PPR + State Management: reuse state tokens while PPRing to avoid flushing the
cache
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Key: TRINIDAD-116
URL: https://issues.apache.org/jira/browse/TRINIDAD-116
Project: MyFaces Trinidad
Issue Type: Improvement
Affects Versions: 1.0.1-core
Reporter: Adam Winer
Assignee: Adam Winer
Today, if you have the following series of requests:
1. Page A
2. PPR #1 on A
3. Page B
4. PPR #1 on B
5. PPR #2 on B
You get the following state tokens in the page:
Request Token
1. Page A 1
2. PPR #1 on A 2
3. Page B 3
4. PPR #1 on B 4
5. PPR #2 on B 5
But, say we've configured Trinidad down to save only two
state tokens (just for the sake of the example). Click
the back button after request #5, and we'll be on Page A
with state token 2 - but that token is gone, even though
we've only gone back one page!
What's lame here is that with PPR, we're caching all sorts
of state tokens that are totally inaccessible (there's no way to
get back to tokens 1, 3, or 4 after their respective requests).
So: why not just reuse the existing state token on PPR?
Request Token
1. Page A 1
2. PPR #1 on A 1
3. Page B 2
4. PPR #1 on B 2
5. PPR #2 on B 2
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