Mega Code Archive
Get the Cursor Position in a Scrollable Result Set
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import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getConnection();
Statement st = conn
.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
st.executeUpdate("create table survey (id int,name varchar(30));");
st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
st.executeUpdate("insert into survey (id,name ) values (2,null)");
st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
ResultSet rs = st.executeQuery("SELECT * FROM survey");
// Get cursor position
int pos = rs.getRow(); // 0
System.out.println(pos);
boolean b = rs.isBeforeFirst(); // true
System.out.println(b);
// Move cursor to the first row
rs.next();
// Get cursor position
pos = rs.getRow(); // 1
b = rs.isFirst(); // true
System.out.println(pos);
System.out.println(b);
// Move cursor to the last row
rs.last();
// Get cursor position
pos = rs.getRow();
System.out.println(pos);
b = rs.isLast(); // true
// Move cursor past last row
rs.afterLast();
// Get cursor position
pos = rs.getRow();
b = rs.isAfterLast(); // true
rs.close();
st.close();
conn.close();
}
private static Connection getConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
String url = "jdbc:hsqldb:mem:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
}
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