public DbContainer(List <DbObject <T> > dbObjects
, DataContext tableContext, DataGateORM orm)
{
_dbObjects = dbObjects;
TableContext = tableContext;
_orm = orm;
}
//TODO: Entity caching
public IEnumerable<DbObject<T>> ToDbObjects<T>(DataContext dataContext, DataGateORM orm)
{
foreach (var row in dataContext)
{
var obj = Activator.CreateInstance(EntityType);
foreach (var variable in _variables)
{
var memberInfo = variable.MemberInfo;
var dbIdentifier = GetDbIdentifier(memberInfo);
var value = row.Value[dbIdentifier].Value;
//TODO: resolve Nullable type
try
{
object parsedValue = Convert.ChangeType(value, variable.VariableType);
variable[obj] = parsedValue;
}
catch
{
//ignore
}
}
var dbObj = new DbObject<T>((T) obj, row.Value, (int) (row.Value["datagate_id"]?.Value ?? -1), orm);
yield return dbObj;
}
}
public DbObject(T value, DataContext rowContext
, int dataGateId, DataGateORM orm)
{
Value = value;
RowContext = rowContext;
DataGateId = dataGateId;
_orm = orm;
}
public QueryBuilder(DataGateORM orm)
{
if (!DataGateORM.ConnectionContext.Registry.Contains <TOut>())
{
throw new Exception($"Type '{typeof(TOut)}' is not registered in ORM");
}
_orm = orm;
_fromParams = new HashSet <Type>();
_fromParams.Add(typeof(TIn));
_offset = null;
_limit = null;
_orderByExpressions = new List <Tuple <Expression, OrderByType> >();
_joinExpressions = new List <Tuple <Expression, Type> >();
}
