Cameron,
Are you sure that your request attributes are named that way? I read that
as a 3 dimensional table...do you really have that in your page?
If you are getting those request attributes, then I'm stumped, but I'd love
to know the answer :-)
Otherwise...you need a getter/setter for the collection which get s and
sets a collection of "bean" objects. You also need a get method for a
single element in your indexed collection. For example:
public Collection getIps() {return ips;}
public void setIps(ArrayList ips) {this.ips = ips;}
public ItemProperties getIp(int index) {
while (index >= ips.size()) {
ips.add(new ItemProperties());
}
return (ItemProperties)ips.get(index);
}
Nick
"Cameron Hickey"
<[EMAIL PROTECTED] To: "'Struts Users Mailing
List'" <[EMAIL PROTECTED]>
com> cc:
Subject: writing an actionform for
nested indexed properties
08/21/2003 10:00
AM
Please respond to
"Struts Users
Mailing List"
I am trying to write an actionform which will properly handle an array
of indexed properties which look like this:
ip[0].itemPropertys[0].itemPropertyId
ip[0].itemPropertys[0].value
ip[1].itemPropertys[0].itemPropertyId
ip[1].itemPropertys[0].value
etc...
In my Action form, what getters and setters do I need?
This is what I have so far:
public List getIp() { return ip;}
public void setIp(List ipList) {ip = ipList;}
public List getItemPropertys(int idx) {return (List) ip.get(idx); }
public void setItemPropertys(int idx,ItemProperty ipe)
{ip.set(idx,ipe);}
public ItemProperty getItemProperty(int idx, List ipl) {return
(ItemProperty) ipl.get(idx);}
public void setItemProperty(int idx,List ipl, ItemProperty tip)
{ipl.set(idx,tip);}
public String getValue(ItemProperty tip) {return tip.getValue();}
public void setValue(String s, ItemProperty tip) {tip.setValue(s);}
public int getItemPropertyId(ItemProperty tip) {return
tip.getItemPropertyId();}
public void setItemPropertyId(int i, ItemProperty tip)
{tip.setItemPropertyId(i);}
but when I try to submit the form, I get this error:
<ERROR>
java.lang.NullPointerException
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUt
ils.java:497)
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUt
ils.java:410)
at
org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUti
ls.java:729)
at
org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.jav
a:780)
at
org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:793)
at
org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:726)
</ERROR>
which I assume is coming from the fact that I don't have all the right
getters and setters available, since it must be trying to call one that
does not exist (thus the null pointer).
Is this right?
Should I have other getters and setters?
THANKS FOR ANY HELP!!
Cameron
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