Re: [Wicket-user] Refreshing dynamic images
By default resources are cachable.You have to turn that off first:SpclChartResource resource = new SpclChartResource() {
/// fooo
};resource.setCacheable(false);Image tmpImage2 = new Image("image2", resource);johanOn 2/28/06, Anders Peterson <
[EMAIL PROTECTED]> wrote:
Hi,On one page I'm displaying dynamic charts (JFreeChart) as images. Thecharts, the data they're based on, are constantly changed by the users.The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Whichmeans incorrect data is displayed.How can I make sure the browser always asks for a fresh image?/AndersImage tmpImage2 = new Image("image2", new SpclChartResource() {
public AbstractChartFactory getFactory() {this.setHeight(300);this.setWidth(600);DefaultCategoryDatasetFactory retVal = new DefaultCategoryDatasetFactory();
retVal.setLegend(true);retVal.setType(AbstractChartFactory.TYPE_BarChart);...--http://ojalgo.org/Mathematics, Linear Algebra and Optimisation with Java
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Re: [Wicket-user] Refreshing dynamic images
Cool trick Igor, I didn't think of this before.
On 2/28/06, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> the trick is to append a random number as a query parameter. that way the
> browser has to fetch it again because it thinks its a different document.
>
> -Igor
>
>
> On 2/28/06, Martijn Dashorst <[EMAIL PROTECTED]> wrote:
> > Set the headers on the response.
> >
> > The browser support is a bit flaky as I understand it, from the numerous
> caching problems with pages across browsers (safari, IE and FF work
> differently).
> >
> > Martijn
> >
> >
> >
> >
> > On 2/28/06, Anders Peterson <[EMAIL PROTECTED] > wrote:
> > > Hi,
> > >
> > > On one page I'm displaying dynamic charts (JFreeChart) as images. The
> > > charts, the data they're based on, are constantly changed by the users.
> > >
> > > The problem (as I understand it): The web browser doesn't know that the
> > > image has changed and therefore (sometimes) uses a cached image. Which
> > > means incorrect data is displayed.
> > >
> > > How can I make sure the browser always asks for a fresh image?
> > >
> > > /Anders
> > >
> > >
> > > Image tmpImage2 = new Image("image2", new SpclChartResource() {
> > >
> > > public AbstractChartFactory getFactory() {
> > >
> > > this.setHeight(300);
> > > this.setWidth(600);
> > >
> > > DefaultCategoryDatasetFactory retVal = new
> DefaultCategoryDatasetFactory();
> > > retVal.setLegend(true);
> > >
> retVal.setType(AbstractChartFactory.TYPE_BarChart);
> > > ...
> > > --
> > > http://ojalgo.org/
> > >
> > > Mathematics, Linear Algebra and Optimisation with Java
> > >
> > >
> > >
> > > ---
> > > This SF.Net email is sponsored by xPML, a groundbreaking scripting
> language
> > > that extends applications into web and mobile media. Attend the live
> webcast
> > > and join the prime developer group breaking into this new coding
> territory!
> > >
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
> > > ___
> > > Wicket-user mailing list
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> > >
> https://lists.sourceforge.net/lists/listinfo/wicket-user
> > >
> >
> >
> >
> > --
> > Living a wicket life...
> >
> > Martijn Dashorst - http://www.jroller.com/page/dashorst
> >
> > Wicket 1.1.1 is out:
> http://wicket.sourceforge.net/wicket-1.1
>
>
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Re: [Wicket-user] Refreshing dynamic images
the trick is to append a random number as a query parameter. that way the browser has to fetch it again because it thinks its a different document.-IgorOn 2/28/06,
Martijn Dashorst <[EMAIL PROTECTED]> wrote:
Set the headers on the response.The browser support is a bit flaky as I understand it, from the numerous caching problems with pages across browsers (safari, IE and FF work differently).Martijn
On 2/28/06, Anders Peterson <[EMAIL PROTECTED]
> wrote:
Hi,On one page I'm displaying dynamic charts (JFreeChart) as images. Thecharts, the data they're based on, are constantly changed by the users.The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Whichmeans incorrect data is displayed.How can I make sure the browser always asks for a fresh image?/AndersImage tmpImage2 = new Image("image2", new SpclChartResource() {
public AbstractChartFactory getFactory() {this.setHeight(300);this.setWidth(600);DefaultCategoryDatasetFactory retVal = new DefaultCategoryDatasetFactory();
retVal.setLegend(true);retVal.setType(AbstractChartFactory.TYPE_BarChart);...--http://ojalgo.org/
Mathematics, Linear Algebra and Optimisation with Java
---This SF.Net email is sponsored by xPML, a groundbreaking scripting languagethat extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
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https://lists.sourceforge.net/lists/listinfo/wicket-user-- Living a wicket life...Martijn Dashorst -
http://www.jroller.com/page/dashorst
Wicket 1.1.1 is out: http://wicket.sourceforge.net/wicket-1.1
Re: [Wicket-user] Refreshing dynamic images
Set the headers on the response.The browser support is a bit flaky as I understand it, from the numerous caching problems with pages across browsers (safari, IE and FF work differently).Martijn
On 2/28/06, Anders Peterson <[EMAIL PROTECTED]> wrote:
Hi,On one page I'm displaying dynamic charts (JFreeChart) as images. Thecharts, the data they're based on, are constantly changed by the users.The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Whichmeans incorrect data is displayed.How can I make sure the browser always asks for a fresh image?/AndersImage tmpImage2 = new Image("image2", new SpclChartResource() {
public AbstractChartFactory getFactory() {this.setHeight(300);this.setWidth(600);DefaultCategoryDatasetFactory retVal = new DefaultCategoryDatasetFactory();
retVal.setLegend(true);retVal.setType(AbstractChartFactory.TYPE_BarChart);...--http://ojalgo.org/Mathematics, Linear Algebra and Optimisation with Java
---This SF.Net email is sponsored by xPML, a groundbreaking scripting languagethat extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
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https://lists.sourceforge.net/lists/listinfo/wicket-user-- Living a wicket life...Martijn Dashorst - http://www.jroller.com/page/dashorst
Wicket 1.1.1 is out: http://wicket.sourceforge.net/wicket-1.1
[Wicket-user] Refreshing dynamic images
Hi,
On one page I'm displaying dynamic charts (JFreeChart) as images. The
charts, the data they're based on, are constantly changed by the users.
The problem (as I understand it): The web browser doesn't know that the
image has changed and therefore (sometimes) uses a cached image. Which
means incorrect data is displayed.
How can I make sure the browser always asks for a fresh image?
/Anders
Image tmpImage2 = new Image("image2", new SpclChartResource() {
public AbstractChartFactory getFactory() {
this.setHeight(300);
this.setWidth(600);
DefaultCategoryDatasetFactory retVal = new
DefaultCategoryDatasetFactory();
retVal.setLegend(true);
retVal.setType(AbstractChartFactory.TYPE_BarChart);
...
--
http://ojalgo.org/
Mathematics, Linear Algebra and Optimisation with Java
---
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
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