Re: Remote Image Generation Null Pointer
WebComponent was a perfect fit, thank you.
A somewhat related problem exists however.
I load this Image using AjaxLazyLoadPanel like so:
add(new AjaxLazyLoadPanel("image") {
/**
* Makes object serializable.
*/
private static final long serialVersionUID = 1L;
@Override
public Component getLazyLoadComponent(String id) {
return (new ChartPanel(id));
}
});
class ChartPanel extends Panel {
private static final long serialVersionUID = 1L;
/**
* Constructor for ChartPanel.
*
* @param - The id to use
*
*/
public ChartPanel(String id) {
super(id);
addChart(this);
}
which calls my the addChart() that works now since I switched to WebComponent.
The lazy loading image (the spinning waiter) continues to spin after
the image is loaded.
Am I missing something obvious here to make it stop?
Thanks
On Sat, Dec 5, 2009 at 3:33 AM, bgooren wrote:
>
> If you want to generate the URL yourself and want to keep using the code you
> have already written, use a WebComponent instead of an Image:
>
> WebComponent dynamicImage = new WebComponent("image");
> dynamicImage.add(new AttributeModifier("src", true, new
> AbstractReadOnlyModel() {} ) );
>
> Otherwise, as suggested by the previous reply, look into
> DynamicImageResource.
>
>
> bassglider wrote:
>>
>> Hi Everyone,
>>
>> I am attempting to load an image that takes some time. I can load a
>> remote image using the URL, but when it takes time to gather the data
>> and then get the url, I get this:
>>
>> [java] 11174 [btpool0-1] ERROR org.apache.wicket.RequestCycle -
>> Exception in rendering component: [Component id = image]
>> [java] org.apache.wicket.WicketRuntimeException: Exception in
>> rendering component: [Component id = image]
>> [java] at
>> org.apache.wicket.Component.renderComponent(Component.java:2656)
>> [java] at
>> org.apache.wicket.markup.html.WebComponent.onRender(WebComponent.java:62)
>> [java] at org.apache.wicket.Component.render(Component.java:2448)
>>
>>
>> I read that it could be from the thread expiring or the page trying to
>> modify itself after it is rendered(?)
>>
>> So I tried adding this to my Application
>>
>> �...@override
>> protected void init() {
>> super.init();
>>
>> //remove thread monitoring from resource watcher
>> this.getResourceSettings().setResourcePollFrequency(null);
>> }
>>
>>
>> It had no effect on the issue. Any suggestions or remedies would be
>> greatly appreciated.
>>
>> Here is the code I am using:
>>
>>
>> Image dynamicImage = new Image("image");
>> dynamicImage.add(new AttributeModifier("src", true, new
>> AbstractReadOnlyModel() {
>>
>> private static final long serialVersionUID = 1L;
>>
>> /**
>> * {...@inheritdoc}
>> */
>> �...@override
>> public final Object getObject() {
>> GoogleChart chart = new GoogleChart("http://xx:/x/";);
>> String url = chart.getChart ("value", "2009-11-15"," 2009-11-15",
>> "", "july", true, false );
>> System.out.println("GETCHART URL: " + url);
>> //String url = "http://xx/PleaseStandBy.jpg";;
>> return url;
>> }
>> }));
>> dynamicImage.setOutputMarkupId(true);
>> add(dynamicImage);
>>
>> -
>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> For additional commands, e-mail: users-h...@wicket.apache.org
>>
>>
>>
>
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> http://old.nabble.com/Remote-Image-Generation-Null-Pointer-tp26653612p26655670.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
> -
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>
>
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Re: Remote Image Generation Null Pointer
If you want to generate the URL yourself and want to keep using the code you
have already written, use a WebComponent instead of an Image:
WebComponent dynamicImage = new WebComponent("image");
dynamicImage.add(new AttributeModifier("src", true, new
AbstractReadOnlyModel() {} ) );
Otherwise, as suggested by the previous reply, look into
DynamicImageResource.
bassglider wrote:
>
> Hi Everyone,
>
> I am attempting to load an image that takes some time. I can load a
> remote image using the URL, but when it takes time to gather the data
> and then get the url, I get this:
>
> [java] 11174 [btpool0-1] ERROR org.apache.wicket.RequestCycle -
> Exception in rendering component: [Component id = image]
> [java] org.apache.wicket.WicketRuntimeException: Exception in
> rendering component: [Component id = image]
> [java] at
> org.apache.wicket.Component.renderComponent(Component.java:2656)
> [java] at
> org.apache.wicket.markup.html.WebComponent.onRender(WebComponent.java:62)
> [java] at org.apache.wicket.Component.render(Component.java:2448)
>
>
> I read that it could be from the thread expiring or the page trying to
> modify itself after it is rendered(?)
>
> So I tried adding this to my Application
>
> @Override
> protected void init() {
>super.init();
>
>//remove thread monitoring from resource watcher
>this.getResourceSettings().setResourcePollFrequency(null);
> }
>
>
> It had no effect on the issue. Any suggestions or remedies would be
> greatly appreciated.
>
> Here is the code I am using:
>
>
> Image dynamicImage = new Image("image");
>dynamicImage.add(new AttributeModifier("src", true, new
> AbstractReadOnlyModel() {
>
> private static final long serialVersionUID = 1L;
>
> /**
> * {...@inheritdoc}
> */
> @Override
> public final Object getObject() {
>GoogleChart chart = new GoogleChart("http://xx:/x/";);
>String url = chart.getChart ("value", "2009-11-15"," 2009-11-15",
>"", "july", true, false );
>System.out.println("GETCHART URL: " + url);
>//String url = "http://xx/PleaseStandBy.jpg";;
>return url;
> }
>}));
>dynamicImage.setOutputMarkupId(true);
> add(dynamicImage);
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>
>
--
View this message in context:
http://old.nabble.com/Remote-Image-Generation-Null-Pointer-tp26653612p26655670.html
Sent from the Wicket - User mailing list archive at Nabble.com.
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Re: Remote Image Generation Null Pointer
Have you looked into DynamicImageResource?
On Sat, Dec 5, 2009 at 2:58 AM, bassglider wrote:
> Hi Everyone,
>
> I am attempting to load an image that takes some time. I can load a
> remote image using the URL, but when it takes time to gather the data
> and then get the url, I get this:
>
> [java] 11174 [btpool0-1] ERROR org.apache.wicket.RequestCycle -
> Exception in rendering component: [Component id = image]
> [java] org.apache.wicket.WicketRuntimeException: Exception in
> rendering component: [Component id = image]
> [java] at
> org.apache.wicket.Component.renderComponent(Component.java:2656)
> [java] at
> org.apache.wicket.markup.html.WebComponent.onRender(WebComponent.java:62)
> [java] at org.apache.wicket.Component.render(Component.java:2448)
>
>
> I read that it could be from the thread expiring or the page trying to
> modify itself after it is rendered(?)
>
> So I tried adding this to my Application
>
> �...@override
> protected void init() {
> super.init();
>
> //remove thread monitoring from resource watcher
> this.getResourceSettings().setResourcePollFrequency(null);
> }
>
>
> It had no effect on the issue. Any suggestions or remedies would be
> greatly appreciated.
>
> Here is the code I am using:
>
>
> Image dynamicImage = new Image("image");
> dynamicImage.add(new AttributeModifier("src", true, new
> AbstractReadOnlyModel() {
>
> private static final long serialVersionUID = 1L;
>
> /**
> * {...@inheritdoc}
> */
> @Override
> public final Object getObject() {
> GoogleChart chart = new GoogleChart("http://xx:/x/";);
> String url = chart.getChart ("value", "2009-11-15"," 2009-11-15",
> "", "july", true, false );
> System.out.println("GETCHART URL: " + url);
> //String url = "http://xx/PleaseStandBy.jpg";;
> return url;
> }
> }));
> dynamicImage.setOutputMarkupId(true);
> add(dynamicImage);
>
> -
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>
-
To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
For additional commands, e-mail: users-h...@wicket.apache.org
Remote Image Generation Null Pointer
Hi Everyone,
I am attempting to load an image that takes some time. I can load a
remote image using the URL, but when it takes time to gather the data
and then get the url, I get this:
[java] 11174 [btpool0-1] ERROR org.apache.wicket.RequestCycle -
Exception in rendering component: [Component id = image]
[java] org.apache.wicket.WicketRuntimeException: Exception in
rendering component: [Component id = image]
[java] at
org.apache.wicket.Component.renderComponent(Component.java:2656)
[java] at
org.apache.wicket.markup.html.WebComponent.onRender(WebComponent.java:62)
[java] at org.apache.wicket.Component.render(Component.java:2448)
I read that it could be from the thread expiring or the page trying to
modify itself after it is rendered(?)
So I tried adding this to my Application
@Override
protected void init() {
super.init();
//remove thread monitoring from resource watcher
this.getResourceSettings().setResourcePollFrequency(null);
}
It had no effect on the issue. Any suggestions or remedies would be
greatly appreciated.
Here is the code I am using:
Image dynamicImage = new Image("image");
dynamicImage.add(new AttributeModifier("src", true, new
AbstractReadOnlyModel() {
private static final long serialVersionUID = 1L;
/**
* {...@inheritdoc}
*/
@Override
public final Object getObject() {
GoogleChart chart = new GoogleChart("http://xx:/x/";);
String url = chart.getChart ("value", "2009-11-15"," 2009-11-15",
"", "july", true, false );
System.out.println("GETCHART URL: " + url);
//String url = "http://xx/PleaseStandBy.jpg";;
return url;
}
}));
dynamicImage.setOutputMarkupId(true);
add(dynamicImage);
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To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
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