JComboBox Usage Question

Question

Hi guys,
I have a JClient form which have two JComboBox (State and City). When the State combo box changes it's value, the City combo box's allowable values would change. Both combo boxes are based on database tables. How can I synchronize these two comboboxes, so when the first box changes its' value then the second box will requery the database and display a different set of allowable values?
Regards
Tony

Answer 1

Shailesh,
These are my code. With the LOV binding, the combox are binded to table but the city combo will not refresh it's lists after state combo change the value.
stateCombo.setModel(JUComboBoxBinding.createLovBinding(
panelBinding, stateCombo, "CustomerView", null,
"CustomerViewIter", new String[] {"StateId"}, "StateLookupView",
new String[] {"StateId"}, new String[] {"StateName"}, null, null));
cityCombo.setModel(JUComboBoxBinding.createLovBinding(
panelBinding, cityCombo, "CustomerView", null,
"CustomerViewIter", new String[] {"CityId"}, "CityLookupView",
new String[] {"CityId"}, new String[] {"CityName"}, null, null));
stateCombo.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
cityCombo.repaint();
}); From the datamodel you posted at the beginning, the lovVOname for the second combo should have been CityView1, or in other words you should pick the viewobject that is viewlinked to the master StateVO.
Here's how it works.
Once you select a state in the states vo, the viewlinked collection on the detail changes to reflect all cities for that state. The Lov combo should then 'redraw' it's list as a reaction to the rangeRefreshed event from BC4J for the detail VO.