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5252 discussions

Using xquery in a xslt stylesheet
by Raymond Meester 07 Mar '13

07 Mar '13

I thought I share this one, just in case someone needs to call BaseX (xquery the database in this example) from xslt: Greets, Raymond Example: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="2.0" exclude-result-prefixes="xsl basex" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:basex="java:org.basex.server.ClientSession">  <xsl:variable name="session" select="basex:new('localhost', 1984, 'admin','admin')"/> <xsl:template match="/">  <xsl:variable name="query"><xsl:text>XQUERY for $doc in db:open("SampleDB") return $doc</xsl:text></xsl:variable> <example>  <xsl:value-of select="basex:execute($session,string($query))"/> </example> </xsl:template> </xsl:stylesheet>

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Some general questions
by Kuranov, Anton 05 Mar '13

05 Mar '13

Hello, We are looking for fast and simple Java XML database engine for our integration solution. I've found BaseX that seems to be a good option but I have some questions about it: - Performance. How it feels on large databases, about 50-100 millions of nodes? Does performance degrades significally? What is the maximum number of nodes that BaseX have been tested with? - Streamable queries. We will need to send large datasets to client including the whole database. Does BaseX provides a streamable queries without caching whole resultset nowhere in memory (something like server cursors in RDBMS)? If we will use XQJ API and Java as middleware, is it will possible to create a fully streamable service to retrieve large amounts of data directly from database? - Failover. Our clients strongly require failover mode. I saw that at the moment BaseX does not support clustering and replication but it can be done at OS level using distributed file systems like Ceph or ClusterFS. Can we have two o more BaseX instances connected to the same shared storage? - What transaction isolation levels BaseX supports? Do BaseX transactions support JTA architecture? Regards, Antón ________________________________ Este correo electrónico y, en su caso, cualquier fichero anexo al mismo, contiene información de carácter confidencial exclusivamente dirigida a su destinatario o destinatarios. Si no es vd. el destinatario indicado, queda notificado que la lectura, utilización, divulgación y/o copia sin autorización está prohibida en virtud de la legislación vigente. En el caso de haber recibido este correo electrónico por error, se ruega notificar inmediatamente esta circunstancia mediante reenvío a la dirección electrónica del remitente. Evite imprimir este mensaje si no es estrictamente necesario. This email and any file attached to it (when applicable) contain(s) confidential information that is exclusively addressed to its recipient(s). If you are not the indicated recipient, you are informed that reading, using, disseminating and/or copying it without authorisation is forbidden in accordance with the legislation in effect. If you have received this email by mistake, please immediately notify the sender of the situation by resending it to their email address. Avoid printing this message if it is not absolutely necessary.

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Problem using xquery:eval using Basex 7.6
by Freihalter Thomas 04 Mar '13

04 Mar '13

Hi, I read in the Basex-Archive about a bug in xquery:eval, is this related to this bug? list() .... stockdevel_stock_work_COUTRY 122 34188 ... Here is my xquery, it is okay for a small selection size: XQUERY let $xquery := "db:open('stockdevel_stock_work_COUTRY')/*[@n='NZ']" for $i in xquery:eval($xquery) return $i <COUTRY n="NZ" s="valid" t="2013-03-04T22:10:29.308+0100" v="1"> <COUNTRY>Neuseeland</COUNTRY> <REGION>REGION EM</REGION> </COUTRY> if the selection size is greater then about 100: XQUERY let $xquery := "db:open('stockdevel_stock_work_COUTRY')/*" for $i in xquery:eval($xquery) return $i .... <COUTRY n="NZ" s="valid" t="2013-03-04T" v="1"> <COUNTRY>Neuseeland</COUNTRY> <REGION>REGION EM</REGION> </COUTRY> ..... Sometimes I get : Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 7.6 Java: Sun Microsystems Inc., 1.6.0_35 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 7 org.basex.util.Compress.pull(Compress.java:139) org.basex.util.Compress.unpack(Compress.java:121) org.basex.data.DiskData.txt(DiskData.java:268) org.basex.data.DiskData.text(DiskData.java:235) org.basex.io.serial.Serializer.node(Serializer.java:343) org.basex.io.serial.Serializer.serialize(Serializer.java:99) org.basex.io.serial.Serializer.serialize(Serializer.java:84) org.basex.core.cmd.AQuery.query(AQuery.java:90) org.basex.core.cmd.XQuery.run(XQuery.java:22) org.basex.core.Command.run(Command.java:342) org.basex.core.Command.exec(Command.java:321) org.basex.core.Command.execute(Command.java:78) org.basex.server.ClientListener.run(ClientListener.java:145) Or using this xquery with restxq http://localhost:8984/restxq ... Unexpected error: 48 or Unexpected error: java.lang.ArrayIndexOutOfBoundsException Regards, Thomas Freihalter

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Setting up RESTXQ in more than one place
by Wendell Piez 02 Mar '13

02 Mar '13

Hi BaseX, Did I mention recently what a great product you have here? So I have found by tweaking webapp/WEB-INF/web.xml I can point BaseX to someplace other than its restxq directory to find its RESTXQ .xqm files. This is cool. (I am encapsulating code for maximum portability and this is a help.) But in this project we are also looking forward to when we'll be serving multiple different datasets with different document types and logic, and we wish to keep them separate. Will I be able to ask BaseX to look in more than one place for its RESTXQ? (For its databases?) Thanks -- Wendell -- Wendell Piez | http://www.wendellpiez.com XML | XSLT | electronic publishing Eat Your Vegetables _____oo_________o_o___ooooo____ooooooo_^

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Whitespace anomaly running XSLT from BaseX
by Wendell Piez 01 Mar '13

01 Mar '13

Friends, I am encountering an odd whitespace-handling anomaly in BaseX when invoking Saxon to transform files behind RESTXQ. Briefly, if I have this in my XSLT: <xsl:text> </xsl:text> (the common way to get a space character in my result) I get nothing, and this <xsl:text> Boo! </xsl:text> gets me "Boo!" (leading and trailing whitespace trimmed). But I can't duplicate this behavior running BaseX from the GUI. I am sure there is a 'trim' or 'chop' setting somewhere that is allowing this, but I don't know where to look. Any ideas? Thanks, Wendell -- Wendell Piez | http://www.wendellpiez.com XML | XSLT | electronic publishing Eat Your Vegetables _____oo_________o_o___ooooo____ooooooo_^

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RestXQ parameter matching
by Wendell Piez 27 Feb '13

27 Feb '13

Hi, I have this bit of RestXQ: declare %restxq:path("test/{$id}.html") %output:method("xhtml") %output:omit-xml-declaration("no") %output:doctype-public("-//W3C//DTD XHTML 1.0 Transitional//EN") %output:doctype-system("http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd") function me:testing($id as xs:string) { let $db := db:open("myDB") return <html> <body> <h1>{$id }</h1> </body> </html> Hitting http://localhost:8984/restxq/test/testing.html, I expect to see "testing" big and bold. But I see "testing.html". Any clue as to what I'm doing wrong? Thanks, Wendell -- Wendell Piez | http://www.wendellpiez.com XML | XSLT | electronic publishing Eat Your Vegetables _____oo_________o_o___ooooo____ooooooo_^

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issuing XQuery via basex command line
by Silver, Jonathan 27 Feb '13

27 Feb '13

I've just downloaded 7.6 and am trying to perform a query using the command line basex utility, It does not seem to work. I can execute the following using the GUI, but not from the utility, 1. Any ideas? Is this a limitation or a bug? I have not looked through the source code yet. 2. Is there any way to insert comments in the command file that is passed on basex -c filename.xq ? 3. Am I supposed to be able to split the for loop onto multiple lines? It does not appear so. Thanks, Jonathan Open factbook for $x in /mondial/country where $x/languages="English" return $x/religions

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Re: [basex-talk] Address already in use
by McDonald, Shaun 27 Feb '13

27 Feb '13

Thanks, Ludovic. And many thanks to all three, whose assistance has helped me get the REST working! Cheers, Shaun > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 27 Feb 2013 08:57:25 -0500 > From: "McDonald, Shaun" <Shaun.McDonald(a)oup.com> > To: "basex-talk(a)mailman.uni-konstanz.de" > <basex-talk(a)mailman.uni-konstanz.de> > Subject: [basex-talk] Address already in use > Message-ID: > <072DBA0C025AE84D92C277D05803771023FEF5089E(a)usmb02.us.oup > .com> > Content-Type: text/plain; charset="us-ascii" > > Thank you, both. I've dealt with that error, and now the browser just loads > indefinitely. > > The http server's listening on 8984 and configured to stop on 8985. The db > server is on 1984. > > Forgive me, I'm a link architect doing a POC without system support. It's been > a while since I've had to configure an app server. Would someone by chance > have example config values of a successful basexhttp installation? > > Thanks, again for your help. > > Cheers, > > Shaun > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Tue, 26 Feb 2013 12:09:45 -0500 > > From: "McDonald, Shaun" <Shaun.McDonald(a)oup.com> > > To: "basex-talk(a)mailman.uni-konstanz.de" > > <basex-talk(a)mailman.uni-konstanz.de> > > Subject: [basex-talk] Address already in use > > Message-ID: > > <072DBA0C025AE84D92C277D05803771023FEF5065F(a)usmb02.us.oup > > .com> > > Content-Type: text/plain; charset="us-ascii" > > > > Hi, > > > > I'm trying to access a database locally via HTTP on port 8984, and I > > keep getting "Address already in use" 503 Error. > > > > I've attached the error's log entry. > > > > Nothing else appears to be using that port. > > > > Thanks, > > > > Shaun > > ------------------------------ > > > > Message: 2 > > Date: Tue, 26 Feb 2013 18:13:27 +0100 > > From: Ludovic Kuty <mailing(a)kuty.be> > > To: basex-talk(a)mailman.uni-konstanz.de > > Subject: Re: [basex-talk] Address already in use > > Message-ID: <7BCFE308-49B1-4BE4-ABD4-509F9BE54431(a)kuty.be> > > Content-Type: text/plain; charset="windows-1252" > > > > Did you try a "netstat -nltp" as root under Linux to see if something > > is listening on the port ? > > > > On 26 Feb 2013, at 18:09, McDonald, Shaun wrote: > > > > > Hi, > > > > > > I?m trying to access a database locally via HTTP on port 8984, and I > > > keep > > getting ?Address already in use? 503 Error. > > > > > > I?ve attached the error?s log entry. > > > > > > Nothing else appears to be using that port. > > > > > > Thanks, > > > > > > Shaun > > > <2013-02-26-Error- > > Entry.log>__________________________________________ > > > _____ > > > BaseX-Talk mailing list > > > BaseX-Talk(a)mailman.uni-konstanz.de > > > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > > ------------------------------ > > > > Message: 3 > > Date: Tue, 26 Feb 2013 12:21:51 -0500 > > From: Liam R E Quin <liam(a)w3.org> > > To: Ludovic Kuty <mailing(a)kuty.be> > > Cc: basex-talk(a)mailman.uni-konstanz.de > > Subject: Re: [basex-talk] Address already in use > > Message-ID: <1361899311.21728.48.camel(a)localhost.localdomain> > > Content-Type: text/plain; charset="ISO-8859-15" > > > > On Tue, 2013-02-26 at 18:13 +0100, Ludovic Kuty wrote: > > > Did you try a "netstat -nltp" as root under Linux to see if > > > something is listening on the port ? > > > > or (as root) lsof -i TCP:8984 > > which will list the process, if any. > > > > Also make sure that you're contacting the right host :) BaseX has a > > habit of moving the configuration files around between releases, so > > sometimes the client isn't using the same conf file as the server. > > > > Liam > > > > -- > > Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ > > Pictures from old books: http://fromoldbooks.org/ > > Ankh: irc.sorcery.net irc.gnome.org freenode/#xml > > > > > > > > ------------------------------ > > > ------------------------------ > > Message: 2 > Date: Wed, 27 Feb 2013 15:09:14 +0100 > From: Ludovic Kuty <mailing(a)kuty.be> > To: basex-talk(a)mailman.uni-konstanz.de > Subject: Re: [basex-talk] Address already in use > Message-ID: <82F1F468-ED5E-4754-9108-1ABEA8B4EC93(a)kuty.be> > Content-Type: text/plain; charset=us-ascii > > Here it is. I've just customized the paths to where BaseX is installed. > > # BaseX Property File. > > # General Options > DBPATH = /Users/ludo/Applications/basex/data > REPOPATH = /Users/ludo/Applications/basex/repo > DEBUG = false > LANG = English > LANGKEYS = false > > # Client/Server Architecture > HOST = localhost > PORT = 1984 > SERVERPORT = 1984 > EVENTPORT = 1985 > USER = > PASSWORD = > SERVERHOST = > PROXYHOST = > PROXYPORT = 80 > NONPROXYHOSTS = > TIMEOUT = 0 > KEEPALIVE = 0 > PARALLEL = 8 > LOG = true > LOGMSGMAXLEN = 1000 > > # HTTP Services > WEBPATH = /Users/ludo/Applications/basex/webapp > RESTXQPATH = restxq > HTTPLOCAL = false > STOPPORT = 8985 > > # Experimental Options > DBLOCKING = false > > On 27 Feb 2013, at 14:57, McDonald, Shaun wrote: > > > Thank you, both. I've dealt with that error, and now the browser just loads > indefinitely. > > > > The http server's listening on 8984 and configured to stop on 8985. The db > server is on 1984. > > > > Forgive me, I'm a link architect doing a POC without system support. It's > been a while since I've had to configure an app server. Would someone by > chance have example config values of a successful basexhttp installation? > > > > Thanks, again for your help. > > > > Cheers, > > > > Shaun > >> --------------------------------------------------------------------- > >> - > >> > >> Message: 1 > >> Date: Tue, 26 Feb 2013 12:09:45 -0500 > >> From: "McDonald, Shaun" <Shaun.McDonald(a)oup.com> > >> To: "basex-talk(a)mailman.uni-konstanz.de" > >> <basex-talk(a)mailman.uni-konstanz.de> > >> Subject: [basex-talk] Address already in use > >> Message-ID: > >> <072DBA0C025AE84D92C277D05803771023FEF5065F(a)usmb02.us.oup > >> .com> > >> Content-Type: text/plain; charset="us-ascii" > >> > >> Hi, > >> > >> I'm trying to access a database locally via HTTP on port 8984, and I > >> keep getting "Address already in use" 503 Error. > >> > >> I've attached the error's log entry. > >> > >> Nothing else appears to be using that port. > >> > >> Thanks, > >> > >> Shaun > >> ------------------------------ > >> > >> Message: 2 > >> Date: Tue, 26 Feb 2013 18:13:27 +0100 > >> From: Ludovic Kuty <mailing(a)kuty.be> > >> To: basex-talk(a)mailman.uni-konstanz.de > >> Subject: Re: [basex-talk] Address already in use > >> Message-ID: <7BCFE308-49B1-4BE4-ABD4-509F9BE54431(a)kuty.be> > >> Content-Type: text/plain; charset="windows-1252" > >> > >> Did you try a "netstat -nltp" as root under Linux to see if something > >> is listening on the port ? > >> > >> On 26 Feb 2013, at 18:09, McDonald, Shaun wrote: > >> > >>> Hi, > >>> > >>> I?m trying to access a database locally via HTTP on port 8984, and I > >>> keep > >> getting ?Address already in use? 503 Error. > >>> > >>> I?ve attached the error?s log entry. > >>> > >>> Nothing else appears to be using that port. > >>> > >>> Thanks, > >>> > >>> Shaun > >>> <2013-02-26-Error- > >> Entry.log>__________________________________________ > >>> _____ > >>> BaseX-Talk mailing list > >>> BaseX-Talk(a)mailman.uni-konstanz.de > >>> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > >> ------------------------------ > >> > >> Message: 3 > >> Date: Tue, 26 Feb 2013 12:21:51 -0500 > >> From: Liam R E Quin <liam(a)w3.org> > >> To: Ludovic Kuty <mailing(a)kuty.be> > >> Cc: basex-talk(a)mailman.uni-konstanz.de > >> Subject: Re: [basex-talk] Address already in use > >> Message-ID: <1361899311.21728.48.camel(a)localhost.localdomain> > >> Content-Type: text/plain; charset="ISO-8859-15" > >> > >> On Tue, 2013-02-26 at 18:13 +0100, Ludovic Kuty wrote: > >>> Did you try a "netstat -nltp" as root under Linux to see if > >>> something is listening on the port ? > >> > >> or (as root) lsof -i TCP:8984 > >> which will list the process, if any. > >> > >> Also make sure that you're contacting the right host :) BaseX has a > >> habit of moving the configuration files around between releases, so > >> sometimes the client isn't using the same conf file as the server. > >> > >> Liam > >> > >> -- > >> Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ > >> Pictures from old books: http://fromoldbooks.org/ > >> Ankh: irc.sorcery.net irc.gnome.org freenode/#xml > >> > >> > >> > >> ------------------------------ > > _______________________________________________ > > BaseX-Talk mailing list > > BaseX-Talk(a)mailman.uni-konstanz.de > > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk

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Address already in use
by McDonald, Shaun 27 Feb '13

27 Feb '13

Thank you, both. I've dealt with that error, and now the browser just loads indefinitely. The http server's listening on 8984 and configured to stop on 8985. The db server is on 1984. Forgive me, I'm a link architect doing a POC without system support. It's been a while since I've had to configure an app server. Would someone by chance have example config values of a successful basexhttp installation? Thanks, again for your help. Cheers, Shaun > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 26 Feb 2013 12:09:45 -0500 > From: "McDonald, Shaun" <Shaun.McDonald(a)oup.com> > To: "basex-talk(a)mailman.uni-konstanz.de" > <basex-talk(a)mailman.uni-konstanz.de> > Subject: [basex-talk] Address already in use > Message-ID: > <072DBA0C025AE84D92C277D05803771023FEF5065F(a)usmb02.us.oup > .com> > Content-Type: text/plain; charset="us-ascii" > > Hi, > > I'm trying to access a database locally via HTTP on port 8984, and I keep > getting "Address already in use" 503 Error. > > I've attached the error's log entry. > > Nothing else appears to be using that port. > > Thanks, > > Shaun > ------------------------------ > > Message: 2 > Date: Tue, 26 Feb 2013 18:13:27 +0100 > From: Ludovic Kuty <mailing(a)kuty.be> > To: basex-talk(a)mailman.uni-konstanz.de > Subject: Re: [basex-talk] Address already in use > Message-ID: <7BCFE308-49B1-4BE4-ABD4-509F9BE54431(a)kuty.be> > Content-Type: text/plain; charset="windows-1252" > > Did you try a "netstat -nltp" as root under Linux to see if something is > listening on the port ? > > On 26 Feb 2013, at 18:09, McDonald, Shaun wrote: > > > Hi, > > > > I?m trying to access a database locally via HTTP on port 8984, and I keep > getting ?Address already in use? 503 Error. > > > > I?ve attached the error?s log entry. > > > > Nothing else appears to be using that port. > > > > Thanks, > > > > Shaun > > <2013-02-26-Error- > Entry.log>__________________________________________ > > _____ > > BaseX-Talk mailing list > > BaseX-Talk(a)mailman.uni-konstanz.de > > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > ------------------------------ > > Message: 3 > Date: Tue, 26 Feb 2013 12:21:51 -0500 > From: Liam R E Quin <liam(a)w3.org> > To: Ludovic Kuty <mailing(a)kuty.be> > Cc: basex-talk(a)mailman.uni-konstanz.de > Subject: Re: [basex-talk] Address already in use > Message-ID: <1361899311.21728.48.camel(a)localhost.localdomain> > Content-Type: text/plain; charset="ISO-8859-15" > > On Tue, 2013-02-26 at 18:13 +0100, Ludovic Kuty wrote: > > Did you try a "netstat -nltp" as root under Linux to see if something > > is listening on the port ? > > or (as root) lsof -i TCP:8984 > which will list the process, if any. > > Also make sure that you're contacting the right host :) BaseX has a habit of > moving the configuration files around between releases, so sometimes the > client isn't using the same conf file as the server. > > Liam > > -- > Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ > Pictures from old books: http://fromoldbooks.org/ > Ankh: irc.sorcery.net irc.gnome.org freenode/#xml > > > > ------------------------------

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On the client protocol level: Can a query be executed multiple times?
by Hans Hübner 26 Feb '13

26 Feb '13

I have a question regarding the client protocol: Can a query that has been prepared using the "QUERY" protocol message be executed only once, or multiple times? If it can be executed multiple times, with different parameter sets, how is the previous execution ended? The documentation of the "CLOSE" message seems to indicate the the query is unregistered when it is closed. Is there some documentation or sample code that illustrates the expected sequence of client messages for query execution? Thanks, Hans

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