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https://issues.apache.org/jira/browse/DERBY-791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12743266#action_12743266
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Rick Hillegas edited comment on DERBY-791 at 8/14/09 9:17 AM:
--------------------------------------------------------------

Attaching another rev of the XmlTreeWalker. This version uses an in-memory 
database.

      was (Author: rhillegas):
    Attaching a second rev of the XmlTreeWalker. This version uses an in-memory 
database.
  
> Expose api for printing Abstract Syntax Trees in production (non-debug) 
> servers
> -------------------------------------------------------------------------------
>
>                 Key: DERBY-791
>                 URL: https://issues.apache.org/jira/browse/DERBY-791
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Rick Hillegas
>         Attachments: derby-791-01-aa-fromListAndResultColumnList.diff, 
> XmlTreeWalker.java, XmlTreeWalker.java, XmlTreeWalker.java, z.xml
>
>
> Currently you can print Abstract Syntax Trees to derby.log by setting the 
> DumpParseTree tracepoint at server startup. E.g.:
> java -cp $CLASSPATH -Dderby.debug.true=DumpParseTree 
> -Dderby.stream.error.logSeverityLevel=0 org.apache.derby.tools.ij  z.sql
> This can be a useful debugging tool. However, it only works on debug servers 
> built with the following flags:
> sanity=true
> debug=true
> We should provide some mechanism for printing these trees in production 
> (non-debug) servers.

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