private IEnumerable <ParadoxRecord> Enumerate(ParadoxCondition condition, ushort blockId, int indexLevel)
{
if (indexLevel == 0)
{
var block = this.table.GetBlock(blockId);
for (int i = 0; i < block.RecordCount; i++)
{
var rec = block[i];
if (condition.IsDataOk(rec))
{
yield return(rec);
}
}
}
else
{
var block = this.GetBlock(blockId);
var blockIdFldIndex = this.FieldCount - 3;
for (int i = 0; i < block.RecordCount; i++)
{
var rec = block[i];
if (condition.IsIndexPossible(rec, i < block.RecordCount - 1 ? block[i + 1] : null))
{
var qry = Enumerate(condition, (ushort)((short)rec.DataValues[blockIdFldIndex] - 1), indexLevel - 1);
foreach (var dataRec in qry)
{
yield return(dataRec);
}
}
}
}
}
public IEnumerable <ParadoxRecord> Enumerate(ParadoxCondition condition)
{
return(Enumerate(condition, (ushort)(this.pxRootBlockId - 1), this.pxLevelCount));
}