Giacomo Pati wrote:
On Wed, 4 Dec 2002, Stefano Mazzocchi wrote:Semantically speaking, this is a _really good_ idea, but... it unfortunately cannot be implemented that way :(
I think Sylvain has a point. I'm not sure I like 'sendPageAndReturn'As you said above the function does two things:
that much, but it's true that 'sendPage' contains less semantic meaning
than 'sendPageAndWait' and therefore might become a little confusing at
first. It's a little bit semantically unbalanced and this doesn't
reflect in their functional operation.
So, let's see, that method is supposed to 'send a page' to the client
but is not going to wait for the client to come back and continue. So,
the real name would be something like
- sendPageAndDontWait
but that sucks.
- sendPageAndReturn
is nice but only if you understand that the flow layer takes control
over the sitemap and that 'return' means that you are returning from
procedural continuation-based control (the flowscript) to declerative
request driven control (the sitemap)
So it does have perfect sense for us, but I'm not sure it does for
somebody that looks at the flowscript for the first time.
But I can't come up with anything better because
- sendPageAndExit
might be even worse (people might think Cocoon might stop!)
Any idea?
1. send a page
2. does not wait
So, how about splitting it into two function:
- sendPage
- getAnswer
The reason is that suspending the flow (with getAnswer) involves creating a continuation object, and that the page that is displayed (with sendPage) must know the ID of that continuation in order to put it in page links or form actions that will later on resume that continuation.
So you would need in "sendPage" an information that is given later by "getAnswer". Chicken and egg problem which requires merging into a single function the operations of sending a page and waiting (or not) for the user's input.
See o/a/c.components/flow/javascript/system.js for more details.
Too bad...
Sylvain
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Sylvain Wallez Anyware Technologies
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