select tag and indexed properties

["Beuck, Torsten" <To...@otto.de>]

Hi.

i have an ActionForm:

public class MyForm extends ActionForm {
  ...
  public Collection getOptions(int index) { ... }
  public Collection getLabels(int index) { ... }
  public String[] getSelection(int index) { ... }
  public void setSelection(int index, String[] value) { ... }
  ...
}

and the following JSP code:

<html:form action="testForm.do">
<logic:iterate name="test" property="list" id="current" indexId="ix">
  ...
  <html:select multiple="true" name="form" property='<%= "selection["+ix+"]"
%>' size="3">
    <html:options name="form" property='<%= "options["+ix+"]" %>'

                  labelName="form" labelProperty='<%= "labels["+ix+"]" %>'/>
  </html:select>
  ...
</logic.iterate>
</html:form>

('test' is a bean that the list to iterate over; 'form' is the name of the
MyForm instance)

Everthing works fine but the setSelection(...) method. When i submit the
form i get:

java.lang.IllegalArgumentException: argument type mismatch
        at java.lang.reflect.Method.invoke(Native Method)
        at
org.apache.struts.util.PropertyUtils.setIndexedProperty(PropertyUtils.java:8
33)
        at
org.apache.struts.util.PropertyUtils.setIndexedProperty(PropertyUtils.java:7
85)
        at
org.apache.struts.util.PropertyUtils.setNestedProperty(PropertyUtils.java:90
2)
        at
org.apache.struts.util.PropertyUtils.setProperty(PropertyUtils.java:932)
        at org.apache.struts.util.BeanUtils.populate(BeanUtils.java:509)
        at
org.apache.struts.util.RequestUtils.populate(RequestUtils.java:772)
        at
org.apache.struts.action.ActionServlet.processPopulate(ActionServlet.java:20
61)
        at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1563)
        at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)

I have to define a method

  public void setSelection(int index, String value) { ... }

to get it working, but then i only get the first selected entry in the list
and not all. Is this a bug or did i something wrong?

Torsten Beuck
OTTO Versand
Abteilung IT-EW-WQ
Wandsbeker Str. 3 - 7
22172 Hamburg

Tel.:  +49 40 6461 5351
Fax:   +49 40 6464 5351
eMail: torsten.beuck@otto.de