/// <summary>
/// Create the graph element and stores graph level data.
/// </summary>
/// <param name="writer">xml writer</param>
/// <param name="baseGraph">"base" graph of g</param>
/// <param name="g">graph to serialize</param>
protected override void WriteGraphElem(
XmlWriter writer,
ISerializableVertexAndEdgeListGraph baseGraph,
IVertexAndEdgeListGraph g
)
{
writer.WriteStartElement("gxl");
// adding xsd ref
writer.WriteAttributeString("xmlns", "http://www.gupro.de/GXL/xmlschema/gxl-1.0.xsd");
// adding graph node
writer.WriteStartElement("graph");
writer.WriteAttributeString("edgeids", "true");
if (g.IsDirected)
{
writer.WriteAttributeString("edgemode", "directed");
}
else
{
writer.WriteAttributeString("edgemode", "undirected");
}
// adding type information
IGraphSerializationInfo info = new GraphSerializationInfo(true);
info.Add("graph-type", GetTypeQualifiedName(baseGraph));
info.Add("vertex-provider-type", GetTypeQualifiedName(baseGraph.VertexProvider));
info.Add("edge-provider-type", GetTypeQualifiedName(baseGraph.EdgeProvider));
info.Add("allow-parallel-edges", g.AllowParallelEdges);
WriteInfo(writer, info);
}
/// <summary>
/// Create the graph element and stores graph level data.
/// </summary>
/// <param name="writer">xml writer</param>
/// <param name="baseGraph">"base" graph of g</param>
/// <param name="g">graph to serialize</param>
protected override void WriteGraphElem(
XmlWriter writer,
ISerializableVertexAndEdgeListGraph baseGraph,
IVertexAndEdgeListGraph g
)
{
writer.WriteStartElement("gxl");
// adding xsd ref
writer.WriteAttributeString("xmlns","http://www.gupro.de/GXL/xmlschema/gxl-1.0.xsd");
// adding graph node
writer.WriteStartElement("graph");
writer.WriteAttributeString("edgeids","true");
if (g.IsDirected)
writer.WriteAttributeString("edgemode","directed");
else
writer.WriteAttributeString("edgemode","undirected");
// adding type information
IGraphSerializationInfo info = new GraphSerializationInfo(true);
info.Add("graph-type",GetTypeQualifiedName(baseGraph));
info.Add("vertex-provider-type",GetTypeQualifiedName(baseGraph.VertexProvider));
info.Add("edge-provider-type",GetTypeQualifiedName(baseGraph.EdgeProvider));
info.Add("allow-parallel-edges",g.AllowParallelEdges);
WriteInfo(writer,info);
}
/// <summary>
/// Reads custom info from GraphMl
/// </summary>
/// <param name="reader">xml reader</param>
/// <returns>custom data</returns>
protected GraphSerializationInfo ReadInfo(
XmlReader reader)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
while (MoveToElement(reader, "attr"))
{
MoveToAttribute(reader, "name", true);
string key = reader.Value;
if (!MoveNextElement(reader))
{
throw new Exception("expected data, not found");
}
string t = reader.Name;
if (!reader.Read())
{
throw new Exception("expected data, not found");
}
string value = reader.Value;
info.Add(key, value);
MovePastEndElement(reader, t);
MovePastEndElement(reader, "attr");
}
if (info.Count > 0)
{
return(info);
}
else
{
return(null);
}
}
private GraphType SerializeGraph(
ISerializableVertexAndEdgeListGraph baseGraph,
IVertexAndEdgeListGraph g)
{
// create graph node
GraphType graph = new GraphType();
// fill up graph
if (g.IsDirected)
{
graph.EdgeDefault = GraphEdgeDefaultType.Directed;
}
else
{
graph.EdgeDefault = GraphEdgeDefaultType.Undirected;
}
// adding type information
IGraphSerializationInfo info = new GraphSerializationInfo(true);
info.Add(graphTypeKeyName, GetTypeQualifiedName(baseGraph));
info.Add(vertexProviderTypeKeyName, GetTypeQualifiedName(baseGraph.VertexProvider));
info.Add(edgeProviderTypeKeyName, GetTypeQualifiedName(baseGraph.EdgeProvider));
info.Add(allowParallelEdgesKeyName, g.AllowParallelEdges);
// add data...
foreach (DataType dt in ToDatas(info))
{
graph.Items.AddData(dt);
}
// add vertices
foreach (IVertex v in g.Vertices)
{
graph.Items.AddNode(SerializeVertex(v));
}
// add edges
foreach (IEdge e in g.Edges)
{
graph.Items.AddEdge(SerializeEdge(e));
}
return(graph);
}
private IGraphSerializationInfo InfoFromEdge(EdgeType edge)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
foreach (DataType dt in edge.Data)
{
info.Add(dt.Key, dt.Text);
}
return(info);
}
private IGraphSerializationInfo InfoFromNode(NodeType node)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
foreach (Object o in node.Items)
{
DataType dt = o as DataType;
if (dt == null)
{
continue;
}
info.Add(dt.Key, dt.Text.ToString());
}
return(info);
}
private IGraphSerializationInfo InfoFromEdge(EdgeType edge)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
foreach(DataType dt in edge.Data)
{
info.Add(dt.Key, dt.Text);
}
return info;
}
private IGraphSerializationInfo InfoFromNode(NodeType node)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
foreach(Object o in node.Items)
{
DataType dt = o as DataType;
if (dt==null)
continue;
info.Add(dt.Key, dt.Text.ToString());
}
return info;
}
private GraphType SerializeGraph(
ISerializableVertexAndEdgeListGraph baseGraph,
IVertexAndEdgeListGraph g)
{
// create graph node
GraphType graph = new GraphType();
// fill up graph
if (g.IsDirected)
graph.EdgeDefault = GraphEdgeDefaultType.Directed;
else
graph.EdgeDefault= GraphEdgeDefaultType.Undirected;
// adding type information
IGraphSerializationInfo info = new GraphSerializationInfo(true);
info.Add(graphTypeKeyName,GetTypeQualifiedName(baseGraph));
info.Add(vertexProviderTypeKeyName,GetTypeQualifiedName(baseGraph.VertexProvider));
info.Add(edgeProviderTypeKeyName,GetTypeQualifiedName(baseGraph.EdgeProvider));
info.Add(allowParallelEdgesKeyName,g.AllowParallelEdges);
// add data...
foreach(DataType dt in ToDatas(info))
{
graph.Items.AddData(dt);
}
// add vertices
foreach(IVertex v in g.Vertices)
graph.Items.AddNode( SerializeVertex(v) );
// add edges
foreach(IEdge e in g.Edges)
graph.Items.AddEdge( SerializeEdge(e) );
return graph;
}
/// <summary>
/// Reads custom info from GraphMl
/// </summary>
/// <param name="reader">xml reader</param>
/// <returns>custom data</returns>
protected GraphSerializationInfo ReadInfo(
XmlReader reader)
{
GraphSerializationInfo info = new GraphSerializationInfo(false);
while (MoveToElement(reader,"attr"))
{
MoveToAttribute(reader,"name",true);
string key = reader.Value;
if (!MoveNextElement(reader))
throw new Exception("expected data, not found");
string t = reader.Name;
if (!reader.Read())
throw new Exception("expected data, not found");
string value = reader.Value;
info.Add(key,value);
MovePastEndElement(reader,t);
MovePastEndElement(reader,"attr");
}
if (info.Count>0)
return info;
else
return null;
}