How to use

isOrderingCompatible

method

in

com.google.common.graph.AbstractNetwork

/**
 * Throws an IllegalArgumentException if the ordering of {@code endpoints} is not compatible
 * with the directionality of this graph.
 */
protected final void validateEndpoints(EndpointPair<?> endpoints) {
 checkNotNull(endpoints);
 checkArgument(isOrderingCompatible(endpoints), ENDPOINTS_MISMATCH);
}

@Override
public boolean hasEdgeConnecting(EndpointPair<N> endpoints) {
 checkNotNull(endpoints);
 if (!isOrderingCompatible(endpoints)) {
  return false;
 }
 return !edgesConnecting(endpoints.nodeU(), endpoints.nodeV()).isEmpty();
}