Migrate Java driver

Complete the following procedure to migrate your existing DataStax Java driver to a version capable of connecting to Astra DB databases created using DataStax Astra DB.

Prerequisites

Create a database using Astra DB.
Download the secure connect bundle to obtain connection credentials for your Astra DB database.
Get your Client ID and Client Secret by creating your application token for your username and password.

Alternatively, have a teammate provide access to their Astra database.

Procedure

In your existing DSE Java driver code, update dependencies to include the DSE Java driver version that can connect to Astra DB databases.

===DataStax Java driver for Apache Cassandra 4.x

<dependency>
  <groupId>com.datastax.oss</groupId>
  <artifactId>java-driver-core</artifactId>
  <version>4.6.0</version>
</dependency>

DataStax Java driver for Apache Cassandra 3.x

<dependency>
  <groupId>com.datastax.cassandra</groupId>
  <artifactId>cassandra-driver-core</artifactId>
  <version>3.8.0</version>
</dependency>

DSE Java 2.x

<dependency>
  <groupId>com.datastax.dse</groupId>
  <artifactId>dse-java-driver-core</artifactId>
  <version>2.3.0</version>
</dependency>

DSE Java 1.x

<dependency>
  <groupId>com.datastax.dse</groupId>
  <artifactId>dse-java-driver-core</artifactId>
  <version>1.9.0</version>
</dependency>

Optional: To use DSE QueryBuilder, which is a utility used to generate CQL queries programmatically, add the following dependency to your pom.xml file:

<dependency>
  <groupId>com.datastax.dse</groupId>
  <artifactId>dse-java-driver-query-builder</artifactId>
  <version>4.6.0</version>
</dependency>

Modify the connection code to use the Astra DB API. In the CqlSession or Session objects (DseCluster or DseSession objects for DSE), include the path to the secure connect bundle for your Cassandra database (secure-connect-database_name.zip) in the withCloudSecureConnectBundle() method, as shown in the following example.

CqlSession session = CqlSession.builder()
  .withCloudSecureConnectBundle("/path/to/secure-connect-database_name.zip")
  .withAuthCredentials("clientId","clientSecret")
  .withKeyspace("keyspace_name")
  .build())",       "language": "text",       "name": "{company} Java driver for Apache Cassandra 4.x

DataStax Java driver for Apache Cassandra 3.x

Session session = Cluster.builder()
  .withCloudSecureConnectBundle("/path/to/secure-connect-database_name.zip")
  .withAuthProvider(new PlainTextAuthProvider("clientId", "clientSecret"))
  .build()
  .connect("keyspace_name"))

Java 2.x

DseSession session = DseSession.builder()
  .withCloudSecureConnectBundle("/path/to/secure-connect-database_name.zip")
  .withAuthCredentials("clientId", "clientSecret")
  .withKeyspace("keyspace_name")
  .build();

Java 1.x

DseCluster cluster = DseCluster.builder()
  .withCloudSecureConnectBundle("/path/to/secure-connect-database_name.zip")
  .withCredentials("clientId", "clientSecret")
  .build();
DseSession session = cluster.connect("keyspace_name");

If converting from using the open source Cassandra Java driver to the DSE Java driver, ensure that you change Session to DseSession.

Build the project to test the connection.

mvn clean compile exec:java -Dexec.mainClass=YourJavaDriver.java

If successful, the code builds, compiles, and connects to your Cassandra database.