Why is @PageLink "incompatible" with @ActionLink?

[Øyvind Harboe <oy...@zylin.com>]

In the example below, I get a "Stale Session error" the second time
I click "Increment".

- If I remove the @PageLink, "Increment" the error goes away.
- If I move the @PageLink after the @ActionLink the error goes away.
- If I change from @ActionLink to @LinkSubmit (and add a @Form),
  the error goes away.

Why?

I relatively new to Tapestry(read TIA, written a dozen Tapestry pages),
but tought I had the session business sorted. Obviously not. 

I'm using

Debian
Tapestry 3.0.3
Spindle
JettyLauncher



<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE page-specification PUBLIC
  "-//Apache Software Foundation//Tapestry Specification 3.0//EN"
  "http://jakarta.apache.org/tapestry/dtd/Tapestry_3_0.dtd">
<!-- generated by Spindle, http://spindle.sourceforge.net -->

<page-specification class="test.TestCounter">
    <property-specification name="counter" type="int" persistent="yes"/>
</page-specification>


<html>
<body>
    <span jwcid="@PageLink" page="TestCounter">Jump to page</span>
    Counter is: <span jwcid="@Insert" value="ognl:counter"/>
    <p>
    <span jwcid="@ActionLink" listener="ognl:listeners.increment">
        Increment</span>
</body>
</html>

package test;

import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.html.BasePage;

public abstract class TestCounter extends BasePage
{
	
	public abstract int getCounter();
	
	public abstract void setCounter(int x);
	
	public void increment(IRequestCycle cycle)
	{
		setCounter(getCounter()+1);
		cycle.activate("TestCounter");
	}
}

-- 
Øyvind Harboe
http://www.zylin.com


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