Igor,
You are cheating :) groupsiterator should take another iterator, not list
for the constructor. In this case implementation of findnext is not obvious
since you cannot rewind the original iterator.
Alex
On 2/19/07, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
thats easy. you have a list of rows that is primarily sorted on the group.
so just do something like this (rough pseudocode)
class groupsiterator implements iterator {
private final list rows;
private string group;
private int idx;
public groupsiterator(list rows) {
this.rows=rows;
findnext();
}
public boolean hasnext() { return group!=null; }
public void next() {
string curr=group;
findnext();
return curr;
}
private void findnext() {
String nextgroup=null;
for (int idx;idx<rows.size();idx++) {
if (!rows.get(i).getgroup().equals(group)) {
nextgroup=rows.geT(i).getgroup();
break;
}
}
return nextgroup;
}
}
think of it as a filtered iterator :)
-igor
On 2/19/07, Alexei Sokolov <[EMAIL PROTECTED]> wrote:
>
> Igor,
>
> In this case outer repeater will have to iterate over groups, and I
> don't know how to iterate over groups. I can iterate over every record and I
> can detect when there is a group boundary.
>
> Alex
>
> On 2/19/07, Igor Vaynberg <[EMAIL PROTECTED] > wrote:
> >
> > you would use two repeaters, one inside the other
> >
> > one for outputting group header and footer
> > and the other one inside that one to output the rows in between.
> >
> > -igor
> >
> >
> > On 2/19/07, Alexei Sokolov <[EMAIL PROTECTED]> wrote:
> >
> > > Hello,
> > >
> > > I'm sorry if this subject was discussed before... if so please point
> > > me in the right direction. Here is my problem:
> > >
> > > I'm using IDataProvider interface from wicket extensions package to
> > > load set of data from database. The data has the following format:
> > >
> > > group1, field11, field12, field13, field14
> > > group1, field21, field22, field23, field24
> > > group1, field31, field32, field33, field34
> > > ...
> > > groupN, fieldN1, fieldN2, fieldN3, fieldN4
> > >
> > > Now, what I want to show is this:
> > >
> > > group1 header
> > > group1 row1
> > > group1 row2
> > > ...
> > > group1 rowM
> > > group1 footer
> > > ...
> > > groupN header
> > > groupN row1
> > > ...
> > > groupN rowK
> > > groupN footer
> > >
> > > How do I do this if markup for group header and group footer is
> > > different from each row's markup?
> > >
> > > Thank you,
> > > Alex
> > >
> > >
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