Right, from WebResource class...
protected void setHeaders(WebResponse response)
{
if (isCacheable())
{
// If time is set also set cache headers.
response.setDateHeader("Expires", System.
currentTimeMillis() +
(getCacheDuration() * 1000L));
response.setHeader("Cache-Control", "max-age=" +
getCacheDuration());
}
else
{
response.setHeader("Cache-Control", "no-cache,
must-revalidate");
}
}
From: Martin Grigorov <[email protected]>
To: [email protected]
Date: 11/18/2010 08:59 AM
Subject: Re: Non-caching RenderedDynamicImageResource
On Thu, Nov 18, 2010 at 2:33 PM, <[email protected]> wrote:
> Right, good to know, was just providing the objects, assumed
> implementation of render to be irrelevant, but I guess not entirely.
> Anyway, I'm also interested in the second part of your question, what
does
> resource.setCacheable(false) effect, I've had trouble tracking this down
> in the resource classes...
It means "add response headers to tell the browser and public proxies to
not
cache this resource".
About Image+Ajax re-paint:
https://issues.apache.org/jira/browse/WICKET-1382
<https://issues.apache.org/jira/browse/WICKET-1382>Does this help in this
case ? I don't have time right now to look at the code and I have no
experience with this resource.
>
>
>
> From: Carl-Eric Menzel <[email protected]>
> To: [email protected]
> Date: 11/18/2010 08:26 AM
> Subject: Re: Non-caching RenderedDynamicImageResource
>
>
>
> On Thu, 18 Nov 2010 08:13:57 -0500
> [email protected] wrote:
>
> > Haven't tested this, but it could be a start...
> >
> > final RenderedDynamicImageResource rd = new
> > RenderedDynamicImageResource(100, 100) {
> >
> > @Override
> > protected boolean render(Graphics2D graphics)
> > { return false;
> > }
>
> That was my idea before I came up with my NonCaching...Resource.
> However, the return value of render(Graphics2D) is used to indicate the
> requirement to immediately re-render due to a change in image
> dimensions. Simply returning false would throw render() into an infinite
> loop:
>
> [RenderedDynamicImageResource]
> protected byte[] render()
> {
> while (true)
> {
> final BufferedImage image = new
> BufferedImage(getWidth(), getHeight(), getType());
> if (render((Graphics2D)image.getGraphics())) {
> return toImageData(image);
> }
> }
> }
>
> Carl-Eric
> www.wicketbuch.de
>
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