protected T GetAttribute <T>(Type type, MemberInfo memberInfo) where T : Attribute
{
var attribute = Types.GetOrAdd((type, memberInfo), t =>
{
var tableExpr = Expressions.GetOrAdd(type, entityType => _migrationManager.GetCreateTableExpression(entityType));
if (typeof(T) == typeof(TableAttribute))
{
return new TableAttribute(tableExpr.TableName)
{
Schema = tableExpr.SchemaName
}
}
;
if (typeof(T) != typeof(ColumnAttribute))
{
return(null);
}
var column = tableExpr.Columns.SingleOrDefault(cd => cd.Name.Equals(NameCompatibilityManager.GetColumnName(type, memberInfo.Name), StringComparison.OrdinalIgnoreCase));
if (column is null)
{
return(null);
}
var columnSystemType = (memberInfo as PropertyInfo)?.PropertyType ?? typeof(string);
return(new ColumnAttribute
{
Name = column.Name,
IsPrimaryKey = column.IsPrimaryKey,
IsColumn = true,
CanBeNull = column.IsNullable ?? false,
Length = column.Size ?? 0,
Precision = column.Precision ?? 0,
IsIdentity = column.IsIdentity,
DataType = SqlDataType.GetDataType(columnSystemType).Type.DataType
});
});
return((T)attribute);
}
protected T GetAttribute <T>(Type type, MemberInfo memberInfo) where T : Attribute
{
var attribute = Types.GetOrAdd((type, memberInfo), _ =>
{
var entityDescriptor = _mappingEntityAccessor.GetEntityDescriptor(type);
if (typeof(T) == typeof(TableAttribute))
{
return(new TableAttribute(entityDescriptor.EntityName));
}
if (typeof(T) != typeof(ColumnAttribute))
{
return(null);
}
var entityField = entityDescriptor.Fields.SingleOrDefault(cd => cd.Name.Equals(NameCompatibilityManager.GetColumnName(type, memberInfo.Name), StringComparison.OrdinalIgnoreCase));
if (entityField is null)
{
return(null);
}
var columnSystemType = (memberInfo as PropertyInfo)?.PropertyType ?? typeof(string);
return(new ColumnAttribute
{
Name = entityField.Name,
IsPrimaryKey = entityField.IsPrimaryKey,
IsColumn = true,
CanBeNull = entityField.IsNullable ?? false,
Length = entityField.Size ?? 0,
Precision = entityField.Precision ?? 0,
IsIdentity = entityField.IsIdentity,
DataType = SqlDataType.GetDataType(columnSystemType).Type.DataType
});
});
return((T)attribute);
}