[SOLVED] OrientDB Edge Index via Java

OrientDB Edge Index via Java

Is there a way using the Java API to access an edge index in OrientDB to determine whether a edge with a given label exists in between two known vertices?

Afaik tinkergraph is not exposing any methods for this?

I believe that Neo4j is providing an API like this:

graphDatabaseService.index().forRelationships("HAS_USER").get(key, valueOrNull, startNodeOrNull, endNodeOrNull)

Solution

You can call getEdges() from your vertex. Example:

v1.getEdges(v2, Direction.BOTH, "HAS_USER");

This is the JavaDoc:

/**
   * (Blueprints Extension) Returns all the edges from the current Vertex to another one.
   *
   * @param iDestination
   *          The target vertex
   * @param iDirection
   *          The direction between OUT, IN or BOTH
   * @param iLabels
   *          Optional labels as Strings to consider
   * @return
   */
  public Iterable<Edge> getEdges(final OrientVertex iDestination, final Direction iDirection, final String... iLabels)