BaseX-Talk

basex-talk@mailman.uni-konstanz.de

1 participants
5252 discussions

Scientific Numbers in Scatter Plot
by IVES Greg 25 Jan '13

25 Jan '13

Hi I find BaseX a very powerful tool. One thing I noticed however is that it misunderstands numbers in scientific notation in the scatter plot display. Please see the attached plot. The samples should form a rough diagonal line. However, look at the scale on the left and you can see the exponent field is 'dis-continuous'. It looks like the chart formatter treats it as a non-scientific number or possibly even lexicographic order. Best Regards Greg

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Collection related functions [SEC=UNCLASSIFIED]
by Thamm, Russell 24 Jan '13

24 Jan '13

UNCLASSIFIED Hi, Does baseX provide any collection related functions? In particular, I am after equivalents to the eXist functions: xmldb:create-collection xmldb:get-child-collections xmldb:get-child-resources I have searched the module library documentation and can't seem to find anything. I can duplicate the action of the latter two using db:list but that appears to be rather inefficient. BaseX doesn't seem to like empty collections, so the first might be superfluous. Cheers IMPORTANT: This email remains the property of the Department of Defence and is subject to the jurisdiction of section 70 of the Crimes Act 1914. If you have received this email in error, you are requested to contact the sender and delete the email.

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Basex performance
by Mark Dwyer 24 Jan '13

24 Jan '13

Hi, I was considering the use of BASEX for an XPATH based solution I have which uses XPATH to select data from moderately large messages. Say between 20 and 50 Mb. Are there any relative performance stats in using BASEX over SUN/ORACLE Java implementations of XPATH ? Mark A copy of the LCH.Clearnet e-mail disclaimer can be found at: www.lchclearnet.com/disclaimer/email LCH.Clearnet Limited, Registered Office: Aldgate House, 33 Aldgate High Street, London EC3N 1EA. Recognised as a Clearing House under the Financial Services & Markets Act 2000. Reg. in England No. 25932. LCH.Clearnet SA, Siège Social: 18 rue du Quatre Septembre, 75002 Paris, Chambre de Compensation conformément au Code Monétaire et Financier. LCH.Clearnet LLC, Principal Office: 17 State Street, New York, NY 10004. Registered with the U.S. Commodity Futures Trading Commission as a derivatives clearing organization under the U.S. Commodity Exchange Act.

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Performance with fulltext searches
by Charles Duffy 24 Jan '13

24 Jan '13

Howdy, all -- If I run the following query against a large, full-text-indexed store (output from "svn log --xml" on a repository with several hundred thousand entries), I get results back in well under a second: count(/log/logentry[./paths/path/text() contains text "trunk"]) However, the following variant takes multiple minutes to execute -- actually, has never yet completed before I've lost patience and cancelled it: count(/log/logentry[ ./paths/path/text() contains text "trunk" and not( (./paths/path/text() contains text "tags") or (./paths/path/text() contains text "branches") ) ]) Is there a way to get reasonable(ish) performance for the more complex query?

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HTTPS
by pw＠themail.co.uk 24 Jan '13

24 Jan '13

Dear List Since Win7, Win2008 etc don't by default allow establishing WebDAV connections with basic authentication on http connections, what is the best way to configure the BaseX httpserver for https? TIA Peter

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Re: [basex-talk] BaseX: Support for JSON
by Abishek N 22 Jan '13

22 Jan '13

Hello I am using twitter4j streaming api to capture tweets and feeding them into a basex database, converting them into xml using json api. While using the json:parse api, i get BXJS0001 error often. I assume it is because of encoding. Is there an option available in the json: api that would allow me to specify the enoding technique? Also if i store the documents as a json, instead would it facilitate json query? Thanks, Abishek

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Fwd: dynamic web application, XQJ, BaseX
by marco fregonese 22 Jan '13

22 Jan '13

---------- Forwarded message ---------- From: marco fregonese <marcofregonese(a)gmail.com> Date: 2013/1/21 Subject: Re: [basex-talk] dynamic web application, XQJ, BaseX To: Christian Grün <christian.gruen(a)gmail.com> There is a class in my Java web application that has a method that, after connecting to my BaseX database, execute a query on it. This query (associated to the "xquerystring" variable), after importing a library module and pointing the processor to the file containing the library module("library_module.xq"), uses the function "lib:getparts()". Now, after executing this method, I noticed that: with BaseX 7.3 the Xquery processor (o whatever it is, I don't know) looks for "library_module.xq" in the filesystem $HOME/basex/bin, while with BaseX 7.5 the processor looks for "library_module.xq" in $HOME. My question basically is: what is that makes the processor (or whatever it is) look for the file "library_module.xq" in $HOME/basex/bin (with BaseX 7.3) and in $HOME (with BaseX 7.5)? Hope I've been clear. Thanks PS: in BaseX GUI everything works fine: the XQuery processor looks for the file containing the library module in the same folder where the main module is. Example of main module: import module namespace lib="http://www.example.com/my_library_module" at "library_module.xq"; lib:getparts() The following is the code of the class I've talked about: package xqu; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.PrintStream; import javax.xml.namespace.QName; import javax.xml.xquery.XQConnection; import javax.xml.xquery.XQException; import javax.xml.xquery.XQExpression; import javax.xml.xquery.XQResultSequence; import con.Connection; public class Query { public static void getAllParts(String a, String sc) throws XQException, FileNotFoundException { File file = new File(sc); FileOutputStream fos = new FileOutputStream(file); PrintStream ps = new PrintStream(fos); System.setOut(ps); XQConnection con = Connection.getConnection(); XQExpression xqe = con.createExpression(); xqe.bindString(new QName("b"), a, null); String xqueryString = // using backslash for escaping " "import module namespace lib=\" http://www.example.com/library_module\"" + "at \"library_module.xq\";" + "declare variable $b external; " + "lib:getparts($b)"; XQResultSequence rs = xqe.executeQuery(xqueryString); String b = rs.getSequenceAsString(null); con.close(); System.out.println(b); } } 2013/1/20 Christian Grün <christian.gruen(a)gmail.com> > Hi Marco, > > sorry for the late feedback. Can you reproduce the issues in the BaseX > GUI or on command line? > > Best, > Christian > ___________________________________ > >

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Hi all, and URL Rewriting/Request handling question
by Jay Straw 22 Jan '13

22 Jan '13

Hi all, I've been developing in eXist since 2008, and I'm now trying out your BaseX. I'm impressed so far, but how can I perform URL rewriting? I've tried using Jetty's Rewrite Handler via the example code at http://wiki.eclipse.org/Jetty/Feature/Rewrite_Handler but then the server fails to start, it simply dumps with: $ sh bin/basexhttp org.eclipse.jetty.rewrite.handler.RewriteHandler So I figure I need to compile it in (I grabbed from github and built with maven, but didn't know how to build the http server and downloaded the 5meg zip). Not sure how to do that. I'm not a Java guy at the moment, so any pointers would be very helpful. Thanks everybody! Jay

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Use of BaseX
by Ankur Kasliwal 21 Jan '13

21 Jan '13

Hi, I am new to BaseX and documentation is also not very helpful for me. I am trying to deal with a collection of XML files present on the server. I am able to access those files using REST . What I want to do is read those XML files from a collection present in a certain folder and using Xpath/Xquery get certain nodes from these files and populate a RDBMS corresponding to them. For example: &gt bookstore &lt &gt book &lt abc &gt/ book &lt &gt price &lt 123 &gt /title &lt &gt title &lt xyz &gt /title &lt &gt /book &lt I have 10 of these files in my collection. So my question is how can I query all these Xml files at ones and get specific results like "Books with price value greater than 100". Once I get these results I want to store the result in a RDBMS so that at later point I can query that RDBMS to generate certain reports. NOTE: I am a graduate student and just doing this for learning and academic purpose. Hope to hear from someone soon. -- Ankur ankur.kasliwal.26(a)gmail.com 001-(916)673-7559

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dynamic web application, XQJ, BaseX
by marco fregonese 20 Jan '13

20 Jan '13

Hi there, I'm developing a Java dynamic web application in Eclipse Juno using XQJ and BaseX (OS Ubuntu 12.04). I'm using an XQuery main module importing a library module in my Java-XQJ code to query BaseX, something like this: .... String xqueryString = // import library module and point the processor to the file containing the library module "import module namespace lib=\" http://www.example.com/mylibrary_module\" at \"mylibrary_module.xq\";" + "lib:myfunction()"; XQResultSequence rs = xqe.executeQuery(xqueryString); ... Two questions: 1. Why does the processor looks for "mylibrary_module.xq" in ~/basex/bin? 2. Is there any way to change this path? Thanks.

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