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https://issues.apache.org/jira/browse/DERBY-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dag H. Wanvik updated DERBY-4087:
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Attachment: derby-4087-a.stat
derby-4087-a.diff
Uploading a patch that addresses these issues, derby-4087-a. I have tried to
ensure correctness by
making lots of manual queries and inspecting the dumped trees for readability.
To me the trees look more consistent and readable with the patch, but there are
many changes so its quite possible
I made some errors in the process. If people think it's OK, further tweaks can
be done later now that we have a
more consistent use of the patterns.
Since this all concerns code used used for debugging, there are presently no
tests.
The regressions ran OK at least (hardly surprising) ;-)
> Clean up debug printing of the abstract syntax trees after parsing, binding
> and optimization
> ---------------------------------------------------------------------------------------------
>
> Key: DERBY-4087
> URL: https://issues.apache.org/jira/browse/DERBY-4087
> Project: Derby
> Issue Type: Improvement
> Components: Miscellaneous, SQL
> Reporter: Dag H. Wanvik
> Assignee: Dag H. Wanvik
> Priority: Trivial
> Attachments: derby-4087-a.diff, derby-4087-a.stat
>
>
> Currently, the printing is often inconsistent:
> - some subtrees not printed
> - wrong indentation due to missing newlines, or lacking level increments
> - redundant printing of subtrees (AST is really a DAG, would be nice to print
> only once and then refer back to show aliasing)
> - some items printed twice due to inconsistent usage of pattern
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