@Override
public WeightedPath findSinglePath(Node start, Node end) {
lastMetadata = new Metadata();
AStarIterator iterator = new AStarIterator(start, end);
while (iterator.hasNext()) {
Node node = iterator.next();
GraphDatabaseService graphDb = node.getGraphDatabase();
if (node.equals(end)) {
// Hit, return path
double weight = iterator.visitData.get(node.getId()).wayLength;
LinkedList<Relationship> rels = new LinkedList<Relationship>();
Relationship rel =
graphDb.getRelationshipById(iterator.visitData.get(node.getId()).cameFromRelationship);
while (rel != null) {
rels.addFirst(rel);
node = rel.getOtherNode(node);
long nextRelId = iterator.visitData.get(node.getId()).cameFromRelationship;
rel = nextRelId == -1 ? null : graphDb.getRelationshipById(nextRelId);
}
Path path = toPath(start, rels);
lastMetadata.paths++;
return new WeightedPathImpl(weight, path);
}
}
return null;
}
void setProperty(String nodeName, String propertyName, Object propertyValue) {
Node i = this.getNode(nodeName);
GraphDatabaseService db = i.getGraphDatabase();
Transaction tx = db.beginTx();
i.setProperty(propertyName, propertyValue);
tx.success();
tx.finish();
}
protected void add(Node geomNode, Geometry geom, String property, Comparable<?> value) {
SpatialDatabaseRecord result = new SpatialDatabaseRecord(layer, geomNode, geom);
Transaction tx = geomNode.getGraphDatabase().beginTx();
try {
result.setProperty(property, value);
tx.success();
} finally {
tx.finish();
}
result.setUserData(value);
results.add(result);
}
@Override
public void delete() {
Transaction tx = node.getGraphDatabase().beginTx();
try {
getRelationTo().delete();
node.delete();
tx.success();
} finally {
tx.finish();
}
}
@Override
public synchronized Object getRootNode() {
return (node.getGraphDatabase().getReferenceNode());
}