[ http://issues.apache.org/jira/browse/DERBY-688?page=comments#action_12426673 ]
Bryan Pendleton commented on DERBY-688:
---------------------------------------
Committed d688_phase2_v1_code.patch and d688_phase2_v3_tests.patch
to subversion as revision 429764.
I committed both patches as a single revision according to Army's suggestion above:
> When committed, though, *both* patches should be committed together in order to avoid
test diffs.
> Enhancements to XML functionality to move toward XPath/XQuery support...
> ------------------------------------------------------------------------
>
> Key: DERBY-688
> URL: http://issues.apache.org/jira/browse/DERBY-688
> Project: Derby
> Issue Type: Improvement
> Components: SQL, JDBC
> Reporter: A B
> Assigned To: A B
> Priority: Minor
> Attachments: d688_phase1_v1.patch, d688_phase1_v1.stat, d688_phase1_v2.patch,
d688_phase1_v3.patch, d688_phase2_v1_code.patch, d688_phase2_v1_tests.patch, d688_phase2_v2_tests.patch,
d688_phase2_v3_tests.patch, d688_phase3_v1_code.patch, d688_phase3_v1_tests.patch, derbyXMLSpec.html
>
>
> As of DERBY-334, Derby has some very basic support for XML that consists of an XML datatype
and three operators (XMLPARSE, XMLSERIALIZE, and XMLEXISTS). I would like to enhance this
existing functionality and, by doing so, help to move Derby incrementally toward a more usable
and more complete XPath/XQuery solution (with emphasis on "incrementally").
> I have attached to this issue a document describing the particular changes that I am
looking to make. At a high level, they consist of:
> 1) Making it easier to use the XML operators and datatype from within JDBC (ex. by implicit
parsing/serialization of XML values).
> 2) Adding a new operator, XMLQUERY, to allow a user to retrieve the results of an XPath
expression (instead of just determining whether or not the expression evaluates to an empty
sequence, which is what XMLEXISTS does).
> 3) Making changes to the existing operators to line them up with the SQL/XML 2005 specification,
and also to take steps toward my eventual hope of having support for XQuery (as opposed to
just XPath) in Derby.
> If anyone has time and interest enough to look at the document and provide feedback,
that'd be great...
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