internal override void Validate()
{
base.Validate();
ValidationHelper.ValidateTypeDeclaration(this, _type, _typeSubElement);
ValidationHelper.ValidateFacets(this, _type, _typeUsageBuilder);
if (_isRefType)
{
ValidationHelper.ValidateRefType(this, _type);
}
if (Schema.DataModel
!= SchemaDataModelOption.EntityDataModel)
{
Debug.Assert(
Schema.DataModel == SchemaDataModelOption.ProviderDataModel ||
Schema.DataModel == SchemaDataModelOption.ProviderManifestModel, "Unexpected data model");
if (Schema.DataModel
== SchemaDataModelOption.ProviderManifestModel)
{
// Only scalar return type is allowed for functions in provider manifest.
if (_type != null && (_type is ScalarType == false || _collectionKind != CollectionKind.None)
||
_typeSubElement != null && _typeSubElement.Type is ScalarType == false)
{
var typeName = "";
if (_type != null)
{
typeName = Function.GetTypeNameForErrorMessage(_type, _collectionKind, _isRefType);
}
else if (_typeSubElement != null)
{
typeName = _typeSubElement.FQName;
}
AddError(
ErrorCode.FunctionWithNonEdmTypeNotSupported,
EdmSchemaErrorSeverity.Error,
this,
Strings.FunctionWithNonEdmPrimitiveTypeNotSupported(typeName, ParentElement.FQName));
}
}
else // SchemaDataModelOption.ProviderDataModel
{
Debug.Assert(Schema.DataModel == SchemaDataModelOption.ProviderDataModel, "Unexpected data model");
// In SSDL, function may only return a primitive type or a collection of rows.
if (_type != null)
{
// It is not possible to define a collection of rows via a type attribute, hence any collection is not allowed.
if (_type is ScalarType == false ||
_collectionKind != CollectionKind.None)
{
AddError(
ErrorCode.FunctionWithNonPrimitiveTypeNotSupported,
EdmSchemaErrorSeverity.Error,
this,
Strings.FunctionWithNonPrimitiveTypeNotSupported(
_isRefType ? _unresolvedType : _type.FQName, ParentElement.FQName));
}
}
else if (_typeSubElement != null)
{
if (_typeSubElement.Type is ScalarType == false)
{
if (Schema.SchemaVersion
< XmlConstants.StoreVersionForV3)
{
// Before V3 provider model functions only supported scalar return types.
AddError(
ErrorCode.FunctionWithNonPrimitiveTypeNotSupported,
EdmSchemaErrorSeverity.Error,
this,
Strings.FunctionWithNonPrimitiveTypeNotSupported(_typeSubElement.FQName, ParentElement.FQName));
}
else
{
// Starting from V3, TVFs must return collection of rows and row props can be only primitive types.
// The "collection of rows" is the only option in SSDL function ReturnType subelement thus it's enforced on the XSD level,
// so we can assume it here. The only thing we need to check is the type of the row properties.
var collection = _typeSubElement as CollectionTypeElement;
Debug.Assert(collection != null, "Can't find <CollectionType> inside TVF <ReturnType> element");
if (collection != null)
{
var row = collection.SubElement as RowTypeElement;
Debug.Assert(row != null, "Can't find <RowType> inside TVF <ReturnType><CollectionType> element");
if (row != null)
{
if (row.Properties.Any(p => !p.ValidateIsScalar()))
{
AddError(
ErrorCode.TVFReturnTypeRowHasNonScalarProperty,
EdmSchemaErrorSeverity.Error,
this,
Strings.TVFReturnTypeRowHasNonScalarProperty);
}
}
}
}
}
// else type is ScalarType which is supported in all version
}
}
}
if (_typeSubElement != null)
{
_typeSubElement.Validate();
}
}