Developer Center

Java
Cypher
[source,cypher]
—-
MATCH (j:JavaVersion)-[rel:INCLUDES]->(f:Feature)-[rel2:BELONGS_TO]->(c:Category {name: "lang"})
WHERE toInteger(j.version) >= 24
RETURN *;
—-

Java
[source,java]
—-
public class App {
    public static void main(String[] args) {
        // Create a new Neo4j driver instance
        try (var driver = GraphDatabase.driver(
                "bolt://localhost:7687",
                AuthTokens.basic("javaversions","javaversions")
        ) {
            driver.verifyConnectivity();

            // Return orders mapped to JavaVersion domain record
            var javaVersions = driver.executableQuery("""
                MATCH (j:JavaVersion)-[rel:INCLUDES]->(f:Feature)-[rel2:BELONGS_TO]->(c:Category {name: "lang"})
   	    WHERE toInteger(j.version) >= 24
   	    WITH j, collect(f.title) as features, c.name as category
   	    RETURN j {.*,
features: features,
category: category} as javaVersion;
                """)
                .execute()
                .records()
                .stream()
                .map(record -> record.get("javaVersion").as(JavaVersion.class))
                .toList();
            for (var javaVersion : javaVersions) {
                System.out.println(javaVersion);
            }
    }

    record JavaVersion(String version,
                    String status,
                    LocalDate gaDate,
        LocalDate eolDate,
        @Relationship("INCLUDES") List features) {
    }

    record Feature(String title,
        @Relationship("BELONGS_TO") Category category) {
    }

    record Category(String name) {
    }
}

JavaScript
const neo4j = require('neo4j-driver');


// Neo4j connection settings - replace with your connection information
const URI = process.env.NEO4J_URI;
const USERNAME = process.env.NEO4J_USERNAME;
const PASSWORD = process.env.NEO4J_PASSWORD;
const DATABASE = process.env.NEO4J_DATABASE;


const AUTH = neo4j.auth.basic(USERNAME, PASSWORD);


// Create the driver
const driver = neo4j.driver(URI, AUTH);


// Run a simple query
async function main() {
   try {
       const result = await driver.executeQuery(
           `
           MATCH (lib:Library)-[:SUPPORTS]->(f:Feature), (lib)-[:BELONGS_TO]->(t:Trend {name: "Edge Ready"})
           RETURN lib.name AS library, f.name AS feature, t.name AS trend
           `,
           {},
           { database: DATABASE }
       );
      
       for (const record of result.records) {
           console.log(record.toObject());
       }
   } catch (error) {
       console.error('Query failed:', error);
   } finally {
       await driver.close();
   }
}
main();

C#
using Neo4j.Driver;

//Create the driver instance
var driverInstance = GraphDatabase.Driver(new Uri("neo4j://127.0.0.1:7687"),
    AuthTokens.Basic("neo4j", "password"));

var queryString = 
@"MATCH (pkg:Package)-[pkgMaintainedBy:MAINTAINED_BY]->(pkgMaintainer:Maintainer{name:'Microsoft'})
MATCH (pkg)-[tWith:TESTS_WITH]->(tPkg:TestPackage)-[tmb:MAINTAINED_BY]->(tm:Maintainer)
WHERE pkgMaintainer.name <> tm.name
RETURN *;";


//Run the Cypher query, supplying it with a target database, 
var results = await driverInstance
    .ExecutableQuery(queryString)
    .WithConfig(new QueryConfig(database:"neo4j"))
    .ExecuteAsync();

foreach (var record in results.Result)
{   
    // Print the ASCII art for each path.
    PrintPathAsAscii(record["path"].As());              
    PrintPathAsAscii(record["testingPath"].As());
    Console.WriteLine("\n");
}

void PrintPathAsAscii(IPath path)
{
    var sb = new StringBuilder();
   
    for (int i = 0; i < path.Nodes.Count; i++)
    {   
sb.Append($"({path.Nodes[i].Labels.FirstOrDefault()}:{path.Nodes[i].Properties["name"]})");

        if (i < path.Relationships.Count)
            sb.Append($"-[:{path.Relationships[i].Type}]->");
    }
    Console.WriteLine(sb.ToString());
}