This chapter covers all the important classes in Cassandra.
Cluster
This class is the main entry point of the driver. It belongs to com.datastax.driver.core package.
Methods
| S. No. | Methods and Description |
|---|---|
| 1 | Session connect()It creates a new session on the current cluster and initializes it. |
| 2 | void close()It is used to close the cluster instance. |
| 3 | static Cluster.Builder builder()It is used to create a new Cluster.Builder instance. |
Cluster.Builder
This class is used to instantiate the Cluster.Builder class.
Methods
| S. No | Methods and Description |
|---|---|
| 1 | Cluster.Builder addContactPoint(String address)This method adds a contact point to cluster. |
| 2 | Cluster build()This method builds the cluster with the given contact points. |
Session
This interface holds the connections to Cassandra cluster. Using this interface, you can execute CQL queries. It belongs to com.datastax.driver.core package.
Methods
| S. No. | Methods and Description |
|---|---|
| 1 | void close()This method is used to close the current session instance. |
| 2 | ResultSet execute(Statement statement)This method is used to execute a query. It requires a statement object. |
| 3 | ResultSet execute(String query)This method is used to execute a query. It requires a query in the form of a String object. |
| 4 | PreparedStatement prepare(RegularStatement statement)This method prepares the provided query. The query is to be provided in the form of a Statement. |
| 5 | PreparedStatement prepare(String query)This method prepares the provided query. The query is to be provided in the form of a String. |