in picking the primitive type </param>
/// <param name="type"> The resulting type </param>
/// <returns> Whether a type was retrieved or not </returns>
internal bool TryGetType(PrimitiveTypeKind primitiveTypeKind, IEnumerable <Facet> facets, out PrimitiveType type)
{
type = null;
// Now, see if we have any types for this model type, if so, loop through to find the best matching one
var primitiveTypes = EntityUtil.CheckArgumentOutOfRange(_primitiveTypeMap, (int)primitiveTypeKind, "primitiveTypeKind");
if ((null != primitiveTypes) &&
(0 < primitiveTypes.Count))
{
if (primitiveTypes.Count == 1)
{
type = primitiveTypes[0];
return(true);
}
if (facets == null)
{
var facetDescriptions = EdmProviderManifest.GetInitialFacetDescriptions(primitiveTypeKind);
if (facetDescriptions == null)
{
type = primitiveTypes[0];
return(true);
}
Debug.Assert(facetDescriptions.Length > 0);
facets = CreateInitialFacets(facetDescriptions);
}
Debug.Assert(type == null, "type must be null here");
var isMaxLengthSentinel = false;
// Create a dictionary of facets for easy lookup
foreach (var facet in facets)
{
if ((primitiveTypeKind == PrimitiveTypeKind.String ||
primitiveTypeKind == PrimitiveTypeKind.Binary)
&&
facet.Value != null
&&
facet.Name == DbProviderManifest.MaxLengthFacetName
&&
Helper.IsUnboundedFacetValue(facet))
{
// MaxLength has the sentinel value. So this facet need not be added.
isMaxLengthSentinel = true;
continue;
}
}
var maxLength = 0;
// Find a primitive type with the matching constraint
foreach (var primitiveType in primitiveTypes)
{
if (isMaxLengthSentinel)
{
if (type == null)
{
type = primitiveType;
maxLength =
Helper.GetFacet(primitiveType.FacetDescriptions, DbProviderManifest.MaxLengthFacetName).MaxValue.Value;
}
else
{
var newMaxLength =
Helper.GetFacet(primitiveType.FacetDescriptions, DbProviderManifest.MaxLengthFacetName).MaxValue.Value;
if (newMaxLength > maxLength)
{
type = primitiveType;
maxLength = newMaxLength;
}
}
}
else
{
type = primitiveType;
break;
}
}
Debug.Assert(type != null);
return(true);
}
return(false);
}
