- BaseX-Talk - mailman.uni-konstanz.de

Returned mail: Data format error
by The Post Office 20 Jun '14

20 Jun '14

This message was not delivered due to the following reason: Your message could not be delivered because the destination computer was unreachable within the allowed queue period. The amount of time a message is queued before it is returned depends on local configura- tion parameters. Most likely there is a network problem that prevented delivery, but it is also possible that the computer is turned off, or does not have a mail system running right now. Your message could not be delivered within 8 days: Host 90.79.153.238 is not responding. The following recipients did not receive this message: <basex-talk(a)mailman.uni-konstanz.de> Please reply to postmaster(a)mailman.uni-konstanz.de if you feel this message to be in error.

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Big XML file
by Erol Akarsu 20 Jun '14

20 Jun '14

I have about 9G xml file and like to process with basex. But I am getting out of memory erroe (with setting -Xmx7G). Yesterday, I was able to process like this where $rawProductsFile is the name of big xml file. XML file consists of "Products" elements and process them one by one and write result into a file. But today, it is out of memory exception. let $res := for $doc in fn:doc($rawProductsFile)//Products let $list:= for $tname in $tables let $rows := ($doc[fn:name() eq $tname]|$doc//table[@name eq $tname]) let $list2 := local:processOneProd ($tname,$rows,$tableMap) let $fw := file:append(fn:concat($tablesFolder,$tname,".xml"),$list2) return $fw return $list Which way is good to process large xml file like this, process each element one be one? I appreciate your help Erol Akarsu

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Einzigartige Rezepte, die Körperfett schmelzen lassen
by Marie Koertig 19 Jun '14

19 Jun '14

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new booking 2014-06-18
by 船公司 18 Jun '14

18 Jun '14

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Re: [basex-talk] How to run several commands in one post
by Christian Grün 18 Jun '14

18 Jun '14

Hi Arjan (cc to the list), >> But then it is also not possible to start-up some existing server side script that way? I've added another idea to the reopened GitHub issue [1]: we could extend the "run" operation [2] to also support command scripts. Christian [1] https://github.com/BaseXdb/basex/issues/559 [2] http://docs.basex.org/wiki/REST#Operations

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Difference in query behavior between BaseX 7.7 beta and BaseX 7.8.2
by Srinivasan Muthu 17 Jun '14

17 Jun '14

We have been using BaseX 7.7 beta for a while and recently we switched to 7.8.2 and found two queries failed with the existing unit tests. After research, we found that the query is now getting compiled into a different optimized query (from 7.7) and results in evaluating a variable, even if that variable will never be used, as it is inside an IF condition for particular input. Here is the query: ------------------------------------------------------------------ declare function local:addPrefix($arg as element()?){ concat("prefix-", $arg) }; let $a := <a> 1 2 3 </a> let $prefixed-data:= <ele>{local:addPrefix($a/b)}</ele> return if (exists($a/c)) then ( $prefixed-data ) else ( 'no input data' ) ------------------------------------------------------------------ In BaseX 7.7beta the output is 'no input data' which is correct. Here $prefixed-data does not get evaluated in BaseX 7.7 beta, as exists($a/c) is FALSE. The optimized query in GUI also shows '$prefixed-data' variable removed. Here is the optimized query in BaseX 7.7 beta: *Compiling:* - rewriting for tail calls: Q{ http://www.w3.org/2005/xquery-local-functions}addPrefix - rewriting fn:exists($a/c) - inlining let $prefixed-data := element ele { (local:addPrefix($a/b)) } - removing variable $prefixed-data *Optimized Query: * declare function local:addPrefix($arg as element()?) { fn:concat("prefix-", $arg) }; let $a := element a { (element b { ("1") }, element b { ("2") }, element b { ("3") }) } return if($a/c) then element ele { (local:addPrefix($a/b)) } else "no input data" ------------------------------------------------------------------ In BaseX 7.8.2 the query throws an error. In 7.8.2, $prefixed-data gets evaluated even though the 'IF" condition is FALSE. See optimized query from GUI here: *Error:* Stopped at C:/source/perforce/PSODepot/health-analyzer/ha-rel504/libs/catalog/src/main/resources/analysis/vsphere/6.5/CO-001/file3, 1/18: [XPTY0004] Cannot treat item() sequence as element()?: (..., ..., ...). Compiling: - inlining Q{http://www.w3.org/2005/xquery-local-functions}addPrefix#1 - inlining let $arg_3 as element()? := $a_1/b - simplifying flwor expression - rewriting fn:exists($a_1/c) *Query:* declare function local:addPrefix($arg as element()?){ concat("prefix-", $arg) }; let $a := <a> 1 2 3 </a> let $prefixed-data:= <ele>{local:addPrefix($a/b)}</ele> return if (exists($a/c)) then ( $prefixed-data ) else ( 'no input data' ) *Optimized Query:* let $a_1 := element a { (element b { ("1") }, element b { ("2") }, element b { ("3") }) } let $prefixed-data_2 := element ele { (fn:concat("prefix-", ((: element()?, true :) $a_1/b))) } return if($a_1/c) then $prefixed-data_2 else "no input data" Query plan: <QueryPlan> <GFLWOR> <Let> <Var name="$a" id="1"/> <CElem> <QNm value="a" type="xs:QName"/> <CElem> <QNm value="b" type="xs:QName"/> <Str value="1" type="xs:string"/> </CElem> <CElem> <QNm value="b" type="xs:QName"/> <Str value="2" type="xs:string"/> </CElem> <CElem> <QNm value="b" type="xs:QName"/> <Str value="3" type="xs:string"/> </CElem> </CElem> </Let> <Let> <Var name="$prefixed-data" id="2"/> <CElem> <QNm value="ele" type="xs:QName"/> <FNStr name="concat(atom1,atom2[,...])"> <Str value="prefix-" type="xs:string"/> <TypeCheck type="element()?" function="true"> <IterPath> <VarRef> <Var name="$a" id="1"/> </VarRef> <IterStep axis="child" test="b"/> </IterPath> </TypeCheck> </FNStr> </CElem> </Let> <If> <IterPath> <VarRef> <Var name="$a" id="1"/> </VarRef> <IterStep axis="child" test="c"/> </IterPath> <VarRef> <Var name="$prefixed-data" id="2"/> </VarRef> <Str value="no input data" type="xs:string"/> </If> </GFLWOR> </QueryPlan> ------------------------------------------------------------------ We wanted to make sure that this is due to the way queries are executed differently now in BaseX 7.8.2 and not a bug in BaseX 7.8.2. Removing the unused variable makes sense for optimization purposes, so it looks like 7.7 was doing the right thing. Can you confirm please? Thanks, Srini

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Die Wahrheit über Diabetes
by Karolin Hertzog 17 Jun '14

17 Jun '14

To stop receiving these emails:http://mail0.diabetesblog.biz/unsubscribe.php?M=75921&C=08a2923af15af1ad713ec0788079def3&L=1&N=2 Hallo, Falls Sie unter Diabetes leide, dann könnte Ihnen dieser Artikel sehr behilflich sein: 3 Geheimnisse zum Fett verbrennen und Blutzucker verbessern: http://www.diabetesblog.biz Diese 3 Tipps sind einfach und Sie können diese „Geheimnisse“ sofort verwenden. Klicken Sie hier um den Artikel zu lesen: http://www.diabetesblog.biz mit freundlichen Grüßen, Karolin Hertzog

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RESTXQ declare base-uri ".";
by Andy Bunce 17 Jun '14

17 Jun '14

Hi, It seems that in restxq mode relative paths for *declare base-uri* are resolved differently [1]. If I have -webapp --folder1 ---mod1.xqm (which has import module namespace xm='test' at 'mod2.xqm';) ---mod2.xqm The import works. If I add declare base-uri "."; to mod1. the import fails, running the same code not via restxq and it works. Is this intended behavior? /Andy [1] http://www.w3.org/TR/2014/REC-xquery-30-20140408/#id-base-uri-decl

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Basex 404
by Lars Johnsen 16 Jun '14

16 Jun '14

I've recently run into a problem with basexserver/basexhttp. The host:8984 responds but seems to have lost contact with the webapp directory. Here is what is happening on 3 out of 5 installations (on linux - installed by unpacking the latest ziparchive), where one used to work as expected: 1) host:8984 do not display the restxq example, but is up and running 2) host:8984/rest shows the list of databases 3) host:8984/rest/run=script-name.xq gives 404 - no function matches request So the server appears to be connected to the database, but won't look at the webapp directory. Where is the best place to look for information? All the best, Lars

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Strategies for "checkout" or explicit file locking
by Alister Pillow 16 Jun '14

16 Jun '14

Hi all, BaseX doesn’t appear to have explicit document-level access control (ownership and permissions). I understand that Write and Read locks are applied during queries - but these are not explicit and only apply during the course of the query. I wonder what strategies other people use to lock a file for “editing”, or “checkout” a file so that only a single user has access (in a multi-user environment). Does anyone manage more than a few users within one instance of BaseX? (e.g. more than 10) Thanks, Alister.

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