doubleselct in struts

[dips pandey]

the example given
<s:doubleselect label="doubleselect test1" name="menu" list="{'fruit','other'}" doubleName="dishes" doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" />

has only two values in the first list that is fruit and other what if i have 10 items in the first list how should i write the

doubleList="top == 'fruit' ? {'apple', 'orange'} : {'monkey', 'chicken'}" />

part for that example..

and if a value is selected from the second list another combo box or a text box should be displayed according to the value selected.
PLEASE HELP..

[Rajkumar Kathiresan]

You need to construct your logic based on ternary operator. It will be more complicated when the first list size increase. Still I provide a solution for your problem.

 <s:doubleselect  label="doubleselect test1" name="menu" list="{'Fruit','Sports','Pass time'}" doubleName="dishes" 
     doubleList=" top != 'Sports' ? top != 'Other' ? {'apple', 'orange'} 
     				: {'Movie', 'Music'}:{'Cricket','Football'}" /> 

but the other way to use the doubleselect (its called OGNL method)

 <s:set name="optionList" 
     value="#{
         'Fruit': {'Apple', 'Orange', 'Grape'},
         'Sports': {'Cricket', 'Football'},
         'Pass time':{'Movie','Music'}
         }" />
	<s:doubleselect label="OGNL Dbl select" 
	name="server1" list="#optionList.keySet()" 
	doubleName="server2" doubleList="#optionList[top]" />

But very simple way is

optionMap.put("Fruit", new ArrayList<String>(Arrays.asList("Apple", "Orange", "Grape")));
optionMap.put("Sports", new ArrayList<String>(Arrays.asList("Cricket", "Football")));
optionMap.put("Pass time", new ArrayList<String>(Arrays.asList("Music","Movies")));

Create a optionMap as a LinkedHashMap (because it have sorted order) in your action and use it.

<s:doubleselect label="Language" 
		name="language1" list="optionMap.keySet()" 
		doubleName="language2" doubleList="optionMap.get(top)" />

Hope its solve your problem. Let me know if you need any clarification.