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Cassandra / Eclipse - Unable to establish a connection

So, I use Cassandra in my project, and I need to establish a connection between Eclipse and the database. I tried using the JDBC compatible driver that I found on code.google.com, but I get this exception:

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: row index out of range: -1

This is my code:

package cassandrasampledriver;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import org.apache.cassandra.cql.jdbc.DriverResolverException;
import org.apache.cassandra.cql.jdbc.InvalidUrlException;

 public class CassandraDriver 
{

 public static void main(String[] args)  {
     Connection con = null;
     String KS = "cassandrademocql";

     try 
     {
         Class.forName("org.apache.cassandra.cql.jdbc.CassandraDriver");
         con = DriverManager.getConnection("jdbc:cassandra://localhost:9160/" + KS);

        Statement stmt = con.createStatement();
        String query = "DROP KEYSPACE cassandrademocql;";
        ResultSet result = stmt.executeQuery(query);

     }


     catch (ClassNotFoundException e) {
         e.printStackTrace();
     }
     catch (SQLException e) {
         e.printStackTrace();
     }
 }
}

Thanks in advance:)

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1 answer

, cql ( 1.1.2 cassandra 1.2. JDK6 . , ? , , ResultSet result = stmt.executeQuery(query);, java.sql.SQLNonTransientException.

, Cassandra, , API Cassandra, .

JAR,

  • -Cassandra-1.2.0-rc1-SNAPSHOT.jar
  • -Cassandra-clientutil-1.2.0-RC1-SNAPSHOT.jar
  • -Cassandra--1.2.0-RC1-SNAPSHOT.jar
  • cassandra-jdbc-1.1.2.jar libthrift-0.9.0.jar log4j-1.2.16.jar
  • log4j-over-slf4j-1.7.2.jar selenium-server-standalone-2.21.0.jar
  • slf4j-api-1.7.2.jar slf4j-simple-1.7.2.jar

, :

package cassandrasampledriver;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class CassandraDriver {
    public static void main(String[] args)  {
         Connection con = null;
         String KS = "cassandrademocql";

         try 
         {
             Class.forName("org.apache.cassandra.cql.jdbc.CassandraDriver");
             con = DriverManager.getConnection("jdbc:cassandra://localhost:9160/" + KS);

            Statement stmt = con.createStatement();
            String query = "DROP KEYSPACE cassandrademocql;";

            // Because you are droping the KS this will not return anything
            // So the result set will be null and a java.sql.SQLNonTransientException exception will be thrown every time.
            ResultSet result = stmt.executeQuery(query);

         }


         catch (Exception ex) {
             ex.printStackTrace();
         }
     }
}
+3

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