Yesterday N. Chen was kind in helping me with question I had concerning
pulling a bean from a Map where the key is an Integer. Sorry, I don't
have the original post here at work so I have to start a new thread.
The solution provided works great if the key in the map is a String, but
I still can't get it to work when the key is an Integer.
For example trying to do the following will work fine if the Map uses a
String "3" for the key, but doesn't work when 3 as an Integer is used
for the key...
<c:set var="laborReport" value='${mapOfLaborReports["3"]}' />
<c:out value="${laborReport.conceptId}"/>
I also have a request variable in scope called "currentLaborReportLevel"
which has as its value an Integer. Ideally I'd like to be able to do as
N. Chen helped me with...
<c:set var="laborReport"
value='${mapOfLaborReports[currentLaborReportLevel]}' />
But this also only seems to work when currentLaborReportLevel is a
String and the mapOfLaborReports keys are stored as Strings.
I understand that there are other ways I can accomplish what I need to
do without using the Map on the page, and I'm leaning towards doing it
that way, but I would be interested to know if this could be done.
Thanks.
The reply and original message which I have a copy of is below...
Date: Wed, 16 Jul 2003 16:50:05 -0700 (PDT)
From: "N. Chen" <[EMAIL PROTECTED]>
To: Tag Libraries Users List <[EMAIL PROTECTED]>
Subject: Re: How to retrieve a value from a Map where key is an Integer
& ..?
I believe you can do (with reportID a variable containing the key)
<:set var="laborReport" value='${mapOfLaborReports[reportID]}'/>
which is very different from (with "reportID" as the key)
<:set var="laborReport" value='${mapOfLaborReports["reportID"]}'/>
so to use 3 as a key
<c:set var="laborReport" value='${mapOfLaborReports["3"]}'/>
nick
On 16 Jul 2003, Rick Reumann wrote:
> There is probably a real easy answer for these two questions, but I
> searching the archives for a while hasn't helped...
>
> 1) I have beans in a map that are stored with integers for the keys.
>
> For testing I can retrive the bean out fine with the key of "test"
> like:
>
> <c:set var="laborReport" value="${mapOfLaborReports.test}"/>
>
> But if I try this with...
>
> <c:set var="laborReport" value="${mapOfLaborReports.3}"/>
>
> I get a parsing error:
>
> 4: tag = 'set' / attribute = 'value': An error occurred while parsing
> custom action attribute "value" with value "${mapOfLaborReports.3}":
> Encountered ".3", expected one of ["}", ".", ">", "gt", "<", "lt",
> "==","eq", "<=", "le", ">=", "ge", "!=", "ne", "[", "+", "-", "*",
> "/","div", "%", "mod", "and", "&&", "or", "||", ":", "("]
>
>
>
> 2) Also, is there a way that I can some how nest my expressions? In
> other words say "test" is the value of a parameter with the name
> "reportID" in scope. Now in the first example I'd like to be able to
> do something like...
>
> <:set var="laborReport" value="${mapOfLaborReports.${reportID}}"/>
>
> (Tied into the first question reportID is an Integer but if need be I
> can make sure it's a String representation of the Integer).
>
>
> Thanks for any help.
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