BaseX-Talk December 2011

basex-talk@mailman.uni-konstanz.de

29 participants
46 discussions

Hi! form Mongolia
by Tuguldur J 03 Dec '11

03 Dec '11

Dear Sir, My name is Tuguldur from Mongolia. I am database architecturer of CSMS. So i want to develop BaseX to Mongolian language so much. I'm finally done, but the one thing i can't change that application name of 7.0.3 "beta" to 7.0.3 /"бета хувилбар" in Mongolian/. If it is done, one international version may has done. so please how can i fix that own problem.I look forward to your reply. thank you. Yours sincerely Bayangol district, 7-25 Ulaanbaatar, Mongolia

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running server commands from a script?
by C. M. Sperberg-McQueen 02 Dec '11

02 Dec '11

From time to time, I find myself wanting to run BaseX server commands from a shell script. For example, if I have two or three documents I'd like to add to a database, it's easy enough to do so from the GUI interface, or from the interactive server prompt. But if it's five or ten documents (and even more so if it's a few hundred or a few thousand documents), entering the commands interactively can become tedious and error prone. When the files are available on the local file system, I can use wildcards and I can add a directory at a time. But when the files are on a remote server and identified by URI instead of file name, I guess that won't work. What I think I'm looking for is the ability to specify a sequence of BaseX server commands and have it run that sequence of commands -- or some other way of being able to specify a list of filenames or URIs and have them all added to a given database. For example CREATE DATABASE demo OPEN demo ADD http://example.com/docs/a.xml ADD http://example.com/docs/b.xml ADD http://example.com/docs/c.xml ADD http://example.com/docs/d.xml ADD http://example.com/docs/e.xml ... ADD http://example.com/docs/z.xml RENAME http://example.com/docs/ / # I'd use ADD to a.xml http://example.com/docs/a.xml, but # that doesn't seem to have the effect I expect. But # RENAME works for what I need There is certainly a lot of BaseX documentation I have not read, but I have not found any mention of this kind of thing. Have I overlooked it? One technique that I guess would work would be to exploit the new REST interface (very nice, by the way!) and write a bash script that went something like this: curl http://localhost:8984/rest?command=CREATE+DATABASE+demo curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/a.xml curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/b.xml curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/c.xml curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/d.xml curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/e.xml ... curl http://localhost:8984/rest/demo?command=ADD+http://example.com/docs/z.xml curl http://localhost:8984/rest/demo?command=RENAME+http://example.com/docs/+/ or rather CURL="curl --user X:secretpasswd" $CURL http://localhost:8984/rest?command=CREATE+DATABASE+demo etc. But if there is s nicer way to handle this case, I'd be glad to learn about it. Perhaps this is when I should buckle down and learn how to do this kind of thing with XQuery Update? Thanks! Michael Sperberg-McQueen -- **************************************************************** * C. M. Sperberg-McQueen, Black Mesa Technologies LLC * http://www.blackmesatech.com * http://cmsmcq.com/mib * http://balisage.net ****************************************************************

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Re: [basex-talk] Insert position of attributes
by Dave Glick 02 Dec '11

02 Dec '11

After a little more investigation of the XQuery Update standard, it looks to me like BaseX is doing this right and the standard does not allow for positioning of attribute insertions (unless there's another approach I've overlooked). In case anyone else has a similar question - all insert operations involving attributes resolve to the function upd:insertAttributes which does not allow for positioning. It appears as though the modifiers "as first" and "as last" are ignored in the case of attributes. I suppose this makes sense if the ordering of attributes in XML is unimportant and undefined. Can anyone clarify what the XML/XDM standard has to say on the topic of attribute ordering? It's a little confusing because many XML processors attempt to present attributes with some kind of explicit ordering (as an example, see the .NET XmlAttributeCollection class which allows programmatic insertion of attributes before/after a reference attribute). Thanks (again), Dave From: Dave Glick Sent: Friday, December 02, 2011 12:37 PM To: basex-talk(a)mailman.uni-konstanz.de Subject: Insert position of attributes How would one go about inserting an attribute at a specific position (i.e., somewhere other than at the front of the attribute list)? I would expect the following expression would do the trick: "insert node attribute aname {'avalue'} as last into //XYZ" but it still inserts the attribute at the front of the attribute list. By looking at the code in the InsertAttribute update primitive, I can see that it's hardcoded to insert at the front of the attribute list. Does this mean that there is no way to control attribute insertion location? Does the XQuery Update standard not allow such an update or is this a bug/oversight on the part of BaseX? Thanks! Dave

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Insert position of attributes
by Dave Glick 02 Dec '11

02 Dec '11

How would one go about inserting an attribute at a specific position (i.e., somewhere other than at the front of the attribute list)? I would expect the following expression would do the trick: "insert node attribute aname {'avalue'} as last into //XYZ" but it still inserts the attribute at the front of the attribute list. By looking at the code in the InsertAttribute update primitive, I can see that it's hardcoded to insert at the front of the attribute list. Does this mean that there is no way to control attribute insertion location? Does the XQuery Update standard not allow such an update or is this a bug/oversight on the part of BaseX? Thanks! Dave

1 0

Writing output to multiple files
by Andreas Karpf 01 Dec '11

01 Dec '11

Dear BaseX Team! After several unfortunately unsuccessful trials & errors I am appealing to with a question which should be easy for you to answer, as I think it is pretty basic. I have a BaseX database filled up with thousands of different but equally structured xml-documents. What I want to do is to parse out necessary information and transform that into html files with distinct names. Actually I can parse out all the information I want but the output at the moment is just one huge html-file. The corresponding xquery looks something like this (I just left the parts in there which seem in my opinion relevant for my question, for real the whole xquery files is much much longer) declare option output:method "html"; (:Define word count function:) declare namespace functx = "http://www.functx.com"; declare function functx:word-count ($arg as xs:string?) as xs:integer {count(tokenize($arg,'\W+')[. != ''])}; let $items:= for $docitem in .//docitem where (:Text length (number of tokens):) for $text in $docitem/text where functx:word-count($text)<250 return (:Language :) for $language in $docitem/@xml:lang where $language="en" return <html> <body> <h3>{data($docitem/headline/text())}</h3> {$docitem/text/p/text()} <br>ID: {data($docitem/@itemid)}</br> <br>Word count:{functx:word-count($text)}</br> </body> </html> return file:write("//htmlfolder/file.html", $items) At the moment I just get all the parsed out elements in one if also well structured html file. What I however want would be multiple html files as output which have a filename like "itemid.htm" from $docitem/@itemid which is a distinct and exact identifier for all the xml files in the database. how can I achieve that. I have tried it with something like the following, but it won't work and I don't arrive to figue it out why: let $docitem:= .//docitem let $doc_id := data($docitem/@itemid) let $documentname := concat('//htmlfolder/', $doc_id, '.html') return file:write($documentname, $items) BaseX always tells me that "no sequences are allowed regarding $docitem/@itemid". What could be the problem there, or how could I solve this problem. I have tried several combinations because from what I have found on the web regarding my problem the solution should go into a similar direction. Would please somebody of you be so nice to help me with that. Every hint would be very much appreciated! Best regards, Andreas

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namespace limit?
by C. M. Sperberg-McQueen 01 Dec '11

01 Dec '11

Greetings! I've just downloaded BaseX 7.0.2, and was very happy to see the checkbox for "Skip corrupt (non-well-formed) files", since it makes it much much easier to create a BaseX database of the XSD test suite. But my attempt to build the database still fails with the message "idI001.xsd" (Line 2): Too many different namespaces (limit: 256). Since document idI001.xsd only declares 5 namespaces, I guess the 256-namespace limit is for the database, not for an individual document. Is there any way to ease the limit, or do I have to contemplate making multiple databases, each covering just part of the test suite? Thank you! Michael Sperberg-McQueen -- **************************************************************** * C. M. Sperberg-McQueen, Black Mesa Technologies LLC * http://www.blackmesatech.com * http://cmsmcq.com/mib * http://balisage.net ****************************************************************

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BaseX-Talk December 2011