/// <summary>
/// Add a node indexed by the specified key value.
/// </summary>
public void Add(string key, XPathNavigator navigator)
{
XmlQueryNodeSequence seq = (XmlQueryNodeSequence)this.table[key];
if (seq == null)
{
// Create a new sequence and add it to the index
seq = new XmlQueryNodeSequence();
seq.AddClone(navigator);
this.table.Add(key, seq);
}
else
{
// Add node to existing sequence; don't add if it already there
for (int i = 0; i < seq.Count; i++)
{
if (navigator.IsSamePosition(seq[i]))
{
return;
}
}
seq.AddClone(navigator);
}
}
/// <summary>
/// Add a node indexed by the specified key value.
/// </summary>
public void Add(string key, XPathNavigator navigator)
{
XmlQueryNodeSequence seq;
if (!this.table.TryGetValue(key, out seq))
{
// Create a new sequence and add it to the index
seq = new XmlQueryNodeSequence();
seq.AddClone(navigator);
this.table.Add(key, seq);
}
else
{
// The nodes are guaranteed to be added in document order with possible duplicates.
// Add node to the existing sequence if it differs from the last one.
Debug.Assert(navigator.ComparePosition(seq[seq.Count - 1]) >= 0, "Index nodes must be added in document order");
if (!navigator.IsSamePosition(seq[seq.Count - 1]))
{
seq.AddClone(navigator);
}
}
}