a few years back we had a similar scenario of something called a WKT
(wellKnownText class) which is a class containing an array of values (in this
case LAT/LONG )
List WKTArray<WKT> = new Array(12);
then inside the loop..
for(int i=0;i<WKTArray.size();i++)
{
wkt=WKTArray.next();
Longitude=wkt[0]
Latitude=wkt[1];
}
my understanding of arrays represented by [][] is that is a flat array
any supplied index uses array arithmetic to determine the correct index into
the array e.g. assume this declaration and this population scenario
int [][]foo;
foo[0][0]; //would resolve to 0th entry
foo[0][1]; //would resolve to 1 entry
foo[0][2]; //would resolve to 2 entry
foo[1][0]; //would resolve to 1*3+0 entry
foo[1][2]; //would resolve to 1*3+2 entry or the 5th entry
the same principal applies to OGNLStack which is a stack of n number of
elements pushed onto the stack
does this conform to your understanding?
Martin Gainty
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> Date: Tue, 20 Oct 2009 11:04:33 -0600
> Subject: OGNL - Multi-dimensional Array
> From: [email protected]
> To: [email protected]
>
> Hello everyone,
>
> I had a question regarding multi-dimensional arrays and how they are handled
> by OGNL (struts2).
>
> I have the following snippet in my JSP:
>
> ...
> <input type="text" name="dataCollection[0][0]" id="data00" class="..."
> maxLength="1" size="1"/>
> <input type="text" name="dataCollection[0][1]" id="data01" class="..."
> maxLength="1" size="1"/>
> ...
>
> On the Action side I have a class variable declared at the top with a
> corresponding setter:
>
> ...
> private String[][] dataCollection;
> ...
> public void setDataCollection(String[][] dataCollection)
> {
> this.dataCollection = dataCollection;
> }
> ...
>
> I haven't had much difficulty handling the output of a two-dimensional array
> such as this, but am unable to figure out the right way of handling this as
> input. I am using struts 2.0.14.
>
> Thanks for your assistance.
>
> Daniel Stephenson
> [email protected]
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