/// <summary>
/// Adds the "addV()" step to the traversal, creating a new vertex in the graph.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="traversal">The traversal.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TVertex> AddV <TVertex>(this ITraversal traversal)
where TVertex : IVertex
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
return(traversal.AsGraphTraversal().AddV(label).AsSchemaBound <object, TVertex>());
}
/// <summary>
/// Adds the "addE()" step to the traversal, creating a new edge in the graph.
/// </summary>
/// <typeparam name="TEdge">The type of the edge.</typeparam>
/// <param name="traversal">The traversal.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TEdge> AddE <TEdge>(this ITraversal traversal)
where TEdge : IEdge
{
var label = LabelNameResolver.GetLabelName(typeof(TEdge));
return(traversal.AsGraphTraversal().AddE(label).AsSchemaBound <object, TEdge>());
}
/// <summary>
/// Adds the "E().HasLabel(label_for_type_of_edge)" step to the traversal.
/// </summary>
/// <typeparam name="TEdge">The type of the edge.</typeparam>
/// <param name="graphTraversalSource">The graph traversal source.</param>
/// <param name="edgeIds">The edge id(s).</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <Edge, TEdge> E <TEdge>(this IGraphTraversalSource graphTraversalSource, params object[] edgeIds)
{
var label = LabelNameResolver.GetLabelName(typeof(TEdge));
var traversal = graphTraversalSource.E(edgeIds).HasLabel(label);
return(traversal.AsSchemaBound <Edge, TEdge>());
}
/// <summary>
/// Adds the "V().HasLabel(label_for_type_of_node)" step to the traversal.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graphTraversalSource">The graph traversal source.</param>
/// <param name="vertexIds">The vertex id(s).</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <Vertex, TVertex> V <TVertex>(this IGraphTraversalSource graphTraversalSource, params object[] vertexIds)
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
var traversal = graphTraversalSource.V(vertexIds).HasLabel(label);
return(traversal.AsSchemaBound <Vertex, TVertex>());
}
/// <summary>
/// Adds the "addV()" step to the traversal, creating a new vertex in the graph.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graphTraversalSource">The graph traversal source.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TVertex> AddV <TVertex>(this IGraphTraversalSource graphTraversalSource)
where TVertex : VertexBase
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
return(graphTraversalSource.AddV(label).AsSchemaBound <object, TVertex>());
}
/// <summary>
/// Adds the "V(["partitionKey", "id"]).HasLabel(label_for_type_of_node)" step to the traversal.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graphTraversalSource">The graph traversal source.</param>
/// <param name="partitionKeyIdPairs">The pair(s) of vertex partition key and id.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <Vertex, TVertex> V <TVertex>(this IGraphTraversalSource graphTraversalSource, params PartitionKeyIdPair[] partitionKeyIdPairs)
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
var traversal = graphTraversalSource.V(partitionKeyIdPairs).HasLabel(label);
return(traversal.AsSchemaBound <Vertex, TVertex>());
}
/// <summary>
/// Adds the "outE()" step to the traversal, returning all adjacent outbound edges
/// </summary>
/// <typeparam name="S">The source of the traversal</typeparam>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <typeparam name="TEdge">The type of the edge.</typeparam>
/// <param name="traversal">The traversal.</param>
/// <param name="edgeSelector">The edge selector.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <S, TEdge> OutE <S, TVertex, TEdge>(this ISchemaBoundTraversal <S, TVertex> traversal, Expression <Func <TVertex, TEdge> > edgeSelector)
where TVertex : VertexBase
where TEdge : IHasOutVertex <TVertex>
{
var labelName = LabelNameResolver.GetLabelName(typeof(TEdge));
return(traversal.AsGraphTraversal().OutE(labelName).AsSchemaBound <S, TEdge>());
}
/// <summary>
/// Adds the "out()" step to the traversal, returning all adjacent vertices connected via outbount edges
/// </summary>
/// <typeparam name="S">The source of the traversal</typeparam>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <typeparam name="TinVertex">The type of the "in"/destination vertex.</typeparam>
/// <param name="traversal">The traversal.</param>
/// <param name="edgeSelector">The edge selector.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <S, TinVertex> Out <S, TVertex, TinVertex>(this ISchemaBoundTraversal <S, TVertex> traversal, Expression <Func <TVertex, IEdge <TVertex, TinVertex> > > edgeSelector)
where TVertex : IVertex
where TinVertex : IVertex
{
var labelName = GetLabelName(typeof(TVertex), edgeSelector);
var inVertexLabel = LabelNameResolver.GetLabelName(typeof(TinVertex));
return(traversal.AsGraphTraversal().Out(labelName).HasLabel(inVertexLabel).AsSchemaBound <S, TinVertex>());
}
/// <summary>
/// Adds the "addV()" step to the traversal, creating a new vertex in the graph.
/// </summary>
/// <typeparam name="TEdge">The type of the edge.</typeparam>
/// <param name="traversal">The graph traversal.</param>
/// <param name="edge">The edge to add.</param>
/// <param name="serializationSettings">The serialization settings.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TEdge> AddE <TEdge>(this ITraversal traversal, TEdge edge, JsonSerializerSettings serializationSettings)
where TEdge : IEdge
{
var label = LabelNameResolver.GetLabelName(typeof(TEdge));
var t = traversal.AsGraphTraversal().AddE(label);
t = TraversalHelper.AddObjectProperties(t, edge, serializationSettings);
return(t.AsSchemaBound <object, TEdge>());
}
/// <summary>
/// Adds the "addV()" step to the traversal, creating a new vertex in the graph.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="traversal">The graph traversal.</param>
/// <param name="vertex">The vertex to add.</param>
/// <param name="serializationSettings">The serialization settings.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TVertex> AddV <TVertex>(this ITraversal traversal, TVertex vertex, JsonSerializerSettings serializationSettings)
where TVertex : IVertex
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
var t = traversal.AsGraphTraversal().AddV(label);
t = TraversalHelper.AddObjectProperties(t, vertex, serializationSettings);
return(t.AsSchemaBound <object, TVertex>());
}
/// <summary>
/// Adds the "addV()" step to the traversal, creating a new vertex in the graph.
/// </summary>
/// <typeparam name="TVertex">The type of the vertex.</typeparam>
/// <param name="graphTraversalSource">The graph traversal source.</param>
/// <param name="vertex">The vertex to add.</param>
/// <param name="serializationSettings">The serialization settings.</param>
/// <returns>Returns the resulting traversal</returns>
public static ISchemaBoundTraversal <object, TVertex> AddV <TVertex>(this IGraphTraversalSource graphTraversalSource, TVertex vertex, JsonSerializerSettings serializationSettings)
where TVertex : VertexBase
{
var label = LabelNameResolver.GetLabelName(typeof(TVertex));
var traversal = graphTraversalSource.AddV(label);
traversal = TraversalHelper.AddObjectProperties(traversal, vertex, serializationSettings);
return(traversal.AsSchemaBound <object, TVertex>());
}
/// <summary>
/// Gets the name of the label of the property's type.
/// </summary>
/// <param name="sourceType">Type of the source object from which the lambda started.</param>
/// <param name="lambda">The lambda.</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException">lambda</exception>
/// <exception cref="ArgumentException"></exception>
private static string GetLabelName(Type sourceType, LambdaExpression lambda)
{
var propInfo = GetPropertyInfo(lambda);
if (sourceType != propInfo.ReflectedType && !sourceType.IsSubclassOf(propInfo.ReflectedType))
{
throw new ArgumentException($"Expression '{lambda}' refers to a property that is not from type {sourceType}.");
}
return(LabelNameResolver.GetLabelName(propInfo));
}
