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From "A B (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-688) Enhancements to XML functionality to move toward XPath/XQuery support...
Date Tue, 08 Nov 2005 01:37:21 GMT
     [ http://issues.apache.org/jira/browse/DERBY-688?page=all ]

A B updated DERBY-688:
----------------------

    Attachment: derbyXMLSpec.html

> Enhancements to XML functionality to move toward XPath/XQuery support...
> ------------------------------------------------------------------------
>
>          Key: DERBY-688
>          URL: http://issues.apache.org/jira/browse/DERBY-688
>      Project: Derby
>         Type: Improvement
>   Components: JDBC, SQL
>     Reporter: A B
>     Assignee: A B
>     Priority: Minor
>  Attachments: 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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