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From: Chris Riesbeck <Chris.Riesbeck@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: JSTL: getting a map's keys
Date: Fri, 23 Mar 2012 12:23:32 -0500
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On 3/22/2012 3:23 PM, Lew wrote:
> Chris Riesbeck wrote:
>> Lew wrote:
>>> Chris Riesbeck wrote:
>>
>> So I don't see how I can have a class such that in the JSP EL I can call
>> a method to get all the keys, and also retrieve data with a key using [].
>
> I was thinking along the lines of this incompletely worked-through notion:
>
>   public class ContactScreenBacker
>   {
>     private final Map<String, Rate>  rates = howeverYouSetItUp();
>     public Map<String, Rate>  getRates() { return Collections.unmodifiableMap(rates); }
>     public Set<String>  getKeys() { return Collections.unmodifiableSet(rates.getKeys(); }
> // ...
>   }
>
> You should be able to use an EL like '#{thingie.rates["Bill"]}'. I
> haven't tried it, but this is what I had in mind.

Yes, that's probably the approach I'll take. Not quite what I'd wanted, 
but close enough and I can't see why it shouldn't work.

Thanks, all.