Example: Sensitive and insensitive ResultSets

The following example shows the difference between sensitive and insensitive ResultSets when rows are inserted into a table.

Note: By using the code examples, you agree to the terms of the Code license and disclaimer information.
import java.sql.*;

public class Sensitive {

    public Connection connection = null;

    public static void main(java.lang.String[] args) {
        Sensitive test = new Sensitive();

        test.setup();
        test.run("sensitive");
        test.cleanup();

        test.setup();
        test.run("insensitive");
        test.cleanup();
    }


    public void setup() {

        try {
            Class.forName("com.ibm.db2.jdbc.app.DB2Driver");
            connection = DriverManager.getConnection("jdbc:db2:*local");

            Statement s = connection.createStatement();
            try {
                s.executeUpdate("drop table cujosql.sensitive");
            } catch (SQLException e) {
                // Ignored.
            }

            s.executeUpdate("create table cujosql.sensitive(col1 int)");
            s.executeUpdate("insert into cujosql.sensitive values(1)");
            s.executeUpdate("insert into cujosql.sensitive values(2)");
            s.executeUpdate("insert into cujosql.sensitive values(3)");
            s.executeUpdate("insert into cujosql.sensitive values(4)");
            s.executeUpdate("insert into cujosql.sensitive values(5)");
            s.close();

        } catch (Exception e) {
            System.out.println("Caught exception: " + e.getMessage());
            if (e instanceof SQLException) {
                SQLException another = ((SQLException) e).getNextException();
                System.out.println("Another:  " + another.getMessage());
            }
        }
    }


    public void run(String sensitivity) {
        try {
            Statement s = null;
            if (sensitivity.equalsIgnoreCase("insensitive")) {
                System.out.println("creating a TYPE_SCROLL_INSENSITIVE cursor");
                s = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                    ResultSet.CONCUR_READ_ONLY);
            } else {
                System.out.println("creating a TYPE_SCROLL_SENSITIVE cursor");
                s = connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
                    ResultSet.CONCUR_READ_ONLY);
            }

            ResultSet rs = s.executeQuery("select * From cujosql.sensitive");

            // Fetch the five values that are there.
            rs.next();
            System.out.println("value is " + rs.getInt(1));
            rs.next();
            System.out.println("value is " + rs.getInt(1));
            rs.next();
            System.out.println("value is " + rs.getInt(1));
            rs.next();
            System.out.println("value is " + rs.getInt(1));
            rs.next();
            System.out.println("value is " + rs.getInt(1));
            System.out.println("fetched the five rows...");

            // Note:  If you fetch the last row, the ResultSet looks
            //        closed and subsequent new rows that are added
            //        are not be recognized.

            // Allow another statement to insert a new value.
            Statement s2 = connection.createStatement();
            s2.executeUpdate("insert into cujosql.sensitive values(6)");
            s2.close();

            // Whether a row is recognized is based on the sensitivity setting.
            if (rs.next()) {
                System.out.println("There is a row now: " + rs.getInt(1));
            } else {
                System.out.println("No more rows.");
            }


        } catch (SQLException e) {
            System.out.println("SQLException exception: ");
            System.out.println("Message:....." + e.getMessage());
            System.out.println("SQLState:...." + e.getSQLState());
            System.out.println("Vendor Code:." + e.getErrorCode());
            System.out.println("-------------------------------------");
            e.printStackTrace();
        }
        catch (Exception ex) {
            System.out.println("An exception other than an SQLException was thrown: ");
            ex.printStackTrace();
        }
    }



    public void cleanup() {
        try {
            connection.close();
        } catch (Exception e) {
            System.out.println("Caught exception: ");
            e.printStackTrace();
        }
    }
}
Related concepts
Example: IBM i5/OS PASE native method for Java
Related tasks
Example: Run the Java Performance Data Converter
Related reference
Example: Internationalization of dates using the java.util.DateFormat class
Example: Internationalization of numeric display using the java.util.NumberFormat class
Example: Internationalization of locale-specific data using the java.util.ResourceBundle class
Example: Access property
Example: BLOB
Example: CallableStatement interface for IBM Developer Kit for Java
Example: Remove values from a table through another statement's cursor
Example: CLOB
Example: Create a UDBDataSource and bind it with JNDI
Example: Create a UDBDataSource, and obtain a user ID and password
Example: Create a UDBDataSourceBind and set DataSource properties
Example: DatabaseMetaData interface for IBM Developer Kit for Java - Return a list of tables
Example: Datalink
Example: Distinct types
Example: Embed SQL Statements in your Java application
Example: End a transaction
Example: Invalid user ID and password
Example: JDBC
Example: Multiple connections that work on a transaction
Example: Obtain an initial context before binding UDBDataSource
Example: ParameterMetaData
Example: Change values with a statement through another statement's cursor
Example: ResultSet interface for IBM Developer Kit for Java
Example: ResultSet sensitivity
Example: Set up connection pooling with UDBDataSource and UDBConnectionPoolDataSource
Example: SQLException
Example: Suspend and resume a transaction
Example: Suspended ResultSets
Example: Test the performance of connection pooling
Example: Test the performance of two DataSources
Example: Update BLOBs
Example: Update CLOBs
Example: Use a connection with multiple transactions
Example: Use BLOBs
Example: Use CLOBs
Example: Use JTA to handle a transaction
Example: Use metadata ResultSets that have more than one column
Example: Use native JDBC and IBM Toolbox for Java JDBC concurrently
Example: Use PreparedStatement to obtain a ResultSet
Create and populate a DB2CachedRowSet
Example: Use the Statement object's executeUpdate method
Examples: JAAS HelloWorld
Example: JAAS SampleThreadSubjectLogin
Sample: IBM JGSS non-JAAS client program
Sample: IBM JGSS non-JAAS server program
Sample: IBM JGSS JAAS-enabled client program
Sample: IBM JGSS JAAS-enabled server program
Examples: IBM Java Secure Sockets Extension
Example: Call a CL program with java.lang.Runtime.exec()
Example: Call a CL command with java.lang.Runtime.exec()
Example: Call another Java program with java.lang.Runtime.exec()
Example: Call Java from C
Example: Call Java from RPG
Example: Use input and output streams for interprocess communication
Example: Java Invocation API
Examples: Use the Java Native Interface for native methods
Example: Use sockets for interprocess communication
Examples: Change your Java code to use client socket factories
Examples: Change your Java code to use server socket factories
Examples: Change your Java client to use secure sockets layer
Examples: Change your Java server to use secure sockets layer