mcs/class/referencesource/System.Xml/System/Xml/XPath/Internal/GroupQuery.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="GroupQuery.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 //------------------------------------------------------------------------------
   7
   8 namespace MS.Internal.Xml.XPath {
   9     using System;
  10     using System.Xml;
  11     using System.Xml.XPath;
  12     using System.Diagnostics;
  13     using System.Globalization;
  14
  15     internal sealed class GroupQuery : BaseAxisQuery {
  16
  17         public GroupQuery(Query qy): base(qy) {}
  18         private GroupQuery(GroupQuery other) : base(other) { }
  19
  20         public override XPathNavigator Advance() {
  21             currentNode = qyInput.Advance();
  22             if (currentNode != null) {
  23                 position++;
  24             }
  25             return currentNode;
  26         }
  27
  28         public override object Evaluate(XPathNodeIterator nodeIterator) {
  29             return qyInput.Evaluate(nodeIterator);
  30         }
  31
  32         public override XPathNodeIterator Clone() { return new GroupQuery(this); }
  33         public override XPathResultType StaticType { get { return qyInput.StaticType; } }
  34         public override QueryProps Properties { get { return QueryProps.Position; } } // Doesn't have QueryProps.Merge
  35     }
  36 }