Re: Could not find a coercion from type java.lang.String to type com.****.lighting.guidecontrol.view.BreadcrumbBean

[Jan Vissers]

Here it is:

import java.util.List;

import org.apache.log4j.Logger;
import org.apache.tapestry.annotations.Parameter;

import com.philips.lighting.guidecontrol.view.BreadcrumbBean;

/**
 * The heading component holds the following pieces of Heading
information.
 * 
 * <pre>
 *    &lt;div id=&quot;heading&quot;&gt;
 *      &lt;ul id=&quot;breadcrumbs&quot;&gt;
 *           &lt;li
id=&quot;prefix&quot;&gt;[ &amp;aposyou-are-here&amp;apos ]&gt;/li&gt;
 *           { when loginPage }
 *               &lt;li&gt;&amp;aposlogin-page&amp;apos&lt;/li&gt;
 *           { when not loginPage }
 *               { for all crumbs }
 *                   { if crumb is last }
 *                       &lt;li&gt;[ crumb text ]&lt;/li&gt;
 *                   { if crumb is not last }
 *                       &lt;li&gt;&lt;a href=&quot;[ crumb
link ]&quot;&gt;[ crumb text ]&lt;/a&gt; &gt; &lt;/li&gt;
 *      &lt;/ul&gt;
 *    &lt;/div&gt;
 * </pre>
 * 
 * @author Cumquat Information Technology
 * 
 */
public class Heading {
    private static final Logger logger =
Logger.getLogger(Heading.class);
    
    @Parameter
    private boolean loginPage = false;

    @Parameter
    private List<BreadcrumbBean> breadCrumbs;

    private int index;

    private BreadcrumbBean crumb;

    public boolean isLoginPage() {
        return loginPage;
    }

    public List<BreadcrumbBean> getBreadCrumbs() {
        return breadCrumbs;
    }

    public void setBreadCrumbs(List<BreadcrumbBean> breadCrumbs) {
        logger.debug("Setting breadcrumbs: "+breadCrumbs);
        this.breadCrumbs = breadCrumbs;
    }

    public int getIndex() {
        return index;
    }

    public void setIndex(int index) {
        this.index = index;
    }

    public BreadcrumbBean getCrumb() {
        return crumb;
    }

    public void setCrumb(BreadcrumbBean crumb) {
        this.crumb = crumb;
    }

    public boolean isLastCrumb() {
        return (index == breadCrumbs.size() - 1);
    }
    
}

On Fri, 2008-04-18 at 16:22 +0200, Chris Lewis wrote:
> We still haven't seen your template code, where you declare this
> component and pass it the model. I can't be sure but perhaps it will
> shed some light...
> 
> Jan Vissers wrote:
> > The problem is somehow related to the way my page and component are
> > hooked up/working.
> >
> > For testing purposes I now create the Breadcrumb list in the component
> > itself, simply returning a created list on the fly whenever
> > getBreadCrumbs() is called. This works as expected!!!
> >
> > Strange thing is that via passing the 'model' to the component via a
> > page binding the same thing doesn't work. This must be a bug?!
> >
> > -J.
> >
> > On Fri, 2008-04-18 at 15:59 +0200, Chris Lewis wrote:
> >   
> >> That looks good to me. I don't have an example I can look at with a
> >> loop, but I do have one with a t:grid in which I reference a bean
> >> property of a custom class. It's possible that the two are vastly
> >> different, but I wouldn't think that.
> >>
> >> Jan Vissers wrote:
> >>     
> >>> On the component I have:
> >>>
> >>>     @Parameter
> >>>     private List<BreadcrumbBean> breadCrumbs;
> >>>
> >>> This is passed in via the containg (base)page.
> >>> And in the same component class I have:
> >>>
> >>>     private BreadcrumbBean crumb;
> >>>
> >>>     public BreadcrumbBean getCrumb() {
> >>>         return crumb;
> >>>     }
> >>>
> >>>     public void setCrumb(BreadcrumbBean crumb) {
> >>>         this.crumb = crumb;
> >>>     }
> >>>
> >>> This should be right, right?
> >>>
> >>> -J.
> >>>
> >>> On Fri, 2008-04-18 at 14:00 +0100, nicholas Krul wrote:
> >>>   
> >>>       
> >>>> ? is your crumb property of type BreadCrumbBean, or is it type String?
> >>>> should be same as breadCrumbs<?TYPE>
> >>>>
> >>>> On Fri, Apr 18, 2008 at 1:56 PM, Chris Lewis <[EMAIL PROTECTED]>
> >>>> wrote:
> >>>>
> >>>>     
> >>>>         
> >>>>> I can't speak about your t:if bit because I don't know what "LastCrumb"
> >>>>> would be, but assuming that your page class has getters/setters (or the
> >>>>> property is annotated with @Property) for the "crumb" property, a getter
> >>>>> for your "breadCrumbs," and your crumb bean defines a "getName" method,
> >>>>> you *should* be good.
> >>>>>
> >>>>> It would be helpful if you can include the exception, specifically the
> >>>>> line it references, etc.
> >>>>>
> >>>>> chris
> >>>>>
> >>>>> PS the list is good, the IRC channel (irc.freenode.net #tapestry) is
> >>>>> better ;-)
> >>>>>
> >>>>> Jan Vissers wrote:
> >>>>>       
> >>>>>           
> >>>>>> Yep, sure, I may I add - This mailing list is great and Tapestry rocks!
> >>>>>>
> >>>>>>  <t:loop source="breadCrumbs" value="crumb" index="index">
> >>>>>>     <t:if test="LastCrumb">
> >>>>>>        ${crumb.name}
> >>>>>>        <t:parameter name="else">
> >>>>>>            <a href="#"
> >>>>>> t:type="pageLink" ....>${crumb.name}</a>
> >>>>>>               >
> >>>>>>        </t:parameter>
> >>>>>>     </t:if>
> >>>>>> </t:loop>
> >>>>>>
> >>>>>> -J.
> >>>>>>
> >>>>>> On Fri, 2008-04-18 at 14:34 +0200, Chris Lewis wrote:
> >>>>>>
> >>>>>>         
> >>>>>>             
> >>>>>>> Can you share some code? At least the relevant part from template 
> >>>>>>> would
> >>>>>>> be helpful.
> >>>>>>>
> >>>>>>> chris
> >>>>>>>
> >>>>>>> Jan Vissers wrote:
> >>>>>>>
> >>>>>>>           
> >>>>>>>               
> >>>>>>>> Hi,
> >>>>>>>>
> >>>>>>>> Just to make sure I'm not missing something.
> >>>>>>>>
> >>>>>>>> In T4 when I wrote a @For construct I could use value="..." as long 
> >>>>>>>> as
> >>>>>>>>             
> >>>>>>>>                 
> >>>>> I
> >>>>>       
> >>>>>           
> >>>>>>>> provided a setter|getter pair for the class involved - in this case
> >>>>>>>> BreadcrumbBean. I want to iterate over a list of beans and use each
> >>>>>>>> instance individually. Now T5 throws up on me with this nice coercion
> >>>>>>>> message. Does this mean I need to contribute my own coercion - or is
> >>>>>>>> there a more simple way? In my case BreadcrumbBean is a simple class
> >>>>>>>> holding three String members.
> >>>>>>>>
> >>>>>>>> Thanks (again :-))
> >>>>>>>> -J.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> ---------------------------------------------------------------------
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> >>>>>>>> For additional commands, e-mail: [EMAIL PROTECTED]
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>             
> >>>>>>>>                 
> >>>>>> ---------------------------------------------------------------------
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> >>>>>> For additional commands, e-mail: [EMAIL PROTECTED]
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>         
> >>>>>>             
> >>>>> --
> >>>>> http://thegodcode.net
> >>>>>
> >>>>>
> >>>>>       
> >>>>>           
> >>> ---------------------------------------------------------------------
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> >>>
> >>>
> >>>   
> >>>       
> >
> >
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> >
> >
> >   
> 


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