private static string ResolveByDataType(object value, PostgresDataType dataType)
{
switch (dataType)
{
case PostgresDataType.UUID:
return(_converters[typeof(Guid)](value));
case PostgresDataType.TEXT:
return(_converters[typeof(string)](value));
case PostgresDataType.INT:
case PostgresDataType.FLOAT8:
return(_converters[typeof(int)](value));
case PostgresDataType.DATE:
return($"'{((DateTimeOffset)value).ToUniversalTime().ToString("yyyy-MM-dd")}'");
case PostgresDataType.TIMESTAMPTZ:
return(_converters[typeof(DateTimeOffset)](value));
case PostgresDataType.BOOLEAN:
return(_converters[typeof(bool)](value));
default:
throw new ArgumentOutOfRangeException($"'{dataType}' is not a valid postgres data type.");
}
}
private static object ResolveValue(object value,
Type propertyType, PostgresDataType dataType)
{
object converted = value;
switch (dataType)
{
case PostgresDataType.TEXT:
if (propertyType.IsEnum)
{
converted = Enum.Parse(propertyType, (string)value);
}
break;
case PostgresDataType.DATE:
case PostgresDataType.TIMESTAMPTZ:
DateTime dt = (DateTime)value;
dt = DateTime.SpecifyKind(dt, DateTimeKind.Utc);
DateTimeOffset dtOffset = dt;
converted = dtOffset;
break;
case PostgresDataType.UUID:
case PostgresDataType.INT:
case PostgresDataType.FLOAT8:
case PostgresDataType.SQL_IDENTIFIER:
break;
default:
throw new ArgumentOutOfRangeException(nameof(dataType), $"'{dataType}' is an invalid '{nameof(PostgresDataType)}'.");
}
return(converted);
}
public override Task CreateDatabaseAsync(Assembly assemblyOfModels)
{
return(DbConnection.CreateDatabase(assemblyOfModels,
PostgresDataType.Init()
.SetarRelationDataTypes()
.ObterRelationDataTypes(),
new PostgresDatabase()));
}
internal static object Map(object value,
Type propertyType, PostgresDataType dataType)
{
if (propertyType.IsNullable())
{
return(ResolveValueForNullable(value, propertyType, dataType));
}
return(ResolveValue(value, propertyType, dataType));
}
private static void SetNameDataType(TableColumn column, ColumnAttribute attr)
{
string name = attr != null && !string.IsNullOrWhiteSpace(attr.Name)
? attr.Name
: column.PropertyType.Name;
PostgresDataType dataType = attr != null && attr.DataType.HasValue
? attr.DataType.Value
: ToPostgresDataTypeMapper.Map(column.PropertyType);
column.Name = name;
column.DataType = dataType;
}
private static object ResolveValueForNullable(object value,
Type propertyType, PostgresDataType dataType)
{
if (value == null || value.GetType() == typeof(DBNull))
{
return(null);
}
if (propertyType.IsNullableEnum())
{
Type nullableType = Nullable.GetUnderlyingType(propertyType);
return(Enum.Parse(nullableType, (string)value));
}
return(ResolveValue(value, propertyType, dataType));
}
internal static string Map(object value, PostgresDataType dataType)
{
if (value == null)
{
return("null");
}
switch (dataType)
{
case PostgresDataType.UUID:
case PostgresDataType.SQL_IDENTIFIER:
return(_converters[typeof(Guid)](value));
case PostgresDataType.TEXT:
return(_converters[typeof(string)](value));
case PostgresDataType.INT:
case PostgresDataType.FLOAT8:
return(_converters[typeof(int)](value));
case PostgresDataType.DATE:
return($"'{((DateTimeOffset)value).ToUniversalTime().ToString("yyyy-MM-dd")}'");
case PostgresDataType.TIMESTAMPTZ:
return(_converters[typeof(DateTimeOffset)](value));
case PostgresDataType.BOOLEAN:
return(_converters[typeof(bool)](value));
default:
throw new ArgumentOutOfRangeException($"'{dataType}' is not a valid postgres data type.");
}
//if (column.DataType.HasValue)
//{
// return ResolveByDataType(value, column.DataType.Value);
//}
//return ResolveByPropertyType(value, column);
}
public static Func <NpgsqlDataReader, List <TResult> > Create <TResult>(Type propertyType, PostgresDataType dataType)
{
return(reader =>
{
var result = new List <object>();
while (reader.Read())
{
Debug.Assert(reader.FieldCount == 1, "Union queries only support selecting a single column.");
object value = reader.GetValue(0);
object resolvedValue = DbValueToObjectMapper.Map(value, propertyType, dataType);
result.Add(resolvedValue);
}
return result.Cast <TResult>().ToList();
});
}
public ColumnAttribute(string name, PostgresDataType dataType)
{
Name = name;
DataType = dataType;
}
