JDBC Driver for SQL/MX Programmer's Reference

// Clob interface example - This technique is suitable when
// the LOB data is already in the app, such as having been
// transferred in a msgbuf.
try {
// insert a second base table row with an empty LOB column
System.out.println("CLOB interface EMPTY LOB insert...");
String stmtSource2 = "insert into clobbase
values (?,EMPTY_CLOB())";
PreparedStatement stmt2
= conn1.prepareStatement(stmtSource2);
stmt2.setInt(1,recKey+1);
stmt2.executeUpdate();
Clob clob = null;
System.out.println("Obtaining CLOB data to
update (EMPTY in this case)...");
PreparedStatement stmt3
= conn1.prepareStatement("select col2
from clobbase where col1 = ? for update");
stmt3.setInt(1,recKey+1);
ResultSet rs = stmt3.executeQuery();
if (rs.next()) clob = rs.getClob(1); // has to be there
// else the base table insert fails
System.out.println("Writing data to previously empty CLOB...");
OutputStream os = clob.setAsciiStream(1);
byte[] bData = k.getBytes();
os.write(bData);
os.close();
conn1.commit();
}
catch (SQLException e) {
e.printStackTrace();
SQLException next = e;
do {
System.out.println("Messge : " + e.getMessage());
System.out.println("Vendor Code : " + e.getErrorCode());
System.out.println("SQLState : " + e.getSQLState());
} while ((next = next.getNextException()) != null);
}
} // main
} // class