Use a Deterministic Technique for Generated Attributes
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Key: STS-562
URL: http://www.stripesframework.org/jira/browse/STS-562
Project: Stripes
Issue Type: Improvement
Components: Tag Library
Affects Versions: Release 1.4.3
Reporter: Walter Rumsby
Priority: Minor
We created a servlet filter to provide a shallow implementation of ETags
similar to the one described in http://www.infoq.com/articles/etags
When we applied this to a page that used a stripes:form with attribute focus=""
we noticed that the filter was not working as we expected to and quickly
realised that the issue was that the first field in the form did not have an
explicit id attribute so Stripes was generating a random id in order to focus
the first field in the form. This meant that the content of the response
changed between requests and our so our ETag changed meaning a 304 would never
be sent back to the client. If the generated ids were generated using a
deterministic approach so that they were the same for every request this
problem would be avoided.
A simple work around for this scenario is to explicitly set the id of the first
field.
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