Re: [T5]: rendering component with nested component with @Component annotation

[Howard Lewis Ship]

It's a dangerous ambigutity that should probably not be allowed!

On 5/4/07, Kristian Marinkovic <[EMAIL PROTECTED]> wrote:

hi howard,

i switched to "normal" inheritance having Stylesheet
extend RelationshipLink.

Now i experience some troubles with @Parameter
overrides (redefining a property with another @Parameter).
Can you tell me how this works? What rules are applied to
it?

following override works correct and outputs "stylesheet":
public Stylesheet extends RelationshipLink {
    @Parameter(value="stylesheet",defaultPrefix="literal")
    private String rel;

public RelationshipLink {
    @Parameter
    private String rel;

but this does not; instead returns a toString of my Stylesheet
instance:
public Stylesheet extends RelationshipLink {
    @Parameter(value="literal:stylesheet")
    private String rel;

public RelationshipLink {
    @Parameter
    private String rel;

neither works
public Stylesheet extends RelationshipLink {
    @Parameter(value="stylesheet")
    private String rel;

public RelationshipLink {
    @Parameter(defaultPrefix="literal")
    private String rel;

thanks in advance
g,
kris




"Howard Lewis Ship" <[EMAIL PROTECTED]>
03.05.2007 17:59
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Re: [T5]: rendering component with nested component with @Component
annotation






Sub-components have no meaning unless there's a template.  It is the
elements in the template that drive the creation of sub-components. This
should be more explicit in the documentation, and perhaps there should be
a
check for components in classes without a template.

On 5/3/07, Kristian Marinkovic <[EMAIL PROTECTED]> wrote:
>
> hi,
>
> does anyone know how to render a Tapestry 5 component that itself
> contains a component with the @Component annotation?
>
> What i did so far is to define a template for the first component that
> contains the second component as a embedded component (code below).
>
> I'm trying to write a Stylesheet component that depends on a
> RelationshipLink (... actually the <link> tag :)) (please comment
> on whether you consider this component to be useful/reasonable
> or not).
>
> anyway, is this the right approach for writing (nested) components?
> should i use component inheritance instead? then i do not need the
> template.
>
> g,
> kris
>
> example code:
>
> public class Stylesheet {
>     @Parameter(required=true) private Asset href;
>     @Parameter  private String media;
>     @Parameter  private String rel;
>     @Parameter(value="text/css",defaultPrefix="literal") private String
> type;
>
>
>
>

@Component(id="relationshipLink",parameters={"href=href","media=media","rel=rel","type=type"})
>     private RelationshipLink relationshipLink;
>
>     public RelationshipLink getRelationshipLink() {
>         return relationshipLink;
>     }
>
> Stylesheet.html
> <link t:id="relationshipLink" xmlns:t="http://tapestry.."; />
>
> //see http://www.w3.org/TR/html4/struct/links.html for more details on
> link
> public class RelationshipLink {
>     /*
>      * As the only valid location for &lt;link&gt; is within &lt;head&gt
> it will
>      * not check the location
>      */
>   ...
>     void beginRender(MarkupWriter writer) {
>         writer.element("link",
>                 "href",href, "charSet",charSet, "hrefLang",
>                 hrefLang,"media",media,"rel",rel,"rev",rev,
>                 "target",target,"type",type);
>         writer.end();
>     }




--
Howard M. Lewis Ship
TWD Consulting, Inc.
Independent J2EE / Open-Source Java Consultant
Creator and PMC Chair, Apache Tapestry
Creator, Apache HiveMind

Professional Tapestry training, mentoring, support
and project work.  http://howardlewisship.com

--
Howard M. Lewis Ship
TWD Consulting, Inc.
Independent J2EE / Open-Source Java Consultant
Creator and PMC Chair, Apache Tapestry
Creator, Apache HiveMind

Professional Tapestry training, mentoring, support
and project work.  http://howardlewisship.com