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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4087) Clean up debug printing of the abstract syntax trees after parsing, binding and optimization
Date Thu, 27 Aug 2009 20:17:59 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12748550#action_12748550
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Dag H. Wanvik commented on DERBY-4087:
--------------------------------------

Temporarily rolled back changes to the result set statistics printing due to broken masters
in old harness lang suite:

 java/engine/org/apache/derby/impl/sql/execute/rts/RealDistinctScanStatistics.java
 java/engine/org/apache/derby/impl/sql/execute/rts/RealHashScanStatistics.java
 java/engine/org/apache/derby/impl/sql/execute/rts/RealTableScanStatistics.java

svn revision 808601. Will make a new patch with modified masters to match the printing improvements.



> 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, derby-4087-b.diff, derby-4087-b.stat,
dumpquery, sample.log
>
>
> 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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