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Posted to users@myfaces.apache.org by Tilo Gau <no...@gmx.de> on 2007/08/15 13:41:09 UTC
[Trinidad] SelectManyShuttle NullPointerException and Understanding
Hi,
I have quite a trouble to unterstand the SelectManyShuttle and get it running.
First, how I understood the SelectManyShuttle so far:
<tr:selectManyShuttle leadingHeader="Not Selected" trailingHeader="Selected" value="#{detailsBean.selected}">
<f:selectItems value="#{detailsBean.all}" />
</tr:selectManyShuttle>
The value in <tr:selectManyShuttle /> is a List of indexes of the selected items.
The value in <f:selectItems /> is a List of SelectItems with index, label and description of all items.
Second, how I implemented the according methods:
public List<SelectItem> getAll() {
List<SelectItem> list = new ArrayList<SelectItem>();
for(Iterator it = getAllItems().iterator();it.hasNext();){
Item item = (Item)it.next();
list.add(new SelectItem(item .getId(), item .getLabel(), item .getDescription()));
}
return list;
}
public List<Integer> getSelected(){
List<Integer> list = new ArrayList<Integer>();
for(Iterator it = getSelectedItems().iterator();it.hasNext();){
Item item = (Item)it.next();
list.add(item.getId());
}
return list;
}
Third, what error I got, when I tried to show the page:
java.lang.NullPointerException
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer$ShuttleList.getOndblclick(SelectManyShuttleRenderer.java:901)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.XhtmlRenderer.renderEventHandlers(XhtmlRenderer.java:460)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.renderEventHandlers(FormElementRenderer.java:193)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.XhtmlRenderer.renderAllAttributes(XhtmlRenderer.java:316)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormInputRenderer.renderAllAttributes(FormInputRenderer.java:109)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyListboxRenderer.encodeElementContent(SimpleSelectManyListboxRenderer.java:79)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyRenderer.encodeAllAsElement(SimpleSelectManyRenderer.java:368)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.encodeAll(FormElementRenderer.java:109)
at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer$Box.encodeAllChildren(SelectManyShuttleRenderer.java:1115)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderContent(PanelBoxRenderer.java:413)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderBody(PanelBoxRenderer.java:340)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderMiddleRow(PanelBoxRenderer.java:267)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer.encodeAll(PanelBoxRenderer.java:115)
at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer._renderContainerRow(SelectManyShuttleRenderer.java:577)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer.encodeElementContent(SelectManyShuttleRenderer.java:312)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyRenderer.encodeAllAsElement(SimpleSelectManyRenderer.java:368)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.encodeAll(FormElementRenderer.java:109)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:694)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:287)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:304)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.renderContent(PanelPartialRootRenderer.java:72)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.renderContent(BodyRenderer.java:136)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.encodeAll(PanelPartialRootRenderer.java:152)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.encodeAll(BodyRenderer.java:78)
at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.DocumentRenderer.encodeAll(DocumentRenderer.java:80)
at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:694)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:181)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:208)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:165)
at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:138)
at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Does somebody have an idea, what goes wrong?
Thank you in advance,
Tilo
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Re: [Trinidad] SelectManyShuttle NullPointerException and Understanding
Posted by Matthias Wessendorf <ma...@apache.org>.
filed issue:
https://issues.apache.org/jira/browse/TRINIDAD-627
will address tomorrow, if someone is not faster
-M
On 8/15/07, Matthias Wessendorf <ma...@apache.org> wrote:
> jup,
>
> will fix it.
>
> On 8/15/07, Adam Winer <aw...@gmail.com> wrote:
> > On 8/15/07, Matthias Wessendorf <ma...@apache.org> wrote:
> > > your shuttle isn't included in a
> > > form
> > >
> > > <tr:form>
> > > <tr:selectManyShuttle leadingHeader="Not Selected"
> > > trailingHeader="Selected" value="#{detailsBean.selected}">
> > > <f:selectItems value="#{detailsBean.all}" />
> > > </tr:selectManyShuttle>
> > > </tr:form>
> > >
> > > that's the NPE.
> >
> > Nothing should NPE like that when you're not in a form.
> > If a component absolutely requires a form, it should log a warning
> > at the start of its encoding and return without rendering anything.
> >
> > --- Adam
> >
>
>
> --
> Matthias Wessendorf
>
> further stuff:
> blog: http://matthiaswessendorf.wordpress.com/
> mail: matzew-at-apache-dot-org
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
mail: matzew-at-apache-dot-org
Re: [Trinidad] SelectManyShuttle NullPointerException and Understanding
Posted by Matthias Wessendorf <ma...@apache.org>.
jup,
will fix it.
On 8/15/07, Adam Winer <aw...@gmail.com> wrote:
> On 8/15/07, Matthias Wessendorf <ma...@apache.org> wrote:
> > your shuttle isn't included in a
> > form
> >
> > <tr:form>
> > <tr:selectManyShuttle leadingHeader="Not Selected"
> > trailingHeader="Selected" value="#{detailsBean.selected}">
> > <f:selectItems value="#{detailsBean.all}" />
> > </tr:selectManyShuttle>
> > </tr:form>
> >
> > that's the NPE.
>
> Nothing should NPE like that when you're not in a form.
> If a component absolutely requires a form, it should log a warning
> at the start of its encoding and return without rendering anything.
>
> --- Adam
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
mail: matzew-at-apache-dot-org
Re: [Trinidad] SelectManyShuttle NullPointerException and Understanding
Posted by Adam Winer <aw...@gmail.com>.
On 8/15/07, Matthias Wessendorf <ma...@apache.org> wrote:
> your shuttle isn't included in a
> form
>
> <tr:form>
> <tr:selectManyShuttle leadingHeader="Not Selected"
> trailingHeader="Selected" value="#{detailsBean.selected}">
> <f:selectItems value="#{detailsBean.all}" />
> </tr:selectManyShuttle>
> </tr:form>
>
> that's the NPE.
Nothing should NPE like that when you're not in a form.
If a component absolutely requires a form, it should log a warning
at the start of its encoding and return without rendering anything.
--- Adam
Re: [Trinidad] SelectManyShuttle NullPointerException and Understanding
Posted by Matthias Wessendorf <ma...@apache.org>.
your shuttle isn't included in a
form
<tr:form>
<tr:selectManyShuttle leadingHeader="Not Selected"
trailingHeader="Selected" value="#{detailsBean.selected}">
<f:selectItems value="#{detailsBean.all}" />
</tr:selectManyShuttle>
</tr:form>
that's the NPE.
Yes, the usage is like that.
<f:selectItems /> is for "the available items"
and the value for the "selected" meaning, what goes to your bean.
That said,
when the List already contains some of these available values, they
show up on the right side, when rendering:
faces page:
<tr:...Shuttle ... value="#{bean.manyInitialValues}">
<tr:selectItem label="coffee" value="bean" shortDesc="Coffee from Kona"/>
<tr:selectItem label="tea" value="leaf" shortDesc="Tea from China"/>
<tr:selectItem label="orange juice" value="orange"/>
<tr:selectItem label="milk" value="moo"/>
</...shuttle>
Java:
private List _manyInitialValues = new ArrayList();
//plus accessors
adding the already available values:
_manyInitialValues.add("bean");
_manyInitialValues.add("leaf");
_manyInitialValues.add("orange");
_manyInitialValues.add("moo");
HTH,
Matthias
On 8/15/07, Tilo Gau <no...@gmx.de> wrote:
> Hi,
>
> I have quite a trouble to unterstand the SelectManyShuttle and get it running.
>
> First, how I understood the SelectManyShuttle so far:
> <tr:selectManyShuttle leadingHeader="Not Selected" trailingHeader="Selected" value="#{detailsBean.selected}">
> <f:selectItems value="#{detailsBean.all}" />
> </tr:selectManyShuttle>
>
> The value in <tr:selectManyShuttle /> is a List of indexes of the selected items.
>
> The value in <f:selectItems /> is a List of SelectItems with index, label and description of all items.
>
>
>
> Second, how I implemented the according methods:
>
> public List<SelectItem> getAll() {
> List<SelectItem> list = new ArrayList<SelectItem>();
> for(Iterator it = getAllItems().iterator();it.hasNext();){
> Item item = (Item)it.next();
> list.add(new SelectItem(item .getId(), item .getLabel(), item .getDescription()));
> }
> return list;
> }
>
> public List<Integer> getSelected(){
> List<Integer> list = new ArrayList<Integer>();
> for(Iterator it = getSelectedItems().iterator();it.hasNext();){
> Item item = (Item)it.next();
> list.add(item.getId());
> }
> return list;
> }
>
>
>
> Third, what error I got, when I tried to show the page:
>
> java.lang.NullPointerException
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer$ShuttleList.getOndblclick(SelectManyShuttleRenderer.java:901)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.XhtmlRenderer.renderEventHandlers(XhtmlRenderer.java:460)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.renderEventHandlers(FormElementRenderer.java:193)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.XhtmlRenderer.renderAllAttributes(XhtmlRenderer.java:316)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormInputRenderer.renderAllAttributes(FormInputRenderer.java:109)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyListboxRenderer.encodeElementContent(SimpleSelectManyListboxRenderer.java:79)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyRenderer.encodeAllAsElement(SimpleSelectManyRenderer.java:368)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.encodeAll(FormElementRenderer.java:109)
> at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer$Box.encodeAllChildren(SelectManyShuttleRenderer.java:1115)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderContent(PanelBoxRenderer.java:413)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderBody(PanelBoxRenderer.java:340)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer._renderMiddleRow(PanelBoxRenderer.java:267)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelBoxRenderer.encodeAll(PanelBoxRenderer.java:115)
> at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer._renderContainerRow(SelectManyShuttleRenderer.java:577)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SelectManyShuttleRenderer.encodeElementContent(SelectManyShuttleRenderer.java:312)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.SimpleSelectManyRenderer.encodeAllAsElement(SimpleSelectManyRenderer.java:368)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.FormElementRenderer.encodeAll(FormElementRenderer.java:109)
> at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
> at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:694)
> at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:287)
> at org.apache.myfaces.trinidad.render.CoreRenderer.encodeAllChildren(CoreRenderer.java:304)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.renderContent(PanelPartialRootRenderer.java:72)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.renderContent(BodyRenderer.java:136)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.PanelPartialRootRenderer.encodeAll(PanelPartialRootRenderer.java:152)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.BodyRenderer.encodeAll(BodyRenderer.java:78)
> at org.apache.myfaces.trinidad.render.CoreRenderer.delegateRenderer(CoreRenderer.java:318)
> at org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.DocumentRenderer.encodeAll(DocumentRenderer.java:80)
> at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:208)
> at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:694)
> at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
> at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
> at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:580)
> at org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:181)
> at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
> at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
> at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._invokeDoFilter(TrinidadFilterImpl.java:208)
> at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:165)
> at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:138)
> at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
> at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
> at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
> at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
> at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
> at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
> at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
> at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
> at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
> at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
> at java.lang.Thread.run(Unknown Source)
>
> Does somebody have an idea, what goes wrong?
> Thank you in advance,
> Tilo
>
> --
> GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS.
> Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
mail: matzew-at-apache-dot-org
Re: [Trinidad] SelectManyShuttle NullPointerException and
Understanding
Posted by Tilo Gau <no...@gmx.de>.
Thanks a lot, now it works.
It seams i get used to look closer to the code I write.
[Off Topic]
Nice articles in the JavaMagazin ...! ;)
-------- Original-Nachricht --------
Datum: Wed, 15 Aug 2007 14:01:48 +0200
Von: "Matthias Wessendorf" <ma...@apache.org>
An: normad2@gmx.de
Betreff: Re: [Trinidad] SelectManyShuttle NullPointerException and Understanding
>
> [...]
>
> ..............
> your shuttle isn't included in a
> form
>
> <tr:form>
> <tr:selectManyShuttle leadingHeader="Not Selected"
> trailingHeader="Selected" value="#{detailsBean.selected}">
> <f:selectItems value="#{detailsBean.all}" />
> </tr:selectManyShuttle>
> </tr:form>
>
> that's the NPE.
>
> Yes, the usage is like that.
> <f:selectItems /> is for "the available items"
> and the value for the "selected" meaning, what goes to your bean.
>
> That said,
> when the List already contains some of these available values, they
> show up on the right side, when rendering:
>
> faces page:
> <tr:...Shuttle ... value="#{bean.manyInitialValues}">
>
> <tr:selectItem label="coffee" value="bean" shortDesc="Coffee from Kona"/>
> <tr:selectItem label="tea" value="leaf" shortDesc="Tea from China"/>
> <tr:selectItem label="orange juice" value="orange"/>
> <tr:selectItem label="milk" value="moo"/>
> </...shuttle>
>
> Java:
> private List _manyInitialValues = new ArrayList();
> //plus accessors
>
> adding the already available values:
> _manyInitialValues.add("bean");
> _manyInitialValues.add("leaf");
> _manyInitialValues.add("orange");
> _manyInitialValues.add("moo");
>
>
> HTH,
> Matthias
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