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https://issues.apache.org/jira/browse/DERBY-4415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-4415:
---------------------------------
Attachment: ASTInspector.java
Attaching a new version of the ASTInspector. This version was tweaked to
function as a custom, optional tool. If other people find this tool to be
useful, we could productize it and document it. To load and unload the
XmlASTPrinter, you now do the following:
call syscs_util.syscs_register_tool( 'customTool', true, 'ASTInspector',
'XmlASTPrinter' );
call syscs_util.syscs_register_tool( 'customTool', false, 'ASTInspector' );
Here's a little script which shows how to use this tool:
connect 'jdbc:derby:memory:dummy;create=true';
create table t( a int );
call syscs_util.syscs_register_tool( 'customTool', true, 'ASTInspector',
'XmlASTPrinter' );
select * from t;
call syscs_util.syscs_register_tool( 'customTool', false, 'ASTInspector' );
-- now look for the output in derbyAST.xml
> Make it easy to plug custom AST printers into the compiler
> ----------------------------------------------------------
>
> Key: DERBY-4415
> URL: https://issues.apache.org/jira/browse/DERBY-4415
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Priority: Minor
> Fix For: 10.6.1.0
>
> Attachments: ASTInspector.java, ASTInspector.java, ASTInspector.java,
> derby-4415-01-aa-customASTprinters.diff,
> derby-4415-01-ab-customASTprinters.diff, XmlASTPrinter.java,
> XmlASTPrinter.java, XmlASTPrinter.java, XmlASTPrinter.java
>
>
> It would be nice to be able to tell the compiler to use user-written
> formatters for pretty-printing Derby's abstract syntax trees. For instance,
> it would be nice to be able to plug in the AST printers attached to
> DERBY-791, including the Eclipse-based tree grapher written by Kay Röpke.
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