Java Code Examples for org.neo4j.graphdb.Node#hasLabel()
The following examples show how to use
org.neo4j.graphdb.Node#hasLabel() .
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Example 1
| Source File: ReferenceExtractor.java From SnowGraph with Apache License 2.0 | 6 votes |
|
public void run(GraphDatabaseService db) {
this.db = db;
codeIndexes = new CodeIndexes(db);
try (Transaction tx=db.beginTx()){
for (Node node:db.getAllNodes()){
if (!node.hasProperty(TextExtractor.IS_TEXT)||!(boolean)node.getProperty(TextExtractor.IS_TEXT))
continue;
if (node.hasLabel(Label.label(JavaCodeExtractor.CLASS)))
continue;
if (node.hasLabel(Label.label(JavaCodeExtractor.METHOD)))
continue;
if (node.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)))
continue;
if (node.hasLabel(Label.label(JavaCodeExtractor.FIELD)))
continue;
textNodes.add(node);
}
fromHtmlToCodeElement();
fromTextToJira();
fromDiffToCodeElement();
tx.success();
}
}
Example 2
| Source File: ReferenceExtractor.java From SnowGraph with Apache License 2.0 | 6 votes |
|
private void fromTextToJira(){
Map<String, Node> jiraMap=new HashMap<>();
try (Transaction tx = db.beginTx()) {
for (Node node:db.getAllNodes()){
if (node.hasLabel(Label.label(JiraExtractor.ISSUE))){
String name=(String) node.getProperty(JiraExtractor.ISSUE_NAME);
jiraMap.put(name, node);
}
}
tx.success();
}
try (Transaction tx = db.beginTx()) {
for (Node srcNode : textNodes) {
String content = text(srcNode);
Set<String> tokenSet=new HashSet<>();
for (String e:content.split("[^A-Za-z0-9\\-_]+"))
tokenSet.add(e);
for (String jiraName:jiraMap.keySet()){
if (tokenSet.contains(jiraName))
srcNode.createRelationshipTo(jiraMap.get(jiraName), RelationshipType.withName(REFERENCE));
}
}
tx.success();
}
}
Example 3
| Source File: Neo4jUtil.java From trainbenchmark with Eclipse Public License 1.0 | 6 votes |
|
public static Iterable<Node> getAdjacentNodes(final Node sourceNode, final RelationshipType relationshipType, final Direction direction, final Label targetNodeLabel) {
final Collection<Node> nodes = new ArrayList<>();
final Iterable<Relationship> relationships = sourceNode.getRelationships(relationshipType, direction);
for (final Relationship relationship : relationships) {
final Node candidate;
switch (direction) {
case INCOMING:
candidate = relationship.getStartNode();
break;
case OUTGOING:
candidate = relationship.getEndNode();
break;
default:
throw new UnsupportedOperationException("Direction: " + direction + " not supported.");
}
if (!candidate.hasLabel(targetNodeLabel)) {
continue;
}
nodes.add(candidate);
}
return nodes;
}
Example 4
| Source File: Neo4jIndexer.java From elasticsearch-river-neo4j with Apache License 2.0 | 6 votes |
|
public void index() {
version = getVersion();
logger.debug("Awake and about to poll...");
Iterable<Node> r = db.getAllNodes();
for (Node node : r) {
// If labels exists, filter nodes by label
if(labels.size() > 0) {
for (Label label : labels) {
if(node.hasLabel(label)) {
worker.queue(new IndexOperation(indexingStrategy, index, type, node, version));
}
}
} else {
worker.queue(new IndexOperation(indexingStrategy, index, type, node, version));
}
}
logger.debug("...polling completed");
logger.debug("Deleting all nodes with version < {}", version);
worker.queue(new ExpungeOperation(deletingStategy, index, type, version));
}
Example 5
| Source File: TransExtractor.java From SnowGraph with Apache License 2.0 | 5 votes |
|
private void prepare() {
List<String> entities = new ArrayList<>();
List<String> relations = new ArrayList<>();
List<Triple<String, String, String>> triples = new ArrayList<>();
try (Transaction tx = db.beginTx()) {
for (Node node : db.getAllNodes()) {
if (!node.hasLabel(Label.label(JavaCodeExtractor.CLASS)) &&
!node.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)) &&
!node.hasLabel(Label.label(JavaCodeExtractor.METHOD)) &&
!node.hasLabel(Label.label(JavaCodeExtractor.FIELD)))
continue;
entities.add("" + node.getId());
}
for (Relationship rel : db.getAllRelationships()) {
Node node1 = rel.getStartNode();
if (!node1.hasLabel(Label.label(JavaCodeExtractor.CLASS)) &&
!node1.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)) &&
!node1.hasLabel(Label.label(JavaCodeExtractor.METHOD)) &&
!node1.hasLabel(Label.label(JavaCodeExtractor.FIELD)))
continue;
Node node2 = rel.getEndNode();
if (!node2.hasLabel(Label.label(JavaCodeExtractor.CLASS)) &&
!node2.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)) &&
!node2.hasLabel(Label.label(JavaCodeExtractor.METHOD)) &&
!node2.hasLabel(Label.label(JavaCodeExtractor.FIELD)))
continue;
triples.add(new ImmutableTriple<>("" + node1.getId(), "" + node2.getId(), rel.getType().name()));
if (!relations.contains(rel.getType().name()))
relations.add(rel.getType().name());
}
tx.success();
}
transE.prepare(entities, relations, triples);
}
Example 6
| Source File: Neo4JApiQuerySwitchMonitored.java From trainbenchmark with Eclipse Public License 1.0 | 5 votes |
|
@Override
public Collection<Neo4jSwitchMonitoredMatch> evaluate() {
final Collection<Neo4jSwitchMonitoredMatch> matches = new ArrayList<>();
final GraphDatabaseService graphDb = driver.getGraphDb();
try (Transaction tx = graphDb.beginTx()) {
final Iterable<Node> sws = () -> graphDb.findNodes(Neo4jConstants.labelSwitch);
// (sw:Switch)
for (final Node sw : sws) {
// (sw)-[:sensor]->(Sensor) NAC
final Iterable<Relationship> relationshipSensors = sw.getRelationships(Direction.OUTGOING, Neo4jConstants.relationshipTypeMonitoredBy);
boolean hasSensor = false;
for (final Relationship relationshipSensor : relationshipSensors) {
final Node sensor = relationshipSensor.getEndNode();
if (sensor.hasLabel(Neo4jConstants.labelSensor)) {
hasSensor = true;
break;
}
}
if (!hasSensor) {
final Map<String, Object> match = new HashMap<>();
match.put(VAR_SW, sw);
matches.add(new Neo4jSwitchMonitoredMatch(match));
}
}
}
return matches;
}
Example 7
| Source File: Clique.java From SciGraph with Apache License 2.0 | 5 votes |
|
private boolean containsOneLabel(Node n, Set<Label> labels) {
for (Label l : labels) {
if (n.hasLabel(l)) {
return true;
}
}
return false;
}
Example 8
| Source File: CodeIndexes.java From SnowGraph with Apache License 2.0 | 4 votes |
|
public CodeIndexes(GraphDatabaseService db) {
try (Transaction tx = db.beginTx()) {
ResourceIterator<Node> nodes = db.getAllNodes().iterator();
Set<Node> codeNodes = new HashSet<>();
while (nodes.hasNext()) {
Node node = nodes.next();
if (node.hasLabel(Label.label(JavaCodeExtractor.CLASS)) || node.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)) || node.hasLabel(Label.label(JavaCodeExtractor.METHOD))) {
codeNodes.add(node);
}
}
for (Node codeNode : codeNodes) {
String name = "";
boolean type = true;
if (codeNode.hasLabel(Label.label(JavaCodeExtractor.CLASS)))
name = (String) codeNode.getProperty(JavaCodeExtractor.CLASS_FULLNAME);
if (codeNode.hasLabel(Label.label(JavaCodeExtractor.INTERFACE)))
name = (String) codeNode.getProperty(JavaCodeExtractor.INTERFACE_FULLNAME);
if (codeNode.hasLabel(Label.label(JavaCodeExtractor.METHOD))) {
name = codeNode.getProperty(JavaCodeExtractor.METHOD_BELONGTO) + "." + codeNode.getProperty(JavaCodeExtractor.METHOD_NAME);
type = false;
}
if (name.contains("$"))
continue;
if (type) {
typeMap.put(name, codeNode.getId());
idToTypeNameMap.put(codeNode.getId(), name);
String shortName = name;
int p = shortName.lastIndexOf('.');
if (p > 0)
shortName = shortName.substring(p + 1, shortName.length());
if (!typeShortNameMap.containsKey(shortName))
typeShortNameMap.put(shortName, new HashSet<>());
typeShortNameMap.get(shortName).add(codeNode.getId());
} else {
if (!methodMap.containsKey(name))
methodMap.put(name, new HashSet<>());
methodMap.get(name).add(codeNode.getId());
idToMethodNameMap.put(codeNode.getId(), name);
int p1 = name.lastIndexOf('.');
int p2 = name.lastIndexOf('.', p1 - 1);
String midName, shortName;
if (p2 > 0) {
midName = name.substring(p2 + 1);
shortName = name.substring(p1 + 1);
} else {
midName = name;
shortName = name.substring(p1 + 1);
}
if (!methodMidNameMap.containsKey(midName))
methodMidNameMap.put(midName, new HashSet<>());
methodMidNameMap.get(midName).add(codeNode.getId());
if (!methodShortNameMap.containsKey(shortName))
methodShortNameMap.put(shortName, new HashSet<>());
methodShortNameMap.get(shortName).add(codeNode.getId());
}
}
tx.success();
}
}
Example 9
| Source File: Clique.java From SciGraph with Apache License 2.0 | 4 votes |
|
private void markAsCliqueLeader(Node n) {
if (!n.hasLabel(CLIQUE_LEADER_LABEL)) {
n.addLabel(CLIQUE_LEADER_LABEL);
}
}
