internal static bool TryGetPrecision(TypeUsage type, out byte precision)
{
if (!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Decimal))
{
precision = 0;
return(false);
}
return(TryGetByteFacetValue(type, ProviderManifest.PrecisionFacetName, out precision));
}
internal static bool TryGetScale(TypeUsage type, out byte scale)
{
if (!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Decimal))
{
scale = 0;
return(false);
}
return(TryGetByteFacetValue(type, ProviderManifest.ScaleFacetName, out scale));
}
internal static bool TryGetIsUnicode(TypeUsage type, out bool isUnicode)
{
isUnicode = true;
if (!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.String))
{
isUnicode = false;
return(false);
}
return(true);
}
internal static bool TryGetMaxLength(TypeUsage type, out int maxLength)
{
if (!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.String)
&&
!TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Binary))
{
maxLength = 0;
return(false);
}
// Binary and String FixedLength facets share the same name
return(TryGetIntFacetValue(type, ProviderManifest.MaxLengthFacetName, out maxLength));
}
internal static void PopulateParameterFromTypeUsage(DbParameter parameter, TypeUsage type)
{
Check.NotNull(parameter, "parameter");
Check.NotNull(type, "type");
// parameter.Direction - take the default. we don't support output
// parameters.
parameter.Direction = ParameterDirection.Input;
// parameter.IsNullable - from the NullableConstraintAttribute value
parameter.IsNullable = TypeSemantics.IsNullable(type);
// parameter.ParameterName - set by the caller;
// parameter.SourceColumn - not applicable until we have a data adapter;
// parameter.SourceColumnNullMapping - not applicable until we have a data adapter;
// parameter.SourceVersion - not applicable until we have a data adapter;
// parameter.Value - left unset;
// parameter.DbType - determined by the TypeMapping;
// parameter.Precision - from the TypeMapping;
// parameter.Scale - from the TypeMapping;
// parameter.Size - from the TypeMapping;
Debug.Assert(null != type, "no type mapping?");
if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Binary))
{
PopulateBinaryParameter(parameter, type, DbType.Binary);
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Boolean))
{
parameter.DbType = DbType.Boolean;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Byte))
{
parameter.DbType = DbType.Byte;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.DateTime))
{
parameter.DbType = DbType.DateTime;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Decimal))
{
PopulateDecimalParameter(parameter, type, DbType.Decimal);
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Double))
{
parameter.DbType = DbType.Double;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Guid))
{
parameter.DbType = DbType.Guid;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Single))
{
parameter.DbType = DbType.Single;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Int16))
{
parameter.DbType = DbType.Int16;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Int32))
{
parameter.DbType = DbType.Int32;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Int64))
{
parameter.DbType = DbType.Int64;
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.String))
{
PopulateStringParameter(parameter, type);
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.Time))
{
throw ADP1.NotSupported(EntityRes.GetString(EntityRes.ProviderDoesNotSupportType, "Time"));
}
else if (TypeSemantics.IsPrimitiveType(type, PrimitiveTypeKind.DateTimeOffset))
{
throw ADP1.NotSupported(EntityRes.GetString(EntityRes.ProviderDoesNotSupportType, "DateTimeOffset"));
}
else
{
ADP1.NotSupported(" UnKnown data type");
}
}