BaseX-Talk

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6 participants
5269 discussions

add to database basexclient - skip non-well formed xml files
by Jarosław Kowalewski 25 Jul '12

25 Jul '12

Hi, how can I skip non-well formed xml files in command line import. Basexclient add. With basexgui it's possible. thx Jarek

2 4

namespace bug in BaseX 7.3 - produces invalid XML
by Godmar Back 24 Jul '12

24 Jul '12

After upgrading to 7.3, our application broke. BaseX returns this (ill-formed) XML: <result-extract> <libx:body xmlns:libx="http://libx.org/xml/libx2" xmlns=" http://www.w3.org/2005/Atom">... that searches by ISBN */ var cue = new libx.cues.CatalogCue('i', tuple.isbn); cue.insertBefore(tuple.position); cue.image.setAttribute('width', '16'...</libx:body> </result-extract> resulting in: [Fatal Error] :61:237: Attribute "xmlns" bound to namespace " http://www.w3.org/2005/Atom/" was already specified for element "mark". The wrong XML appears numerous times inside tag. A element should not have more than one xmlns= attribute (why it has any, btw, I don't understand). The ill-formed output appears to be produced by the 'ft:extract()' function; here's an excerpt from the XQuery: for $extract in $entry/descendant::*[text() contains text "ISBN"] return <result-extract>{ft:extract($extract[text() contains text "ISBN"])}</result-extract> This is a show stopper that prevents us from upgrading to 7.3, obviously - let me know if you can fix this with the information provided, or if you need a complete test case. Is this issue fixed in the last snapshot? - Godmar

3 9

Validation using xs:include
by Huib Verweij 24 Jul '12

24 Jul '12

Hi, I am trying to use the excellent validation function. It used to work great, however, recently we added a xs:include statement. Now the validator can't find the included schema (that is located in the same directory as the including schema). I think the validator is missing a ResourceResolver. It works fine though if I include an absolute path. But absolute paths tend to only work on one machine. Any help is much appreciated. Hartelijke groet, Huib Verweij. Verstuurd vanaf mijn iPhone

2 3

Context node required problem
by John Morin 24 Jul '12

24 Jul '12

Hi I am trying to pass a string to my XQuery as a parameter, $input below. It seems that the string is not being interpreted as XML as I get the following message when I run the query from my .Net client: Stopped at line 14, column 68: [XPTY0019] Context node required for sglines; xs:string found. I believe I don't have the syntax of "declare context item as element(sglines) := document {$input/sglines};" quite right, and maybe " for $i in //line" The XML I am passing in as a parameter is: <sglines> <line lineId="41" note="1064"/> <line lineId="3" note="0"/> <line lineId="5" note="0"/> <line lineId="7" note="0"/> <line lineId="11" note="0"/> <line lineId="12" note="0"/> <line lineId="33" note="0"/> <line lineId="80" note="0"/> <line lineId="34" note="0"/> <line lineId="50" note="0"/> <line lineId="51" note="0"/> <line lineId="52" note="0"/> <line lineId="60" note="0"/> <line lineId="61" note="0"/> <line lineId="80" note="0"/> </sglines> Help would be much appreciated. Thanks Best regards John Morin declare namespace dp = "http://www.autodata.ltd.uk/namespaces/content-aggregation"; declare namespace ad = "http://autodata.ltd.uk/technical_topic"; (: return a deep copy of the element withouth namespaces :) declare namespace xf = "http://tempuri.org/vijfhuizen/com/myMessage/"; declare variable $input external; declare context item as element(sglines) := document {$input/sglines}; declare function xf:strip-namespace($e as element()) as element() { element { xs:QName(local-name($e)) } { for $child in $e/(@*,node()) return if ($child instance of element()) then xf:strip-namespace($child) else $child } }; let $sgline := $input return <aggregation> { for $i in //line let $id := $i/@lineId let $note := $i/@note let $elm := //dp:aggregation let $data := $elm/dp:content[@dataLineId=$id and @noteNumber=$note] return if(fn:empty($data)) then "" else xf:strip-namespace($data) } </aggregation> IMPORTANT NOTICE: This email and any attachments are confidential and are protected by copyright and/or database rights and are intended for the addressee only. If you are not the named recipient, you must not use, disclose, reproduce, copy or distribute the contents of this communication. If you have received this in error, please contact the sender and then delete this email from your system. The integrity of email across the Internet cannot be guaranteed. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of email transmission. Although Autodata Limited has taken precautions to ensure no viruses are present in this email or any attachments, the company cannot accept any responsibility for any loss or damage arising from the use of this email or attachments. Autodata Limited, Priors Way, Maidenhead Berkshire, SL6 2HP, England, UK. Registered as a limited company in England, UK. Registration number 1062717. VAT number GB 208 4782 54 000.

2 3

EXPath File Module
by Christian Grün 23 Jul '12

23 Jul '12

Hi all, the most recent version of the File Module has now been published on EXPath: http://expath.org/spec/file You may be interested to hear that the EXPath Project is now an official W3 Community Group: http://www.w3.org/community/expath/ This increases the chance that other XQuery Processors will also implement this and forthcoming modules: All the best, Christian PS: BaseX 7.4 can be expected in August or September.

1 0

Question concerning querying cyclic network xml-structure.
by Rob 20 Jul '12

20 Jul '12

Hi, Can you please help me solving a challenge I have with a specific type XML-query? Ive a bunch of XML-files that are referencing each other. So, a XML-file can reference to multiple XML-files and a XML-file can be referenced to by multiple XML-files. This whole reference-structure could be cyclic. Actually an m:n relationship between XML-files with possible cyclic structure. The standard solution would be to build a recursive-routine for processing an XML-file that, before actually processing the XML-file, checks in some way, for example with some sort of file-in-process-buffer, if the XML-file isnt already being processed. If not store the name in this buffer, processes the XML-file and initiate the recursive routine for the referenced XML-files. A structure like this (not real code (at all)): ============================================================== INSTANTIATE Guard FROM COLLECTION PROCESS-RECURSIVELY( XML-fileName) { PROCESS( XML-fileName) ITERATE Called-XML-file THROUGH XML-file//call-ELEMENT { IF NOT ( Guard.EXISTS( Called-XML-file.NAME) { Guard.ADD( Called-XML-file.NAME) PROCESS-RESURSIVELY(Called-XML-file.NAME) } } } PROCESS-RESURSIVELY(start-file) ============================================================= I found out that, but I could be mistaken, that the standard W3C-XML-tooling (XPATH, XQUERY, XLST) cant handle this situation because of their declarative nature. Recursiveness is possible with these tools but only in a linear way not in an iterative way. That is why Im looking for alternatives. Hopefully BaseX can help me out here. Ive BaseX and the JAVA-examples in eclipse running. Im b.t.w. nor a JAVA- nor an eclipse-expert so it was a bit of a struggle, but I managed. My question: What is the best way to approach this challenge? Can you give me some tips? Kind regards, Rob Stapper Meine frage ist in English weil mein Deutsch nicht so gut is wie mein Englisch. Enschuldigung dafür. ;-) _____ I am using the Free version of SPAMfighter <http://www.spamfighter.com/len> . SPAMfighter has removed 501 of my spam emails to date. Do you have a slow PC? <http://www.spamfighter.com/SLOW-PCfighter?cid=sigen> Try free scan!

5 11

Single restxq call, multiple db:replace. Second one always fail, but the error message seems unrelated.
by France Baril 18 Jul '12

18 Jul '12

Hi, I have a process where for each input file, I must create 2 output files. For some reason, I seem to be unable to use more than 1 db:replace in the same function. I have tried pieces of code separately to ensure that every individual piece works. They do work. For your information, I have included my tests as comments after the function. (: param $lang is the desired target language of the translation :) declare %rest:path("/admin/convert-to-xliff") %rest:GET %rest:query-param("lang", "{$lang}", '') updating function admin:convert-to-xliff($lang as xs:string){ (: Src language is assumed to always be en-us as per business rules:) let $src-lang := "en-us" for $x in app:open-db($src-lang) let $xliff-stylesheet := app:get-translation-xliff-to-xsl() let $skeleton-stylesheet := app:get-translation-xliff-skeleton-xsl() let $params := map {"lang-to" := $lang} let $target-uri := replace(base-uri($x), $src-lang, $lang) let $target-skeleton-uri := replace($target-uri, '.xml', '_xliffskeleton.xml') let $xliff-doc := xslt:transform($x, $xliff-stylesheet, $params) let $xliff-skeleton := xslt:transform($x, $skeleton-stylesheet) return db:replace("Translated-units", $target-uri, document{$ xliff-doc}), db:replace("Translated-units", $target-skeleton-uri, document { $xliff-skeleton}) }; (: db:replace("Translated-units", $target-uri, document{$xliff-doc}) --- Creates the expected files in the expected location :) (: db:replace("Translated-units", $target-skeleton-uri, document {$xliff-skeleton}) --- Creates the expected files in the expected location :) (: concat($target-uri, ' --- ', $target-skeleton-uri) --- remove decl as updating function to test this, both paths are set :) - I tested the $target-uri and $target-skeleton-uri as strings, and they both get the expected values as string outputs. - The db:replace for each of them works individually. - However, when I try 2 db:replace, the second one return an error: [XPST0008] Undefined variable $target-skeleton-uri. - If I reverse the db:replace, the 'new' second one gets the error: [XPST0008] Undefined variable $target-uri. Therefore, it looks like it has nothing to do with the fact that the variable is undefined. Any clue? Thanks, France Baril P.S. I'm using BaseX 7.2.1 -- France Baril Architecte documentaire / Documentation architect france.baril(a)architextus.com (514) 572-0341

2 2

Lucene with BaseX !!!
by John Best 18 Jul '12

18 Jul '12

Hi there, I have gone through BaseX and used it. But the of application which I am going to develop has 10+ GB XML data. When I indexed this using BaseX and tried certain searches, I found that the time taken to complete the search was quite big. Is there any way to lower the time and when are you going to module Lucene? -- Have a nice day JBest

2 1

Counting groups
by Pascal Heus 17 Jul '12

17 Jul '12

All: In a group by query expression like for $varGrp at $pos in local:getVariables($from,$to) group by $name := string($varGrp/@name) return <Something/> is there any way to get a value or position for the group count? In my particular use case, I used this to generate an HTML table and I would like to repeat the header every 20-30 rows (group). The "at $pos" variable can't be used as it holds a sequence of positions of the group members (which is what it's supposed to). Any suggestion appreciated. best *P

2 2

BaseX 7.3 CREATE DB command fails with: "database locked"
by Godmar Back 13 Jul '12

13 Jul '12

Hi, I"m using BaseX 7.3 using the client/server interface with the org.basex.ClientSession driver. After working for a while, BaseX starts failing with: Fri Jul 13 14:39:23 EDT 2012: 198.82.2.41:B38B8E21E30111A56E8A828453F4E768:z_orj: Unexpected exception: org.basex.core.BaseXException: Database 'PUB_feed_libx_dot_editions_at_gmail_dot_com_core' is currently opened by another client. org.basex.core.BaseXException: Database 'PUB_feed_libx_dot_editions_at_gmail_dot_com_core' is currently opened by another client. at org.basex.server.ClientSession.receive(ClientSession.java:259) at org.basex.server.ClientSession.send(ClientSession.java:246) at org.basex.server.ClientSession.send(ClientSession.java:284) at org.basex.server.ClientSession.create(ClientSession.java:129) This happens when I attempt a 'CREATE DB' command. The log shows: 14:39:23.094 [127.0.0.1:47974]: ts_20120713_dot_143922_dot_654_feed_libx_dot_editions_at_gmail_dot_com_core CREATE DB PUB_feed_libx_dot_editions_at_gmail_dot_com_core [...] 14:39:23.098 [127.0.0.1:47974] Error: Database 'PUB_feed_libx_dot_editions_at_gmail_dot_com_core' is currently opened by another client. 4.05 ms I don't understand what 'locking' or "opened by another client" refers to in this context - certainly not something I'm doing. I'm exclusively using the commands documented at http://docs.basex.org/wiki/Commands none of which is an 'open' or 'lock' command. Again, this makes BaseX unusable - we can't create a reliable server if database operations start failing after a while. This happened after a series of operations - it's not something I can easily create a test case for (due to the fact that BaseX's log are incomplete so I can't simply replay the dozens or so operations I did before BaseX locked up in this way.) It happens regularly, and has happened in BaseX 6.6.3 (I've waited to report it after I upgraded to 7.3). - Godmar

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