org.neo4j.driver.v1.types.Path Java Examples

The following examples show how to use org.neo4j.driver.v1.types.Path. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: BoltContentHandler.java    From jcypher with Apache License 2.0 6 votes vote down vote up 
@Override
public PathInfo getPathInfo(String colKey) {
	PathInfo pathInfo = null;
	Value val;
	try {
		val = this.record.get(colKey);
	} catch (NoSuchRecordException e) {
		throw new RuntimeException("no result column: " + colKey);
	}
	String typName = val.type().name();
	if ("PATH".equals(typName)) {
		Path p = val.asPath();
		long startId = p.start().id();
		long endId = p.end().id();
		List<Long> relIds = new ArrayList<Long>();
		Iterator<Relationship> it = p.relationships().iterator();
		while(it.hasNext()) {
			Relationship rel = it.next();
			relIds.add(Long.valueOf(rel.id()));
		}
		pathInfo = new PathInfo(startId, endId, relIds, p);
	}
	return pathInfo;
}
Example #2
Source File: BoltContentHandler.java    From jcypher with Apache License 2.0 6 votes vote down vote up 
@SuppressWarnings("unchecked")
@Override
public long gePathtNodeIdAt(PathInfo pathInfo, int index) {
	Object obj = pathInfo.getContentObject();
	List<Node> nodes = null;
	if (obj instanceof List<?>)
		nodes = (List<Node>) obj;
	else if (obj instanceof Path) {
		nodes = new ArrayList<Node>();
		Iterator<Node> it = ((Path)obj).nodes().iterator();
		while(it.hasNext())
			nodes.add(it.next());
		pathInfo.setContentObject(nodes);
	}
	return nodes.get(index).id();
}
Example #3
Source File: City2City.java    From Getaviz with Apache License 2.0 5 votes vote down vote up 
private void setBuildingSegmentAttributesPanels(Long segment) {
	Path path = connector.executeRead(
		"MATCH p = (parent)-[:CONTAINS]->(s)-[:VISUALIZES]->(e) WHERE ID(s) = " + segment + " RETURN p").next().get(
		"p").asPath();
	Node relatedEntity = path.end();
	long parent = path.start().id();
	List<Node> childsM = connector.executeRead(
		"MATCH (s)-[:CONTAINS]->(child)-[r:VISUALIZES]->(e:Method) WHERE ID(s) = " + parent +
			" AND (e:Field OR e:Method)" + " AND NOT (e)<-[:DECLARES]-(:Enum) RETURN e").stream().map(s -> s.get("e").asNode()).collect(Collectors.toList());
	List<Node> childsA = connector.executeRead(
			"MATCH (s)-[:CONTAINS]->(child)-[r:VISUALIZES]->(e:Field) WHERE ID(s) = " + parent +
				" AND NOT (e)<-[:DECLARES]-(:Enum) RETURN e").stream().map(s -> s.get("e").asNode()).collect(Collectors.toList());
	int areaUnit;
	if (classElementsMode == ClassElementsModes.ATTRIBUTES_ONLY) {
		areaUnit = childsM.size();
	} else {
		areaUnit = childsA.size();
	}
	double width;
	double length;
	if (areaUnit <= 1) {
		width = widthMin;
		length = widthMin;
	} else {
		width = widthMin * areaUnit;
		length = widthMin * areaUnit;
	}
	int index = 0;
	int effectiveLineCount = relatedEntity.get("effectiveLineCount").asInt(0);
	while (index < panelHeightTresholdNos.length &&
		effectiveLineCount >= panelHeightTresholdNos[index]) {
		index = index + 1;
	}
	double height = panelHeightUnit * (index + 1);
	connector.executeWrite(
		cypherSetBuildingSegmentAttributes(segment, width, length, height,
			CityUtils.setBuildingSegmentColor(relatedEntity)));
}
Example #4
Source File: City2City.java    From Getaviz with Apache License 2.0 5 votes vote down vote up 
private void setBuildingSegmentAttributesBricks(Long segment) {
	Path path = connector.executeRead(
		"MATCH p = (parent)-[:CONTAINS]->(s)-[:VISUALIZES]->(e) WHERE ID(s) = " + segment + " RETURN p").next().get(
		"p").asPath();
	Node relatedEntity = path.end();
	connector.executeWrite(
		cypherSetBuildingSegmentAttributes(segment, brickSize, brickSize, brickSize,
			CityUtils.setBuildingSegmentColor(relatedEntity)));
	CityUtils.setBuildingSegmentColor(relatedEntity);
}
Example #5
Source File: GetTest.java    From neo4j-versioner-core with Apache License 2.0 5 votes vote down vote up 
@Test
public void shouldGetCurrentPathByGivenEntity() {
    // This is in a try-block, to make sure we close the driver after the test
    try (Driver driver = GraphDatabase
            .driver(neo4j.boltURI(), Config.build().withEncryption().toConfig()); Session session = driver.session()) {
        // Given
        session.run("CREATE (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'})");
        session.run("MATCH (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'}) CREATE (e)-[:HAS_STATE {startDate:localdatetime('1988-10-27T00:00:00')}]->(s)");
        Node entity = session.run("MATCH (e:Entity) RETURN e").single().get("e").asNode();
        Node state = session.run("MATCH (s:State) RETURN s").single().get("s").asNode();

        // When
        StatementResult result = session.run("MATCH (e:Entity) WITH e CALL graph.versioner.get.current.path(e) YIELD path RETURN path");

        Path current = result.single().get("path").asPath();
        Iterator<Relationship> relsIterator = current.relationships().iterator();
        Map<String, Object> rels = new HashMap<>();
        while (relsIterator.hasNext()) {
            Relationship support = relsIterator.next();
            rels.put(support.type(), support);
        }

        // Then
        assertThat(current.contains(entity), equalTo(true));
        assertThat(rels.containsKey(Utility.CURRENT_TYPE), equalTo(true));
        assertThat(current.contains(state), equalTo(true));
    }
}
Example #6
Source File: GetTest.java    From neo4j-versioner-core with Apache License 2.0 5 votes vote down vote up 
@Test
public void shouldGetAllStateNodesByGivenEntity() {
    // This is in a try-block, to make sure we close the driver after the test
    try (Driver driver = GraphDatabase
            .driver(neo4j.boltURI(), Config.build().withEncryption().toConfig()); Session session = driver.session()) {
        // Given
        session.run("CREATE (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'})");
        session.run("MATCH (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'}) CREATE (e)-[:HAS_STATE {startDate:localdatetime('1988-10-27T00:00:00')}]->(s)");
        session.run("MATCH (e)-[hs:HAS_STATE]->(s) CREATE (e)-[:HAS_STATE {startDate: localdatetime('1988-10-26T00:00:00'), endDate: hs.startDate}]->(:State{key:'oldState'})");
        session.run("MATCH (s1:State {key:'oldState'}), (s2:State {key:'initialValue'}) CREATE (s1)<-[:PREVIOUS {date: localdatetime('1988-10-26T00:00:00')}]-(s2) ");
        Node entity = session.run("MATCH (e:Entity) RETURN e").single().get("e").asNode();
        Node stateNew = session.run("MATCH (s:State {key:'initialValue'}) RETURN s").single().get("s").asNode();
        Node stateOld = session.run("MATCH (s:State {key:'oldState'}) RETURN s").single().get("s").asNode();

        // When
        StatementResult result = session.run("MATCH (e:Entity) WITH e CALL graph.versioner.get.all(e) YIELD path RETURN path");

        Path current = result.single().get("path").asPath();
        Iterator<Relationship> relsIterator = current.relationships().iterator();
        Map<String, Object> rels = new HashMap<>();
        while (relsIterator.hasNext()) {
            Relationship support = relsIterator.next();
            rels.put(support.type(), support);
        }

        // Then
        assertThat(current.contains(entity), equalTo(true));
        assertThat(current.contains(stateNew), equalTo(true));
        assertThat(rels.containsKey(Utility.PREVIOUS_TYPE), equalTo(true));
        assertThat(current.contains(stateOld), equalTo(true));
    }
}
Example #7
Source File: GetTest.java    From neo4j-versioner-core with Apache License 2.0 5 votes vote down vote up 
@Test
public void shouldGetAllStateNodesByGivenEntityWithOnlyOneCurrentState() {
    // This is in a try-block, to make sure we close the driver after the test
    try (Driver driver = GraphDatabase
            .driver(neo4j.boltURI(), Config.build().withEncryption().toConfig()); Session session = driver.session()) {
        // Given
        session.run("CREATE (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'})");
        session.run("MATCH (e:Entity {key:'immutableValue'})-[:CURRENT {date:localdatetime('1988-10-27T00:00:00')}]->(s:State {key:'initialValue'}) CREATE (e)-[:HAS_STATE {startDate:localdatetime('1988-10-27T00:00:00')}]->(s)");
        Node entity = session.run("MATCH (e:Entity) RETURN e").single().get("e").asNode();
        Node stateNew = session.run("MATCH (s:State {key:'initialValue'}) RETURN s").single().get("s").asNode();

        // When
        StatementResult result = session.run("MATCH (e:Entity) WITH e CALL graph.versioner.get.all(e) YIELD path RETURN path");

        Path current = result.single().get("path").asPath();
        Iterator<Relationship> relsIterator = current.relationships().iterator();
        Map<String, Object> rels = new HashMap<>();
        while (relsIterator.hasNext()) {
            Relationship support = relsIterator.next();
            rels.put(support.type(), support);
        }

        // Then
        assertThat(current.contains(entity), equalTo(true));
        assertThat(current.contains(stateNew), equalTo(true));
    }
}
Example #8
Source File: City2City.java    From Getaviz with Apache License 2.0 4 votes vote down vote up 
private void setDistrictAttributes(Path districtPath) {
	String color = PCKG_colors.get(districtPath.length() - 1);
	connector.executeWrite(
		String.format("MATCH (n) WHERE ID(n) = %d SET n.height = %f, n.color = '%s'", districtPath.end().id(),
			heightMin, color));
}