public bool Create(DbObject item)
{
if (item == null || _table.Contains(item))
{
throw new ArgumentException("Either the table is null or it already exists within database.");
}
_table.Add(item as DbTable);
return(true);
}
public bool Update(DbObject item)
{
if (item == null)
{
return(false);
}
if (Delete(item.Id))
{
Create(item);
return(true);
}
return(false);
}
public bool Update(DbObject item)
{
if (item == null)
{
return(false);
}
int index = _table.IndexOf(Read(item.Id) as DbTable);
if (!(index == -1))
{
_table[index] = item as DbTable;
return(true);
}
return(false);
}
public bool Create(DbObject item)
{
if (item == null || _table.Contains(item))
{
return(false);
}
foreach (DbObject element in _table)
{
if (item.Id == element.Id)
{
return(false);
}
}
_table.Add(item);
return(true);
}