/// <summary>
/// Gets a Graph from the Dataset that can be modified.
/// </summary>
/// <param name="graphUri">Graph URI.</param>
/// <returns></returns>
public sealed override IGraph GetModifiableGraph(Uri graphUri)
{
if (!_modifiableGraphs.HasGraph(graphUri))
{
IGraph current = GetModifiableGraphInternal(graphUri);
if (!_modifiableGraphs.HasGraph(current.BaseUri))
{
_modifiableGraphs.Add(current);
}
graphUri = current.BaseUri;
}
ITransactionalGraph existing = (ITransactionalGraph)_modifiableGraphs[graphUri];
_actions.Add(new GraphPersistenceAction(existing, GraphPersistenceActionType.Modified));
return(existing);
}
/// <summary>
/// Constructs a BatchGraph wrapping the provided baseGraph, using the specified buffer size and expecting vertex ids of
/// the specified IdType. Supplying vertex ids which do not match this type will throw exceptions.
/// </summary>
/// <param name="graph">Graph to be wrapped</param>
/// <param name="type"> Type of vertex id expected. This information is used to optimize the vertex cache memory footprint.</param>
/// <param name="bufferSize">Defines the number of vertices and edges loaded before starting a new transaction. The larger this value,
/// the more memory is required but the faster the loading process.</param>
public BatchGraph(ITransactionalGraph graph, VertexIdType type, long bufferSize)
{
if (graph == null)
{
throw new ArgumentNullException(nameof(graph));
}
if (bufferSize <= 0)
{
throw new ArgumentException("bufferSize must be greater than zero");
}
_baseGraph = graph;
_bufferSize = bufferSize;
_vertexIdKey = null;
_edgeIdKey = null;
_cache = type.GetVertexCache();
_remainingBufferSize = _bufferSize;
}
/// <summary>
/// Creates a new Graph Persistence action
/// </summary>
/// <param name="g">Graph</param>
/// <param name="action">Action Type</param>
public GraphPersistenceAction(ITransactionalGraph g, GraphPersistenceActionType action)
{
this._g = g;
this._action = action;
}
/// <summary>
/// Creates a new Graph Persistence action
/// </summary>
/// <param name="g">Graph</param>
/// <param name="action">Action Type</param>
public GraphPersistenceAction(ITransactionalGraph g, GraphPersistenceActionType action)
{
this._g = g;
this._action = action;
}
