A bug in the ResultSet.getString method?
Hi,
I am using a 8.1.6 database with UTF8 character set on a Win2000 machine. I've inserted some Hebrew characters into a table, and have been able to read them back properly using SQL+.
However, when I try to retrieve these values from a simple Java program using the resultSet.getString method (via Oracle JDBC driver 8.1.6) I always get the '?' character for every Hebrew character (English characters work fine). However, if I call the 'getBytes' method of the result set, and create a new String instance from that data, it works fine - help needed!
Thanks...
null
However, if I call the 'getBytes' method of the result set, and create a new String instance from that data, it works fine - help needed!Thanks...
Please show me how to using 'getBytes' method of the result set and create a new string instance from THAT DATA, because this way doesn't work for me. I am converting ZHT16DBT to Unicode, and all I got is ?????.
Please help me if you have any idea. THANKS
null
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Hi everybody,
I'm trying to read some text in Portuguese from a MS-Access database, but the special characters for Portuguese aren't correctly translated by ResultSet.getString(String).
Here's my piece of code:
private static void fetchEquipamentoEstabelecimento()
try
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(
" SELECT Eqp.NumSerie, Eqp.Estabelecimento, Estab.Nome, Estab.Cidade, Eqp.Data, Eqp.LPN " +
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rs.getString("LPN") + " " +
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catch(SQLException ex)
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where the <X> is the greek letter beta. I was expecting a
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I tried replacing
String nome = rs.getString("Nome");
with
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but other strange characters were displayed instead of the a with an accent.
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I'm using:
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When you establish connection to database, try explicitly give instructions about what encoding use your DB, e.g.:
// connection properties
Properties connInfo = new Properties();
connInfo.put("user", username);
connInfo.put("password", password);
connInfo.put("charSet", "Cp1251"); // enter your codepage!!!
// getconnection
Connection db = DriverManager.getConnection(dataurl, connInfo); -
ResultSet getString gets truncated
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Hi!
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@broker_cd code,
@contact_group_id int,
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from
table1 t,
table2 tt,
table3 b,.......
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and .....
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boolean gotResults = false;
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stmt.setInt(4, productID);
stmt.setInt(5, securityTypeID);
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if (rs != null){
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System.out.println("Iterating the resultset");
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We have a method which retrieves values from a result
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works fine in all cases and the result retrieved is
as if the proper type is retrieved and a toString() is
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yyyy-M-d.h.mm. ss. fffffffff
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: jayJay Schmidgall wrote:
We have a method which retrieves values from a result
set by simply doing resultSet.getString(index). This
works fine in all cases and the result retrieved is
as if the proper type is retrieved and a toString() is
done on it, except for Timestamps. For Timestamps, we
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yyyy-M-d.h.mm. ss. fffffffff
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yyyy-MM-dd hh:mm:ss.fffffffff
When we later do Timestamp.valueOf(), it chokes because
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Joe -
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PS: Please respond to my email address of [email protected]
as well.
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null -
Why does JDBC keep connections open even though I close the resultsets?
I attached my program and my output. Please bear with me for the long output. My question here is why do the connections remain even though I closed the resultsets. I need to reuse my prepared statements, but don't want to keep the oracle sessions open. Is this possible? What do I need to do?
If you notice in the program, I have executed the query to find the number of open sessions 5 times.
1) After creating the connections
2) After creating the prepared statements
3) After executing them
4) After getString on the resultSets
5) After closing the resultsets.
And the sessions are still there even is Step 5 :-(
import java.sql.*;
* Title:
* Description:
* Copyright: Copyright (c) 2001
* Company:
* @author
* @version 1.0
public class Test {
String dburl = "jdbc:oracle:thin:@oracle92:1521:oracle92";
String query = "select s.username,s.sid ,s.logon_time, s.serial#,sql.sql_text"+
" from v$session s, v$sqltext sql where sql.address = "+
"s.sql_address and sql.hash_value = s.sql_hash_value "+
"and upper(s.username) like 'KRTEMP%'"+
" order by s.username ,s.sid ,s.serial# ,sql.piece" ;
// String query = "select s.username, s.sid ,s.logon_time, s.status from v$session s where upper(s.username) like 'KRTEMP%'";
public Test(int num) throws Exception {
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection[] con = new Connection[num];
for(int i=0; i<num; i++) {
con[i] = DriverManager.getConnection(dburl, "krtemp", "krtemp");
executeQuery();
PreparedStatement[] ps = new PreparedStatement[num];
for(int i=0; i<num; i++) {
ps[i] = con.prepareStatement("select * from contact");
executeQuery();
ResultSet[] rs = new ResultSet[num];
for(int i=0; i<num; i++) {
rs[i] = ps[i].executeQuery();
executeQuery();
for(int i=0; i<num; i++) {
ResultSetMetaData meta = rs[i].getMetaData();
while(rs[i].next()) {
for(int j=1; j<=meta.getColumnCount(); j++) {
rs[i].getString(j);
executeQuery();
for(int i=0; i<num; i++) {
rs[i].close();
executeQuery();
private void executeQuery() throws Exception {
Connection con = DriverManager.getConnection(dburl, "krtemp", "krtemp");
PreparedStatement ps = con.prepareStatement(query);
ResultSet rs = ps.executeQuery();
ResultSetMetaData meta = rs.getMetaData();
System.out.println("-----");
while(rs.next()) {
for(int i=1; i<=meta.getColumnCount(); i++) {
System.out.print(rs.getString(i));
System.out.print(" ");
System.out.println();
System.out.println("-----");
public static void main(String[] args) throws Exception {
Test test = new Test(5);
The output is
KRTEMP 9 2005-06-27 17:09:30.0 5436 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS WH
ERE PARAMETER ='NLS_
KRTEMP 9 2005-06-27 17:09:30.0 5436 DATE_FORMAT'
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 105 2005-06-27 17:09:30.0 3296 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 153 2005-06-27 17:09:30.0 31065 DATE_FORMAT'
KRTEMP 163 2005-06-27 17:09:30.0 3205 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 163 2005-06-27 17:09:30.0 3205 DATE_FORMAT'
KRTEMP 183 2005-06-27 17:09:30.0 3465 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 183 2005-06-27 17:09:30.0 3465 DATE_FORMAT'
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 256 2005-06-27 17:09:30.0 2718 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:30.0 2718 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:30.0 2718 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:30.0 2718 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS WH
ERE PARAMETER ='NLS_
KRTEMP 9 2005-06-27 17:09:30.0 5436 DATE_FORMAT'
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 105 2005-06-27 17:09:30.0 3296 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 153 2005-06-27 17:09:30.0 31065 DATE_FORMAT'
KRTEMP 163 2005-06-27 17:09:30.0 3205 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 163 2005-06-27 17:09:30.0 3205 DATE_FORMAT'
KRTEMP 183 2005-06-27 17:09:30.0 3465 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 183 2005-06-27 17:09:30.0 3465 DATE_FORMAT'
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 select * from contact
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 select * from contact
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 select * from contact
KRTEMP 163 2005-06-27 17:09:30.0 3205 select * from contact
KRTEMP 173 2005-06-27 17:09:31.0 3922 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 173 2005-06-27 17:09:31.0 3922 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 173 2005-06-27 17:09:31.0 3922 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 173 2005-06-27 17:09:31.0 3922 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 183 2005-06-27 17:09:30.0 3465 select * from contact
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 9 2005-06-27 17:09:30.0 5436 select * from contact
KRTEMP 34 2005-06-26 18:51:01.0 3629 rename tstore to store
KRTEMP 37 2005-06-27 17:09:25.0 4209 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 37 2005-06-27 17:09:25.0 4209 DATE_FORMAT'
KRTEMP 74 2005-06-27 17:09:26.0 17625 select appId from profile_application_tabl
e wher
KRTEMP 74 2005-06-27 17:09:26.0 17625 e appName=:1 and appVersion=:2
KRTEMP 83 2005-06-27 17:09:25.0 1771 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS W
HERE PARAMETER ='NLS_
KRTEMP 83 2005-06-27 17:09:25.0 1771 DATE_FORMAT'
KRTEMP 105 2005-06-27 17:09:30.0 3296 select * from contact
KRTEMP 111 2005-06-27 17:09:25.0 4878 SELECT VALUE FROM NLS_INSTANCE_PARAMETERS
WHERE PARAMETER ='NLS_
KRTEMP 111 2005-06-27 17:09:25.0 4878 DATE_FORMAT'
KRTEMP 153 2005-06-27 17:09:30.0 31065 select * from contact
KRTEMP 163 2005-06-27 17:09:30.0 3205 select * from contact
KRTEMP 183 2005-06-27 17:09:30.0 3465 select * from contact
KRTEMP 191 2005-06-27 17:09:26.0 5438 select appId from profile_application_tabl
e wher
KRTEMP 191 2005-06-27 17:09:26.0 5438 e appName=:1 and appVersion=:2
KRTEMP 204 2005-06-27 17:09:32.0 1478 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 204 2005-06-27 17:09:32.0 1478 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 204 2005-06-27 17:09:32.0 1478 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 204 2005-06-27 17:09:32.0 1478 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 232 2005-06-27 17:09:31.0 5893 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 232 2005-06-27 17:09:31.0 5893 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 232 2005-06-27 17:09:31.0 5893 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 232 2005-06-27 17:09:31.0 5893 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.piece
KRTEMP 256 2005-06-27 17:09:31.0 2783 select s.username,s.sid ,s.logon_time, s.s
erial#,sql.sql_text fr
KRTEMP 256 2005-06-27 17:09:31.0 2783 om v$session s, v$sqltext sql where sql.ad
dress = s.sql_address
KRTEMP 256 2005-06-27 17:09:31.0 2783 and sql.hash_value = s.sql_hash_value and
upper(s.username) like
KRTEMP 256 2005-06-27 17:09:31.0 2783 'KRTEMP%' order by s.username ,s.sid ,s.s
erial# ,sql.pieceWhy do the connections stay open? Because you haven't closed them.
You answered your own question: obviously closing the ResultSet is NOT the same thing as closing the connection.
When you do a query, you want to get the connection, statement, and result set, load the data from the result set into an object or data structure, and then immediately close them all again in reverse order of creation. You want to keep the scope as narrow as possible. You want to use a connection pool to keep the cost of obtaining a connection down. You should leave caching of the PreparedStatements to the JDBC driver.
% -
Need help Take out the null values from the ResultSet and Create a XML file
hi,
I wrote something which connects to Database and gets the ResultSet. From that ResultSet I am creating
a XML file. IN my program these are the main two classes Frame1 and ResultSetToXML. ResultSetToXML which
takes ResultSet & Boolean value in its constructor. I am passing the ResultSet and Boolean value
from Frame1 class. I am passing the boolean value to get the null values from the ResultSet and then add those
null values to XML File. When i run the program it works alright and adds the null and not null values to
the file. But when i pass the boolean value to take out the null values it would not take it out and adds
the null and not null values.
Please look at the code i am posing. I am showing step by step where its not adding the null values.
Any help is always appreciated.
Thanks in advance.
============================================================================
Frame1 Class
============
public class Frame1 extends JFrame{
private JPanel contentPane;
private XQuery xQuery1 = new XQuery();
private XYLayout xYLayout1 = new XYLayout();
public Document doc;
private JButton jButton2 = new JButton();
private Connection con;
private Statement stmt;
private ResultSetToXML rstx;
//Construct the frame
public Frame1() {
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
try {
jbInit();
catch(Exception e) {
e.printStackTrace();
//Component initialization
private void jbInit() throws Exception {
//setIconImage(Toolkit.getDefaultToolkit().createImage(Frame1.class.getResource("[Your Icon]")));
contentPane = (JPanel) this.getContentPane();
xQuery1.setSql("");
xQuery1.setUrl("jdbc:odbc:SCANODBC");
xQuery1.setUserName("SYSDBA");
xQuery1.setPassword("masterkey");
xQuery1.setDriver("sun.jdbc.odbc.JdbcOdbcDriver");
contentPane.setLayout(xYLayout1);
this.setSize(new Dimension(400, 300));
this.setTitle("Frame Title");
xQuery1.setSql("Select * from Pinfo where pid=2 or pid=4");
jButton2.setText("Get XML from DB");
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
catch(java.lang.ClassNotFoundException ex) {
System.err.print("ClassNotFoundException: ");
System.err.println(ex.getMessage());
try {
con = DriverManager.getConnection("jdbc:odbc:SCANODBC","SYSDBA", "masterkey");
stmt = con.createStatement();
catch(SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(ActionEvent e) {
jButton2_actionPerformed(e);
contentPane.add(jButton2, new XYConstraints(126, 113, -1, -1));
//Overridden so we can exit when window is closed
protected void processWindowEvent(WindowEvent e) {
super.processWindowEvent(e);
if (e.getID() == WindowEvent.WINDOW_CLOSING) {
System.exit(0);
void jButton2_actionPerformed(ActionEvent e) {
try{
OutputStream out;
XMLOutputter outputter;
Element root;
org.jdom.Document doc;
root = new Element("PINFO");
String query = "SELECT * FROM PINFO WHERE PID=2 OR PID=4";
ResultSet rs = stmt.executeQuery(query);
/*===========This is where i am passing the ResultSet and boolean=======
===========value to either add the null or not null values in the file======*/
rstx = new ResultSetToXML(rs,true);
} //end of try
catch(SQLException ex) {
System.err.println("SQLException: " + ex.getMessage());
======================================================================================
ResultSetToXML class
====================
public class ResultSetToXML {
private OutputStream out;
private Element root;
private XMLOutputter outputter;
private Document doc;
// Constructor
public ResultSetToXML(ResultSet rs, boolean checkifnull){
try{
String tagname="";
String tagvalue="";
root = new Element("pinfo");
while (rs.next()){
Element users = new Element("Record");
for(int i=1;i<=rs.getMetaData().getColumnCount(); ++i){
tagname= rs.getMetaData().getColumnName(i);
tagvalue=rs.getString(i);
System.out.println(tagname);
System.out.println(tagvalue);
/*============if the boolean value is false it adds the null and not
null value to the file =====================*/
/*============else it checks if the value is null or the length is
less than 0 and does the else clause in the if(checkifnull)===*/
if(checkifnull){
if((tagvalue == null) || tagvalue.length() < 0 ){
users.addContent((new Element(tagname).setText(tagvalue)));
else{
users.addContent((new Element(tagname).setText(tagvalue)));
else{
users.addContent((new Element(tagname).setText(tagvalue)));
root.addContent(users);
out=new FileOutputStream("c:/XMLFile.xml");
doc = new Document(root);
outputter = new XMLOutputter();
outputter.output(doc,out);
catch(IOException ioe){
System.out.println(ioe);
catch(SQLException sqle){Can someone please help me with this problem
Thanks. -
How to get the values from the resultset???
I have a problem with this code given below,
i am executing an sql query which return a union of values from two tables.
the problem here is how do i read the values from the resultset.
here is the code....
package com.webserver;
import java.sql.*;
public class UnionDemo{
public static void main(String args[]){
Connection connection =null;
Statement statement =null;
ResultSet rs =null;
try{
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
connection = DriverManager.getConnection("jdbc:oracle:thin:@:1521:ORCL","scott","tiger");
statement = con.createStatement();
rs = statement.executeQuery("(select tablename from node where appid=432) union (select tablename from uomnode where appid=432)");
ResultSetMetaData rsmd = rs.getMetaData();
int numberOfColumns = rsmd.getColumnCount();
while (rs.next()){
System.out.println(rs.getString(1));
// instead of rs.getString(1) I also used rs.getString("tablename") but of no success....
}//end of while
}catch(Exception exp){
exp.printStackTrace();
finally{
try{
if (rs!=null) rs.close();
if (statement!=null) statement.close();
if (con!=null) con.close();
}catch(Exception exp1){
exp1.printStackTrace();
}//end of finally
}//end of main
}//end of class
when i execute this program i get an oracle error ORA-01009
which says (java.sql.SQLException: ORA-01009: missing mandatory parameter)
can anyone help to retrieve the values from this resultset...
thanx[cut]
i am executing an sql query which return a union of
values from two tables.
the problem here is how do i read the values from the
resultset.[cut]
When the error occours?
1) Executing query ?
2) Retrieving the field from the resultSet ?
3) ecc. ?
BTW, first of all, try to execute the query removing the parenthesis
of the two select statement. I know that there are some problem
with the oracle jdbc driver about them.
Hope it helps. -
Open cursors are NOT closed only by closing the ResultSet or Statement
I've realised that the open cursors are only closed by closing the connection.
In my example code I have for-loop with a vector of table-names. For every table-name I start a query to retrieve metainformation (row-size, column-names). Although I close the ResultSet (which automatically closes the PreparedStatement/Statement) I reached after the 150th loop a max-cursor-exception (ora-01000) ?!
It seems that there is only the workaround to close and re-open the connection at the end of the for-loop. Which is performance-side pretty bad :-(.
Is there really no other solution?
Besides: does anyone know WHY the statement.close() also closes the ResultSet?? I think this is a bad design (hence to tight dependency between both classes). What if the garbage collector closes the statement (and hence to the JDOC the statement.close()-method also closes the ResultSet)? For example if a method uses a local Statement and returns a ResultSet (and the Statement-garbage is collected), then the ResultSet would cause an exception?!
Thanks for the help in advance
TaiI've realised that the open cursors are only closed by
closing the connection.Or by closing the Statement!
In my example code I have for-loop with a vector of
table-names. For every table-name I start a query to
retrieve metainformation (row-size, column-names).
Although I close the ResultSet (which automatically
closes the PreparedStatement/Statement) I reached
after the 150th loop a max-cursor-exception
(ora-01000) ?!Closing the ResutSet does not automatically close the PreparedStatement/Statement.
>
It seems that there is only the workaround to close
and re-open the connection at the end of the for-loop.
Which is performance-side pretty bad :-(.
Is there really no other solution?
Just explicitly close the PreparedStatement/Statement!
Besides: does anyone know WHY the statement.close()
also closes the ResultSet?? You need to think of a resultset as a live connection to the database.
Consider SELECT * FROM ABIGTABLE, it would be inefficient to populate the Resultset with all of the rows (could even eat up all memory) so the first n rows are returned ( n = Statement.getFetchSize() ) and the next n rows are returned as needed.
I think this is a bad
design (hence to tight dependency between both
classes). What if the garbage collector closes the
statement (and hence to the JDOC the
statement.close()-method also closes the ResultSet)?
For example if a method uses a local Statement and
returns a ResultSet (and the Statement-garbage is
collected), then the ResultSet would cause an
exception?!You should use a statment and resultset, read all your data into a collection or a CachedRowSet (http://www.javaworld.com/javaworld/jw-02-2001/jw-0202-cachedrow.html) then close the statment as soon as possible. Never return a resultset form your data tier: that is tight coupling between the tiers of your application! -
Deleting an extra column in the resultset of genericsearch page
Hello E-Commerce Experts,
we have a requirement where we need to delete a column in the resultset of the quicksearch trasactions in the genericsearch page.
In order to hide this column we placed a condition in the action class from where we are getting the contents in the column.
Now, we are unable to see the contents in the column but we are getting an empty column.
As the genericsearch page gets genereted dynamically,we are unable to place any condition on that extra column.
Can anyone suggest how to prevent this column from appearing on the screen. Do we need to set any parameters or anything.
Thanks and regards,
venkatesh Saini.Hi Venkatesh,
You do not need to modify Action class for just hiding Trash column.
Put below lines of code as I have suggested in *genericsearch.jsp* file you will able to hide *Trash* column without modifying Action class.
You need to do 2 things to achieve your goal.
First remove Header cell for Trash column and then remove trash icon cell from each row.
First Search *<%-- // +++++++++++++++ RESULT LIST START +++++++++++++ --%>* comment.
1) First Hide cell from Header Row.
<% if ( ! "hidden".equals(listheader.getType())) { %>
<% if ( listheader.getWriteUnderProperty() == null || listheader.getWriteUnderProperty().length() <= 0 || baseui.isAccessible) { %>
<% if ( ! firstPty) { %>
</th>
<% }
firstPty = false;
%>
<% //Custom Line
if (!(ui.writeResultListHeader(listheader) == "" || ui.writeResultListHeader(listheader) == null)){ //Custom line
%> //custom Line
<th scope="col" <%=ui.getTabIndex(true)%>>
<%=ui.writeResultListHeader(listheader)%>
<% }%> //Custom Line
<% } else { %>
<br /><%=ui.writeResultListHeader(listheader)%>
<% } %>
<% } %>
2) Now Remove Trash cell from row. Below code with close <TD> tag properly
<% if ( (! isWriteUnderProperty)) { %>
<% if((iconPath == null) || (iconPath == "")){%> // Custom line
<td <%=ui.writeResultTitlePerTD(rowfields)%> <%=ui.getTabIndex(true)%> <%=(iconPath !=null && iconPath.length() > 0 ? "style=\"text-align: center\"": "")%>>
<% } else {%> // Custom Line
</td>
<%}%> //Custom Line
<% } else { %>
<br />
<% } %>
3) Now hide Cell with Trash icon.
<% if (iconPath != null && iconPath.length() > 0) { %>
<% if((iconPath == null) || (iconPath == "")){%> //Custom Line
< imge src="<%=iconPath%>" alt="<%=outField.getString("ICONTITLE")%>" border="<%=outField.getString("ICONBORDER")%>" width="<%=outField.getString("ICONWIDTH")%>" height="<%=outField.getString("ICONHIGHT")%>" />
<% } %> //Custom Line
<% } else { %>
<%=ui.writeResultlistValue(rowfields , fieldValue)%>
<% } %>
I have written //Custom Line where I have added it in standard code.
I have tested on my local and working fine.
Let me know if you face any problem.
eCommerce Developer -
How to find out the value a method is returning using JDI
Is it possible to find out what value (not simply the type) a method returns. I'd have thought there would be some access under MethodExitEvent but I can't find anything.
Is it possible to find out what value (not simply the
type) a method returns.There's currently no way to access a method's return value in
method exit events
This is Bug Id: 4195445
Synopsis: JVMDI spec: Add return value to Method Exit Event
http://developer.java.sun.com/developer/bugParade/bugs/4195445.html
See also:
http://developer.java.sun.com/developer/bugParade/bugs/4813046.html
This will be fixed in the next major release of J2SE (code named 'tiger')
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