Sorry, I am completely confused.
OKay, here is my JSP:
[code]
<h:selectManyListbox
binding="#{fileManagementBean.dataFile}" size="7" >
<f:selectItems
value="#{fileManagementBean.dataFileItems}"/>
</h:selectManyListbox>
[/code]
In my backing bean, I have changed String[] dataFile
to SelectItem[] dataFile.
<f:selectItems> cannot bind to UISelectMany? The
dataFileItems is of UISelectMany type in my backing
bean. What should I do?
In your code provided:
<f:selectItems
value="#{fileManagementBean.listOfSelectItems}/>
How do I do it?
--- Bruno Aranda <[EMAIL PROTECTED]> wrote:
> Your code is not ok. You are binding the faces
> components to wrong
> types: h:selectManyListbox cannot be bound to
> String[] and
> f:selectItems cannot be bound to an instance of
> UISelectMany....
>
> The best pattern here is to pass an Array/List of
> SelectItem objects
> to the value of your f:selectItems component, like
> this:
>
> <h:selectManyListbox
> value="#{fileManagementBean.dataFile}">
> <f:selectItem
> value="#{fileManagementBean.listOfSelectItems}/>
> </h:selectManyListbox>
>
> And also note that to have some values selected when
> the page is
> loaded you have to use the @value attribute.
>
> Regards,
>
> Bruno
>
> 2005/10/11, Caroline Jen <[EMAIL PROTECTED]>:
> > I used the UISelectItem to set its value to the
> > SelectItem (I have many SelectItme). Then, I
> added
> > each UISelectItem to the UISelectMany . When I
> > displayed a list box, I got the runtime error:
> >
> > "IllegalArgumentException: argument type mismatch"
> >
> > In my JSP, I create a list box for multiple
> > selections:
> >
> > [code]
> > <h:selectManyListbox
> > binding="#{fileManagementBean.dataFile}" size="7"
> >
> > <f:selectItems
> > value="#{fileManagementBean.dataFileItems}"/>
> > </h:selectManyListbox>
> > [/code]
> >
> > Therefore, the "dataFileItems" is of type
> UISelectMany
> > that has elements of type UISelectItem. The
> multiple
> > selections that users make will be in a String
> array:
> > String[] dataFile. Did I mess up anything here?
> My
> > backing bean code is like:
> >
> > [code]
> > .....
> > .....
> > public class FileManagementBean
> > {
> > private String[] dataFile;
> > private UISelectMany dataFileItems;
> >
> > public FileManagementBean()
> > {
> > dataFileItems = new
> UISelectMany();
> > UISelectItem item = new
> UISelectItem();
> >
> > SelectItem file = new SelectItem(
> "file1", "Data
> > File No. 1");
> > item.setValue( file );
> > dataFileItems.getChildren().add(
> item );
> > file = new SelectItem( "file2",
> "Data File No. 2");
> > item.setValue( file );
> > dataFileItems.getChildren().add(
> item );
> > .....
> > .....
> > }
> >
> > public String[] getDataFile() {
> > return dataFile;
> > }
> >
> > public void setDataFile( String[] dataFile
> ) {
> > this.dataFile = dataFile;
> > }
> >
> > public UISelectMany getDataFileItems() {
> > return dataFileItems;
> > }
> > }
> > [/code]
> >
> >
> >
> >
> > __________________________________
> > Yahoo! Mail - PC Magazine Editors' Choice 2005
> > http://mail.yahoo.com
> >
>
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