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From Chris Pratt <thechrispr...@gmail.com>
Subject Re: Tag iterator and my object container
Date Thu, 12 May 2011 07:25:36 GMT
You could possibly get away with just implementing Iterable instead of
Iterator.  It's a much simpler interface to implement.
  (*Chris*)

On Thu, May 12, 2011 at 12:17 AM, <Matthieu.Marc@ensam.eu> wrote:

> Hi,
>
> Thank you. I implements the iterator interface, and now it is working.
>
> public class SearchResults implements Iterator<SearchResult> {
>
>        private Set<String> keySet = null;
>        private Iterator<String> iterator = null;
>
>        private Set<String> keySet() {
>
>                if (this.keySet == null) {
>                        this.keySet = this.results.keySet();
>                }
>                return this.keySet;
>        }
>
>        private Iterator<String> iterator() {
>
>                if (this.iterator == null){
>                        this.iterator = this.keySet().iterator();
>                }
>                return this.iterator;
>        }
>
>        public SearchResult get(String key) {
>                return this.results.get(key);
>        }
>
>        @Override
>        public boolean hasNext() {
>                return this.iterator().hasNext();
>        }
>
>        @Override
>        public SearchResult next() {
>                String next = this.iterator().next();
>                return this.get(next);
>        }
> }
>
>
> Calls (hasNext() and next()) are done in org.apache.struts2.components.
> IteratorComponent
>
>
> Thanks
>
> Matthieu MARC
>
>
> -----Message d'origine-----
> De : Steven Yang [mailto:kenshin520@gmail.com]
> Envoyé : mardi 10 mai 2011 15:16
> À : Struts Users Mailing List
> Objet : Re: Tag iterator and my object container
>
> you need to implement the Iterator interface
>
> On Tue, May 10, 2011 at 4:14 PM, <Matthieu.Marc@ensam.eu> wrote:
>
> > Hi everybody,
> >
> > I have a container object SearchResults which contains a treeMap of
> > simple object SearchResult.
> >
> > I want to iterate over SearchResults in order to display properties of
> > all SearchResult object
> >
> >        Class SearchResult {
> >                //getter and setter
> >                getDescription();
> >        }
> >
> >        Class SearchResults {
> >              treeMap<String, SearchResult>  resultats;
> >
> >                public Set<String> keyset();
> >                public Iterator<String> iterator();
> >                public SearchResult get(String key);
> >        }
> >
> > My Action class have this getter :
> >
> >        getResultats(){ return (SearchResults)object; };
> >
> > And my JSP look like :
> >
> >        <s:iterator value="resultats">
> >                <s:property value="description" />
> >        </s:iterator>
> >
> >
> > But it is not working, s:iterator tag is not iterating over my
> > SearchResults object using the iterator() method (not called).
> >
> > How must I construct my SearchResults object in order to make the
> > s:iterator tag iterate over it ?
> >
> > Thanks.
> >
> > Matthieu MARC
> >
> > ---
> > Matthieu MARC
> > Responsable du Service Informatique du Centre d'Angers Arts et Métiers
> > ParisTech Tél : 02 41 20 73 61
> >
> >
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> >
> >
>
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