public boolean isNumberThree() { return numericValue == 3; }
Yes, there's some leaky abstractions with method invocations and all
the parameter coercion going on. However, given live class reloading,
creating ad-hoc properties for these comparisons is often more
comparable. Also, instead of "isNumberThree()" it could have semantic
value, as in "isShowExtendedDetails()".
Finally, you can write your own IfEquals component that compares its
two parameters using whatever mechanism works for you.
On Fri, Aug 3, 2012 at 3:34 PM, Paul Stanton <p...@mapshed.com.au> wrote:
> hi all,
>
> originally have an accessor method:
>
> public int getNumericValue()
> {
> return myInteger; // auto-boxes to int
> }
>
> and wanted to use the following if:
>
> <t:if test="numericValue == 3">
>
> however '==' doesn't work, but i know method calls work so i changed to:
>
> public Integer getNumericValue()
> {
> return myInteger; // no boxing
> }
>
> and
> <t:if test="numericValue.equals(3)">
>
> this still didn't work, reason being, tapestry 'coerces' "3" into "new
> Long(3)" and
>
> new Integer(3) .equals(new Long(3))
>
> returns false.
>
> So i've changed to
>
> public Long getNumericValue()
> {
> return new Long(myInteger); // a bit ugly
> }
>
> and
> <t:if test="numericValue.equals(3)">
>
> now works....
>
> SO....................
>
> should tapestry do a better job of
> a) coercing 'primative == primative' and the like
> b) coercing '3' to 'new Integer(3)' when it is preferable
> c) nothing, everything above is as it should be.
>
>
> discuss.......
>
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--
Howard M. Lewis Ship
Creator of Apache Tapestry
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