BaseX-Talk

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5250 discussions

Python client issue
by Andrey Fedosenko 04 Apr '18

04 Apr '18

session = BaseXClient.Session('localhost', 1984, 'admin', 'admin') session2 = BaseXClient.Session('localhost', 1984, 'admin', 'admin') session2.execute("check database") query = session.query("collection('database')") for code, item in query.iter(): //some item modification session2.replace("{}.xml".format(item_path), modified_item) The execution of the script stops after the first iteration. How can I read and change data in a single cycle? FYI: for a small database, this works correctly.

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web.xml changed in BaseX 90 to servlet 4.0
by Stefania Axo 04 Apr '18

04 Apr '18

hi I downloaded the latest version of BaseX 9.0 I try to deploy on my WebSphere Liberty (WebSphere Application Server V16.0.0.2 )and got an error because the version of the servlet is now 4.0. CWWKZ0002E: An exception occurred while starting the application BaseX. The exception message was: java.lang.IllegalStateException: com.ibm.wsspi.adaptable.module.UnableToAdaptException: com.ibm.ws.javaee.ddmodel.DDParser$ParseException: CWWKC2262E: The server is unable to process the 4.0 version and the http://xmlns.jcp.org/xml/ns/javaee namespace in the /WEB-INF/web.xml deployment descriptor on line 6. BaseX 8.67 web.xml had <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> Basex 9.0 web.xml has <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://www.oracle.com/webfolder/technetwork/jsc/xml/ns/javaee/web-app_4_0.x… " version="4.0"> I set on the BaseX 90 web.xml the old version of the servlet and that seemed to work. I am not sure if i will encounter other problems though. is the setting necessary in basex 9.0? or am i ok to downgraded for BaseX 90 ? thanks Stefania

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child node problem
by Giuseppe Celano 04 Apr '18

04 Apr '18

Hi All, Thanks for this new release, which looks great! I have found a problem though (see error message below), when running a query like: for $ee in collection("my-path-to-files") where $ee//case[./aspect-values[@sign = "yes"]] return $ee This works in version 8.6.7. The problem seems to be [./aspect-values[@sign = "yes"]]: if I change it in [//aspect-values[@sign = "yes"]] it works fine also in 9.0. Any idea? Thanks. Best, Giuseppe ERROR MESSAGE Error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 9.0 Java: Oracle Corporation, 1.8.0_151 OS: Mac OS X, x86_64 Stack Trace: java.lang.ClassCastException: org.basex.query.value.item.Dummy cannot be cast to org.basex.query.value.node.DBNode at org.basex.query.expr.path.InvDocTest.get(InvDocTest.java:56) at org.basex.query.expr.path.Path.index(Path.java:692) at org.basex.query.expr.path.Path.optimize(Path.java:174) at org.basex.query.expr.path.Path.optimize(Path.java:180) at org.basex.query.expr.path.Path.compile(Path.java:157) at org.basex.query.expr.gflwor.Where.compile(Where.java:53) at org.basex.query.expr.gflwor.Where.compile(Where.java:1) at org.basex.query.expr.gflwor.GFLWOR.compile(GFLWOR.java:101) at org.basex.query.scope.MainModule.comp(MainModule.java:83) at org.basex.query.QueryCompiler.compile(QueryCompiler.java:114) at org.basex.query.QueryCompiler.compile(QueryCompiler.java:105) at org.basex.query.QueryContext.compile(QueryContext.java:299) at org.basex.query.QueryProcessor.compile(QueryProcessor.java:79) at org.basex.core.cmd.AQuery.query(AQuery.java:78) at org.basex.core.cmd.XQuery.run(XQuery.java:22) at org.basex.core.Command.run(Command.java:257) at org.basex.core.Command.execute(Command.java:93) at org.basex.gui.GUI.exec(GUI.java:427) at org.basex.gui.GUI.lambda$4(GUI.java:370) at java.lang.Thread.run(Thread.java:748) Compiling: - pre-evaluate fn:collection([uri]) to document-node() sequence: collection("/Users/mycomputer/Documents/... -> (db:open-pre("documents", 0), ...) - rewrite cached path to = operator: *:aspect-values -> (*:aspect-values/@*:sign = "yes") - rewrite cached path to = operator: *:aspect-values -> (*:aspect-values/@*:sign = "yes") - rewrite descendant-or-self step(s) - apply attribute index for "yes" Optimized Query: for $ee_0 in (db:open-pre("documents", 0), ...) where $ee_0/descendant-or-self::node()/descendant::*:case[(*:aspect-values/@*:sign = "yes")] return $ee_0 Query: for $ee in collection("/Users/mycomputer/Documents/act/03_p-valuesAfterReductionToPerfImp/documents") where $ee//case[./aspect-values[@sign = "yes"]] return $ee Universität Leipzig Institute of Computer Science, Digital Humanities Augustusplatz 10 04109 Leipzig Deutschland E-mail: celano(a)informatik.uni-leipzig.de E-mail: giuseppegacelano(a)gmail.com Web site 1: http://www.dh.uni-leipzig.de/wo/team/ Web site 2: https://sites.google.com/site/giuseppegacelano/

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Is the support for "Events" is stopped in the recent versions?
by Nivas 03 Apr '18

03 Apr '18

Hi All, Is the support for "Events" is stopped in the recent versions of BaseX database? I would like to have a notification mechanism i.e. whenever a particular element changes(specified by xpath), I want an event to be triggered. Is that possible? I would be using basex python client. Thanks in advance. Kind regards, Seeni

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basex install on linux server
by Friedrich Frei 01 Apr '18

01 Apr '18

Sehr geehrte Damen und Herren! Ich möchte mit Ihrem Produkt Webseiten entwickeln, habe aber nie Java benutzt. Wenn Sie eine Anweisung haben, auf deren Grundlage ich die Datenbank installieren könnte. Wenn Sie mir Schritt für Schritt zeigen können, bin ich Ihnen sehr dankbar . Ich benutze Ubuntu Apache2 PHP. Mit freundlichen Grüßen -- Friedrich Frei

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Maven repo 9.0
by Marc van Grootel 31 Mar '18

31 Mar '18

Hi, First of all congrats with the release of the Spring edition. Nice steady pace of quality updates. I wanted to test 9.0 by getting it via de Maven coordinates but noticed that 9.0 wasn't available from the basex Maven repo. Only 9.0-SNAPSHOT and 9.0.1-SNAPSHOT. Is it possible to also make 9.0 available from org.basex:basex-api:9.0 Maven coordinates? --Marc

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Q: Is there a way to update a XML node with subelements
by Harald Freudenberger 30 Mar '18

30 Mar '18

Hello BaseX team I am about to implement a simple web application which displays some items and allows an user to edit one item. So my database is simple: data.xml: <items> <item> <id>1</id> <text>just some text</text> </item> <item> <id>2</id> <text>some other text</text> </item> </items> Now I want to add a new item to this database. For first evaluation I'll use curl to insert a new node with: curl -u admin:admin -i -X PUT -H "Content-Type: application/xml" -d "<item><id>9999</id><text>hello</text></item>" "http://localhost:8984/rest/data/items" The query to check if the new node has been inserted gives: curl -u admin:admin -i -X POST -H "Content-Type: application/xml" -d "<query xmlns='http://basex.org/rest'><text>//item</text></query>" "http://localhost:8984/rest/data" HTTP/1.1 200 OK Content-Type: application/xml; charset=UTF-8 Content-Length: 1416 Server: Jetty(8.1.18.v20150929) <item> <id>1</id> <text>just some text</text> </item> <item> <id>2</id> <text>some other text</text> </item> <item> <id>9999</id> <text>hello</text> </item> Fine. And now I'd like to try the edit an item. I start with fetching the item: curl -u admin:admin -i -X POST -H "Content-Type: application/xml" -d "<query xmlns='http://basex.org/rest'><text>//item[id='9999']</text></query>" "http://10.0.2.2:8984/rest/data" HTTP/1.1 200 OK Content-Type: application/xml; charset=UTF-8 Content-Length: 280 Server: Jetty(8.1.18.v20150929) <item> <id>9999</id> <text>hello</text> </item> Now I do some modifications: <item> <id>9999</id> <text>new text here</text> <newnode>a new node</newnode> </item> And then I want to write back this item with: curl -u admin:admin -i -X POST -H "Content-Type: application/xml" -d "<query xmlns='http://basex.org/rest'><text>replace node /data/items/item[id='9999'] with <item><id>8888</id></item></text></query>" "http://10.0.2.2:8984/rest/crypto" HTTP/1.1 400 Bad Request Content-Type: text/plain;charset=UTF-8 Content-Length: 104 Server: Jetty(8.1.18.v20150929) cvc-type.3.1.2: Element 'text' is a simple type, so it must have no element information item [children]. I tried <command> instead of <query> but the result is always the same. Am I doing something wrong here ? Is there a way to update a node with subelements in BaseX ? Please understand, I am C developer dealing with Linux kernel code most of the time so I am not really familiar with all the web application things. Thanks and regards Harald Freudenberger

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Re: [basex-talk] SSL support for BaseX REST API
by Lizzi, Vincent 22 Mar '18

22 Mar '18

Forwarding to the list... ________________________________ From: Stefania Axo <stefy(a)us.ibm.com> Sent: Wednesday, March 21, 2018 10:05 PM To: Lizzi, Vincent Subject: Re: [basex-talk] SSL support for BaseX REST API ok i was able to set the property of not starting BaseXServer on both Jetty and WebSphere liberty in WEB-INF\web.xml <context-param> <param-name>org.basex.httplocal</param-name> <param-value>true</param-value> </context-param> on the documentation http://docs.basex.org/wiki/Options#HTTPLOCAL<http://docs.basex.org/wiki/Options#HTTPLOCAL> it says "If the option is set to false, the database server will be disabled. " is it the other way around? "If the option is set to true, the database server will be disabled. " thanks Stefania

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SSL support for BaseX REST API
by Giavanna J Richards 22 Mar '18

22 Mar '18

I'm trying to determine how to enable SSL communications with the BaseX server, I have a java server which communicates with BaseX over its REST API for running xquery's. I see in the BaseX changelog that SSL support was added to version 7.5 in 2012 but I haven't been able to find any references to it in the documentation. I found some statements in the jetty.xml file which are commented out and would appear to enable SSL on port 8986. But I'm not at all familiar with jetty. Is there some documentation available for enabling this support? Thanks in advance! Giavanna Richards

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Uncomprehensible (at least to me) behaviour with external bindings
by Marco Lettere 21 Mar '18

21 Mar '18

Hi all, trying to understand why we get the exception [2] running the code [1] in a Java app, I stumbled upon a strange behaviour of the GUI. I rewrote the query to: xquery:eval(" declare variable $_dep as xs:long* external; $_dep[2] * $_dep[2]", map{ "_dep" : (1,2,3)}) obtaining the correct result (4). Anyway if I assign (1,2,3) to a binding through the proper dialog of the UI I get the following exception at execution: Error: Stopped at /home/lettere/git/dasbox-frontend/dasbox-frontend-ui/webapp/ui/resources/js/monitoring/file, 2/12: [FORG0001] Cannot cast to xs:double: (1,2,3). Strangely enough this happens even if I leave the map overriding locally the values for the external parameters in the xquery:eval. The dialog wins? If I rewrite the query like this and remove the parameter values from the dialog: xquery:eval(" declare variable $_dep as xs:long* external := (1,2,3); $_dep[2] * $_dep[2]") I get yet another typecast exception: Error: Stopped at /home/lettere/git/dasbox-frontend/dasbox-frontend-ui/webapp/ui/resources/js/monitoring/file, 2/12: [XPTY0004] Cannot promote xs:integer+ to $_dep as xs:long*: (1, 2, 3). Is there a nice wording to explain all this different behaviour and might it be that the exception we get in the Java embedded version is somehow related to the same? Thanks a lot for helping, Marco. [1] declare variable $_history as xs:long* external; declare variable $_now as xs:dateTime external; declare variable $_dep as xs:long* external; declare variable $dep as xs:long external; $_dep[2] * $_dep[2] [2] Caused by: org.basex.query.QueryException: [FORG0001] Cannot cast to xs:double: [Ljava.lang.Object;@2f0539f0. at org.basex.query.QueryError.get(QueryError.java:1365) ~[BaseX.jar:8.6.7] at org.basex.query.QueryError.castError(QueryError.java:1571) ~[BaseX.jar:8.6.7] at org.basex.query.value.item.Dbl.parse(Dbl.java:180) ~[BaseX.jar:8.6.7] at org.basex.query.value.item.Item.dbl(Item.java:134) ~[BaseX.jar:8.6.7] at org.basex.query.value.type.AtomType.checkLong(AtomType.java:927) ~[BaseX.jar:8.6.7] at org.basex.query.value.type.AtomType$20.cast(AtomType.java:331) ~[BaseX.jar:8.6.7] at org.basex.query.value.type.AtomType$20.cast(AtomType.java:1) ~[BaseX.jar:8.6.7] at org.basex.query.QueryContext.cast(QueryContext.java:733) ~[BaseX.jar:8.6.7] at org.basex.query.QueryContext.bind(QueryContext.java:486) ~[BaseX.jar:8.6.7] at org.basex.query.QueryProcessor.bind(QueryProcessor.java:129) ~[BaseX.jar:8.6.7] at com.nw.basex.xquery.XQueryExecutor.bind(XQueryExecutor.java:89) ~[com.nw.dasbox-2018-03-15.jar:?] at com.nw.basex.xquery.XQueryExecutor.execute(XQueryExecutor.java:107) ~[com.nw.dasbox-2018-03-15.jar:?] at com.nw.dasbox.vdr.resolution.InlineXQueryResolutionEngine.evaluate(InlineXQueryResolutionEngine.java:91) ~[com.nw.dasbox-2018-03-15.jar:?] ... 10 more

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