JSF Newbie: sending params to data provider from text field

[chris gar]

I have worked this tutorial on populating a data table with a drop down. I understand how the processValueChange method for a drop down works. It takes the selected value (an id) associated with the display String (a name) and sets the id as a parameter for the data provider: then refreshes the data provider like so

      public void personIdDD_processValueChange(ValueChangeEvent event) {
        try {
            getSessionBean1().getTripRowSet().setObject(1, personIdDD.getSelected());
            tripDataProvider.refresh();
        } catch (Exception e) {
            error("Cannot switch to person " +
                    personDataProvider.getValue(
                    "PERSON.PERSONID"));
            log("Cannot switch to person " +
                    personDataProvider.getValue(
                    "PERSON.PERSONID"), e);
        }

    }

So when you select a person from the dropdown, the table is populated with their info.

I want to do the same thing - but instead of using a dropdown, I want to use a text field and a button. I've tried creating the nameField_processValueChange but I can't seem to set the parameter for the data provider. I keep getting sql errors when I try to refresh because I'm not getting the value to pass in as the parameter.

Does the button change things? What methods to I need to override? Should my parameter changing code go on the button? or the text field? or the form?

Can someone please provide a little direction?

[chris gar]

Ahh! I figured it out.

The text field can be treated the same as the drop down. The textField_processValueChange needs an implementation. My problem was: I was trying to pass an int. I needed to pass a Long.

[Tim Holloway]

Umm, you do know that the Value Change event contains the "before" and "after" values, don't you? You don't need to go digging for the new value.