internal SortQuery(SortQuery originalQuery) {
this._qyInput = originalQuery._qyInput.Clone();
int count = originalQuery._sortExpressions.Count;
this._sortExpressions = new ArrayList(count);
for (int i=0; i < count; i++) {
IQuery query = originalQuery._sortExpressions[i] as IQuery;
query = query.Clone();
this._sortExpressions.Add(query);
}
this._comparers = new ArrayList(originalQuery._comparers);
this._Results = new SortedList(new XPathComparer(_comparers));
// SetXsltContext(_context);
}
public override void AddSort(object expr, IComparer comparer) {
// sort makes sense only when we are dealing with a query that
// returns a nodeset.
IQuery evalExpr;
_allowSort = true;
if (expr is String) {
evalExpr = _builder.Build((String)expr, out _hasUnresolvedPrefix); // this will throw if expr is invalid
}
else if (expr is CompiledXpathExpr) {
evalExpr = ((CompiledXpathExpr)expr).QueryTree;
}
else {
throw new XPathException(Res.Xp_BadQueryObject);
}
if (_sortQuery == null) {
_sortQuery = new SortQuery(_compiledQuery);
_compiledQuery = _sortQuery;
}
_sortQuery.AddSort(evalExpr, comparer);
}