The id counter in viewRoot.createUniqueId() are resetted (at least in
RI) on every request.
If on rerendering a new  id is requested you get a already, on first
rendering created, existent id.

This is the case e.g. on tab switch, change of rendered attribute, ...


Regards,
    Volker



2008/1/16, Bernd Bohmann <[EMAIL PROTECTED]>:
> Hello Volker,
>
> my experience is you should assign uniqueIds to components.
> What is the diffence between components created by application from a
> tag and inside a component?
>
> If not you get maybe some errors like this:
>
> If this component was created dynamically (i.e. not by a JSP tag) you
> should assign it an explicit static id or assign it the id you get from
> the createUniqueId from the current UIViewRoot component right after
> creation!
>
> If I have time i will checkin the files to reproduce the error.
>
> Regards
>
> Bernd
>
> Volker Weber schrieb:
> > Bernd,
> >
> > i don't know how facelets component creation, rerendering works, but
> > to my experience the assigning of viewRoot.createUniqueId() ids to
> > componets created by application wil result in dublicateIdException on
> > rerendering.
> >
> >
> > Regards,
> >     Volker
> >
> > 2008/1/15, [EMAIL PROTECTED] <[EMAIL PROTECTED]>:
> >> Author: bommel
> >> Date: Tue Jan 15 14:21:33 2008
> >> New Revision: 612250
> >>
> >> URL: http://svn.apache.org/viewvc?rev=612250&view=rev
> >> Log:
> >> (TOBAGO-596) Duplicate component Id exception with tc:date and tx:date 
> >> with facelets
> >>
> >> Modified:
> >>     
> >> myfaces/tobago/trunk/core/src/main/java/org/apache/myfaces/tobago/component/UIDatePicker.java
> >>     
> >> myfaces/tobago/trunk/theme/scarborough/src/main/java/org/apache/myfaces/tobago/renderkit/html/scarborough/standard/tag/DatePickerRenderer.java
> >>
> >> Modified: 
> >> myfaces/tobago/trunk/core/src/main/java/org/apache/myfaces/tobago/component/UIDatePicker.java
> >> URL: 
> >> http://svn.apache.org/viewvc/myfaces/tobago/trunk/core/src/main/java/org/apache/myfaces/tobago/component/UIDatePicker.java?rev=612250&r1=612249&r2=612250&view=diff
> >> ==============================================================================
> >> --- 
> >> myfaces/tobago/trunk/core/src/main/java/org/apache/myfaces/tobago/component/UIDatePicker.java
> >>  (original)
> >> +++ 
> >> myfaces/tobago/trunk/core/src/main/java/org/apache/myfaces/tobago/component/UIDatePicker.java
> >>  Tue Jan 15 14:21:33 2008
> >> @@ -135,13 +135,15 @@
> >>      UIHiddenInput hidden =
> >>          (UIHiddenInput) ComponentUtil.createComponent(facesContext,
> >>              UIHiddenInput.COMPONENT_TYPE, RENDERER_TYPE_HIDDEN);
> >> +    hidden.setId(facesContext.getViewRoot().createUniqueId());
> >>      link.getChildren().add(hidden);
> >>
> >>      // create popup
> >>      final UIPopup popup =
> >>          (UIPopup) ComponentUtil.createComponent(facesContext, 
> >> UIPopup.COMPONENT_TYPE,
> >>              RENDERER_TYPE_POPUP);
> >> -    //popup.setId(link.getId() + "popup");
> >> +
> >> +    popup.setId(facesContext.getViewRoot().createUniqueId());
> >>      link.getFacets().put(FACET_PICKER_POPUP, popup);
> >>
> >>      popup.setRendered(false);
> >> @@ -234,6 +236,7 @@
> >>      UIGraphic image = (UIGraphic) ComponentUtil.createComponent(
> >>          facesContext, UIGraphic.COMPONENT_TYPE, RENDERER_TYPE_IMAGE);
> >>      image.setRendered(true);
> >> +    image.setId(facesContext.getViewRoot().createUniqueId());
> >>      image.setValue("image/date.gif");
> >>      image.getAttributes().put(ATTR_ALT, ""); //TODO: i18n
> >>      
> >> StyleClasses.ensureStyleClasses(image).addFullQualifiedClass("tobago-input-picker");
> >>  // XXX not a standard name
> >>
> >> Modified: 
> >> myfaces/tobago/trunk/theme/scarborough/src/main/java/org/apache/myfaces/tobago/renderkit/html/scarborough/standard/tag/DatePickerRenderer.java
> >> URL: 
> >> http://svn.apache.org/viewvc/myfaces/tobago/trunk/theme/scarborough/src/main/java/org/apache/myfaces/tobago/renderkit/html/scarborough/standard/tag/DatePickerRenderer.java?rev=612250&r1=612249&r2=612250&view=diff
> >> ==============================================================================
> >> --- 
> >> myfaces/tobago/trunk/theme/scarborough/src/main/java/org/apache/myfaces/tobago/renderkit/html/scarborough/standard/tag/DatePickerRenderer.java
> >>  (original)
> >> +++ 
> >> myfaces/tobago/trunk/theme/scarborough/src/main/java/org/apache/myfaces/tobago/renderkit/html/scarborough/standard/tag/DatePickerRenderer.java
> >>  Tue Jan 15 14:21:33 2008
> >> @@ -70,20 +70,18 @@
> >>          link.setDisabled(dateInput.isReadonly() || 
> >> dateInput.isDisabled());
> >>        }
> >>      }
> >> -    String idPrefix = dateInput.getId() + "_picker";
> >>      Map<String, Object>  attributes = link.getAttributes();
> >>      link.setActionListener(datePickerController);
> >>      attributes.put(ATTR_LAYOUT_WIDTH, getConfiguredValue(facesContext, 
> >> component, "pickerWidth"));
> >>      UIComponent hidden = (UIComponent) link.getChildren().get(0);
> >> -    hidden.setId(idPrefix + "Dimension");
> >> +    UIPopup popup = (UIPopup) link.getFacets().get(FACET_PICKER_POPUP);
> >> +
> >>      attributes.put(ATTR_ACTION_ONCLICK, "Tobago.openPickerPopup(event, '"
> >>          + link.getClientId(facesContext) + "', '"
> >> -        + hidden.getClientId(facesContext) + "')");
> >> -
> >> -    UIPopup popup = (UIPopup) link.getFacets().get(FACET_PICKER_POPUP);
> >> +        + hidden.getClientId(facesContext) + "', '"
> >> +        + popup.getClientId(facesContext) +"')");
> >>
> >>      attributes = popup.getAttributes();
> >> -    popup.setId(idPrefix + "popup");
> >>
> >>      attributes.put(ATTR_WIDTH, String.valueOf(
> >>             ThemeConfig.getValue(facesContext, link, 
> >> "CalendarPopupWidth")));
> >> @@ -113,8 +111,6 @@
> >>
> >>      applyConverterPattern(popup, converterPattern);
> >>
> >> -    UIComponent image = (UIComponent) link.getChildren().get(1);
> >> -    image.setId(idPrefix + "image");
> >>      if (popup != null) {
> >>        UIPage page = ComponentUtil.findPage(facesContext, link);
> >>        page.getPopups().add(popup);
> >>
> >>
> >>
> >
> >
>


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