public override NpgsqlArrayTypeMapping FlipArrayListClrType(Type newType)
{
var elementType = ClrType.GetGenericArguments()[0];
if (newType.IsGenericList())
{
var newTypeElement = newType.GetGenericArguments()[0];
return(newTypeElement == elementType
? this
: throw new ArgumentException(
$"Mismatch in list element CLR types when converting a type mapping: {newTypeElement.Name} and {elementType.Name}"));
}
if (newType.IsArray)
{
var arrayElementType = newType.GetElementType() !;
return(arrayElementType == elementType
? new NpgsqlArrayArrayTypeMapping(newType, ElementMapping)
: throw new ArgumentException(
"Mismatch in list element CLR types when converting a type mapping: " +
$"{arrayElementType} and {elementType.Name}"));
}
throw new ArgumentException($"Non-array/list type: {newType.Name}");
}
/// <summary>
/// Prints the data convert method.
/// </summary>
/// <param name="methodPrefix">The method prefix.</param>
/// <param name="entity">The entity.</param>
/// <returns></returns>
public string PrintDataConvertMethod(string methodPrefix, EntityMap entity)
{
string tstring;
if (IsComplexType && (entity.Parent != null))
{
var complexT = entity.Parent.ComplexTypes[ComplexTypeName];
if ((complexT != null) && complexT.IsEnum)
{
return(string.Format("ReadEnum<{0}>", complexT.FullName));
}
}
if (ClrType.IsGenericType && ClrType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
var args = ClrType.GetGenericArguments();
tstring = ToPrintString(args[0], false);
methodPrefix += "Nullable";
}
else
{
tstring = ToPrintString(ClrType);
}
return(string.Format("{0}{1}", methodPrefix, Goliath.Data.Utils.Inflector.Pascalize(tstring)));
}
internal override IEnumerable <Type> GetChildTypes()
{
// Collect information...
Debug.Assert(
ClrType.IsGenericType() &&
typeof(IGrouping <,>).Equals(ClrType.GetGenericTypeDefinition()));
var keyType = ClrType.GetGenericArguments()[0];
var groupElementType = ClrType.GetGenericArguments()[1];
// key
yield return(keyType);
// group
yield return(typeof(IEnumerable <>).MakeGenericType(groupElementType));
}
internal override Expression Emit(List <TranslatorResult> propertyTranslatorResults)
{
// Create expression of the form:
// new Grouping<K, T>(children[0], children[1])
// Collect information...
Debug.Assert(
ClrType.IsGenericType() &&
typeof(IGrouping <,>).Equals(ClrType.GetGenericTypeDefinition()));
Debug.Assert(propertyTranslatorResults.Count == 2);
var keyType = ClrType.GetGenericArguments()[0];
var groupElementType = ClrType.GetGenericArguments()[1];
var groupType = typeof(Grouping <,>).MakeGenericType(keyType, groupElementType);
var constructor = groupType.GetConstructors().Single();
// new Grouping<K, T>(children[0], children[1])
Expression newGrouping = Expression.Convert(
Expression.New(constructor, GetPropertyReaders(propertyTranslatorResults)), ClrType);
return(newGrouping);
}