// TODO unit test that
static boolean removeEdge(Graph graph, Relationship relationship) {
Edge edge = graph.getEdge(relationship.getId());
if (null != edge) {
graph.removeEdge(edge);
return true;
} else {
return false;
}
}
static Edge addEdge(Graph graph, Edge edge) {
Edge newEdge = graph.getEdge(edge.getId());
if (null == newEdge) {
Vertex outVertex = addNode(graph, edge.getVertex(Direction.OUT));
Vertex inVertex = addNode(graph, edge.getVertex(Direction.IN));
String label = edge.getLabel();
newEdge = graph.addEdge(edge.getId(), outVertex, inVertex, label);
copyProperties(edge, edge);
}
return newEdge;
}
static Edge addEdge(Graph graph, Relationship relationship) {
Edge edge = graph.getEdge(relationship.getId());
if (null == edge) {
Vertex outVertex = addNode(graph, relationship.getStartNode());
Vertex inVertex = addNode(graph, relationship.getEndNode());
String label = relationship.getType().name();
// TODO #152 add CurieUtil to resolve IRI to Curie
edge = graph.addEdge(relationship.getId(), outVertex, inVertex, label);
copyProperties(relationship, edge);
}
return edge;
}