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

Release BaseX 6.1
by Christian Grün 18 Apr '10

18 Apr '10

Dear all, once more, we are delighted to announce a new release of BaseX. Version 6.1 comes with the following improvements: - a new REST API, based on the JAX-RX Interface, to communicate with BaseX via HTTP. - new bindings to use BaseX from other programming languages. - support for all XSLT/XQuery serialization parameters. - advanced query optimizations to apply index structures whenever appropriate. - enhanced conformance with XQuery Update/Full Text Recommendations. BaseX is open source. It is developed by the DBIS Group at University of Konstanz. Please find more information at http://basex.org/ All the best, Christian Grün BaseX Team ___________________________ Christian Gruen Universitaet Konstanz Department of Computer & Information Science D-78457 Konstanz, Germany Tel: +49 (0)7531/88-4449, Fax: +49 (0)7531/88-3577 http://www.inf.uni-konstanz.de/~gruen

1 0

Using XML catalogs in BASE-X, right flow of actions for working with !DOCTYPE or !ENTITY declarations
by Jiří Kadlec 15 Apr '10

15 Apr '10

Hi all, Is it possible to use XML catalogs for getting documents referenced in DTD's with BASE-X database? My second question is about right procedure for dealing with DOCTYPE declaration. I'm using BASE-X for modifications in lot of different files. Some of them has DOCTYPE declaration defined and I would like to preserve this definition when I finish changes on the file. Its possible to use export functions with specified properties doctype-system, doctype-public, but is there any way how to get original doctype for me to be able to pass it as export property at the end or this must be specified by user who is modifying the file? I'm having the same issue with declarations of !ENTITY when i finish changes all entities are gone. Any help appreciated Jiri

2 1

how can I get java bindings in basex working?
by Sandra Maria Silcot 15 Apr '10

15 Apr '10

Fellow basex users, First, I can report that the recent optimisation enhancements have solved the performance issue I had reported -- thanks to the basex team. Basex most definitely rocks. Second, I am trying to implement a java binding as described here: http://www.inf.uni-konstanz.de/dbis/basex/xquery Thanks to the recent extra instruction added by the kindly basex developers, I have been able to use maven (2.2.1) on a ubuntu 64bit server to successfully compile basex from source. Excellent. But I am now wanting to do this in a basex xquery: declare namespace sim = "java:smstest.b4asims"; let $sim := sim:b4asims(xs:string("smith"), xs:string("smyth")) where this is a little jar I built around the simmetrics similarity library, like this: jar -cvf smstest.jar smstest/b4asims.class This successfully runs from the command line, under the same user the basex server runs under, like so (with the jar in my $CLASSPATH): BaseX 6.0.8 [Server] Server was started. fas@devfas: ~ $ java smstest.b4asims smith smythe ..str1=smith first=m Soundex score 0.9222222:smith:smythe Levenshtein score 0.6666666:smith:smythe JaroWinkler score 0.8577778:smith:smythe - total [smythe]=2.4466667 == score=2.4466667 bestScore=2.4466667 bestMatch=[smythe] #### bestScore=2.4466667 bestMatch=[smythe] I have tried every possible variation of the namespace definition and invoking the function in basex but it always says; [XPST0017] Unknown function "sim:b4asims(...)" In the pom.xml for basex I have added this: <groupId>smstest.b4asims</groupId> <artifactId>b4asims</artifactId> <scope>system</scope> <version>1.0</version> <systemPath>/media/disk2/fasrepo/common-bin/java/smstest.jar</systemPath> </dependency> and it compiles successfully, and I can then do a mvn 'package', and deploy the jar to my basex home dir, and run it but I simply cannot get the java bindings to work. I also tried alot of variations here, but to no avail. Clearly there is something really basic I am missing? I have tried the examples given on the basex documentation (the Math and file writer egs) and get exactly the same results -- Unknown function. All of my other java stuff on this box seems to work fine. I'm guessing that there is something in maven or eclipse which supplies the magic which I'm missing. I'm just using maven on the server, not eclipse. Any suggestions for a non-java developer would be most gratefully received. Best wishes to all, Sandra.

2 1

Next BaseX release
by Christian Grün 13 Apr '10

13 Apr '10

Dear all, BaseX 6.1 will be released this weekend. We regard our current source code base to be stable and well-tested. If you think that there are some serious issues to be fixed, please don't hesitate to give us feedback just in time. Next, we would be _very_ thankful if you could give us a short & quick summary (min. one line, max. one paragraph) on your project, company, both industrial and adademic. If we get enough feedback, we will extend basex.org by a reference page, possibly linking to your homepage. Thanks to everyone for supporting the project! Christian ___________________________ Christian Gruen Universitaet Konstanz Department of Computer & Information Science D-78457 Konstanz, Germany Tel: +49 (0)7531/88-4449, Fax: +49 (0)7531/88-3577 http://www.inf.uni-konstanz.de/~gruen

1 0

Question for XQJ to update
by Qu Xia 08 Apr '10

08 Apr '10

I made a simple XML called order.xml like this: -------------order.xml-------------- <orders> <order> <name>cola</name> <price>3.0</price> <factory>Number 1</factory> </order> <order> <name>coffee</name> <price>5.0</price> <factory>Number 2</factory> </order> </orders> -------------------------------------------- Now I want to update the price of the coffee to 6.0 with XQJ, so I got the following code: String driverName = "org.basex.api.xqj.BXQDataSource"; Class<?> driverClass = Class.forName(driverName); XQDataSource dataSource = (XQDataSource)driverClass.newInstance(); XQConnection xqc = dataSource.getConnection(); String updateString = "declare variable $node := doc('etc/xml/orders.xml')//order[name='coffee']; "+ "replace value of node $node/price with '5.0', " + "return " + "put(doc('etc/xml/orders.xml'), 'orders.xml')"; XQExpression xqu = xqc.createExpression(); xqu.executeQuery(updateString); xqu.close(); unfortunately, it throws an exception. I tried many different ways and fails all the time. could any tell me the right "updateString"? thanks a lot. -- Xia Qu Technology Center of Software Engineering, Institute of Software, Chinese Academy of Sciences Beijing, 100190, China Email (work):quxia08@otcaix.iscas.ac.cn Email (personal): tsuxia(a)gmail.com Mobile:(86) 1300-1010-069

2 1

How can I connected to the server usering XQJ
by 屈夏 07 Apr '10

07 Apr '10

Hi, I am a freshman here using BaseX6. I want to use XQJ API to connect with the BaseX Server, I tried many kinds of properties, but it does not work, did anyone try it before? thanks a lot.. -- Xia Qu Technology Center of Software Engineering, Institute of Software, Chinese Academy of Sciences Beijing, 100190, China Email (work):quxia08@otcaix.iscas.ac.cn Email (personal): tsuxia(a)gmail.com Mobile:(86) 1300-1010-069

2 2

basex xquery optimization not using attribute index on "joins"?
by Sandra Maria Silcot 06 Apr '10

06 Apr '10

Hi all, First, thanks to the developers for a great piece of software. I am having difficulty getting an xquery on a large database to run using indexed attributes when a "join" idiom is used. I have a large basex database, with multiple documents. One of those contains <rs> elements as shown below, where the @corresp attribute contains values which are identical to the @key attribute on <person> elements, which live in multiple separate files: <personGrp type="match:policeNum+ship" size="3"><persName> <rs corresp="c23a2866">Corper, Jno (Pn:1000C)...</rs> <rs corresp="dlm18192024">Corper, John (Pn:1000C)...</rs> <rs corresp="c31a31061000" >Corper, Jno (Pn:1000CC)...</rs> </persName></personGrp> I know indexes have been built as xpaths like this are lightening quick: //person[@key="c23a2866"] or //rs[@corresp="dlm18192024"] But when I do this, it is glacial (nearly 1 minute): EG(A) for $rs in //rs[@corresp="c31a31061000"]/../..//rs let $keyval := data($rs/@corresp) return //person[@key=$keyval] I am using BaseX6.jar on XP. When I look at the query plan, the ONLY time the attribute index used is on the //rs[@corresp="c31a31061000"] part. I can get it to run fast and return the 3 matched <person> elements using the attribute index using basex:eval, like this: EG(B) for $rs in data(//rs[@corresp="c31a31061000"]/../..//rs/@corresp) let $s := concat("//person[@key='",$rs,"']") return basex:eval($s) So rather than execute this query asa "join" -- a manner which seem widespread in the xquery world -- I must manually build and execute each //person[@key='string'] request "manually" to get basex to use its attribute index. Whilst this works, it seems a rather strange idiom to have to employ, and locks my queries into basex. Is the behaviour of EG(A) by design, or is it a bug that the query optimizer is failing to recognise it can use the attribute index on the //person[@key=$keyval] part? Any guidance much appreciated. Best wishes to all, Sandra.

2 4

xqconnection issue
by Travis Webb 05 Apr '10

05 Apr '10

I am having a strange issue using the XQJ libary. Anytime I make a change to the database (inserting / updating a node), subsequent queries perform as if that change was never made. However, if I create a new XQConnection to the database, those changes are reflected. So every time I update the database, I'm having to establish a new connection in order to see my changes. Is this expected behavior? If not, any ideas why this is happening? Thanks -tjw

3 2

Bug: baseX can't create XMLDB with non utf-8 xml String
by l0979365428＠gmail.com 05 Apr '10

05 Apr '10

Dear baseX creater: If it is xml file ,it 's ok. If it is xml String, BaseX only receives utf-8 encoding of XML. The reasion is : //---------------------------------------------------// public static IO get(final String s) { if(s == null) return new IOFile(""); if(s.startsWith("<")) return newIOContent(Token.token(s)); if(s.startsWith("http://")) return new IOUrl(s); return new IOFile(s); //---------------------------------------------------------// public static byte[] token(final String s) { final int l = s.length(); if(l == 0) return EMPTY; final byte[] bytes = new byte[l]; for(int i = 0; i < l; i++) { final char c = s.charAt(i); if(c > 0x7F) return utf8(s); bytes[i] = (byte) c; } return bytes; //-----------------------------------------------// Doesn't parse with the head of XML file. But this programe create xml struts with Sax which pares the xml with the head info. For this reason，it'll make mistakes once the XML String is not UTF-8. I fix it : if(s.startsWith("<")) return new IOContent(Token.encoding(s)); //----------------------------------------------// public static byte[] encoding(final String s) { final int l = s.length(); if(l == 0) return EMPTY; int i=0; int j =0; StringBuilder ss=new StringBuilder(); char hope[]=new char[]{'c','=','"','"'}; while (true) { final char c = s.charAt(i); if(hope[j]==c) j++; if(j==4) break; if(j>2&&c!=hope[j-1]) { ss.append(c); } i++; } final byte[] bytes = new byte[l]; for(int k = 0; k < l; k++) { final char c = s.charAt(k); if(c > 0x7F) return others(s,ss.toString()); bytes[k] = (byte) c; } return bytes; } //-----------------------------------------------// I wonder if you could fix this bug in the next version. Also BaseX doesn't support the String of xml with namespace build DB. And I have no idea. PS: BaseX57,Jdk1.5 best wishes Ruby

3 2

.basex config file
by Travis Webb 04 Apr '10

04 Apr '10

I have another question regarding the .basex config file. How does basex determine the home directory of the current user? by looking at $HOME? I'd like to trick basex into thinking this file is somewhere else, because the hard restriction that this file must reside in the home directory of the current user will not work for our use. -tjw

2 2

question: how to connect with base
by yasmeenzabash＠yahoo.com 02 Apr '10

02 Apr '10

Dear Sirs: My name is yasmin and I have a question about how to connect to Basex vis VS2008. I' a student in the Web Sience master and it is a small project for us to deploy one of the natinve XML DB. in a website. so it is quite confusing for me to deal with such DB. it would be agreat help from you to guide me through the steps to find how I can see and connect to BaseX via Visual Stusio 2008. and kindly would you answer my request as soon as possible. best regards. Yasmin Zabash

2 1

Namespace conflict problem
by Jiří Kadlec 01 Apr '10

01 Apr '10

Hi all, Could you help with following error [XUDY0024] New namespaces conflict with each other. I create database in basex GUI from following XML file: <root xmlns:my="http://www.somedomain.com"> <subroot my:index="1">aaa</subroot> <subroot my:index="2">bbb</subroot> <subroot my:index="3" my:delete="true">ccc</subroot> </root> Then I try to execute following statement declare namespace my="http://www.somedomain.com"; insert node attribute my:addedAttribute {"1"} into /root/subroot[@my:index=1] Am i doing something wrong, how should i write a query which will add add my:addedAttribute {"1"} into subroot element with my:index="1". Any help appreciated Jiri

2 1

Bug: baseX can't create XMLDB with non utf-8 xml String
by l0979365428＠gmail.com 31 Mar '10

31 Mar '10

Dear baseX creater: If it is xml file ,it 's ok. If it is xml String, BaseX only receives utf-8 encoding of XML. The reasion is : //---------------------------------------------------// public static IO get(final String s) { if(s == null) return new IOFile(""); if(s.startsWith("<")) return newIOContent(Token.token(s)); if(s.startsWith("http://")) return new IOUrl(s); return new IOFile(s); //---------------------------------------------------------// public static byte[] token(final String s) { final int l = s.length(); if(l == 0) return EMPTY; final byte[] bytes = new byte[l]; for(int i = 0; i < l; i++) { final char c = s.charAt(i); if(c > 0x7F) return utf8(s); bytes[i] = (byte) c; } return bytes; //-----------------------------------------------// Doesn't parse with the head of XML file. But this programe create xml struts with Sax which pares the xml with the head info. For this reason，it'll make mistakes once the XML String is not UTF-8. I fix it : if(s.startsWith("<")) return new IOContent(Token.encoding(s)); //----------------------------------------------// public static byte[] encoding(final String s) { final int l = s.length(); if(l == 0) return EMPTY; int i=0; int j =0; StringBuilder ss=new StringBuilder(); char hope[]=new char[]{'c','=','"','"'}; while (true) { final char c = s.charAt(i); if(hope[j]==c) j++; if(j==4) break; if(j>2&&c!=hope[j-1]) { ss.append(c); } i++; } final byte[] bytes = new byte[l]; for(int k = 0; k < l; k++) { final char c = s.charAt(k); if(c > 0x7F) return others(s,ss.toString()); bytes[k] = (byte) c; } return bytes; } //-----------------------------------------------// I wonder if you could fix this bug in the next version. Also BaseX doesn't support the String of xml with namespace build DB. And I have no idea. PS: BaseX57,Jdk1.5 best wishes Ruby

1 0

Bug: baseX can't create XMLDB with non utf-8 xml String
by l0979365428＠gmail.com 31 Mar '10

31 Mar '10

Dear baseX creater: If it is xml file ,it 's ok. If it is xml String, BaseX only receives utf-8 encoding of XML. The reasion is : //---------------------------------------------------// public static IO get(final String s) { if(s == null) return new IOFile(""); if(s.startsWith("<")) return newIOContent(Token.token(s)); if(s.startsWith("http://")) return new IOUrl(s); return new IOFile(s); //---------------------------------------------------------// public static byte[] token(final String s) { final int l = s.length(); if(l == 0) return EMPTY; final byte[] bytes = new byte[l]; for(int i = 0; i < l; i++) { final char c = s.charAt(i); if(c > 0x7F) return utf8(s); bytes[i] = (byte) c; } return bytes; //-----------------------------------------------// Doesn't parse with the head of XML file. But this programe create xml struts with Sax which pares the xml with the head info. For this reason，it'll make mistakes once the XML String is not UTF-8. I fix it : if(s.startsWith("<")) return new IOContent(Token.encoding(s)); //----------------------------------------------// public static byte[] encoding(final String s) { final int l = s.length(); if(l == 0) return EMPTY; int i=0; int j =0; StringBuilder ss=new StringBuilder(); char hope[]=new char[]{'c','=','"','"'}; while (true) { final char c = s.charAt(i); if(hope[j]==c) j++; if(j==4) break; if(j>2&&c!=hope[j-1]) { ss.append(c); } i++; } final byte[] bytes = new byte[l]; for(int k = 0; k < l; k++) { final char c = s.charAt(k); if(c > 0x7F) return others(s,ss.toString()); bytes[k] = (byte) c; } return bytes; } //-----------------------------------------------// I wonder if you could fix this bug in the next version. Also BaseX doesn't support the String of xml with namespace build DB. And I have no idea. PS: BaseX57,Jdk1.5 best wishes Ruby

1 0

Re: [basex-talk] Problems connecting to the database
by Christian Grün 30 Mar '10

30 Mar '10

Hi Daniel (cc to mailing list), > wow, this where a quick response :) ..you're welcome. >> Hm, didn't experience this before; have you tried BaseX on another >> machine, or user other ports? > > Tried it on my pc and on the server, same result. > >> By the help of your mail, I noticed that our documentation was >> out-of-dated; you need to specify -n instead -s (or try -h for help). >> I've updated our docs. Next, just to get sure, verify if port 7000 is >> opened on your server machine. > > Thank you for that, found out port 7000 where not open by default, and > corrected that. > > With no change in the BaseXServer behavior, I where expecting som sort > of console to controle the server with, but that will not happen? You can throw in the -i argument to end up in the console mode. Note that all admin commands can as well be used from another client, which is logged in with admin rights. > I solved another problem I got an now the Client code ask for login > and password, but now it just times out every time I try to log on. So you're getting a "Timeout exceeded." message? Hm, this would indicate that the server isn't reachable. Are you sure the ports are opened and available? > When I am logging on I am able to use the default admin/admin > login/password right? > My CentOS server, where the BaseX server is, have a password for every > user but If I have opened the port I dont need to go through any proxy > there, I just use admin/admin? …exactly, admin/admin is the default login. You may adjust the admin password or add more users in the next step. Christian > > ~DWP > > 2010/3/26 Christian Grün <christian.gruen(a)gmail.com>: >> Hi, >> >>> java -cp BaseX6.jar org.basex.BaseXServer -p 7000 >>> >>> To set up a server listening on port 7000. And i says "BaseX 6.0 >>> [server] \n Server was started" and not as it says in the guide >>> "Waiting for requests...", is that a problem? >> >> Hm, didn't experience this before; have you tried BaseX on another >> machine, or user other ports? >> >> >>> java -cp BaseX6.jar org.basex.BaseXClient -s [ip on my server] -p 7000 >>> >>> to try connecting, but then it just displays the help message and are >>> not doing anything. I am expecting a new console where I where able to >>> write commands to my baseX server, is that not the intention? >> >> By the help of your mail, I noticed that our documentation was >> out-of-dated; you need to specify -n instead -s (or try -h for help). >> I've updated our docs. Next, just to get sure, verify if port 7000 is >> opened on your server machine. >> >> Christian

3 14

xquery replace
by Travis Webb 28 Mar '10

28 Mar '10

I am trying to use xquery replace but cannot, it seems, figure out the correct syntax. As I understand it, the replace query should be of the form: "xquery replace expr with node", so I'm trying to do the following: > xquery replace root()/child with <child>new data</child> Stopped at line 1, column 15: Syntax: XQUERY [query] Evaluate XQuery. I've tried a number of variations but I get the same error. Any ideas? Thanks. -tjw

3 4

How to address a document inside a basex database?
by Sandra Maria Silcot 27 Mar '10

27 Mar '10

Hi all, I have a large database of about a dozen separate xml files. When I use the GUI interface, I can see them all in the graphical display, and as I pass the cursor over elements, it displays doc("om.xml")/... But when I try that in a query (the database is open), I'm told: FODC0002 File or directory C:/servers/basex/om.xml not found The basex installation is at C:/servers/basex and the currently opened database ("fasdb"), which was loaded from file 'om.xml' and others on a different machine, and downloaded, lives here: C:/servers/basex/BaseXData/fasdb How can I refer just to one document from that db in a query e.g. let $persons := doc("om.xml")//person Forgive me if this is a basic error on my part, I am still learning. I have tried variations on the basex:db construct, but all give a file not found error. If I move the document to where it is looking, basex builds a new db, not what I want at all! I'm sure there is a simple solution but I cannot see it. Any clues much appreciated. Cheers all, Sandra

2 1

Problems connecting to the database
by Daniel .Petersen 26 Mar '10

26 Mar '10

Hay Just started using baseX and have uploaded til executable .jar file to my server. Then i use the command: java -cp BaseX6.jar org.basex.BaseXServer -p 7000 To set up a server listening on port 7000. And i says "BaseX 6.0 [server] \n Server was started" and not as it says in the guide "Waiting for requests...", is that a problem? My intention is to be able to connect to my BaseX DB with a client from my pc to the server where the DB is. Then I on my pc run the command: java -cp BaseX6.jar org.basex.BaseXClient -s [ip on my server] -p 7000 to try connecting, but then it just displays the help message and are not doing anything. I am expecting a new console where I where able to write commands to my baseX server, is that not the intention? Thanks in advance for reading this and I hope for a quick answer. ~DWP

2 1

XPath or ID for node
by Perry Trolard 25 Mar '10

25 Mar '10

Dear List, I wonder if there's a method in BaseX for getting a unique identifier for a node. If I had a document in memory & was using, say, Saxon, I'd call a method on the node to return its location as an XPath string, but using XQuery in BaseX, is there a "somefn" such that for $d in $doc//date return <result path="{somefn($d}">{$d}</result> would return <result path="/root/date[5]"><date when="2010-03-25"/></result> or some such? I understand that nodes are identified internally in BaseX by their pre-order traversal index – is there a way get the pre number? If not directly from an XQuery function, perhaps in some of the Java client code? My use case is that I'd like to return elements – <date>'s, e.g. – with info about their location in the document so that later & on-demand I can get more info about certain dates – ancestor elements, &c; so, in short, I'd like to get a handle on the node for later retrieval. Thanks, Perry Trolard

2 3

xqresultsequence : retrieve item as node or string?
by Travis Webb 23 Mar '10

23 Mar '10

I have a question regarding efficiency in the xqresultsequence in the XQJ API. I've found no documentation on how this object is actually represented. Does anyone know if it is faster to request the result as a string (getItemAsString(null)) or as a DOM node (getNode())? Any info is appreciated. Thanks. -tjw

2 2

Re: [basex-talk] problems with fn:root function and comparision
by Jiří Kadlec 22 Mar '10

22 Mar '10

Hi Christian, thanks for your help. I tried using is operator instead of = and now I got expected result, but I got error with comparsion where true should be returned. i.e when I call fn:root(/test) is /test which should return true, but it returns false. I'm using same simple XML. <?xml version='1.0' encoding='UTF-8'?> <test> <nodes> <node></node> </nodes> <nodes2> </nodes2> </test> Is there something above /test some "super root"? I have checked what returns each command and the result is the same. for both, but when I check tree map window in base-x gui I found out that fn:root(/test) select my.xml and /test select test node directly. Is this a right behaviour? Thanks again for quick and helpful responses Jiri > Hi Jiří, > > "=" is a »general comparison« operator, which compares the atomized > values of your left and right operands. So-called »node comparison« > operators will give you the expected result: > > fn:root(/test/nodes) is /test/nodes > > More details in the specs: http://www.w3.org/TR/xquery/#id-node-comparisons > > Christian > > > On Fri, Mar 19, 2010 at 5:12 PM, Jiří Kadlec <jir.kadlec at post.cz> wrote: > > Hi guys, > > > > I'm having a trouble with using fn:root function. I want to check if given > XPath selects root node. So i decided to do it with following > > > > for eg. /test/nodes - is example XPath chosing non root element and i want to > check if this is root element byt running one of these statements > > > > fn:root(/test/nodes) = /test/nodes or fn:root() = /test/nodes > > > > both of these return true on following document: > > > > <?xml version='1.0' encoding='UTF-8'?> > > <test> > > <nodes> > > <node></node> > > </nodes> > > <nodes2> > > </nodes2> > > </test> > > > > when I run just first part of statement fn:root(/test/nodes) I get: > > <test> > > <nodes> > > <node/> > > </nodes> > > <nodes2/> > > </test> > > > > which is ok when I run separately /test/nodes i got this: > > <nodes> > > <node/> > > </nodes> > > > > it's also ok but when I try to compare it together I get false which is > definitelly not OK. > > i.e fn:root(/test/nodes) = /test/nodes .... returns true > > > > Am I doing something wrong or it's a bug in base-X. I have tried also last > BASE-X 6.03 and I'm having same problem. > > > > Thank you for help > > > > Jiri > > ___________________________ > > Christian Gruen > Universitaet Konstanz > Department of Computer & Information Science > D-78457 Konstanz, Germany > Tel: +49 (0)7531/88-4449, Fax: +49 (0)7531/88-3577 > http://www.inf.uni-konstanz.de/~gruen > > > >

2 1

problems with fn:root function and comparision
by Jiří Kadlec 19 Mar '10

19 Mar '10

Hi guys, I'm having a trouble with using fn:root function. I want to check if given XPath selects root node. So i decided to do it with following for eg. /test/nodes - is example XPath chosing non root element and i want to check if this is root element byt running one of these statements fn:root(/test/nodes) = /test/nodes or fn:root() = /test/nodes both of these return true on following document: <?xml version='1.0' encoding='UTF-8'?> <test> <nodes> <node></node> </nodes> <nodes2> </nodes2> </test> when I run just first part of statement fn:root(/test/nodes) I get: <test> <nodes> <node/> </nodes> <nodes2/> </test> which is ok when I run separately /test/nodes i got this: <nodes> <node/> </nodes> it's also ok but when I try to compare it together I get false which is definitelly not OK. i.e fn:root(/test/nodes) = /test/nodes .... returns true Am I doing something wrong or it's a bug in base-X. I have tried also last BASE-X 6.03 and I'm having same problem. Thank you for help Jiri

2 1

Re: [basex-talk] Well done!
by Christian Grün 18 Mar '10

18 Mar '10

Hi Erik, all of your suggestions are more than welcome – this is why I posted your answer back to the mailing list. I invite all of you to give personal feedback! > A few questions for you about basex and plans... > 1) Can a database store files other than xml? xqy/xql, images, js, css, etc? Our storage is currently limited to well-formed XML documents. > 2) Any plans to add collections or may basex does and I've overlooked it? Yes, BaseX supports collections – as long as they are flat. Databases can store multiple single documents, which can be accessed e.g. by the XQuery collection() function. See also Section 4.4 in http://basex.org/faq. > 3) ReST interface: There are two approaches, both have their benefits and I would like to see both available: > a) The rest interface allows manipulating db resources: dbs, collections, files, users, permissions, etc. (The eXist db does this.) > -The main advantage with this is an API easy to integrate into many environments > b) The rest interface allows requests to be rewritten to a delegate xquery file to handle processing the http methods. (Some other db's provide this.) > -This allows building complete applications within a database. > -Would like to see this as the base approach with (a) as an internal implementation of (b) > What are your thoughts? Interesting ideas.. Some of our current interface features are be inspired by eXist. While GET and POST can be used to send XQuery/Update requests, PUT and DELETE will allow to modify database instances. Here is a simple example how a GET request could look like: http://localhost:8080/rest/db/factbook?query=//country Additionally, we will allow to send BaseX database commands via GET and POST.. http://localhost:8080/rest/db/factbook?command=optimize This way, user management can be handled via REST as well. I'm not sure how users are modified in eXist via REST? Which other XML/REST implementations have you worked with? > 4) Any plans for webdav? This makes moving files in and out of the db easy for non-technical users. I've briefly looked at doing this with milton, apache jackrabbit, and from scratch. > 5) What do you think about using OSGI to enable plugging in db services? Bundles would be something like dbServer (the core service), tcpServer, restAdminServer, restServer, webdavServer, webAdmin, cliAdmin, monitorServer clusterServer, etc. This keeps the dbServer core code clean and small, yet allows other services to be developed and evolve independently. It also allows spinning up multiple instances of a server. For example, I could spin up multiple restServers or tcpServers on different ports to segment applications, or multiple webdav servers to partition content management per user/group rights. > 6) What do you think about moving to github? Looking for ways to grow basex community more quickly. Good suggestions.. Let's see what everyone thinks about it! > Hope you don't mind me jumping in. I see a great product whose continued and expanded development is important to this industry. You are welcome, Christian ___________________________ Christian Gruen Universitaet Konstanz Department of Computer & Information Science D-78457 Konstanz, Germany Tel: +49 (0)7531/88-4449, Fax: +49 (0)7531/88-3577 http://www.inf.uni-konstanz.de/~gruen

3 6

help required for xquery
by Ganesh K 18 Mar '10

18 Mar '10

Hello, Attached is xquery which i used. I tried using the xquery it halts with error Stopped at line 1, column 8191: [XPST0003] Expecting ">". i did try adding one more } as escaping. Need some help. I am using PHP to do so. Will try this in java later. Awaiting your quick reply. Thanks Ganesh K

2 1

Building BaseX
by Adrien Guillon 17 Mar '10

17 Mar '10

I want to build my own version of BaseX... I'm on Kubuntu 9.10 and do all my work through the command line (no eclipse for me). I ran make clean && make at the root of the project and I get a bunch of errors. This is a fresh build. What I want is to build a version of the source code with debugging enabled (-g). If there is already a way to do this please let me know. It looks like I need a stub function or something for XQJ ? Here are the errors: aj@laptopzilla:~/basex_src/clean/basex$ make test -r sourcelist || find src -regex '.*/[^./]*\.java' > sourcelist test -e bin || mkdir bin javac -sourcepath src -d bin @sourcelist src/org/basex/api/xqj/BXQDataSource.java:7: package javax.xml.xquery does not exist import javax.xml.xquery.XQConnection; ^ src/org/basex/api/xqj/BXQDataSource.java:8: package javax.xml.xquery does not exist import javax.xml.xquery.XQDataSource; ^ src/org/basex/api/xqj/BXQDataSource.java:9: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQDataSource.java:17: cannot find symbol symbol: class XQDataSource public final class BXQDataSource implements XQDataSource { ^ src/org/basex/api/xqj/BXQConnection.java:5: package javax.xml.xquery does not exist import javax.xml.xquery.XQConnection; ^ src/org/basex/api/xqj/BXQConnection.java:6: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQConnection.java:7: package javax.xml.xquery does not exist import javax.xml.xquery.XQExpression; ^ src/org/basex/api/xqj/BXQConnection.java:8: package javax.xml.xquery does not exist import javax.xml.xquery.XQMetaData; ^ src/org/basex/api/xqj/BXQConnection.java:9: package javax.xml.xquery does not exist import javax.xml.xquery.XQPreparedExpression; ^ src/org/basex/api/xqj/BXQConnection.java:10: package javax.xml.xquery does not exist import javax.xml.xquery.XQStaticContext; ^ src/org/basex/api/xqj/BXQDataFactory.java:12: package javax.xml.xquery does not exist import javax.xml.xquery.XQDataFactory; ^ src/org/basex/api/xqj/BXQDataFactory.java:13: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQDataFactory.java:14: package javax.xml.xquery does not exist import javax.xml.xquery.XQItem; ^ src/org/basex/api/xqj/BXQDataFactory.java:15: package javax.xml.xquery does not exist import javax.xml.xquery.XQItemType; ^ src/org/basex/api/xqj/BXQDataFactory.java:16: package javax.xml.xquery does not exist import javax.xml.xquery.XQSequence; ^ src/org/basex/api/xqj/BXQDataFactory.java:17: package javax.xml.xquery does not exist import javax.xml.xquery.XQSequenceType; ^ src/org/basex/api/xqj/BXQAbstract.java:14: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQAbstract.java:15: package javax.xml.xquery does not exist import javax.xml.xquery.XQItemType; ^ src/org/basex/api/xqj/BXQDataFactory.java:39: cannot find symbol symbol: class XQDataFactory class BXQDataFactory extends BXQAbstract implements XQDataFactory { ^ src/org/basex/api/xqj/BXQConnection.java:19: cannot find symbol symbol: class XQConnection final class BXQConnection extends BXQDataFactory implements XQConnection { ^ src/org/basex/api/xqj/BXQDataSource.java:27: cannot find symbol symbol : class XQConnection location: class org.basex.api.xqj.BXQDataSource public XQConnection getConnection(final Connection c) throws XQException { ^ src/org/basex/api/xqj/BXQDataSource.java:27: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataSource public XQConnection getConnection(final Connection c) throws XQException { ^ src/org/basex/api/xqj/BXQDataSource.java:31: cannot find symbol symbol : class XQConnection location: class org.basex.api.xqj.BXQDataSource public XQConnection getConnection(final String name, final String pw) { ^ src/org/basex/api/xqj/BXQDataSource.java:43: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataSource public String getProperty(final String key) throws XQException { ^ src/org/basex/api/xqj/BXQDataSource.java:59: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataSource public void setProperties(final Properties prop) throws XQException { ^ src/org/basex/api/xqj/BXQDataSource.java:64: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataSource throws XQException { ^ src/org/basex/api/xqj/BXQMetaData.java:6: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQMetaData.java:7: package javax.xml.xquery does not exist import javax.xml.xquery.XQMetaData; ^ src/org/basex/api/xqj/BXQMetaData.java:16: cannot find symbol symbol: class XQMetaData final class BXQMetaData extends BXQAbstract implements XQMetaData { ^ src/org/basex/api/xqj/BXQConnection.java:25: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public void commit() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:29: cannot find symbol symbol : class XQExpression location: class org.basex.api.xqj.BXQConnection public XQExpression createExpression() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:29: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public XQExpression createExpression() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:33: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection public XQExpression createExpression(final XQStaticContext sc) ^ src/org/basex/api/xqj/BXQConnection.java:33: cannot find symbol symbol : class XQExpression location: class org.basex.api.xqj.BXQConnection public XQExpression createExpression(final XQStaticContext sc) ^ src/org/basex/api/xqj/BXQConnection.java:34: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:44: cannot find symbol symbol : class XQMetaData location: class org.basex.api.xqj.BXQConnection public XQMetaData getMetaData() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:44: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public XQMetaData getMetaData() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:49: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection public XQStaticContext getStaticContext() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:49: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public XQStaticContext getStaticContext() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:55: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:54: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final InputStream is, ^ src/org/basex/api/xqj/BXQConnection.java:55: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:59: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final InputStream is) ^ src/org/basex/api/xqj/BXQConnection.java:60: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:65: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:64: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final Reader r, ^ src/org/basex/api/xqj/BXQConnection.java:65: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:69: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final Reader r) ^ src/org/basex/api/xqj/BXQConnection.java:70: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:75: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:74: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final String query, ^ src/org/basex/api/xqj/BXQConnection.java:75: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:83: cannot find symbol symbol : class XQPreparedExpression location: class org.basex.api.xqj.BXQConnection public XQPreparedExpression prepareExpression(final String query) ^ src/org/basex/api/xqj/BXQConnection.java:84: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:88: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public void rollback() throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:92: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public void setAutoCommit(final boolean ac) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:97: cannot find symbol symbol : class XQStaticContext location: class org.basex.api.xqj.BXQConnection public void setStaticContext(final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQConnection.java:97: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQConnection public void setStaticContext(final XQStaticContext sc) throws XQException { ^ src/org/basex/api/xqj/BXQItemType.java:6: package javax.xml.xquery does not exist import javax.xml.xquery.XQItemType; ^ src/org/basex/api/xqj/BXQItemType.java:7: package javax.xml.xquery does not exist import javax.xml.xquery.XQSequenceType; ^ src/org/basex/api/xqj/BXQItemType.java:18: cannot find symbol symbol: class XQItemType final class BXQItemType implements XQItemType { ^ src/org/basex/api/xqj/BXQDataFactory.java:49: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final URI uri) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:53: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory public BXQItemType createAtomicType(final int b) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:59: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final QName qn2, final URI uri) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:64: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:70: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory public BXQItemType createCommentType() throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:75: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItemType createDocumentElementType(final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:76: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:85: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItemType createDocumentSchemaElementType(final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:86: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:95: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory public BXQItemType createDocumentType() throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:101: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final QName qn2, final URI uri, final boolean n) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:107: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:111: cannot find symbol symbol : class XQItem location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItem(final XQItem v) throws XQException { ^ src/org/basex/api/xqj/BXQItem.java:14: package javax.xml.xquery does not exist import javax.xml.xquery.XQConnection; ^ src/org/basex/api/xqj/BXQItem.java:15: package javax.xml.xquery does not exist import javax.xml.xquery.XQException; ^ src/org/basex/api/xqj/BXQItem.java:16: package javax.xml.xquery does not exist import javax.xml.xquery.XQItemType; ^ src/org/basex/api/xqj/BXQItem.java:17: package javax.xml.xquery does not exist import javax.xml.xquery.XQResultItem; ^ src/org/basex/api/xqj/BXQItem.java:41: cannot find symbol symbol: class XQResultItem final class BXQItem extends BXQAbstract implements XQResultItem { ^ src/org/basex/api/xqj/BXQDataFactory.java:111: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItem(final XQItem v) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:122: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromAtomicValue(final String v, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:123: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:133: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromBoolean(final boolean v, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:134: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:139: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromByte(final byte v, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:140: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:145: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory final String base, final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:145: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final String base, final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:151: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:151: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:156: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromDocument(final Source s, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:157: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:162: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:162: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:169: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:169: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory final XQItemType it) throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:174: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromDouble(final double v, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:175: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ src/org/basex/api/xqj/BXQDataFactory.java:180: cannot find symbol symbol : class XQItemType location: class org.basex.api.xqj.BXQDataFactory public BXQItem createItemFromFloat(final float v, final XQItemType it) ^ src/org/basex/api/xqj/BXQDataFactory.java:181: cannot find symbol symbol : class XQException location: class org.basex.api.xqj.BXQDataFactory throws XQException { ^ 100 errors make: *** [bin] Error 1 rm sourcelist

2 3

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

BaseX-Talk