Thank you very much for your answer.
I realized that my attempt to format a null Date was the reason for the
exception. Without the formatting component (with the id
"creationDateFormat") an empty string is displayed.
Despite the possible drawback I'd like to try your suggestion. I would be
very happy if someone gave me a hint how to code the If component in
combination with the ognl syntax to catch the null Date.
Here again the mentioned code snippet:
<component id="creationDateFormat" type="Insert">
<binding name="value"
value="components.table.tableRow.creationDate.time"/>
<binding name="format" value="dateFormat"/>
</component>
Manuel
-----Original Message-----
From: Shing Hing Man [mailto:[EMAIL PROTECTED]
Sent: Freitag, 23. Juni 2006 06:53
To: Tapestry users
Subject: Re: Null Date in a Contrib:Table
Have you consider wrapping your component
'creationDateFormat' with an If component - so that
the date is only rendered if it is not null ?
There might be a drawback with the above approach. The
default sorting on your date column might not work.
Shing
--- Manuel Thurn <[EMAIL PROTECTED]> wrote:
> Hi!
>
>
>
> For a project I want to display a list of objects in
> an html table. I'm
> using the Table component of the contrib library of
> Tapestry. One column
> should show a formatted Date (or Calendar) object.
> It works fine as long as
> the Date is not null. But if the database contains
> objects with null values
> I get the following Exception:
>
>
>
> Unable to read OGNL expression.: source is null for
> getProperty(null,
> "tableRow")
>
>
>
> Here is a snippet of the .page file. creationDate is
> a Calendar object. To
> format it I get the Date with getTime() and use the
> format parameter of the
> Insert component.
>
>
>
> <component id="campaignTable" type="Contrib:Table">
>
> <binding name="source" value="dataItems"/>
>
> <binding name="columns" value="literal:name,
> description, creationDate"/>
>
> </component>
>
>
>
> <component id="creationDateFormat" type="Insert">
>
> <binding name="value"
>
value="components.table.tableRow.creationDate.time"/>
>
> <binding name="format" value="dateFormat"/>
>
> </component>
>
>
>
> I would be happy if you could help me find a way to
> handle this exception.
>
>
>
> Thanks,
>
>
>
> Manuel
>
>
>
>
Home page :
http://uk.geocities.com/matmsh/index.html
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