/// <summary>
/// Reads in a key element as the appropriate type of <see cref="Key"/> object, and depending on if the
/// key is for node or edge, places it in <see cref="NodeDataMapKeys"/> or <see cref="EdgeDataMapKeys"/> accordingly.
/// </summary>
/// <param name="keyReader"></param>
/// <param name="reader"></param>
internal void ReadKey(KeyReader keyReader, XmlReader reader)
{
Key key = null;
keyReader.Read(out key, reader);
// Note: The index is used for the colIndex when the node/edge attribs are mapped
if (key.Domain == Domain.graph)
{
key.Index = GraphKeys.Count;
GraphKeys.Add(key.Id, key);
}
else if (key.Domain == Domain.node)
{
key.Index = NodeDataMapKeys.Count;
NodeDataMapKeys.Add(key.Id, key);
}
else if (key.Domain == Domain.edge)
{
key.Index = EdgeDataMapKeys.Count;
EdgeDataMapKeys.Add(key.Id, key);
}
}
//P1
/// <summary>
/// Reads the graphml element and reads keys, nodes and edge markers
/// </summary>
/// <param name="network">The network created from this method</param>
/// <param name="reader"></param>
/// <remarks>Assumes reader.Name == "graphml" and reader.IsStartElement() == true</remarks>
internal void ReadGraphML1(out IAdjList network, XmlReader reader)
{
// Create the keys and read the nodes
network = null;
if (reader.Name == "graphml" && reader.IsStartElement() && !reader.IsEmptyElement)
{
KeyReader kReader = new KeyReader();
while (reader.Read() && reader.IsStartElement() && !IsCancellationPending)
{
if (reader.Name == "key" && reader.IsStartElement())
{
ReadKey(kReader, reader);
}
else if (reader.Name == "graph" && reader.IsStartElement())
{
ReadNetwork(out network, reader);
}
else
throw new InvalidOperationException(string.Format("{0} elements are not supported yet.", reader.Name));
}
}
}
