public override object Execute(IContextProvider provider, object[] args, MemoryPool pool)
{
XQueryNodeIterator res = (XQueryNodeIterator)pool.GetData(_cache);
if (res != null)
return res.Clone();
#if PF
PerfMonitor.Global.Begin(this);
#endif
XQueryNodeIterator rootIter =
XQueryNodeIterator.Create(_path[0].Execute(provider, args, pool)).CreateBufferedIterator();
bool orderedSet = _isOrderedSet && rootIter.IsSingleIterator;
res = new ResultIterator(this, provider, orderedSet, !orderedSet & QueryContext.EnableHPC, rootIter, args, pool);
if (EnableCaching)
{
res = res.CreateBufferedIterator();
pool.SetData(_cache, res.Clone());
}
#if PF
PerfMonitor.Global.End(this);
#endif
return res;
}