vladbatushkov

// clean up
MATCH (:City)-[cw:CONNECT_WITH]-(:City)
DELETE cw

// external calls - total
MATCH (c1:City)<-[:FROM]-(:Person)-[]->(c:Call)<-[]-(:Person)-[:FROM]->(c2:City)
WHERE id(c1) > id(c2)
WITH c1.name as from, c2.name as to, count(c) as calls
RETURN sum(calls) as s

vladbatushkov

// algorithm
CALL algo.degree.stream("City", "CONNECT_WITH", { direction: "both", weightProperty: "calls" }) YIELD nodeId, score
RETURN algo.asNode(nodeId).name AS name, score
ORDER BY score DESC

// manual calculation
MATCH (c:City)-[cw:CONNECT_WITH]-(:City)
RETURN c.name as name, SUM(cw.calls) as score
ORDER BY score DESC

vladbatushkov

CALL algo.scc(
  'MATCH (p:Person)-[:FROM]->(:City { name: "Bangkok" }) RETURN id(p) as id',
  'MATCH (p1:Person)-[:OUT]->(:Call)<-[:IN]-(p2:Person) RETURN id(p1) as source, id(p2) as target',
  { write: true, writeProperty: 'communityId', graph:'cypher' })
YIELD communityCount
MATCH (p:Person)-[:FROM]->(:City { name: "Bangkok" })
WITH p.name as name, p.communityId as communityId
RETURN communityId, count(name) as total
ORDER BY total DESC

vladbatushkov

const [scaleValue] = useState(new Animated.Value(1))

const waterAnimation = () => {
  Animated.sequence([
    Animated.timing(scaleValue, { // 1
      toValue: 1.2,
      duration: 1500,
      easing: Easing.linear
    }),
    Animated.timing(scaleValue, { // 2

vladbatushkov

MATCH (n) DETACH DELETE n;
MERGE (org:Organization { name: "StarWars Company", taxid: 111222333 })
       
MERGE (d0:Department { name: "IT" })        
MERGE (d1:Department { name: "Frontend" })      
MERGE (d2:Department { name: "DevOps" })  
MERGE (d3:Department { name: "Website" })

MERGE (luke:Person { name: "Luke Skywalker" })
MERGE (r2d2:Person { name: "R2D2" })

vladbatushkov

Repo:

Flights GitHub Repo

Docker Hub:

Neo4j Flights Image in Docker Hub

Workshop:

vladbatushkov

MATCH p=(a1:Airport { code: "BKK" })-[:FLIES_TO]->(a2:Airport { code: "ARN" })
RETURN p

vladbatushkov

MATCH (o:Organization)-[:CONTAINS]->(d:Department)
RETURN *

MATCH (p:Person)-[:WORK_FOR]->(o:Organization)
RETURN *

MATCH (o:Organization)-[:CONTAINS]->(d:Department)-[:LEAD_BY]->(p:Person)
RETURN d, p

MATCH (p:Project)-[:OWNED_BY]->(d:Department)

vladbatushkov

CALL graphql.idl("type Airline {  code: String!  name: String!  country: String! }");
CALL graphql.schema();

vladbatushkov

{
  Airline(first: 10){
    code
    name
    flights(first: 5) {
      flightNumber
    }
  }
}