/// <summary>
/// This method takes a type and a set of facets and returns the best mapped equivalent type
/// in EDM.
/// </summary>
/// <param name="storeType">A TypeUsage encapsulating a store type and a set of facets</param>
/// <returns>A TypeUsage encapsulating an EDM type and a set of facets</returns>
public override TypeUsage GetEdmType(TypeUsage storeType)
{
if (storeType == null)
{
throw new ArgumentNullException("storeType");
}
var storeTypeName = storeType.EdmType.Name.ToLowerInvariant();
if (!StoreTypeNameToEdmPrimitiveType.ContainsKey(storeTypeName))
{
throw new ArgumentException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
var edmPrimitiveType = base.StoreTypeNameToEdmPrimitiveType[storeTypeName];
var maxLength = 0;
var isUnicode = true;
var isFixedLen = false;
var isUnbounded = true;
PrimitiveTypeKind newPrimitiveTypeKind;
switch (storeTypeName)
{
// for some types we just go with simple type usage with no facets
case "smallint":
case "int":
case "bigint":
case "smallint_bool":
case "float":
case "double":
case "guid":
return(TypeUsage.CreateDefaultTypeUsage(edmPrimitiveType));
case "decimal":
case "numeric":
if (TypeHelpers.TryGetPrecision(storeType, out var precision) && TypeHelpers.TryGetScale(storeType, out var scale))
{
return(TypeUsage.CreateDecimalTypeUsage(edmPrimitiveType, precision, scale));
}
else
{
return(TypeUsage.CreateDecimalTypeUsage(edmPrimitiveType));
}
case "varchar":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = !TypeHelpers.TryGetMaxLength(storeType, out maxLength);
isUnicode = true; //hardcoded
isFixedLen = false;
break;
case "char":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = !TypeHelpers.TryGetMaxLength(storeType, out maxLength);
isUnicode = true; //hardcoded
isFixedLen = true;
break;
case "timestamp":
return(TypeUsage.CreateDateTimeTypeUsage(edmPrimitiveType, null));
case "date":
return(TypeUsage.CreateDateTimeTypeUsage(edmPrimitiveType, null));
case "time":
return(TypeUsage.CreateTimeTypeUsage(edmPrimitiveType, null));
case "blob":
newPrimitiveTypeKind = PrimitiveTypeKind.Binary;
isUnbounded = true;
isFixedLen = false;
break;
case "clob":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = true;
isUnicode = true; //hardcoded
isFixedLen = false;
break;
default:
throw new NotSupportedException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
Debug.Assert(newPrimitiveTypeKind == PrimitiveTypeKind.String || newPrimitiveTypeKind == PrimitiveTypeKind.Binary, "at this point only string and binary types should be present");
switch (newPrimitiveTypeKind)
{
case PrimitiveTypeKind.String:
if (!isUnbounded)
{
return(TypeUsage.CreateStringTypeUsage(edmPrimitiveType, isUnicode, isFixedLen, maxLength));
}
else
{
return(TypeUsage.CreateStringTypeUsage(edmPrimitiveType, isUnicode, isFixedLen));
}
case PrimitiveTypeKind.Binary:
if (!isUnbounded)
{
return(TypeUsage.CreateBinaryTypeUsage(edmPrimitiveType, isFixedLen, maxLength));
}
else
{
return(TypeUsage.CreateBinaryTypeUsage(edmPrimitiveType, isFixedLen));
}
default:
throw new NotSupportedException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
}
public override TypeUsage GetEdmType(TypeUsage storeType)
{
ArgumentUtility.CheckNotNull("storeType", storeType);
var storeTypeName = storeType.EdmType.Name.ToLowerInvariant();
if (!StoreTypeNameToEdmPrimitiveType.ContainsKey(storeTypeName))
{
throw new ArgumentException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
var primitiveType = StoreTypeNameToEdmPrimitiveType[storeTypeName];
var maxLength = 0;
var isFixedLen = false;
var isUnbounded = true;
PrimitiveTypeKind newPrimitiveTypeKind;
switch (storeTypeName)
{
case "logical":
case "int":
case "integer":
case "float":
case "double":
return(TypeUsage.CreateDefaultTypeUsage(primitiveType));
case "date":
case "datetime":
return(TypeUsage.CreateDateTimeTypeUsage(primitiveType, null));
case "numeric":
byte precision;
byte scale;
if (storeType.TryGetPrecision(out precision) && storeType.TryGetScale(out scale))
{
return(TypeUsage.CreateDecimalTypeUsage(primitiveType, precision, scale));
}
return(TypeUsage.CreateDecimalTypeUsage(primitiveType));
case "currency":
return(TypeUsage.CreateDecimalTypeUsage(primitiveType, 19, 4));
case "varchar":
case "binaryvarchar":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = !storeType.TryGetMaxLength(out maxLength);
isFixedLen = false;
break;
case "character":
case "char":
case "binarychar":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = !storeType.TryGetMaxLength(out maxLength);
isFixedLen = true;
break;
case "guid":
newPrimitiveTypeKind = PrimitiveTypeKind.Guid;
isUnbounded = false;
isFixedLen = true;
break;
case "memo":
case "binarymemo":
newPrimitiveTypeKind = PrimitiveTypeKind.String;
isUnbounded = true;
isFixedLen = false;
break;
case "blob":
case "general":
newPrimitiveTypeKind = PrimitiveTypeKind.Binary;
isUnbounded = true;
isFixedLen = false;
break;
default:
throw new NotSupportedException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
switch (newPrimitiveTypeKind)
{
case PrimitiveTypeKind.String:
if (!isUnbounded)
{
return(TypeUsage.CreateStringTypeUsage(primitiveType, false, isFixedLen, maxLength));
}
return(TypeUsage.CreateStringTypeUsage(primitiveType, false, isFixedLen));
case PrimitiveTypeKind.Binary:
if (!isUnbounded)
{
return(TypeUsage.CreateBinaryTypeUsage(primitiveType, false, maxLength));
}
return(TypeUsage.CreateBinaryTypeUsage(primitiveType, isFixedLen));
case PrimitiveTypeKind.Guid:
return(TypeUsage.CreateDefaultTypeUsage(primitiveType));
default:
throw new NotSupportedException(string.Format("The underlying provider does not support the type '{0}'.", storeTypeName));
}
}
