Okay - some needed input first:
- addComments is called inside the constructor of a Panel.
- FooCommentComparator sorts on a java.util.Date field inside of
FooComment
- FooComment has a user, date, and message field
- For some reason the panel shows the comments sorted by the comment's
message field
private void addComments() {
List<FooComment> comments = getComments();
IDataProvider dataProvider = new ListDataProvider(comments);
DataView commentPanels = new DataView("fooPanels", dataProvider,
PAGE_LENGTH) {
private static final long serialVersionUID =
-3952819461137344195L;
protected void populateItem(Item item) {
item.add(new FooCommentPanel("commentPanel",
item.getModel()));
}
};
add(commentPanels);
PagingNavigator navigator = new PagingNavigator("navigator",
commentPanels);
add(navigator);
// if there aren't too few comments hide the navigator
if (comments.size() <= PAGE_LENGTH) {
navigator.setVisible(false);
}
}
private List<FooComment> getComments() {
List<FooComment> list = new ArrayList<FooComment>(((Foo)
CommentFormPanel.this.getModelObject()).getComments());
Collections.sort(list, new FooCommentComparator());
if (list == null) {
list = new ArrayList<FooComment>();
}
int size = list.size();
if (LOG.isDebugEnabled()) {
String singPlur = size == 1 ? " comment." : " comments.";
LOG.debug("Foo has " + size + singPlur);
}
return list;
}
-----Original Message-----
From: Igor Vaynberg [mailto:[EMAIL PROTECTED]
Sent: Friday, March 07, 2008 2:07 PM
To: [email protected]
Subject: Re: Sort order in DataView with ListDataProvider
paste your code
-igor
On Fri, Mar 7, 2008 at 2:03 PM, Michael Mehrle <[EMAIL PROTECTED]>
wrote:
> I'm passing a ListDataProvider when creating a DataView that shows
rows
> of comments. Each comment has a name, a date, and a message. I am
> creating the ListDataProvider with an ArrayList, which also has been
> sorted with a Comparator on the date.
>
> For whatever reason on the final page my comments are however sorted
> alphabetically by the message. What am I doing wrong here? I thought
> that sorting the list passed into the ListDataProvider was
sufficient.
>
> Any help would be appreciated.
>
> Michael
>
>
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