Populating selectOneChoice from database

Hi Everyone .
l am new to JDeveloper and ADF . l need help to populate list of countries from the database to selectOneChoice object using managed bean . The database contains all the countries but l cant load the data into dropdownlist .
Thank you
Khuluza

Hi,
You can use List of values feature in your View Object (VO) with countries table as data source. And select UI Hints as Choice List.
When you drag this VO from data control to faces, you can view the field will be rendered as a choice list.
Thanks.
- LSR

Similar Messages

Want JTree e.g. of populating data from database.

I want ur JTree example of populating data from database, can u plz give me that eg.?
Awaiting 4 ur reply.

Hi,
AFAIK, there is no direct approach to populate a JTree directly from a resultset. However, JTree can use a DOM tree as its model by using the adapter pattern. The procedure to do this is well-documented in the SUN website and the link is provided below. The code to convert a resultset to XML is provided below:
protected void resultSetToXML(OutputStream out,
ResultSet rs,
String stylesheet)
throws IOException, ServletException {
// Create reader and source objects
SqlXMLReader sxreader = new SqlXMLReader();
SqlInputSource sis = new SqlInputSource(rs);
// Create SAX source and StreamResult for transform
SAXSource source = new SAXSource(sxreader, sis);
StreamResult result = new StreamResult(out);
// Perform XSLT transform to get results. If "stylesheet"
// is NULL, then use identity transform. Otherwise, parse
// stylesheet and build transformer for it.
try {
// Create XSLT transformer
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t;
if (stylesheet == null) {
t = tf.newTransformer();
} else {
// Read XSL stylesheet from app archive and wrap it as
// a StreamSource. Then use it to construct a transformer.
InputStream xslstream = _config.getServletContext().
getResourceAsStream(stylesheet);
StreamSource xslsource = new StreamSource(xslstream);
t = tf.newTransformer(xslsource);
// Do transform
t.transform(source, result);
} catch (TransformerException tx) {
throw new ServletException(tx);
The classes SQLXMLReader and other classes used in this example are available in the following java packages.
import java.sql.*;
import javax.sql.DataSource;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.sax.*;
import javax.xml.transform.stream.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import org.xml.sax.helpers.AttributesImpl;
The following is the link that explains how to load a JTree from DOM.
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JAXPDOM6.html
Cheers,
vidyut

How to display data in SelectOneChoice from database?

Hi,
I want to display data in SelectOneChoice component after fetching from database in a bean using Application module implementation class. I have two fields in my bean id and name. I want to display name in choice and in backend i want to play with the id of corresponding selected choice i.e displayed in SelectOneChoice. I am not able to bind the datacontrol with the SelectOneChoice component. I have data in my bean i.e list of id and name fetched from database.

In my app module i have create a method which retruns UserBean in array List .
I dropped that data control on my page as Select One Choice and bind the same.
When i run that page I am able to see user bean object in drop down but when i try to see any specific var error occurs
Code-
<af:selectOneChoice value="#{bindings.return.inputValue}"
label="#{bindings.return.label}"
required="#{bindings.return.hints.mandatory}"
shortDesc="#{bindings.return.hints.tooltip}"
binding="#{backingBeanScope.backing_test12.soc1}"
id="soc1">
<f:selectItems value="#{bindings.return.items}"
binding="#{backingBeanScope.backing_test12.si1}"
id="si1"/>
</af:selectOneChoice>
This code works fine and drop down shows userbean .
But when i change the code it fetch username form bean exception occurs
Changed Code-
<f:selectItems value="#{bindings.return.items.*Username*}"
binding="#{backingBeanScope.backing_test12.si1}"
id="si1"/>
Exception-
*[ServletContext@15368949[app:ADF module:ADF-ViewController-context-root path:/ADF-ViewController-context-root spec-version:2.5]] Servlet failed with Exception*
java.lang.NumberFormatException: For input string: "Username"
*     at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)*
*     at java.lang.Integer.parseInt(Integer.java:449)*
*     at java.lang.Integer.parseInt(Integer.java:499)*
*     at javax.el.ListELResolver.toInteger(ListELResolver.java:373)*
*     at javax.el.ListELResolver.getValue(ListELResolver.java:167)*
*     Truncated. see log file for complete stacktrace*
FYI:- This control wokrs fine when i but this data in table . Not sure about the reason for select choice :(

Populating fields from database values

I have a page being populated from database values. I used the Application Builder Wizard to create the application. One of the fields is displaying on the report, but when I click edit, the value is not there. The field is defined as a float and being displayed as a text item. I have created this Application twice with the same results.
Any ideas?
thanks!
Christie

Thank you for the quick reply!
I turned on the debug, to ensure the automatic fetch
process it on and it is. The edit page has 7
fields, all are being populated except for this one.
I have confirmed it is using the correct database
column and it is replacing the existing value the
same as the other fields.
Any other ideas to what could be going on?You can see each page item assignment in the debug output. Look there to see where the page item is being set, and potentially unset I suppose. The thing to look for here might be page processes that might be interacting with that item.
You could also simply drop the problematic page item and recreate it to see if you can make the value stick.
Earl

Populating JTree from database

Hi experts,
I need some feedbacks about the way i populate my JTree from database, Is there any better alternatives?
If yes, try explain it in detail.. I'm still new in Java.
Sample database table:
|       node_id      |       name      |       parent       |       hasChild      |
|         1          |     garbage     |        null        |           1         |
|         2          |       item      |          1         |           1         |
|         3          |      mouse      |          2         |           0         |
|         4          |       board     |          2         |           0         |
|         5          |       item2     |          1         |           1         |
|         6          |       item3     |          1         |           1         |
|         7          |       pants     |          5         |           0         |
-----------------------------------------------------------------------------------Here's the sample of my code:
//... ResultSet rs = .....
rs.last();
int rowCount = rs.getRow(); //Get the total number of row in database table
rs.beforeFirst();
int i = 0;
int j = 0;
String [] nodeID = new String[rowCount]; //The node ID
String [] parentID = new String[rowCount]; //A pointer to its parent ID
DefaultMutableTreeNode [] node = new DefaultMutableTreeNode[rowCount]; //The node
while(rs.next()) {
     String name = rs.getString("name");
     Boolean bool = rs.getBoolean("hasChild");
     node[i] = new DefaultMutableTreeNode(name,bool);
     parentID[i] = rs.getString("parent");
     nodeID[i] = rs.getInt("node_id") + "";
        //Set as root node when the pointer is null
     if(parentID.equals("null")) {
          rootNode = node[i];
     i++;
for(i=0; i<rowCount; i++) {
     for(j=0; j<rowCount; j++) {
          if(parentID[j].equals(nodeID[i]) && node[i] != null) {
               node[i].add(node[j]);
node[i] = null; //Obligates the parent after finish adding the child (to prevent unnecessary loops)
//... tree = new JTree(rootNode);
Thanks for the trouble,
Regards,
David

The execution time are base on the code i post'ed here.
Average over 30times using Vector = 640048 nanosecond to execute.
Vector<String> nodeID = new Vector<String>();
Vector<DefaultMutableTreeNode> node = new Vector<DefaultMutableTreeNode>();
Vector<String> parentID = new Vector<String>();
rs.last();
int rowCount = rs.getRow();
rs.beforeFirst();
k=0;
while(rs.next()) {
     String name = rs.getString("name");
     Boolean hasChild = rs.getBoolean("hasChild");
     node.addElement(new DefaultMutableTreeNode(name,hasChild));
     nodeID.addElement(rs.getInt("node_id")+"");
     parentID.addElement(rs.getString("parent"));
     if(parentID.elementAt(k).equals("null")) {
          rootNode = node.elementAt(k);
     k++;
i=0;
while(i<rowCount) {
     j=0;
     while(j<rowCount) {
          if(parentID.elementAt(j).equals(nodeID.elementAt(i)) && node.elementAt(j) != null) {
               node.elementAt(i).add(node.elementAt(j));
               if(!node.elementAt(i).getAllowsChildren())
                    node.insertElementAt(null,j);
          j++;
     i++;
}Average over 30times using LinkedList = 95623 nanosecond to execute.
//This section will have a class Nodes
LinkedList<Nodes> gather = new LinkedList<Nodes>();
while(rs.next()) {
     node = new DefaultMutableTreeNode(rs.getString("name"),rs.getBoolean("hasChild"));
     gather.add(new Nodes(rs.getInt("node_id") + "",node,rs.getString("parent")));
for(Nodes findParent : gather) {
     if(findParent.getParentID().equals("null")) {
          findParent.setRoot(findParent.getNode());
          rootNode = findParent.getRoot();
     for(Nodes findChild : gather){
          if(findChild.getParentID().equals(findParent.getNodeID()))
               findParent.getNode().add(findChild.getNode());
}As for the Array method i used from the previous post, the Average code execution time is x3 larger than the vector i used. So please do not use that method.
Note: 1. The code i post can be improved further. 2. Execution time is based on individual computer.
Well, I think i'll stop here. Anyone who wanted to know which method is more efficient currently, here's the answer.
Hope that it helps anyone who have the problem here =).
Edited by: DavidTW on May 23, 2011 3:14 PM
Improved Version : Using for-each loop ( Effective Java, Second Edition, Joshua Bloch, Pg. 210).

Very very urgent. population data from database into dropdownbox

Hi,
i imported a model through ejbs
this is to create new entries into database ,
and my scenerio iso now i need to populate the values that i stored into database thro EJBS in a drop down box of wd application.
plz help me through code ,i am new to java webdynpro...
neede very urgently,
Thanx .
Arjun.G
Message was edited by:
arjun swamy

Hi,
Have a look at these threads
Dropdown by index in table - fetching values from database
Dropdown by index
Kind Regards,
Saravanan K

Populating table from database

Number FoodItem Quantity Price Description
1     Rice     1 bag     5000 Carbohydrate
2     Beans     1 bag     4000 Protein
3     Palm Oil 1 bottle 500 Fats & Oil
i have a table like this in my database,need help in populating my list
with "FoodItem" from the database when my GUI comes up.Also,want to display final result of selection in my table.
'\n'
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.table.*;
import static javax.swing.GroupLayout.Alignment.*;
import java.sql.*;
import java.util.*;
public class Foodtable extends JFrame {
     //private JButton finish,view;
     private JTable table;
     private DefaultTableModel model;
     private JScrollPane pane,pane1;
     private JTextField currentamount,totalamount,qtyfield;
     private JList foodlist;
     private JComboBox box;
     private String[] qtybox={"cup","mudu","bag"};
     private DefaultListModel lm;
     Connection con=null;
     Statement st=null;
     private static ResultSet rs;
     public Foodtable(){
          JPanel p1 = new JPanel();
          p1.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(),"Food List",TitledBorder.CENTER,TitledBorder.TOP));
          p1.setLayout(null);
          p1.setPreferredSize(new Dimension(170,150));
          lm = new DefaultListModel();
          foodlist = new JList(lm);
          pane1 = new JScrollPane(foodlist);
          pane1.setBounds(10,20,148,180);
          p1.add(pane1);
          JLabel qty = new JLabel("Quantity:");
          qty.setBounds(10,210,60,20);
          p1.add(qty);
          qtyfield = new JTextField(5);
          qtyfield.setBounds(65,210,30,20);
          p1.add(qtyfield);
          box = new JComboBox(qtybox);
          box.setBounds(95,210,60,20);
          p1.add(box);
          JPanel p2 = new JPanel();
          p2.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(),"Food Table",TitledBorder.CENTER,TitledBorder.TOP));
           model = new DefaultTableModel();
           model.addColumn("Number");
           model.addColumn("Food Item");
           model.addColumn("Quantity");
           model.addColumn("Price");
           model.addColumn("Description");
          table = new JTable(model);
          pane = new JScrollPane(table);
          pane.setPreferredSize(new Dimension(300,140));
          p2.add(pane);
          JPanel p = new JPanel();
          GroupLayout layout = new GroupLayout(p);
          p.setLayout(layout);
          layout.setAutoCreateGaps(true);
          layout.setAutoCreateContainerGaps(true);
          layout.setHorizontalGroup(layout.createSequentialGroup()
               .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                         .addComponent(p1)
                    .addComponent(p2)
          layout.setVerticalGroup(layout.createSequentialGroup()
               .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                    .addComponent(p1)
                    .addComponent(p2)
          JPanel p4 = new JPanel();
          p4.setLayout(null);
          p4.setPreferredSize(new Dimension(200,30));
          /*finish = new JButton("Finish");
          finish.setBorder(BorderFactory.createEmptyBorder(0,0,0,0));
          finish.setRolloverEnabled(false);
          finish.setBounds(170,20,60,20);
          p4.add(finish);*/
          JLabel currentlabel = new JLabel("Current Amount:");
          currentlabel.setBounds(300,10,100,20);
          p4.add(currentlabel);
          currentamount = new JTextField();
          currentamount.setBounds(395,10,50,20);
          currentamount.setEditable(false);
          p4.add(currentamount);
          JLabel total = new JLabel("Amount Spent:");
          total.setBounds(300,30,100,20);
          p4.add(total);
          totalamount = new JTextField();
          totalamount.setBounds(395,30,50,20);
          totalamount.setEditable(false);
          p4.add(totalamount);
          GroupLayout flayout = new GroupLayout(getContentPane());
          getContentPane().setLayout(flayout);
          flayout.setAutoCreateGaps(true);
          flayout.setAutoCreateContainerGaps(true);
          flayout.setHorizontalGroup(flayout.createSequentialGroup()
               .addGroup(flayout.createParallelGroup(GroupLayout.Alignment.LEADING)
                    .addComponent(p)
                    .addComponent(p4)
          flayout.setVerticalGroup(flayout.createSequentialGroup()
               .addGroup(flayout.createParallelGroup(GroupLayout.Alignment.LEADING)
                    .addGroup(flayout.createSequentialGroup()
                         .addGroup(flayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                              .addComponent(p)
                    .addComponent(p4)
          setSize(640,460);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
     public static void main(String[] arg){
          new Foodtable().setVisible(true);
     public void showRecord(){
          try{
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               con = DriverManager.getConnection("jdbc:odbc:food","","");
               st = con.createStatement();
               rs=st.executeQuery("SELECT*FROM tbl_food");
               while(rs.next()){
                    lm.addElement(rs.getString("food_name"));
          catch(Exception sqle){
               JOptionPane.showMessageDialog(null,"Exception.......\n" + sqle.getMessage() ,"Error Information",JOptionPane.ERROR_MESSAGE);
     /*public void query(){
          try{
               Class.forName("com.mysql.jdbc.Driver");
               con = DriverManager.getConnection("jdbc:mysql://localhost/food?user=password=");
               st = con.createStatement();
               String sql = "SELECT foodlist.food,foodlist.description FROM foodlist";
               rs = st.executeQuery(sql);
               while(rs.next()){
                    lm.addElement(rs.getString(1)+'\n');
          }catch(Exception ee){
               System.out.println(ee);
          finally{
               try{
                    st.close();
                    con.close();
               }catch(Exception ex){ System.err.println(ex);}
     public void actionPerformed(ActionEvent e){
          Object[] value = foodlist.getSelectedValues();
          if(e.getSource()==view){
               query();
          if(e.getSource() == move){
               for(int i=0;i<value.length;i++){
                    String word = (String)value;
                    //String foodclass = rs.getString("foodlist.description");
                    Vector<Object> data = new Vector<Object>();
                    data.addElement(word);
                    data.addElement(qtyfield.getText()+" "+box.getSelectedItem());
                    data.addElement("");
                    //data.addElement("foodclass");
                    model.addRow(data);

This particular forum is about jdbc. Do you have a question about jdbc?
If so then what specifically is it?
If you have questions about GUIs (display, buttons, events, etc) then there are other forums for that.

Jtree examples of populating data from database

I have searched many of the solutions here, but the threads that contain examples of jtree loading from an sql database are not available. Does anyone have a good example of populating a jTree from the database?
Thank You

Hi,
AFAIK, there is no direct approach to populate a JTree directly from a resultset. However, JTree can use a DOM tree as its model by using the adapter pattern. The procedure to do this is well-documented in the SUN website and the link is provided below. The code to convert a resultset to XML is provided below:
protected void resultSetToXML(OutputStream out,
ResultSet rs,
String stylesheet)
throws IOException, ServletException {
// Create reader and source objects
SqlXMLReader sxreader = new SqlXMLReader();
SqlInputSource sis = new SqlInputSource(rs);
// Create SAX source and StreamResult for transform
SAXSource source = new SAXSource(sxreader, sis);
StreamResult result = new StreamResult(out);
// Perform XSLT transform to get results. If "stylesheet"
// is NULL, then use identity transform. Otherwise, parse
// stylesheet and build transformer for it.
try {
// Create XSLT transformer
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t;
if (stylesheet == null) {
t = tf.newTransformer();
} else {
// Read XSL stylesheet from app archive and wrap it as
// a StreamSource. Then use it to construct a transformer.
InputStream xslstream = _config.getServletContext().
getResourceAsStream(stylesheet);
StreamSource xslsource = new StreamSource(xslstream);
t = tf.newTransformer(xslsource);
// Do transform
t.transform(source, result);
} catch (TransformerException tx) {
throw new ServletException(tx);
The classes SQLXMLReader and other classes used in this example are available in the following java packages.
import java.sql.*;
import javax.sql.DataSource;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.sax.*;
import javax.xml.transform.stream.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import org.xml.sax.helpers.AttributesImpl;
The following is the link that explains how to load a JTree from DOM.
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JAXPDOM6.html
Cheers,
vidyut

Populating Fields from Database

Hi everyone,
Need some help from the experts. I have a PDF form that is already connected to a Progress/OpenEdge database through ODBC connection. Here's what I want to happen:
Just as an example, in the database suppose the 'Job' table contained 3 fields: JobID, JobDescription, and CustomerName. When a user enters a job number into a specific PDF form field which corresponds to the JobID field of the database, the form fields in the PDF for Job Description and Customer Name auto-populate with the corresponding information from the database.
Can this be done?
Thanks so much,
Jon

Thank you for the quick reply!
I turned on the debug, to ensure the automatic fetch
process it on and it is. The edit page has 7
fields, all are being populated except for this one.
I have confirmed it is using the correct database
column and it is replacing the existing value the
same as the other fields.
Any other ideas to what could be going on?You can see each page item assignment in the debug output. Look there to see where the page item is being set, and potentially unset I suppose. The thing to look for here might be page processes that might be interacting with that item.
You could also simply drop the problematic page item and recreate it to see if you can make the value stick.
Earl

APEX4: Populating fields from database based on the SelectList value

Hi,
I've a Select List and 4 Text Fields on a form. On selecting a value on the Select List, I've to populate the Text Fields by fetching its values from the database by using the Select List value as the primary key.
How can I do this in APEX 4?
Thanks for the help.
--Hozy

Thank you so much for helping me out.
Yes, it comes from the same table account.
These are the sqls to fetch the 4 values in each dynamic action:
select a.address1 from account a where a.account_id = :P14_ACCOUNT
select a.address2 from account a where account_id = :P14_ACCOUNT
select a.city from account a where a.account_id = :P14_ACCOUNT
select a.postal_code from account a where a.account_id = :P14_ACCOUNT
Right now, I only have one dynamic action for text field P14_BILLING_ADDRESS_1, and even for just one the value is not showing up in it. Please note that when I added for dynamic actions, the the values were showing up in all the 4 text fields before.
Then when I added 4 more dynamic actions for a different Select List (P14_CUSTOMER), but for the same text fields, it all stopped working. And now even a single dynamic action is not working. This is how the sql for next 4 dynamic actions looked like:
select c.address1 from customer c where c.customer_id = :P14_CUSTOMER
select c.address2 from customer c where c.customer_id = :P14_CUSTOMER
select c.city from customer c where c.customer_id= :P14_CUSTOMER
select c.postal_code from customer c where c.customer_id= :P14_CUSTOMER
}

Problem while populating data from database dynamically.

I am having two combo box
First one displays list of table Names
Second one displays list of the corresponding field Names.
Now when the user selects the table name the corresponding field names appear in the second combo box & now when the user selects the field name then the requirement is to get the data of the corressponding field of the table on the screen on the button click.
I want to do this thing dynamically through coding.
My requirement is only the data of those columns that have been queried should appear on the screen whereas other column data should not appear.
Can any body help me out.

I'm not sure if you want to populate the combobox dynamically based on any selected data source.
If so it is kind of tricky, but do-able. You need to write little bit of coding yourself.
First you need to get the Database metadata. For details see
http://java.sun.com/j2se/1.4.2/docs/api/java/sql/DatabaseMetaData.html
where you can get the table names.
Then using the result set metadata of the selected table you can get the column information. For details see
http://java.sun.com/j2se/1.4.2/docs/api/java/sql/ResultSetMetaData.html
If you want to display the data of selected table and column value (statically filled combo box), then it is easy.
you can create your own SQL statement based on the selected tabe and column and set it to the rowset dynamically in the code (may be in the method beforerenderresponse).
- Winston

Populating JSF ListBox from DataBase

Hi,
im new to JSF and i have a problem populating Listboxes with database values.
i have 3 listboxes and the 3 are populated from tables in my database.
I would like to filter the returned(from database) values in the 2nd listbox depending on the value selected in the 1st listox.
I dont know how to do this.
BTW i'm usis Ibatis Abator to map the database.
tnx

Here is what I think you are wanting to do:
1. Have the list box show values from a database table.
2. Have the user make selections. Should the user return to that page later in the session, have the previous selection still selected.
Normally, you would bind the listbox to the database table, as is shown in http://developers.sun.com/prodtech/javatools/jscreator/learning/tutorials/2/databoundcomponents.html. The only reason I can think of for not binding directly to the database table is if there is a possiblity that the database table can change (additions, updates, deletes) during the user's session.
Are you able to emulate the above tutorial using the Postgress database? It might be good to pinpoint whether the problem is with the Postgress driver or with the code you are writing.
By the way, if you use a data provider to access the database, as shown in the tutorial, here is how you iterate through the data
        try {
            myDataProvider.cursorFirst();
            do {
                [build your options list here]
            } while (myDataProvider.cursorNext());
        } catch (Exception ex) {
            error("put your message here" +
                    ex.getMessage());
            log("put your message here: " +
                    ex.getMessage(), ex);
        }You are correct to bind the selected property to a session bean property in order to perserve the user selecitons through the user's s session.

Problem in populating jtable data from database

hi,
i am using JTable to retrieve data from database and show it in table. JTable
is working fine with static data. but while retrieving from databse its giving a NullPointerException at getColumnClass() method. Below is complete source code. plzz help.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.sql.*;
import javax.swing.table.*;
/*jdbc connection class*/
class connect
Connection con;
Statement stat;
public connect()throws Exception
Class.forName("org.postgresql.Driver");
con=DriverManager.getConnection("jdbc:postgresql://localhost/dl","dl","dl");
stat=con.createStatement();
public ResultSet rsf(String rsstr)throws Exception
ResultSet rs=stat.executeQuery(rsstr);
return rs;
public void upf(String upstr)throws Exception
stat.executeUpdate(upstr);
class MyTableModel extends AbstractTableModel
private String[] columnNames = {"name","id","dep","cat","rem","chkout"};
Object[][] data;
public MyTableModel()
try{
connect conn=new connect();
ResultSet rs3=conn.rsf("select * from usertab");
ResultSetMetaData rsmd=rs3.getMetaData();
int col=rsmd.getColumnCount();
int cou=0;while(rs3.next()){cou++;}
data=new Object[cou][col];
System.out.println(cou+" "+col);
ResultSet rs2=conn.rsf("select * from usertab");
int i=0;int j=0;
for(i=0;i<cou;i++)
rs2.next();
for(j=0;j<col;j++)
data[i][j]=rs2.getString(getColumnName(j));
System.out.println(data[0][2]);
}catch(Exception e){System.out.println("DFD "+e);}
        public int getColumnCount() {
            return columnNames.length;
        public int getRowCount() {
            return data.length;
        public String getColumnName(int col) {
            return columnNames[col];
        public Object getValueAt(int row, int col) {
            return data[row][col];
       public Class getColumnClass(int c) {
          return getValueAt(0, c).getClass();
        public boolean isCellEditable(int row, int col) {
            if (col < 2) {
                return false;
            } else {
                return true;
        public void setValueAt(Object value, int row, int col) {
            data[row][col] = value;
            fireTableCellUpdated(row, col);
class MyFrame extends JFrame
public MyFrame()
     setSize(600,500);
     JPanel p1=new JPanel();
     p1.setBackground(new Color(198,232,189));
     JTable table = new JTable(new MyTableModel());
     table.setPreferredScrollableViewportSize(new Dimension(500,200));
     table.setBackground(new Color(198,232,189));
     JScrollPane scrollPane = new JScrollPane(table);
     scrollPane.setBackground(new Color(198,232,189));
     p1.add(scrollPane);
     getContentPane().add(p1);
/*Main Class*/
class test2
     public static void main(String args[])
     MyFrame fr =new MyFrame();
     fr.setVisible(true);
}thanx

hi nickelb,
i had returned Object.class in the getColumnClass() method. But then i
got NullPointerException at getRowCount() method. i could understand that the
main problem is in data[][] object. In all the methods its returning null values as it is so declared outside the construtor. But if i declare the object inside the constructor, then the methods could not recognize the object. it seems i cant do the either ways. hope u understood the problem.
thanx

List of values from Database Adapter - BPM Forms

Hi all,
Can anyone tell me how to get list of values from Database adapter and a ServiceTask.
As example lets say a table has Employee and Department columns.
I want to list down all the Employees in BPM form (Select One List Box) once i provide the department to the Database Adapter.
Is it possible from the DB Adapter?? What will be the variable type?
Thanks,
Nir

Hi DanielAtwood,
Thanks for your reply...
Actually when i send the variable in 'WHERE Clause' in Db Adapter query it will retrieve more than one record as the output.
I want to put that values to a 'SelectOneChoice' component and list down all the values..
First I tried with data control. But i couldn't find the way to pass the value to the variable(in WHERE clause) to the query in data control view.
Thanks,
Nir

How to gather option values from database in jsp

jsp experts
my problem is that i have to populate the optional values that user has to selecet his choice .
we could have done it by :
<optional value="item1">item1
<optional value="item2">item2
</select>
but in our database if new category of item is enlisted then what ??? ,thats why we go for populating the values from fetching from database by simple class & populate values in the optional values.
can any one help about it

Hi Avina,
You need to invoke a method from your jsp file which interacts with the database. If you are following the MVC pattern which segregates the View and Contoller part, invoke the controller jsp from your View using the include tag.
Say this is the View.jsp
// all your initial page include statements --
<%
// all your java code (if necessary)
%>
<jsp:include page="Controller.jsp" >
<jsp:param name="command" value="getOptionList"/>
</jsp:include>

// If you are following my technique, there should be a Controller.jsp which interacts with your database thru some class which you instantiate in this jsp, which invokes some method (that is why i have passed a parameter, so that if u want to make a check you can do so - u may or may not pass the parameters - based on ur requirements).
Code in Controller.jsp:
<%
// MyClass is the class which does the querying into the database.
// obj.getOptions() is a method in that class which returns a Vector
// containing all the options from your database.
// Please ensure that you import the package in this jsp file, so as
// to get the MyClass.class in this jsp.
String getWhat = request.getParameter("command");
if ( getWhat != null && getWhat.equalsIgnoreCase("command") ) {
MyClass obj = new MyClass();
java.util.Vector optionsAvailable = obj.getOptions();
session.setAttribute("Options", optionsAvailable);
%>
-------------- End of Controller.jsp related work ---------------
// Returning back to the code in the View.jsp:
Once the including is over, the control will return to the next line of code in View.jsp. Just retrieve the data from the session:
Continued - View.jsp
<select name="itemsInDB">
<option value="Select"> Select </option>
<%
/* Now you have a vector containing all the options from
your database. */
java.util.Vector vecOptions = (java.util.Vector)
session.getAttribute("Options");
for (int i=0; i<vecOptions.size(); i++) {
%>
<option value="<%=vecOptions.elementAt(i)%>"><%=vecOptions.elementAt(i)%></option>
<%
%>
</select>
Well thats all thats required. Your problem is solved. You will get a list of all the options in your database. Happy Coding

Populating selectOneChoice from database

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