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Commit f417fe1

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Sandbox 🤖fbiville
Sandbox 🤖
authored andcommitted
Updating sandbox graph-data-science
1 parent a1b99cf commit f417fe1

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5 files changed

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5 files changed

+180
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lines changed

‎code/csharp/Example.cs

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// install dotnet core on your system
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// dotnet new console -o .
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// dotnet add package Neo4j.Driver
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// paste in this code into Program.cs
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// dotnet run
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading.Tasks;
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using Neo4j.Driver;
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namespace dotnet {
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class Example {
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static async Task Main() {
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var driver = GraphDatabase.Driver("bolt://<HOST>:<BOLTPORT>",
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AuthTokens.Basic("<USERNAME>", "<PASSWORD>"));
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var cypherQuery =
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@"
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MATCH (c:Person{name:$name})-[r:INTERACTS]->(other)
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RETURN other.name as person
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";
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var session = driver.AsyncSession(o => o.WithDatabase("neo4j"));
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var result = await session.ReadTransactionAsync(async tx => {
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var r = await tx.RunAsync(cypherQuery,
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new { name="Jaime Lannister"});
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return await r.ToListAsync();
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});
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await session?.CloseAsync();
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foreach (var row in result)
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Console.WriteLine(row["person"].As<string>());
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}
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}
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}

‎code/go/example.go

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// go mod init main
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// go run example.go
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package main
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import (
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"fmt"
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"github.com/neo4j/neo4j-go-driver/neo4j" //Go 1.8
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)
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func main() {
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s, err := runQuery("bolt://<HOST>:<BOLTPORT>", "<USERNAME>", "<PASSWORD>")
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if err != nil {
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panic(err)
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}
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fmt.Println(s)
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}
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func runQuery(uri, username, password string) ([]string, error) {
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configForNeo4j4 := func(conf *neo4j.Config) { conf.Encrypted = false }
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driver, err := neo4j.NewDriver(uri, neo4j.BasicAuth(username, password, ""), configForNeo4j4)
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if err != nil {
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return nil, err
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}
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defer driver.Close()
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sessionConfig := neo4j.SessionConfig{AccessMode: neo4j.AccessModeRead, DatabaseName: "neo4j"}
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session, err := driver.NewSession(sessionConfig)
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if err != nil {
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return nil, err
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}
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defer session.Close()
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results, err := session.ReadTransaction(func(transaction neo4j.Transaction) (interface{}, error) {
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result, err := transaction.Run(
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`
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MATCH (c:Person{name:$name})-[r:INTERACTS]->(other)
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RETURN other.name as person
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`, map[string]interface{}{
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"name": "Jaime Lannister",
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})
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if err != nil {
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return nil, err
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}
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var arr []string
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for result.Next() {
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value, found := result.Record().Get("person")
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if found {
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arr = append(arr, value.(string))
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}
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}
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if err = result.Err(); err != nil {
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return nil, err
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}
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return arr, nil
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})
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if err != nil {
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return nil, err
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}
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return results.([]string), err
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}

‎code/java/Example.java

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// Add your the driver dependency to your pom.xml build.gradle etc.
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// Java Driver Dependency: http://search.maven.org/#artifactdetails|org.neo4j.driver|neo4j-java-driver|4.0.1|jar
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// Reactive Streams http://search.maven.org/#artifactdetails|org.reactivestreams|reactive-streams|1.0.3|jar
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// download jars into current directory
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// java -cp "*" Example.java
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import org.neo4j.driver.*;
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import static org.neo4j.driver.Values.parameters;
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public class Example {
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public static void main(String...args) {
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Driver driver = GraphDatabase.driver("bolt://<HOST>:<BOLTPORT>",
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AuthTokens.basic("<USERNAME>","<PASSWORD>"));
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try (Session session = driver.session(SessionConfig.forDatabase("neo4j"))) {
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String cypherQuery =
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"MATCH (c:Person{name:$name})-[r:INTERACTS]->(other)" +
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"RETURN other.name as person";
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var result = session.readTransaction(
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tx -> tx.run(cypherQuery,
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parameters("name","Jaime Lannister"))
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.list());
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for (Record record : result) {
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System.out.println(record.get("person").asString());
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}
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}
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driver.close();
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}
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}
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‎code/javascript/example.js

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// npm install --save neo4j-driver
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// node example.js
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const neo4j = require('neo4j-driver');
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const driver = neo4j.driver('bolt://<HOST>:<BOLTPORT>',
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neo4j.auth.basic('<USERNAME>', '<PASSWORD>'),
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{/* encrypted: 'ENCRYPTION_OFF' */});
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const query =
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`
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MATCH (c:Person{name:$name})-[r:INTERACTS]->(other)
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RETURN other.name as person
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`;
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const params = {"name": "Jaime Lannister"};
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const session = driver.session({database:"neo4j"});
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session.run(query, params)
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.then((result) => {
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result.records.forEach((record) => {
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console.log(record.get('person'));
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});
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session.close();
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driver.close();
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})
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.catch((error) => {
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console.error(error);
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});

‎code/python/example.py

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# pip3 install neo4j-driver
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# python3 example.py
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from neo4j import GraphDatabase, basic_auth
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driver = GraphDatabase.driver(
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"bolt://<HOST>:<BOLTPORT>",
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auth=basic_auth("<USERNAME>", "<PASSWORD>"))
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cypher_query = '''
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MATCH (c:Person{name:$name})-[r:INTERACTS]->(other)
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RETURN other.name as person
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'''
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with driver.session(database="neo4j") as session:
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results = session.read_transaction(
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lambda tx: tx.run(cypher_query,
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name="Jaime Lannister").data())
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for record in results:
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print(record['person'])
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driver.close()

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