s:link with propagation="join" on expired conversation

[javacoryd]

This seems like a bug to me.

If I click a s:link which has has "propagation=join" and the conversation no longer exists, Seam should generate the conversation has ended... message.  Instead, a new conversation is created which doesn't make sense.

Is this a bug?

Thanks,

Cory.

[ericjava.eric.chiralsoftware.net]

It makes sense and it's not a bug.

join is a sub-set of begin,

-------------

One-day Seam Seminar, Dec 8, Los Angeles

[javacoryd]

Yes, I guess that does make sense.

Is there any way in which you can make an s:link behave, such that, if the conversation ( identified by the conversation id parameter ) is now gone that it doesn't start a new one?

Thanks,

Cory.

[ericjava.eric.chiralsoftware.net]

Yes, it's possible.  There may be other ways, but the way that comes to mind for me is to use a value binding, like this:

<s:link propagation="#{org.jboss.seam.core.conversation.longRunning ? 'join' : 'none'}" .... />

I haven't tested it but I assume that would do what you want.

But be certain that this is what you really want to happen before you do it.

[javacoryd]

The problem I'm trying to solve is where we have an expired conversation that no longer exists.  At the time the page is generated, the conversation does exist, but ( a while later ) when a link or form button is pressed, the conversation no longer exists.

If the form button is pressed, we get the expected your conversation has expired message, which is great.  If a <s:link> is pressed, Seam starts a new conversation, which is bad.

Thanks,

Cory.