@Override
public Vertex getVertex() {
try {
return localGraphDatabase.getVertexObject(storingGraphDatabase.getVertexIdAtIncidenceId(id));
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@Override
public Iterable<Edge> getThoseEdges(Graph traversalContext) {
Vertex vertex;
try {
vertex =
localGraphDatabase.getVertexObject(storingGraphDatabase.getVertexIdAtIncidenceId(id));
} catch (RemoteException e) {
throw new RuntimeException(e);
}
assert getGraph().getTraversalContext() == null
|| getGraph().getTraversalContext().containsVertex(vertex);
return vertex.getIncidentEdges(traversalContext, getDirection().getOppositeDirection());
}
@Override
public Incidence getPreviousIncidenceAtVertex(Graph traversalContext) {
Incidence currentIncidence;
try {
currentIncidence =
localGraphDatabase.getIncidenceObject(
storingGraphDatabase.getPreviousIncidenceIdAtVertexId(
storingGraphDatabase.getVertexIdAtIncidenceId(id)));
} catch (RemoteException e) {
throw new RuntimeException(e);
}
while ((traversalContext != null)
&& (currentIncidence != null)
&& (!traversalContext.containsEdge(currentIncidence.getEdge()))) {
currentIncidence = currentIncidence.getPreviousIncidenceAtVertex();
}
return currentIncidence;
}
@Override
public Vertex getThis(Graph traversalContext) {
try {
if (!localGraphDatabase
.getEdgeObject(storingGraphDatabase.getEdgeIdAtIncidenceId(id))
.isBinary()) {
throw new UnsupportedOperationException("This method is only supported by binary Edges.");
} else {
Vertex vertex =
localGraphDatabase.getVertexObject(storingGraphDatabase.getVertexIdAtIncidenceId(id));
if (getGraph().getTraversalContext() == null
|| getGraph().getTraversalContext().containsVertex(vertex)) {
return vertex;
} else {
return null;
}
}
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}