private TypedId getStartOrEnd(NodeOrRelationship current, String arg) throws ShellException {
if (!current.isRelationship()) {
throw new ShellException("Only allowed on relationships");
}
Node newNode = null;
if (arg.equals(START_ALIAS)) {
newNode = current.asRelationship().getStartNode();
} else if (arg.equals(END_ALIAS)) {
newNode = current.asRelationship().getEndNode();
} else {
throw new ShellException("Unknown alias '" + arg + "'");
}
return NodeOrRelationship.wrap(newNode).getTypedId();
}
@Override
public List<String> completionCandidates(String partOfLine, Session session) {
String lastWord = TextUtil.lastWordOrQuoteOf(partOfLine, false);
if (lastWord.startsWith("-")) {
return super.completionCandidates(partOfLine, session);
}
try {
TreeSet<String> result = new TreeSet<String>();
NodeOrRelationship current = getCurrent(session);
if (current.isNode()) {
// TODO Check if -r is supplied
Node node = current.asNode();
for (Node otherNode : RelationshipToNodeIterable.wrap(node.getRelationships(), node)) {
long otherNodeId = otherNode.getId();
String title = findTitle(getServer(), session, otherNode);
if (title != null) {
if (!result.contains(title)) {
maybeAddCompletionCandidate(result, title + "," + otherNodeId, lastWord);
}
}
maybeAddCompletionCandidate(result, "" + otherNodeId, lastWord);
}
} else {
maybeAddCompletionCandidate(result, START_ALIAS, lastWord);
maybeAddCompletionCandidate(result, END_ALIAS, lastWord);
Relationship rel = current.asRelationship();
maybeAddCompletionCandidate(result, "" + rel.getStartNode().getId(), lastWord);
maybeAddCompletionCandidate(result, "" + rel.getEndNode().getId(), lastWord);
}
return new ArrayList<String>(result);
} catch (ShellException e) {
e.printStackTrace();
return super.completionCandidates(partOfLine, session);
}
}
private boolean isConnected(NodeOrRelationship current, TypedId newId) throws ShellException {
if (current.isNode()) {
Node currentNode = current.asNode();
for (Relationship rel : currentNode.getRelationships()) {
if (newId.isNode()) {
if (rel.getOtherNode(currentNode).getId() == newId.getId()) {
return true;
}
} else {
if (rel.getId() == newId.getId()) {
return true;
}
}
}
} else {
if (newId.isRelationship()) {
return false;
}
Relationship relationship = current.asRelationship();
if (relationship.getStartNode().getId() == newId.getId()
|| relationship.getEndNode().getId() == newId.getId()) {
return true;
}
}
return false;
}
/**
* @param server the {@link GraphDatabaseShellServer} to run at.
* @param session the {@link Session} used by the client.
* @param thing the thing to get the name-representation for.
* @return the display name for a {@link Node}.
*/
public static String getDisplayName(
GraphDatabaseShellServer server,
Session session,
NodeOrRelationship thing,
boolean checkForMe)
throws ShellException {
if (thing.isNode()) {
return getDisplayName(server, session, thing.asNode(), checkForMe);
} else {
return getDisplayName(server, session, thing.asRelationship(), true, checkForMe);
}
}