static void Add(this DBColum colum, long time, object newvalue, out Exception exp)
{
exp = null;
try
{
if (!CoreResolver.CanUse(colum, newvalue))
{
throw new WrongParameterCodeType("{0} type isn't acceptable in colum {1}.", CoreResolver.ReturnType(newvalue.GetType()).ToString(), colum.Name);
}
if (CoreResolver.UniqueDBKey(colum))
{
if (colum.Values.Contains(newvalue))
{
throw new DuplicatedUniqueValue("{0} unique value {1} existed already.", colum.Name, newvalue);
}
}
colum.Records.Add(DBColumOrderRecord.Create(DBColumOrderRecordType.Add, time, colum, newvalue));
colum.UpdatedValue = newvalue;
colum.Values.Add(newvalue);
}
catch (Exception e)
{
exp = e;
}
}
static object Get(this DBColum colum, long time, int index)
{
if (colum.Values.Count < index)
{
return(null);
}
colum.Records.Add(DBColumOrderRecord.Create(DBColumOrderRecordType.Get, time, colum.Name, colum.Values[index], colum.DefaultValue));
return(colum.Values[index]);
}