Using XTDB from Java

In Java, you can talk to a running XTDB node using standard Java JDBC tooling, using XTDB’s Postgres wire-compatibility.

Install

To install the Postgres driver, add the following dependency to your Maven pom.xml:

<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->

<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>42.7.4</version>
</dependency>

Or, for Gradle:

implementation("org.postgresql:postgresql:42.7.4")

Connect

Once you’ve started your XTDB node, you can use the following code to connect to it:

import java.sql.DriverManager;
import java.sql.SqlException;

public class XtdbHelloWorld {

  // This is using relatively raw JDBC - you can also use standard connection pools
  // and JDBC abstraction libraries.

  public static void main(String[] args) throws SqlException {
    try (var connection =
           DriverManager.getConnection("jdbc:postgresql://localhost:5432/xtdb", "xtdb", "xtdb");
         var statement = connection.createStatement()) {

      statement.execute("INSERT INTO users RECORDS {_id: 'jms', name: 'James'}, {_id: 'joe', name: 'Joe'}");

      try (var resultSet = statement.executeQuery("SELECT * FROM users")) {
        System.out.println("Users:");

        while (resultSet.next()) {
          System.out.printf("  * %s: %s%n", resultSet.getString("_id"), resultSet.getString("name"));
        }
      }
    } catch (SQLException e) {
      e.printStackTrace();
      throw e;
    }
  }
}

/* Output:

Users:
  * jms: James
  * joe: Joe
*/

Notes:

• XTDB currently ignores the database, username and password arguments.