public (DataPage <TPrimaryKey, TRow> NewValue, TRow PreviousValue) Update(TRow newValue)
{
var key = _keySelector(newValue);
if (!_map.TryGet(key, out var page))
{
throw new Exception($"Failed to row to update at key: '{key}'");
}
var previous = page.Value.Row;
page.Value.Update(newValue);
return(page.Value, previous);
}
public void Remove(TIndexKey key, TPrimaryKey primaryKey)
{
if (!_map.TryGet(key, out var group))
{
throw new Exception($"Unable to find group at key: '{key}'");
}
if (!group.Value.Remove(DataPage <TPrimaryKey, TRow> .SurrogateForKey(primaryKey), out _))
{
throw new Exception($"Attempted to remove non-existent row with primary key: '{primaryKey}' from group at key '{key}'");
}
_map.Remove(key, out _);
}
