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Posted to users@tapestry.apache.org by Peter Beshai <pe...@gmail.com> on 2008/04/09 17:45:10 UTC
[T5] Page loads before data is refreshed
I have a problem where I am using a grid component to display the contents
of a list retrieved from a database: sometimes after modifying the list, the
page loads without refreshing the data.
In my page:
@Cached
public List<MyEntity> getMyEntities()
{
return _myEntityDAO.findAll();
}
For instance, if I delete an item from the list using a control on that
page, and the page refreshes, the list will still show the item. If I click
refresh it will reload with the updated list. This only happens
occasionally, but it does happen more often than not.
Has anybody else encountered/fixed this?
Thanks,
Peter Beshai
Re: [T5] Page loads before data is refreshed
Posted by Josh Canfield <jo...@thedailytube.com>.
I've filed tickets for these problems:
https://issues.apache.org/jira/browse/TAPESTRY-2338
https://issues.apache.org/jira/browse/TAPESTRY-2337
Josh
On Wed, Apr 9, 2008 at 10:22 AM, Josh Canfield <jo...@thedailytube.com> wrote:
> I also found that the var binding doesn't seem to work in a zone being
> updated via ajax?
>
> Caused by: org.apache.tapestry.ioc.internal.util.TapestryException:
> Failure writing parameter 'value' of component BasicAjax:loop:
> Component BasicAjax is not rendering, so render variable 'string' may
> not be updated. [at classpath:joshcan/test/myapp/pages/BasicAjax.tml,
> line 10, column 49]
> at org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.writeParameter(InternalComponentResourcesImpl.java:273)
> at org.apache.tapestry.corelib.components.Loop._$update_parameter_value(Loop.java)
>
>
> Josh
>
>
> On Wed, Apr 9, 2008 at 10:19 AM, Josh Canfield <jo...@thedailytube.com> wrote:
> > You didn't mention if your list was updated using ajax? I have a
> > similar problem where a list that is updated in an updated zone is not
> > updated when I refresh the page. In my case it's ajax based search
> > results. Refreshing the page causes the old results to be left in the
> > page.
> >
> > It appears that cached properties are cleaned up during
> > postRenderCleanup. If you update the value during an ajax call then it
> > appears that the cleanup doesn't happen and the method is still cached
> > for until after next full page render (all future ajax calls return
> > the same value)
> >
> > I haven't looked to see if there is a jira issue filed already, but it
> > definitely seems like a defect.
> >
> > I hijacked Andy Blower's BasicAjax to demonstrate. Clicking the ajax
> > enabled links causes the date in the list to update the first time,
> > but subsequent clicks get no update. Reloading the page gives you the
> > last value, now clicking the links will update.
> >
> > <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
> > <body>
> >
> > <h1>Basic AJAX Tester (${count} - only updates on full page refresh)</h1>
> >
> > <a t:type="actionlink" t:id="outsideZone" href="#"
> > t:zone="aZone">Refresh - this is an AJAX-enabled
> > ActionLink</a><br/><br/>
> >
> >
> > <div t:type="zone" t:id="aZone">
> > <t:loop source="strings" value="string">
> > ${string}<br/>
> > </t:loop>
> > <p>I am a AJAX updated ZONE! count=${count}</p>
> > <a t:type="actionlink" t:id="insideZone" href="#"
> > t:zone="aZone">Refresh - this is an AJAX-enabled ActionLink inside the
> > zone</a><br/><br/>
> > </div>
> >
> > </body>
> > </html>
> >
> >
> > package joshcan.test.myapp.pages;
> >
> > import java.util.Date;
> >
> > import org.apache.tapestry.annotations.Cached;
> > import org.apache.tapestry.annotations.Component;
> > import org.apache.tapestry.annotations.Persist;
> > import org.apache.tapestry.annotations.Property;
> > import org.apache.tapestry.corelib.components.Zone;
> >
> > public class BasicAjax {
> > @Property
> > @Persist
> > private int count = 0;
> >
> > @Property
> > private String string;
> >
> > @Component
> > private Zone aZone;
> >
> > Object onActionFromOutsideZone() {
> > count++;
> > return aZone;
> > }
> >
> > Object onActionFromInsideZone() {
> > count++;
> > return aZone;
> > }
> >
> > @Cached
> > public String[] getStrings() {
> > return new String[] {
> > "Hello", new Date().toString()
> > };
> >
> > }
> > }
> >
> >
> >
> >
> >
> >
> > On Wed, Apr 9, 2008 at 8:45 AM, Peter Beshai <pe...@gmail.com> wrote:
> > > I have a problem where I am using a grid component to display the contents
> > > of a list retrieved from a database: sometimes after modifying the list, the
> > > page loads without refreshing the data.
> > >
> > > In my page:
> > >
> > > @Cached
> > > public List<MyEntity> getMyEntities()
> > > {
> > > return _myEntityDAO.findAll();
> > > }
> > >
> > >
> > > For instance, if I delete an item from the list using a control on that
> > > page, and the page refreshes, the list will still show the item. If I click
> > > refresh it will reload with the updated list. This only happens
> > > occasionally, but it does happen more often than not.
> > >
> > > Has anybody else encountered/fixed this?
> > >
> > >
> > > Thanks,
> > >
> > > Peter Beshai
> > >
> >
> >
> >
> > --
> > --
> > TheDailyTube.com. Sign up and get the best new videos on the internet
> > delivered fresh to your inbox.
> >
>
>
>
> --
> --
> TheDailyTube.com. Sign up and get the best new videos on the internet
> delivered fresh to your inbox.
>
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Re: [T5] Page loads before data is refreshed
Posted by Josh Canfield <jo...@thedailytube.com>.
> I am actually not using Ajax for this, and the problem occurs with or
> without the @Cached annotation.
Ok, I don't know enough about the grid component to know what else
might be happening. Does your method get called when you refresh the
page? Do you have a 2nd level cache enabled in hibernate that might be
caching that data?
Josh
On Wed, Apr 9, 2008 at 10:41 AM, Peter Beshai <pe...@gmail.com> wrote:
> Hi Josh,
>
> I am actually not using Ajax for this, and the problem occurs with or
> without the @Cached annotation.
>
> Peter
>
>
> On Wed, Apr 9, 2008 at 1:22 PM, Josh Canfield <jo...@thedailytube.com> wrote:
>
> > I also found that the var binding doesn't seem to work in a zone being
> > updated via ajax?
> >
> > Caused by: org.apache.tapestry.ioc.internal.util.TapestryException:
> > Failure writing parameter 'value' of component BasicAjax:loop:
> > Component BasicAjax is not rendering, so render variable 'string' may
> > not be updated. [at classpath:joshcan/test/myapp/pages/BasicAjax.tml,
> > line 10, column 49]
> > at
> > org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.writeParameter(InternalComponentResourcesImpl.java:273)
> > at
> > org.apache.tapestry.corelib.components.Loop._$update_parameter_value(Loop.java)
> >
> >
> > Josh
> >
> > On Wed, Apr 9, 2008 at 10:19 AM, Josh Canfield <jo...@thedailytube.com>
> > wrote:
> > > You didn't mention if your list was updated using ajax? I have a
> > > similar problem where a list that is updated in an updated zone is not
> > > updated when I refresh the page. In my case it's ajax based search
> > > results. Refreshing the page causes the old results to be left in the
> > > page.
> > >
> > > It appears that cached properties are cleaned up during
> > > postRenderCleanup. If you update the value during an ajax call then it
> > > appears that the cleanup doesn't happen and the method is still cached
> > > for until after next full page render (all future ajax calls return
> > > the same value)
> > >
> > > I haven't looked to see if there is a jira issue filed already, but it
> > > definitely seems like a defect.
> > >
> > > I hijacked Andy Blower's BasicAjax to demonstrate. Clicking the ajax
> > > enabled links causes the date in the list to update the first time,
> > > but subsequent clicks get no update. Reloading the page gives you the
> > > last value, now clicking the links will update.
> > >
> > > <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
> > > <body>
> > >
> > > <h1>Basic AJAX Tester (${count} - only updates on full page
> > refresh)</h1>
> > >
> > > <a t:type="actionlink" t:id="outsideZone" href="#"
> > > t:zone="aZone">Refresh - this is an AJAX-enabled
> > > ActionLink</a><br/><br/>
> > >
> > >
> > > <div t:type="zone" t:id="aZone">
> > > <t:loop source="strings" value="string">
> > > ${string}<br/>
> > > </t:loop>
> > > <p>I am a AJAX updated ZONE! count=${count}</p>
> > > <a t:type="actionlink" t:id="insideZone" href="#"
> > > t:zone="aZone">Refresh - this is an AJAX-enabled ActionLink inside the
> > > zone</a><br/><br/>
> > > </div>
> > >
> > > </body>
> > > </html>
> > >
> > >
> > > package joshcan.test.myapp.pages;
> > >
> > > import java.util.Date;
> > >
> > > import org.apache.tapestry.annotations.Cached;
> > > import org.apache.tapestry.annotations.Component;
> > > import org.apache.tapestry.annotations.Persist;
> > > import org.apache.tapestry.annotations.Property;
> > > import org.apache.tapestry.corelib.components.Zone;
> > >
> > > public class BasicAjax {
> > > @Property
> > > @Persist
> > > private int count = 0;
> > >
> > > @Property
> > > private String string;
> > >
> > > @Component
> > > private Zone aZone;
> > >
> > > Object onActionFromOutsideZone() {
> > > count++;
> > > return aZone;
> > > }
> > >
> > > Object onActionFromInsideZone() {
> > > count++;
> > > return aZone;
> > > }
> > >
> > > @Cached
> > > public String[] getStrings() {
> > > return new String[] {
> > > "Hello", new Date().toString()
> > > };
> > >
> > > }
> > > }
> > >
> > >
> > >
> > >
> > >
> > >
> > > On Wed, Apr 9, 2008 at 8:45 AM, Peter Beshai <pe...@gmail.com>
> > wrote:
> > > > I have a problem where I am using a grid component to display the
> > contents
> > > > of a list retrieved from a database: sometimes after modifying the
> > list, the
> > > > page loads without refreshing the data.
> > > >
> > > > In my page:
> > > >
> > > > @Cached
> > > > public List<MyEntity> getMyEntities()
> > > > {
> > > > return _myEntityDAO.findAll();
> > > > }
> > > >
> > > >
> > > > For instance, if I delete an item from the list using a control on
> > that
> > > > page, and the page refreshes, the list will still show the item. If I
> > click
> > > > refresh it will reload with the updated list. This only happens
> > > > occasionally, but it does happen more often than not.
> > > >
> > > > Has anybody else encountered/fixed this?
> > > >
> > > >
> > > > Thanks,
> > > >
> > > > Peter Beshai
> > > >
> > >
> > >
> > >
> > > --
> > > --
> > > TheDailyTube.com. Sign up and get the best new videos on the internet
> > > delivered fresh to your inbox.
> > >
> >
> >
> >
> > --
> > --
> > TheDailyTube.com. Sign up and get the best new videos on the internet
> > delivered fresh to your inbox.
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> > For additional commands, e-mail: users-help@tapestry.apache.org
> >
> >
>
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Re: [T5] Page loads before data is refreshed
Posted by Peter Beshai <pe...@gmail.com>.
Hi Josh,
I am actually not using Ajax for this, and the problem occurs with or
without the @Cached annotation.
Peter
On Wed, Apr 9, 2008 at 1:22 PM, Josh Canfield <jo...@thedailytube.com> wrote:
> I also found that the var binding doesn't seem to work in a zone being
> updated via ajax?
>
> Caused by: org.apache.tapestry.ioc.internal.util.TapestryException:
> Failure writing parameter 'value' of component BasicAjax:loop:
> Component BasicAjax is not rendering, so render variable 'string' may
> not be updated. [at classpath:joshcan/test/myapp/pages/BasicAjax.tml,
> line 10, column 49]
> at
> org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.writeParameter(InternalComponentResourcesImpl.java:273)
> at
> org.apache.tapestry.corelib.components.Loop._$update_parameter_value(Loop.java)
>
>
> Josh
>
> On Wed, Apr 9, 2008 at 10:19 AM, Josh Canfield <jo...@thedailytube.com>
> wrote:
> > You didn't mention if your list was updated using ajax? I have a
> > similar problem where a list that is updated in an updated zone is not
> > updated when I refresh the page. In my case it's ajax based search
> > results. Refreshing the page causes the old results to be left in the
> > page.
> >
> > It appears that cached properties are cleaned up during
> > postRenderCleanup. If you update the value during an ajax call then it
> > appears that the cleanup doesn't happen and the method is still cached
> > for until after next full page render (all future ajax calls return
> > the same value)
> >
> > I haven't looked to see if there is a jira issue filed already, but it
> > definitely seems like a defect.
> >
> > I hijacked Andy Blower's BasicAjax to demonstrate. Clicking the ajax
> > enabled links causes the date in the list to update the first time,
> > but subsequent clicks get no update. Reloading the page gives you the
> > last value, now clicking the links will update.
> >
> > <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
> > <body>
> >
> > <h1>Basic AJAX Tester (${count} - only updates on full page
> refresh)</h1>
> >
> > <a t:type="actionlink" t:id="outsideZone" href="#"
> > t:zone="aZone">Refresh - this is an AJAX-enabled
> > ActionLink</a><br/><br/>
> >
> >
> > <div t:type="zone" t:id="aZone">
> > <t:loop source="strings" value="string">
> > ${string}<br/>
> > </t:loop>
> > <p>I am a AJAX updated ZONE! count=${count}</p>
> > <a t:type="actionlink" t:id="insideZone" href="#"
> > t:zone="aZone">Refresh - this is an AJAX-enabled ActionLink inside the
> > zone</a><br/><br/>
> > </div>
> >
> > </body>
> > </html>
> >
> >
> > package joshcan.test.myapp.pages;
> >
> > import java.util.Date;
> >
> > import org.apache.tapestry.annotations.Cached;
> > import org.apache.tapestry.annotations.Component;
> > import org.apache.tapestry.annotations.Persist;
> > import org.apache.tapestry.annotations.Property;
> > import org.apache.tapestry.corelib.components.Zone;
> >
> > public class BasicAjax {
> > @Property
> > @Persist
> > private int count = 0;
> >
> > @Property
> > private String string;
> >
> > @Component
> > private Zone aZone;
> >
> > Object onActionFromOutsideZone() {
> > count++;
> > return aZone;
> > }
> >
> > Object onActionFromInsideZone() {
> > count++;
> > return aZone;
> > }
> >
> > @Cached
> > public String[] getStrings() {
> > return new String[] {
> > "Hello", new Date().toString()
> > };
> >
> > }
> > }
> >
> >
> >
> >
> >
> >
> > On Wed, Apr 9, 2008 at 8:45 AM, Peter Beshai <pe...@gmail.com>
> wrote:
> > > I have a problem where I am using a grid component to display the
> contents
> > > of a list retrieved from a database: sometimes after modifying the
> list, the
> > > page loads without refreshing the data.
> > >
> > > In my page:
> > >
> > > @Cached
> > > public List<MyEntity> getMyEntities()
> > > {
> > > return _myEntityDAO.findAll();
> > > }
> > >
> > >
> > > For instance, if I delete an item from the list using a control on
> that
> > > page, and the page refreshes, the list will still show the item. If I
> click
> > > refresh it will reload with the updated list. This only happens
> > > occasionally, but it does happen more often than not.
> > >
> > > Has anybody else encountered/fixed this?
> > >
> > >
> > > Thanks,
> > >
> > > Peter Beshai
> > >
> >
> >
> >
> > --
> > --
> > TheDailyTube.com. Sign up and get the best new videos on the internet
> > delivered fresh to your inbox.
> >
>
>
>
> --
> --
> TheDailyTube.com. Sign up and get the best new videos on the internet
> delivered fresh to your inbox.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
Re: [T5] Page loads before data is refreshed
Posted by Josh Canfield <jo...@thedailytube.com>.
I also found that the var binding doesn't seem to work in a zone being
updated via ajax?
Caused by: org.apache.tapestry.ioc.internal.util.TapestryException:
Failure writing parameter 'value' of component BasicAjax:loop:
Component BasicAjax is not rendering, so render variable 'string' may
not be updated. [at classpath:joshcan/test/myapp/pages/BasicAjax.tml,
line 10, column 49]
at org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.writeParameter(InternalComponentResourcesImpl.java:273)
at org.apache.tapestry.corelib.components.Loop._$update_parameter_value(Loop.java)
Josh
On Wed, Apr 9, 2008 at 10:19 AM, Josh Canfield <jo...@thedailytube.com> wrote:
> You didn't mention if your list was updated using ajax? I have a
> similar problem where a list that is updated in an updated zone is not
> updated when I refresh the page. In my case it's ajax based search
> results. Refreshing the page causes the old results to be left in the
> page.
>
> It appears that cached properties are cleaned up during
> postRenderCleanup. If you update the value during an ajax call then it
> appears that the cleanup doesn't happen and the method is still cached
> for until after next full page render (all future ajax calls return
> the same value)
>
> I haven't looked to see if there is a jira issue filed already, but it
> definitely seems like a defect.
>
> I hijacked Andy Blower's BasicAjax to demonstrate. Clicking the ajax
> enabled links causes the date in the list to update the first time,
> but subsequent clicks get no update. Reloading the page gives you the
> last value, now clicking the links will update.
>
> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
> <body>
>
> <h1>Basic AJAX Tester (${count} - only updates on full page refresh)</h1>
>
> <a t:type="actionlink" t:id="outsideZone" href="#"
> t:zone="aZone">Refresh - this is an AJAX-enabled
> ActionLink</a><br/><br/>
>
>
> <div t:type="zone" t:id="aZone">
> <t:loop source="strings" value="string">
> ${string}<br/>
> </t:loop>
> <p>I am a AJAX updated ZONE! count=${count}</p>
> <a t:type="actionlink" t:id="insideZone" href="#"
> t:zone="aZone">Refresh - this is an AJAX-enabled ActionLink inside the
> zone</a><br/><br/>
> </div>
>
> </body>
> </html>
>
>
> package joshcan.test.myapp.pages;
>
> import java.util.Date;
>
> import org.apache.tapestry.annotations.Cached;
> import org.apache.tapestry.annotations.Component;
> import org.apache.tapestry.annotations.Persist;
> import org.apache.tapestry.annotations.Property;
> import org.apache.tapestry.corelib.components.Zone;
>
> public class BasicAjax {
> @Property
> @Persist
> private int count = 0;
>
> @Property
> private String string;
>
> @Component
> private Zone aZone;
>
> Object onActionFromOutsideZone() {
> count++;
> return aZone;
> }
>
> Object onActionFromInsideZone() {
> count++;
> return aZone;
> }
>
> @Cached
> public String[] getStrings() {
> return new String[] {
> "Hello", new Date().toString()
> };
>
> }
> }
>
>
>
>
>
>
> On Wed, Apr 9, 2008 at 8:45 AM, Peter Beshai <pe...@gmail.com> wrote:
> > I have a problem where I am using a grid component to display the contents
> > of a list retrieved from a database: sometimes after modifying the list, the
> > page loads without refreshing the data.
> >
> > In my page:
> >
> > @Cached
> > public List<MyEntity> getMyEntities()
> > {
> > return _myEntityDAO.findAll();
> > }
> >
> >
> > For instance, if I delete an item from the list using a control on that
> > page, and the page refreshes, the list will still show the item. If I click
> > refresh it will reload with the updated list. This only happens
> > occasionally, but it does happen more often than not.
> >
> > Has anybody else encountered/fixed this?
> >
> >
> > Thanks,
> >
> > Peter Beshai
> >
>
>
>
> --
> --
> TheDailyTube.com. Sign up and get the best new videos on the internet
> delivered fresh to your inbox.
>
--
--
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delivered fresh to your inbox.
---------------------------------------------------------------------
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Re: [T5] Page loads before data is refreshed
Posted by Josh Canfield <jo...@thedailytube.com>.
You didn't mention if your list was updated using ajax? I have a
similar problem where a list that is updated in an updated zone is not
updated when I refresh the page. In my case it's ajax based search
results. Refreshing the page causes the old results to be left in the
page.
It appears that cached properties are cleaned up during
postRenderCleanup. If you update the value during an ajax call then it
appears that the cleanup doesn't happen and the method is still cached
for until after next full page render (all future ajax calls return
the same value)
I haven't looked to see if there is a jira issue filed already, but it
definitely seems like a defect.
I hijacked Andy Blower's BasicAjax to demonstrate. Clicking the ajax
enabled links causes the date in the list to update the first time,
but subsequent clicks get no update. Reloading the page gives you the
last value, now clicking the links will update.
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd">
<body>
<h1>Basic AJAX Tester (${count} - only updates on full page refresh)</h1>
<a t:type="actionlink" t:id="outsideZone" href="#"
t:zone="aZone">Refresh - this is an AJAX-enabled
ActionLink</a><br/><br/>
<div t:type="zone" t:id="aZone">
<t:loop source="strings" value="string">
${string}<br/>
</t:loop>
<p>I am a AJAX updated ZONE! count=${count}</p>
<a t:type="actionlink" t:id="insideZone" href="#"
t:zone="aZone">Refresh - this is an AJAX-enabled ActionLink inside the
zone</a><br/><br/>
</div>
</body>
</html>
package joshcan.test.myapp.pages;
import java.util.Date;
import org.apache.tapestry.annotations.Cached;
import org.apache.tapestry.annotations.Component;
import org.apache.tapestry.annotations.Persist;
import org.apache.tapestry.annotations.Property;
import org.apache.tapestry.corelib.components.Zone;
public class BasicAjax {
@Property
@Persist
private int count = 0;
@Property
private String string;
@Component
private Zone aZone;
Object onActionFromOutsideZone() {
count++;
return aZone;
}
Object onActionFromInsideZone() {
count++;
return aZone;
}
@Cached
public String[] getStrings() {
return new String[] {
"Hello", new Date().toString()
};
}
}
On Wed, Apr 9, 2008 at 8:45 AM, Peter Beshai <pe...@gmail.com> wrote:
> I have a problem where I am using a grid component to display the contents
> of a list retrieved from a database: sometimes after modifying the list, the
> page loads without refreshing the data.
>
> In my page:
>
> @Cached
> public List<MyEntity> getMyEntities()
> {
> return _myEntityDAO.findAll();
> }
>
>
> For instance, if I delete an item from the list using a control on that
> page, and the page refreshes, the list will still show the item. If I click
> refresh it will reload with the updated list. This only happens
> occasionally, but it does happen more often than not.
>
> Has anybody else encountered/fixed this?
>
>
> Thanks,
>
> Peter Beshai
>
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