配置

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Map;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.neo4j.jdbc.Neo4jDriver;
import org.neo4j.jdbc.Neo4jMetadataWriter;

public final class TransactionMetadata {

    private static final Logger LOGGER = Logger.getLogger(TransactionMetadata.class.getPackageName());

    public static void main(String... args) throws SQLException {
        var url = "jdbc:neo4j://:7687";

        var driver = (Neo4jDriver) DriverManager.getDriver(url);
        driver.withMetadata(Map.of("md_from_driver", "v1", "will_be_overwritten", "irrelevant"));

        var properties = new Properties();
        properties.put("user", "neo4j");
        properties.put("password", "verysecret");

        try (
            var con = driver.connect(url, properties)
                .unwrap(Neo4jMetadataWriter.class)
                .withMetadata(Map.of("md_from_connection", "v2", "will_be_overwritten", "xxx"))
                .unwrap(Connection.class);
            var statement = con.createStatement()
                .unwrap(Neo4jMetadataWriter.class)
                .withMetadata(Map.of("md_from_stmt", "v3", "will_be_overwritten", "v4"))
                .unwrap(Statement.class)
        ) {
            try (var result = statement.executeQuery("SHOW TRANSACTIONS YIELD metaData")) {
                while (result.next()) {
                    var metaData = result.getObject("metaData", Map.class);
                    LOGGER.log(Level.INFO, "{0}", metaData);
                }
            }
        }
    }
}

Juli 17, 2024 1:18:16 PM org.neo4j.jdbc.docs.TransactionMetadata main
INFORMATION: {md_from_driver=v1, md_from_connection=v2, md_from_stmt=v3, will_be_overwritten=v4}

jdbc:neo4j://<host>:<port>/<database>?param1=value1&param2=value2

import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

class Configuration {

    void obtainConnection() throws SQLException {

        var url = "jdbc:neo4j://:7687";
        var username = "neo4j";
        var password = "verysecret";
        var connection = DriverManager.getConnection(url, username, password);
    }

}

import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

class Configuration {

    void obtainDriverAndConnection() throws SQLException {

        var url = "jdbc:neo4j://:7687";
        var driver = DriverManager.getDriver(url);

        var properties = new Properties();
        properties.put("username", "neo4j");
        properties.put("password", "verysecret");
        var connection = driver.connect(url, properties);
    }

}

<dependency>
    <groupId>org.neo4j</groupId>
    <artifactId>neo4j-jdbc-tracing-micrometer</artifactId>
    <version>6.5.1</version>
</dependency>

dependencies {
    runtimeOnly 'org.neo4j:neo4j-jdbc-tracing-micrometer:6.5.1'
}

import javax.sql.DataSource;

import org.neo4j.jdbc.Neo4jDataSource;
import org.neo4j.jdbc.tracing.micrometer.Neo4jTracingBridge;

import io.micrometer.tracing.Tracer;

public class TracingExampleSetup {

    DataSource neo4jDataSource() {

        Tracer tracer = Tracer.NOOP; (1)
        var neo4jDataSource = new Neo4jDataSource();
        neo4jDataSource.setUrl("jdbc:neo4j://yourhost:7687");
        neo4jDataSource.setPassword("neo4j");
        neo4jDataSource.setUser("verysecret");
        neo4jDataSource.setTracer(Neo4jTracingBridge.to(tracer)); (2)
        return neo4jDataSource;
    }
}

import java.sql.Connection;
import java.sql.DriverManager;

import org.neo4j.jdbc.Neo4jConnection;
import org.neo4j.jdbc.tracing.micrometer.Neo4jTracingBridge;

import io.micrometer.tracing.Tracer;

public class TracingExampleSetup {

    Connection connection() {

        Tracer tracer = Tracer.NOOP;
        return DriverManager.getConnection("jdbc:neo4j://yourhost:7687", "neo4j", "verysecret")
            .unwrap(Neo4jConnection.class) (1)
            .withTracer(Neo4jTracingBridge.to(tracer));
    }
}