public Int32 Compare(SortKey x, SortKey y)
{
#if DEBUG
System.Diagnostics.Debug.WriteLine("Comparing >>>>");
x.Dump();
y.Dump();
#endif
int result = 0;
for (Int32 i = 0; i < x.NumKeyParts; i++)
{
result = ((IComparer)_comparers[i]).Compare(x[i], y[i]);
if (result != 0)
{
break;
}
}
#if DEBUG
System.Diagnostics.Debug.WriteLine("result = " + result.ToString());
System.Diagnostics.Debug.WriteLine("");
#endif
// if after all comparisions, the two sort keys are still equal,
// preserve the doc order
return((result == 0) ? -1 : result);
}
public int Compare(SortKey x, SortKey y)
{
int result = 0;
for (int i = 0; i < x.NumKeys; i++)
{
result = this.comparers[i].Compare(x[i], y[i]);
if (result != 0)
{
return(result);
}
}
Debug.Assert(result == 0);
// if after all comparisions, the two sort keys are still equal,
// preserve the doc order
return(x.OriginalPosition - y.OriginalPosition);
}
private void BuildResultsList()
{
Int32 numSorts = this.comparer.NumSorts;
Debug.Assert(numSorts > 0, "Why was the sort query created?");
XPathNavigator eNext;
while ((eNext = _qyInput.advance()) != null)
{
SortKey key = new SortKey(numSorts, /*originalPosition:*/ this.results.Count, eNext.Clone());
for (Int32 j = 0; j < numSorts; j++)
{
object keyval = this.comparer.Expression(j).getValue(_qyInput);
key[j] = keyval;
}
results.Add(key);
}
results.Sort(this.comparer);
}
private void BuildResultsList()
{
XPathNavigator eNext;
SortKey key;
Int32 numSorts = _sortExpressions.Count;
System.Diagnostics.Debug.Assert(numSorts > 0, "Why was the sort query created?");
while (true)
{
eNext = _qyInput.advance();
if (eNext == null)
{
break;
}
// if this is the first time i.e., the cache is empty
// and if we an xslt context to work with
/* if (_ResultCount == 0 && _context != null)
* for (Int32 i=0; i<numSorts; i++)
* ((IQuery)_sortExpressions[i]).SetXsltContext(_context);*/
// create the special object that represent the composite key
// This key object will act as a container for the primary key value,
// secondary key value etc.
key = new SortKey(numSorts);
for (Int32 j = 0; j < numSorts; j++)
{
object keyval = ((IQuery)_sortExpressions[j]).getValue(_qyInput);
key.SetKeyValue(keyval, j);
}
_Results.Add(key, eNext.Clone());
_ResultCount++;
}
}
