ValidationDelegate null when not using Annotations

["Earnshaw, Wayne" <wa...@fanniemae.com>]

Hi folks,

I've been working through the Enjoying Web Development with Tapestry
book (and applying it successfully to our current project - it's a good
tutorial style book, probably not a reference book though :). 

Anyhow, in chapter 3 for Validating Inputs it all works up to page 65.
On Page 66 we switch to using the @Bean annotation  (which I can't use
in JDK1.4.2, so I stick with the following from Home.page)...

    <bean name="delegate"
class="org.apache.tapestry.valid.ValidationDelegate"/>
 
In Home.java I have

    public abstract ValidationDelegate getDelegate();

    public IPage onSubmit() {
	
        ValidationDelegate delegate = getDelegate();
        // here delegate is null
        // one easy solution is to instead use 
        // ValidationDelegate delegate = (ValidationDelegate)
getBeans().getBean("delegate");
    }

The problem is that the delegate returned by the abstract method is
null... 

Do I need to inject this bean somehow?

cheers,

Wayne Earnshaw

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Re: ValidationDelegate null when not using Annotations

[Howard Lewis Ship <hl...@gmail.com>]

You must add property="delegate" to the <bean> element to have it
injected as a page property.

On 1/27/06, Earnshaw, Wayne <wa...@fanniemae.com> wrote:
> Hi folks,
>
> I've been working through the Enjoying Web Development with Tapestry
> book (and applying it successfully to our current project - it's a good
> tutorial style book, probably not a reference book though :).
>
> Anyhow, in chapter 3 for Validating Inputs it all works up to page 65.
> On Page 66 we switch to using the @Bean annotation  (which I can't use
> in JDK1.4.2, so I stick with the following from Home.page)...
>
>     <bean name="delegate"
> class="org.apache.tapestry.valid.ValidationDelegate"/>
>
> In Home.java I have
>
>     public abstract ValidationDelegate getDelegate();
>
>     public IPage onSubmit() {
>
>         ValidationDelegate delegate = getDelegate();
>         // here delegate is null
>         // one easy solution is to instead use
>         // ValidationDelegate delegate = (ValidationDelegate)
> getBeans().getBean("delegate");
>     }
>
> The problem is that the delegate returned by the abstract method is
> null...
>
> Do I need to inject this bean somehow?
>
> cheers,
>
> Wayne Earnshaw
>
> The electronic mail message you have received and any files transmitted
> with it are confidential and solely for the intended addressee(s)'s
> attention. Do not divulge, copy, forward, or use the contents,
> attachments, or information without permission of Fannie Mae.
> Information contained in this message is provided solely for the purpose
> stated in the message or its attachment(s) and must not be disclosed to
> any third party or used for any other purpose without consent of Fannie
> Mae. If you have received this message and/or any files transmitted with
> it in error, please delete them from your system, destroy any hard
> copies of them, and contact the sender.
>
>
>
>
>
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>


--
Howard M. Lewis Ship
Independent J2EE / Open-Source Java Consultant
Creator, Jakarta Tapestry
Creator, Jakarta HiveMind

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

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