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Posted to users@tapestry.apache.org by Ruud Diterwich <rd...@cedron.com> on 2003/06/23 13:10:13 UTC
persistent properties
I've just started discovering Tapestry, and I think I'm missing some
basic concepts regarding component state. Can anyone explain me why this
example does not work?
*** MyEdit.page ***
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE page-specification PUBLIC
"-//Howard Lewis Ship//Tapestry Specification 1.3//EN"
"http://tapestry.sf.net/dtd/Tapestry_1_3.dtd">
<page-specification class="com.cedron.dmc.gui.pages.MyEdit">
<property-specification name="count" initial-value="0"
type="int" persistent="false"/>
</page-specification>
*** MyEdit.html ***
<html>
value: <span jwcid="@Insert" value="ognl:count"/>
<span jwcid="@ActionLink"
listener="ognl:listeners.incrementCount">increment</span>
</html>
*** MyEdit.java ***
package com.myproduct.gui.pages;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.html.BasePage;
public abstract class MyEdit extends BasePage {
public abstract int getCount();
public abstract void setCount(int count);
public void incrementCount(IRequestCycle cycle) {
setCount(getCount() + 1);
}
}
The count is updated one, from 0 to 1, but successive clicks keep the
counter on 1!
Thanks!
Ruud Diterwich
RE: persistent properties
Posted by Ruud Diterwich <rd...@cedron.com>.
Thanks! Silly, Boolean values are "yes" and "no" apparently.
-----Original Message-----
From: Geoff Longman [mailto:glongman@intelligentworks.com]
Sent: Monday, June 23, 2003 13:15
To: Tapestry users
Subject: Re: persistent properties
The property specification indicates that count is not persistent.
> <property-specification name="count" initial-value="0"
> type="int" persistent="false"/>
^^^^^^^^^^^^
thus, the count is reset to 0 after every request (click). change
persitent
to 'yes'.
Geoff
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Re: persistent properties
Posted by Geoff Longman <gl...@intelligentworks.com>.
The property specification indicates that count is not persistent.
> <property-specification name="count" initial-value="0"
> type="int" persistent="false"/>
^^^^^^^^^^^^
thus, the count is reset to 0 after every request (click). change persitent
to 'yes'.
Geoff
RE: persistent properties
Posted by Ruud Diterwich <rd...@cedron.com>.
Sorry, there was a mistake in the example: the property specification
should have the persistent attribute set to true, of course:
<property-specification name="count" initial-value="0"
type="int" persistent="true"/>
Even with persistent set to true, the count seems to be reset to 0 on
each click!
Ruud Diterwich
-----Original Message-----
From: Ruud Diterwich [mailto:rditerwich@cedron.com]
Sent: Monday, June 23, 2003 13:10
To: tapestry-user@jakarta.apache.org
Subject: persistent properties
I've just started discovering Tapestry, and I think I'm missing some
basic concepts regarding component state. Can anyone explain me why this
example does not work?
*** MyEdit.page ***
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE page-specification PUBLIC
"-//Howard Lewis Ship//Tapestry Specification 1.3//EN"
"http://tapestry.sf.net/dtd/Tapestry_1_3.dtd">
<page-specification class="com.cedron.dmc.gui.pages.MyEdit">
<property-specification name="count" initial-value="0"
type="int" persistent="false"/>
</page-specification>
*** MyEdit.html ***
<html>
value: <span jwcid="@Insert" value="ognl:count"/>
<span jwcid="@ActionLink"
listener="ognl:listeners.incrementCount">increment</span>
</html>
*** MyEdit.java ***
package com.myproduct.gui.pages;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.html.BasePage;
public abstract class MyEdit extends BasePage {
public abstract int getCount();
public abstract void setCount(int count);
public void incrementCount(IRequestCycle cycle) {
setCount(getCount() + 1);
}
}
The count is updated one, from 0 to 1, but successive clicks keep the
counter on 1!
Thanks!
Ruud Diterwich
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