Package oracle.pgx.algorithm

Interface PgxVertex

  • public interface PgxVertex
    A vertex of a PgxGraph.

    • Field Detail

      • NONE

        static final PgxVertex NONE
        A value indicating the absence of a vertex.

    • Method Detail

      • getNeighbors

        VertexSet getNeighbors()
        Returns all neighbors of this vertex.
        Returns:

      • getOutNeighbors

        VertexSet getOutNeighbors()
        Returns all outgoing neighbors of this vertex, i.e., all nodes this vertex has an edge to.
        Returns:

      • getInNeighbors

        VertexSet getInNeighbors()
        Returns all incoming neighbors of this vertex, i.e., all vertices that have an edge to this vertex.
        Returns:

      • getRandomInNeighbor

        PgxVertex getRandomInNeighbor()
        Return a random incoming neighbor. If the graph is undirected, this method behaves the same as getRandomOutNeighbor().
        Returns:

      • getRandomOutNeighbor

        PgxVertex getRandomOutNeighbor()
        Return a random outgoing neighbor.
        Returns:

      • getRandomInOutNeighbor

        PgxVertex getRandomInOutNeighbor()
        Return a random incoming or outgoing neighbor. If the graph is undirected, this method behaves the same as getRandomOutNeighbor().
        Returns:

      • getOutEdges

        EdgeSet getOutEdges()
        Returns all outgoing edges of this vertex.
        Returns:

      • getInEdges

        EdgeSet getInEdges()
        Returns all incoming edges of this vertex.
        Returns:

      • parentVertex

        PgxVertex parentVertex()
        Returns the vertex that was visited before this vertex. Only applicable within a traversal.
        Returns:

      • parentEdge

        PgxEdge parentEdge()
        Returns the edge through which this vertex was reached. Only applicable within a traversal.
        Returns:

      • getDegree

        long getDegree()
        Get the out-degree of this vertex.
        Returns:

      • getOutDegree

        long getOutDegree()
        Get the out-degree of this vertex.
        Returns:

      • getInDegree

        long getInDegree()
        Get the in-degree of this vertex.
        Returns:

      • edge

        PgxEdge edge()
        Get the edge through which this vertex was reached. Only applicable within a neighbor iteration.
        Returns:

      • hasEdgeTo

        boolean hasEdgeTo​(PgxVertex v)
        Check if there is an edge from this vertex to the given vertex.
        Parameters:
        v -
        Returns:

      • hasEdgeFrom

        boolean hasEdgeFrom​(PgxVertex v)
        Check if there is an edge from the given vertex to this vertex.
        Parameters:
        v -
        Returns:

      • greaterThan

        boolean greaterThan​(PgxVertex v)
        Check whether this vertex is greater than the given vertex according to the ordering induced on the vertices.
        Parameters:
        v -
        Returns:

      • lessThan

        boolean lessThan​(PgxVertex v)
        Check whether this vertex is less than the given vertex according to the ordering induced on the vertices.
        Parameters:
        v -
        Returns:

      • getUpNeighbors

        VertexSet getUpNeighbors()
        Get the up-neighbors. Only applicable within a traversal.
        Returns:

      • getDownNeighbors

        VertexSet getDownNeighbors()
        Get the down-neighbors. Only applicable within a traversal.
        Returns: