Tim Teulings wrote:
Hello!
I want to display a property in my *jsp that is of type Collection
(LinkedList) of Collection (LinkedList) of Bean - in principle a two
dimensional matrix of Beans.
I tried to use some code like
<logic:iterate id="categoryList" name="categories"
type="java.util.LinkedList">
X
<logic:iterate id="category" name="categoryList"
type="org.teulings.knowhow.bean.Category">
Y
</logic:iterate>
</logic:iterate>
but this does not work as the second iterate cannot see the iteration
variable of the first iterate (categoryList). Using similar "nested"
tags did not help either. I also look more closer at the "nested"
tutorials but they assume that I buil dmy datastructure all together
based on my beans.
I s there a way to use nested java collections or do I have to fall back
to building my own beans?
Works for me (see sample JSP below). Check your data structure actually
looks the way you think it does (i.e. that it's correctly populated).
L.
<%@ page import="java.util.List"%>
<%@ page import="java.util.LinkedList"%>
<%
String[][] data = new String[][] {
{ "a1", "a2", "a3" },
{ "b1", "b2", "b3" },
{ "c1", "c2", "c3" },
};
List outer = new LinkedList();
for (int i = 0; i < data.length; i++) {
java.lang.String[] strings = data[i];
List inner = new LinkedList();
for (int j = 0; j < strings.length; j++) {
String string = strings[j];
inner.add(string);
}
outer.add(inner);
}
pageContext.setAttribute("outer", outer);
%>
<%@ taglib prefix="logic" uri="http://struts.apache.org/tags-logic"; %>
<logic:iterate id="inner" name="outer">
X
<logic:iterate id="bean" name="inner">
Y ${bean}
</logic:iterate>
<br/>
</logic:iterate>
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