Cascading Combo Box

I have a page with 2 cascading Single Once Choice (SOC). Price list SOC and Product list SOC. The requirement is that a customer ID will be sent into the page via url parameters which will filter the dropdown value for Price List. Price list SOC will drive what the Product list dropdown values are. The model design is as follows
* Price List VO with a view criteria for customer ID
* Product List VO with a view criteria for PriceList ID
* A MainVO that uses both PriceList VO and Product List VO with 2 VA (Price List ID and Product List ID) and 2 LOVs PriceListVO1 and ProductListVO1
We used the LOVs to create 2 SOCs in the page with partial trigger setting. We create an AM method to receive the value from the URL param and parse it to determine the customer id and set the PriceList view criteria. We are using a taskflow that actually receives the url values and calls the AM method to process it and set the PriceList VO and then pass the flow control to the page with SOCs.
We were able to make the following work
* Taskflow is able to receive the values from url and call the AM method
* AM method executes the logic to determine customer ID and is able to set the Price List VO customer ID and execute Price List VO query. I used VO.getrow count to check the row count and notice that the VO is correctly set
But when the Taskflow passes the control to the pages with cascading SOCs it is not working. The PriceList SOC does not have any values indicating that the VA PriceListVO1 which is based on PriceList VO does not have any rows indicating that the criteria is not set.
I dont know what I am doing wrong. I tried to programmatically access the VA - PriceListVO1 in the same AM method and set the Viewcriteria to CustomerID execute the query but the result is the same. When the taskflow is passing the control to page the PriceList VO criteria are all removed.
Kndly help
I am using Jdeveloper 11.1.1.5.0
Edited by: user4220874 on Nov 19, 2011 6:38 AM

HI,
If you use pageFlowScope use that to pass parameter instead UPL passing.
Hopes following links will helpful to adf cascading lov
http://blogs.oracle.com/shay/entry/got_to_love_cascading_lovs_in
http://andrejusb.blogspot.com/2008/12/cascading-lovs-in-oracle-adf-11g-update.html

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Parameter query or cascading combo boxes

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Hi,
>>
I need to filter the choice of contacts based on location and group
Is this best accomplished by cascading combo boxes?
I have tried the cascading combo boxes but so far have not been able to get them to work.
<<
In this case, I will suggest you using the Combo Box control which has the build-in support on cascading feature.
And what do you mean by “not been able to get them work”? I did a quick test and it worked as expected.
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Jeffrey
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I have copied and edited to the best of my ability several options but keep getting errors, mostly illegal character on line...
I do not have LifeCycle, merely Adobe Acrobat IX (and a trial version of Acrobat XI PRO) and the extent of my knowledge ends at placing fields, text, etc. . .
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<UserControl x:Class="CCIS.View.Case.vBoxPetitioner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:v="clr-namespace:CCIS.View.Case"
xmlns:vm="clr-namespace:CCIS.ViewModel.Case"
mc:Ignorable="d"
d:DesignWidth="300"
d:DesignHeight="200">
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<DataTemplate DataType="{x:Type vm:vmPetitioner}">
<v:vPetitioner Margin="0,2,0,0" />
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<Hyperlink Command="{Binding Path=AddPetitionerCommand}">Add Petitioner</Hyperlink>
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Imports Microsoft.VisualBasic
Imports System.Collections.ObjectModel
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''' <summary>
''' ViewModel of an individual Email
''' </summary>
Public Class vmPetitioner
Inherits vmParty
''' <summary>
''' The Email object backing this ViewModel
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''' Initializes a new instance of the EmailViewModel class.
''' </summary>
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Get
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Imports Microsoft.VisualBasic
Imports System
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'Public MustOverride ReadOnly Property Model() As tblAdvocate
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End If
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End If
Return Nothing
End Function
End Class
End Namespace
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<UserControl x:Class="CCIS.View.Case.vPetitioner"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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<Grid.ColumnDefinitions>
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</Grid>
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The problem, presumably, seems to be is that the binding path "PetitionerLookup" of the ItemSource of the Combo box in the view vPetitioner exists in a different ViewModel vmCase which serves as an ObservableCollection for MainViewModel. Therefore,
what I need to Know is how to route the binding path if it exists in a different ViewModel?
Sir, I look forward to your early reply bringing a workable solution to the problem I face.
Warm Regards,
Arun

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     pane.add(mortgageTerm);
     pane.add(thirdRow);
     pane.add(interestLabel);
     pane.add(interestRate);
     pane.add(fourthRow);
     pane.add(paymentLabel);
     pane.add(monthlyPayment);
     monthlyPayment.setEnabled(false);
     pane.add(fifthRow);
     pane.add(calculateButton);
     pane.add(clearButton);
     pane.add(exitButton);
     pane.add(sixthRow);
     pane.add(textarea); //adds texaarea to frame
     pane.add(displayArea);
     setContentPane(pane);
     setVisible(true);
     //Adds Listener to buttons
     calculateButton.addActionListener(this);
     clearButton.addActionListener(this);
     exitButton.addActionListener(this);
     mortgageTerm.addActionListener(this);
     interestRate.addActionListener(this);
public void actionPerformed(ActionEvent event) {
     Object command = event.getSource();
     JComboBox mortgageTerm = (JComboBox)event.getSource();
     String termYear = (String)mortgageTerm.getSelectedItem();
if (command == calculateButton) //calculates mortgage payment
     int year = Integer.parseInt(mortgageTerm.getText());
     double rate = new Double(interestRate.getText()).doubleValue();
     double mortgage = new Double(mortgageAmount.getText()).doubleValue();
     double interest = rate /100.0 / 12.0;
     double monthly = mortgage *(interest/(1-Math.pow(interest+1,-12.0 * year)));
               NumberFormat myCurrencyFormatter;
               myCurrencyFormatter = NumberFormat.getCurrencyInstance(Locale.US);
               monthlyPayment.setText(myCurrencyFormatter.format(monthly));
     if(command == clearButton) //clears all text fields
               mortgageAmount.setText(null);
               //mortgageTerm.setText(null);
               //interestRate.setText(null);
               monthlyPayment.setText(null);
          if(command == exitButton) //sets exit button
                    System.exit(0);
     public static void main(String[] arguments) {
          MortgageCalculator mor = new MortgageCalculator();

The OP already did this to both JComboBoxes.
mochatay, here is a new actionPerformed method for you to use.
I've improved a few things here and there...
1) You can't just cast the ActionEvent's source into a JComboBox!
What if it was a JButton that fired the event? Then you would get ClassCastExceptions (I'm sure you did)
So check for all options, what the source of the ActionEvent actually was...
2) You can't assume the user will always type in valid data.
So enclose the Integer and Double parse methods in try-catch brakcets.
Then you can do something when you know that the user has entered invalid input
(like tell him/her what a clumsy idiot they are !)
3) As soon as user presses an item in any JComboBox, just re-calculate.
I did this here by programmatically clicking the 'Calculate' button.
Alternatively, you could have a 'calculate' method, which does everything inside the
if(command==calculateButton) if-block.
This will be called when:
a)calculateButton is pressed
b)when either of the JComboBoxes are pressed.
public void actionPerformed (ActionEvent event)
        Object command = event.getSource ();
        if (command == calculateButton) //calculates mortgage payment
            int year = 0;
            double rate = 0;
            double mortgage = 0;
            double interest = 0;
            /* If user has input invalid data, tell him so
            and return (Exit from this method back to where we were before */
            try
                year = Integer.parseInt (mortgageTerm.getSelectedItem ().toString ());
                rate = new Double (interestRate.getSelectedItem ().toString ()).doubleValue ();
                mortgage = new Double (mortgageAmount.getText ()).doubleValue ();
                interest = rate / 100.0 / 12.0;
            catch (NumberFormatException nfe)
                /* Display a message Dialogue box with a message */
                JOptionPane.showMessageDialog (this, "Error! Invalid input!");
                return;
            double monthly = mortgage * (interest / (1 - Math.pow (interest + 1, -12.0 * year)));
            NumberFormat myCurrencyFormatter;
            myCurrencyFormatter = NumberFormat.getCurrencyInstance (Locale.US);
            monthlyPayment.setText (myCurrencyFormatter.format (monthly));
        else if (command == clearButton) //clears all text fields
            /* Better than setting it to null (I think) */
            mortgageAmount.setText ("");
            //mortgageTerm.setText(null);
            //interestRate.setText(null);
            monthlyPayment.setText ("");
        else if (command == exitButton) //sets exit button
            System.exit (0);
        else if (command == mortgageTerm)
            /* Programmatically 'clicks' the button,
            As is user had clicked it */
            calculateButton.doClick ();
        else if (command == interestRate)
            calculateButton.doClick ();
        //JComboBox mortgageTerm = (JComboBox) event.getSource ();
        //String termYear = (String) mortgageTerm.getSelectedItem ();
    }Hope this solves your problems.
I also hope you'll be able to learn from what I've indicated, so you can use similar things yourself
in future!
Regards,
lutha

How to get the values from xml file to java combo box

Hi frens,
I am new to java and xml programming,
Now, i want to have a code of getting the tag values from the xml file
into the swing combo box of java front end.
How can we do that?
any help of code or tutorial or an ebook is a great help for me.
Thank you,
Karthik.
Edited by: Karthik84 on Aug 27, 2008 1:49 AM
Edited by: Karthik84 on Aug 27, 2008 11:29 PM

look at this link
http://www.stylusstudio.com/docs/v2006/d_help30.html
I read sometime back that castor has a tool to do
conversion. You might have a look into casto as well.

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