// public override IEnumerable<Edge> GetPropertyEdgesV<V>(V value, Graph g)
// {
// return GetPropertyEdges(value, g);
// }
/// <inheritdoc />
public IEnumerable <Edge> GetPropertyEdges(T value)
{
EdgeId elementId = -1;
EdgeType edgeType = MyGraph.EdgeTypes[TypeId];
if (m_valueIndexUnique == null || m_valueIndexUnique.TryGetValue(value, out elementId) == false)
{
BTreeSet <ElementId> elementIds;
if (m_valueIndex != null && m_valueIndex.TryGetValue(value, out elementIds))
{
foreach (ElementId eId in elementIds)
{
yield return(edgeType.GetEdge(eId));
}
}
}
if (elementId != -1)
{
yield return(edgeType.GetEdge(elementId));
}
}
/// <summary>
/// Return the edge referenced by the provided object identifier.
/// If no edge is referenced by that identifier, then return null.
/// </summary>
/// <param name="id">the identifier of the edge to retrieved from the graph</param>
/// <returns>the edge referenced by the provided identifier or null when no such edge exists</returns>
public IEdge GetEdge(object id)
{
if (id == null)
{
throw new ArgumentException("id may not be null, it should be a UInt64");
}
if (id is UInt64)
{
UInt64 fullId = (UInt64)id;
EdgeTypeId edgeTypeId = (EdgeTypeId)(fullId >> 32);
EdgeType et = edgeType[edgeTypeId];
EdgeId edgeId = (EdgeId)fullId;
Edge edge = et.GetEdge(edgeId);
return(edge);
}
return(null);
}
/// <summary>
/// Try to find an <see cref="Edge"/> with a given property value.
/// </summary>
/// <param name="value">the property value to look for</param>
/// <returns>An edge with a matching property value</returns>
public Edge GetPropertyEdge(T value)
{
EdgeId elementId = -1;
if (m_valueIndexUnique == null || m_valueIndexUnique.TryGetValue(value, out elementId) == false)
{
BTreeSet <ElementId> elementIds;
if (m_valueIndex != null && m_valueIndex.TryGetValue(value, out elementIds))
{
elementId = elementIds.First();
}
}
if (elementId == -1)
{
return(null);
}
EdgeType edgeType = MyGraph.EdgeTypes[TypeId];
return(edgeType.GetEdge(elementId));
}