Transquery (Was - Re: XQuery in dbXML)

[Peter Elliott <ax...@paradise.net.nz>]

Hi all
just a little footnote to Murray's succinct summation of the XQuery situation (pardon the alliteration). 

Evan Lenz has been working on a spec for what he's called Transquery - which aims to provide a means of manipulating xml database content using xslt.
more info is available at:
	http://transquery.org

This is still in its early stages and most of the action has been taking place on the mail list. archives for those interested are at:
	 http://lists.oasis-open.org/archives/transquery-discuss

Has anyone here been looking at this with regards to possible use in/with xindice?

cheers
peter

===============================
Tue, 18 Dec 2001 09:46:08 -0800
Murray Altheim <mu...@sun.com> wrote:

> {...... massive_snip .......]
> There's also XSLT itself as a 
> mechanism for manipulating XML database content.
> 

Becoming OT Re: Transquery (Was - Re: XQuery in dbXML)

[Peter Elliott <ax...@paradise.net.nz>]

On Thu, 20 Dec 2001 15:13:58 -0700
Kimbro Staken <ks...@dbxmlgroup.com> wrote:

> This hasn't really been considered.
> 
> My personal opinion on it is that XSL-T is awfully cumbersome to write for 
> use as a query language. XUpdate is cumbersome enough and I actually find 
> Transquery to be even worse. I'm not a particularly big fan of XQuery 
> either, but the syntax is at least a little more friendly, even if still 
> rather cumbersome. The fact that it reinvents the wheel is a separate 
> issue.
> 
>

Yes. this cumbersomeness/here-goes-the-wheel-again is something that 'bothers' a lot of people, self included, not just with XQuery either but a lot of the w3c specs of recent times. going by traffic on xmldev and places i think there's a real and growing need for an effort to extract whatever ore exists in the path/link/pointer/query/x spec-mountain and ....
but then who has the resources, not to mention the inclination, to undertake such a Sisyphean task?

fortunately(?) we do have the Best Practice guidelines to help out when the specghetti gets a bit too much to handle.

cheers
peter
PS: congrats to you and tom on succesful initiation to apache nation.

can any body help me (this Problem with crimson.jar)

[Srinivas Suram <sr...@pinnacleinfo-sys.com>]

  Hi,
Iam a Java developer woking in Pinnacle Info Solutions,Chennai,India on
server side of a palmtop based project.
I have to handle incoming requests(XML stream) coming over XML-RPC from
various devices.
Iam using sun's crimson parser using JAXP to parse XML documents.Iam using
SAX for parsing
When i get an XML String with UTF-16LE XMLReader is unable to parse and is
saying that the
"Document Root Element is missing".
The Xml String received from Client(WinCE)is as follows:
String sXml="< ? x m l   v e r s i o n = \"1.0\" ? >< t l m e s s a g e > <
t l v e r s i o n > 1 . 0 < / t l v e r s i o n > < t l a p pl i c a t i o n
> A P P I D 1 2 < / t l a p p l i c a t i o n > < t l c l i e nt I d > C E C
I D 1 < / t l c l i e n t I d > < / t l m e s s a g e >";
The String is converted to InputStream using:
InputStream is = new ByteArrayInputStream(sXml.getBytes());
Hashtable hT = XmlHandler.getParsedData(is);

Iam sending the code snippet of the method that is used to parse the Xml
InputStream

		public Hashtable getParsedData(InputStream is)
		{
	      XMLReader xmlReader = null;
		SAXParserFactory spf = SAXParserFactory.newInstance();
		SAXParser saxParser = spf.newSAXParser();
		// Get the encapsulated SAX XMLReader
            xmlReader = saxParser.getXMLReader();
		xmlReader.setContentHandler(new XMLHandler());
            InputSource ist = new InputSource(is);
		xmlReader.parse(ist);
		}

When i use Xerces.jar the SAX parser is able to parse the same Xml String
When i set the encoding as ist.setEncoding("UTF-16") an exception like
"Missing Byte Order Mark" is coming.

with regards
Srinivas.s

Joins in XML

[Marek Mosiewicz <ma...@talex.com.pl>]

Is there any way to define join in XPath query. I know that there is a lot
of examples where I can include data as collection in main XML document but
any way sometimes there is need to have join to independent documents. How
could I do that ?

Re: Transquery (Was - Re: XQuery in dbXML)

[Kimbro Staken <ks...@dbxmlgroup.com>]

This hasn't really been considered.

My personal opinion on it is that XSL-T is awfully cumbersome to write for 
use as a query language. XUpdate is cumbersome enough and I actually find 
Transquery to be even worse. I'm not a particularly big fan of XQuery 
either, but the syntax is at least a little more friendly, even if still 
rather cumbersome. The fact that it reinvents the wheel is a separate 
issue.

I'd be happy to change my mind if an implementation were to emerge that 
proved usable.

On Tuesday, December 18, 2001, at 04:59 PM, Peter Elliott wrote:

> Hi all
> just a little footnote to Murray's succinct summation of the XQuery 
> situation (pardon the alliteration).
>
> Evan Lenz has been working on a spec for what he's called Transquery - 
> which aims to provide a means of manipulating xml database content using 
> xslt.
> more info is available at:
> 	http://transquery.org
>
> This is still in its early stages and most of the action has been taking 
> place on the mail list. archives for those interested are at:
> 	 http://lists.oasis-open.org/archives/transquery-discuss
>
> Has anyone here been looking at this with regards to possible use in/with 
> xindice?
>
> cheers
> peter
>
> ===============================
> Tue, 18 Dec 2001 09:46:08 -0800
> Murray Altheim <mu...@sun.com> wrote:
>
>> {...... massive_snip .......]
>> There's also XSLT itself as a
>> mechanism for manipulating XML database content.
>>
>
>
Kimbro Staken
XML Database Software, Consulting and Writing
http://www.xmldatabases.org/