Connect the Java driver to your database
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This driver doesn’t support the vector data type. DataStax recommends CQL drivers only for Serverless (Non-Vector) databases, existing applications that previously used a CQL-based driver, or if you plan to exclusively use CQL. It is possible to use CQL drivers for non-vector data in Serverless (Vector) databases. However, DataStax recommends the Data API and clients for Serverless (Vector) databases. |
Initialize the Java driver to connect to your database.
Prerequisites
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Download your database’s Secure Connect Bundle (SCB).
Connect
This code imports the necessary classes, sets up a CqlSession with an SCB, authenticates credentials, and specifies a default keyspace.
import com.datastax.oss.driver.api.core.CqlSession;
import com.datastax.oss.driver.api.core.cql.ResultSet;
import com.datastax.oss.driver.api.core.cql.Row;
import com.datastax.oss.driver.api.core.CqlSessionBuilder;
import com.datastax.oss.driver.api.core.cql.PreparedStatement;
import com.datastax.oss.driver.api.core.data.CqlVector;
import com.datastax.oss.driver.api.core.type.codec.TypeCodecs;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
public class VectorTest {
public static void main(String[] args) {
// Initialize the Java driver
String keyspace = "default_keyspace";
CqlSessionBuilder builder = CqlSession.builder();
builder.withCloudSecureConnectBundle(Paths.get(System.getenv("ASTRA_DB_SECURE_BUNDLE_PATH")));
builder.withAuthCredentials("token", System.getenv("ASTRA_DB_APPLICATION_TOKEN"));
builder.withKeyspace(keyspace);
try (CqlSession session = builder.build()) {
int v_dimension = 5;
// ...
}
}
}See the Java quickstart for details on how to add dependencies, connect to a Serverless (Vector) database, create a table and vector-compatible SAI (Storage-Attached Index), load data, and perform a similarity search.
