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

Re: [basex-talk] URLs for BaseX Documents and resolve-uri()
by Eliot Kimber 17 Apr '15

17 Apr '15

Related question: is there a preferred way to determine from within an XQuery function that the current XQuery engine is BaseX? I know I could look to see if a particular BaseX-specific function exists but I was looking for something either more obvious or more general from an XQuery standpoint. Cheers, Eliot ————— Eliot Kimber, Owner Contrext, LLC http://contrext.com On 4/17/15, 10:51 AM, "Eliot Kimber" <ekimber(a)contrext.com> wrote: >I'm migrating XSLT functions for working with DITA documents to XQuery. As >part of this function package I have functions that resolve URI references >from one document to another. This involves creating absolute URLs from >relative URLs using a document or element as the base URI context. > >The problem I'm running into is that the URLs used within BaseX are not >absolute (that is, they don't start with "/". > >For example, document-uri(root($node)) returns: > >dfst^dfst-sample-project^develop/docs/tests/complex_map/complex_map.ditama >p > > >not > >/dfst^dfst-sample-project^develop/docs/tests/complex_map/complex_map.ditam >a >p > >This causes a problem for resolve-uri(), used like this: > >resolve-uri($topicResourcePart, base-uri($topicref)) > > >This fails under BaseX: > >[FORG0002] Base URI is not absolute: "dfst^dfst-sample-project^develo.... > > >These libraries are intended to be generic XQuery so I'm trying to avoid >having any BaseX-specific logic in these functions. > >Is there workaround or other solution to this? > >Obviously, this way of representing document URIs internally is not >something that could be easily changed but it is definitely a problem in >terms of the expectations of URI handling by built-in XQuery functions. > >Thanks, > >Eliot >————— >Eliot Kimber, Owner >Contrext, LLC >http://contrext.com > > > >

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"Input is too large for a single database" error
by Huib Verweij 17 Apr '15

17 Apr '15

Hi Christian, congrats on the new release. I’ve downloaded it yesterday and while importing new data BaseX ran into a “Input is too large for a single database” error. It has been reported before and you mentioned Basex will be using 2^63 bits instead of 2^31 bits for counting nodes. Is there a branch that I could check out that already supports importing up to 2^63 nodes? The “node-counter” branch perhaps? For now I’ll just split the data and see if that works. Hartelijke groet, Huib Verweij

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Is -L command-line option still supported?
by Amanda Galtman 16 Apr '15

16 Apr '15

Hi, The page http://docs.basex.org/wiki/Command-Line_Options lists an option "-L". However, it doesn't seem to work in version 8 and the "-h" output no longer mentions it. Was the -L option removed, perhaps because of changes in the serialization in version 8? This isn't holding up my work. I just came across it and wondered if the documentation needs an update. Cheers, Amanda

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Released: BaseX 8.1.1. Upcoming: Finger trees
by Christian Grün 16 Apr '15

16 Apr '15

Hi all, BaseX 8.1.1 has just been released [1]. It mostly contains minor bug fixes, all of them uncritical. Since recently, our XQuery arrays are based on a Finger tree implementation [2]. This fancy data structure provides much better performance for insert and delete operations. With BaseX 8.2, this data structure is now used for arbitrary sequences. If you want to belong to our early testers, please check out the latest snapshot [3]. We are looking for your feedback! Have fun, Christian [1] http://basex.org/download [2] https://en.wikipedia.org/wiki/Finger_tree [3] http://files.basex.org/releases/latest

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Way to React To Updates Using XQuery?
by Eliot Kimber 16 Apr '15

16 Apr '15

As part of my DITA link management system, I need to create and update various indexes and data structures whenever specific documents are added or updated. I was looking for some sort of trigger or event handler by which I would register an XQuery function and the system would call it on add, update, or delete, but I didn't see anything like that in the docs. Since my updates are, in my case, being driven by git commit hooks I could have the commit hook call a function following updates and pass that function the list of added, updated, and deleted docs. But that would not support the case where documents were loaded by some other route. Is such a mechanism available? Thanks, Eliot ————— Eliot Kimber, Owner Contrext, LLC http://contrext.com

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Xquery update performance on Base 8.1
by Erol Akarsu 15 Apr '15

15 Apr '15

Hello, I am having noticeable performance degradation for updating existing database in this function with Basex 81. I can say this function never finish with 81. But when I replace nodes call with file:append (writing result to a file), I can see it is slowness. But Basex_79 is much faster than Basex81 with regard to this update and finish this function quickly without any issue. I like to upgrade to 81 but because of this issue I could not. Can you help me? declare %updating function local:addCRMSegmentsIntoProducts () { let $allProds := fn:doc("AccumulatedProducts") let $segments := ("Aburcubur","Ãay_Kahve","Ä°Ã§ecek","Karma_Az","Meyve_Sebze","SaÃ§_BakÄ±m","SÃ¼t_Su-Madeaze_TÃ¼ketim","Temizlik") let $productsMap := map:new( for $rec in $allProds//doc let $prodIDField := $rec/field[@name eq "ProductID"] let $pid := $prodIDField/text() return map:entry($pid,$prodIDField)) for tumbling window $prodGroup in fn:doc("CRMSegments")//record start $first next $second when fn:true() end $last next $beyond when $last/PRODUCT_ID ne $beyond/PRODUCT_ID let $pid := $prodGroup[1]/PRODUCT_ID return let $prodEntry := map:get($productsMap,$pid)/.. return if (fn:empty($prodEntry)) then () else let $segData := for $segGroup in $prodGroup let $sid := $segGroup/SON_SEGMENT/text() let $sid := fn:concat("10",fn:index-of($segments,$sid)) group by $sid return let $segAmount := sum($segGroup//AMOUNT/text()) let $segOrderCount := sum($segGroup//ORDER_COUNT) let $segFields := (<field name="SegAmount_{$sid}">{$segAmount}</field>, <field name="SegOrderCount_{$sid}">{$segOrderCount}</field>) return $segFields return insert nodes ($segData) as last into $prodEntry };

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A question about the type system
by Kristian Kankainen 15 Apr '15

15 Apr '15

Hello! I'm not sure whether this is a question relevant to BaseX or more generally to the XQuery community. Since I don't use other XQuery systems and it might be specific to the BaseX parser, I post it here first. Why can't I specify xs:positiveIntegers as literals? Or why can't I treat xs:integers as xs:positiveIntegers? Consider a simple function that takes a xs:positiveInteger as input: <code> xquery version "3.0" encoding "UTF-8"; declare namespace local = "local"; declare function local:positive( $input as xs:positiveInteger ) as xs:positiveInteger { $input }; </code> I get an error XPTY0004 Cannot treat xs:integer as xs:positiveInteger if I run it with a literal input, like this: <code> local:positive(2) </code> I get no error if I specify the type explicitly, like this: <code> local:positive(xs:positiveInteger(2)) </code> This feel very odd, since the type system is hierarchical and xs:positiveInteger is a subcase of xs:integer, I don't really see a problem of this kind of automatic casting of integer literals if they qualify the cast. Can you give any reflection on this? Best regards Kristian Kankainen

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IllegalMonitorStateException at org.basex.core.locks.DBLocking
by Simon Chatelain 14 Apr '15

14 Apr '15

Hello all, I have the following problem. Using: BaseX 8.1.1 beta cf713e2 (20150328.133759) Java 1.8.0_31 Windows 7 The context: I have several sources of data from which I receive XML documents. My application will create a collection for each of these sources and store each received document into the collection corresponding to the source, and then update some kind of metadata about the collection. The metadata of all collections are stored into a common collection. Each source is handled by a different thread. I am using an embedded BaseX, and access to it through LocalSession. Now the problem is that after a certain amount of time (not constant, could be seconds or minutes) there is some exceptions. Either: java.lang.IllegalMonitorStateException at org.basex.core.locks.DBLocking.acquire and org.basex.core.locks.DBLocking.release Or: java.util.ConcurrentModificationException at org.basex.core.users.User.find I put the full stack trace in attachment. I build a test application that mimic what happens in the real application and it seems to exhibit the same problem. The source of this test application is attached My question: Am I doing something wrong, or is there a bug in BaseX? Thanks a lot Simon

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Re: [basex-talk] Mystery Failure on REPLACE but Not ADD
by Eliot Kimber 13 Apr '15

13 Apr '15

It's definitely a function of my local .basex settings. If I revert to the default settings (make the basex install dir .basexhome and remove ~/.basex) then the replace succeeds. Trying to figure out what the setting is that results in the failure. Cheers, E. ————— Eliot Kimber, Owner Contrext, LLC http://contrext.com On 4/12/15, 11:36 AM, "Eliot Kimber" <ekimber(a)contrext.com> wrote: >Using the basex Zip distribution for both 8.0.3 and 8.1, I'm getting a >failure on REPLACE but not ADD for the same XML data. > >This command succeeds: > >basexclient -c "CHECK dfst_dfst-sample-project_master; OPEN >dfst_dfst-sample-project_master; ADD to dfst/metadata.xml ><dfst_metadata/>" > > >But this command fails > >basexclient -c "CHECK dfst_dfst-sample-project_master; OPEN >dfst_dfst-sample-project_master; REPLACE dfst/metadata.xml ><dfst_metadata/>" > >"..." (Line 1): Premature end of file. > > >This definitely worked in the past, so something must have changed on my >system. > >Obviously, the error message is not very helpful in this case. > >Any idea what the problem might be or how I would diagnose this failure? > >Thanks, > >E. > >————— >Eliot Kimber, Owner >Contrext, LLC >http://contrext.com > > > >

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xpointer
by Jerome Chauveau 13 Apr '15

13 Apr '15

Hi, Are xpointer implemented in BaseX 8? I tried to add an xpointer attribute in an xinclude element but it failed. [a] <xi:include href="plop.xml"/> [b] <xi:include href="plop.xml" xpointer="myId"/> [a] works fine but [b] fails (Fallback is called). Thanks for help, Jérôme.

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Documentation on Module Imports Missing a Detail
by Eliot Kimber 12 Apr '15

12 Apr '15

I was trying to have a RESTXQ module import a library module stored in the configured REPO directory. I copied my module into that directory and verified that it was listed: Name Version Type Path ----------------------------------------------------- basex-utils - Internal basex-utils.xqm dita-utils - Internal dita-utils.xqm linkmgmt-utils - Internal linkmgmt-utils.xqm relpath-utils - Internal relpath-utils.xqm 4 package(s). Where I want to import the basex-utils module. The docs say: <lq> Repository modules are stored in a directory named BaseXRepo or repo, which resides in your home directory <http://docs.basex.org/wiki/Configuration#Home_Directory>. XQuery modules can be manually copied to the repository directory or installed and deleted via commands <http://docs.basex.org/wiki/Repository#Commands>. If a modules is placed in the repository, there is no need to specify a location. </lq> However, this import failed to find the module: import module namespace bxutil="http://dita-for-small-teams.org/xquery/modules/basex-utils"; But, after I did an explicit REPO INSTALL on the module, BaseX put it in a directory that mirrors the namespace URL structure. At that point the import succeeded. Thus, it appears that the module needs to be installed or otherwise stored in a directory that mirrors the namespace declaration--it is not sufficient to simply copy the module into the repo directory. I think this assumption that the namespace URI will be a URL is not valid. If I create a module that uses a URN for the namespace URI, I get this failure on REPO INSTALL: [bxerr:BXRE0002] URI is invalid or has no path component: 'urn:names:xquerymodule:testurn'. In the case of URNs, the token separator is ":", so you could treat each token as a directory name. Cheers, Eliot

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Mystery Failure on REPLACE but Not ADD
by Eliot Kimber 12 Apr '15

12 Apr '15

Using the basex Zip distribution for both 8.0.3 and 8.1, I'm getting a failure on REPLACE but not ADD for the same XML data. This command succeeds: basexclient -c "CHECK dfst_dfst-sample-project_master; OPEN dfst_dfst-sample-project_master; ADD to dfst/metadata.xml <dfst_metadata/>" But this command fails basexclient -c "CHECK dfst_dfst-sample-project_master; OPEN dfst_dfst-sample-project_master; REPLACE dfst/metadata.xml <dfst_metadata/>" "..." (Line 1): Premature end of file. This definitely worked in the past, so something must have changed on my system. Obviously, the error message is not very helpful in this case. Any idea what the problem might be or how I would diagnose this failure? Thanks, E. ————— Eliot Kimber, Owner Contrext, LLC http://contrext.com

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HTTP Server Not Serving Any RESTXQ Results
by Eliot Kimber 12 Apr '15

12 Apr '15

I'm trying to set up some basic Web services using the basexhttp server. I'm on OS X. If I understand the docs, after running the basexhttp command, I should get the sample HTML start page returned by page:start() function defined in the restxq.xqm file when I go to http://localhost:8984 However I'm not getting that page, I'm getting a 404 response from the Jetty server: HTTP ERROR 404Problem accessing /. Reason: No function found that matches the request. Powered by Jetty:// I verified that restxq.xqm is a loaded module: > repo list Name Version Type Path ------------------------------------- - Internal .DS_Store restxq - Internal restxq.xqm 2 package(s). > I'm sure this worked when I first started playing with BaseX and installed it initially. I tried both 8.0.3 (the first version I used) and 8.1 with no difference. I must have done something to the configuration to cause this problem but I don't see any obvious mistake on my part: I haven't knowingly changed the web.xml or jetty.xml files and web.xml seems to clearly enable handling of root URLs by the RESTXQ handler: <servlet> <servlet-name>RESTXQ</servlet-name> <servlet-class>org.basex.http.restxq.RestXqServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>RESTXQ</servlet-name> <url-pattern>/*</url-pattern> </servlet-mapping> The WebDAV service does work: I can retrieve files from specific databases using the WeDAV url. Any suggestions on where my configuration might be bad? Thanks, Eliot ————— Eliot Kimber, Owner Contrext, LLC http://contrext.com

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Bug? Local variable has not been allocated a stack frame slot
by Marc van Grootel 09 Apr '15

09 Apr '15

Hi, I have hit something which is related to Saxon XSLT. The XSLT in question runs fine standalone (via Oxygen). But when hooked up via RESTXQ I get the type of tracebacks (i've listed all traceback from where it enters Saxon code below). Although I don't have a full repro case I did manage to make it run by modyfing the expr inside the "group-starting-with". The code below uses a local variable $i in a predicate. This causes the error below. <xsl:for-each-group select="$v" group-starting-with="v[xs:integer(@c) eq $i][text()]"> ... </xsl:for-each-group> The code below runs without problems. Here it's not accessing the local variable inside the grouping attribute. <xsl:for-each-group select="$v" group-starting-with="v[text()]"> ... </xsl:for-each-group> Any idea if this is Saxon or BaseX issue? --Marc This is the top of the traceback. Version: BaseX 8.1 Java: Oracle Corporation, 1.7.0_25 OS: Windows 7, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: Local variable $i has not been allocated a stack frame slot at net.sf.saxon.expr.LocalVariableReference.evaluateVariable(LocalVariableReference.java:102) at net.sf.saxon.expr.VariableReference.iterate(VariableReference.java:453) at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:173) at net.sf.saxon.expr.SingletonAtomizer.evaluateItem(SingletonAtomizer.java:36) at net.sf.saxon.expr.ValueComparison.effectiveBooleanValue(ValueComparison.java:692) at net.sf.saxon.pattern.PatternWithPredicate.matches(PatternWithPredicate.java:139) at net.sf.saxon.pattern.PatternWithPredicate.matches(PatternWithPredicate.java:131) at net.sf.saxon.expr.sort.GroupStartingIterator.advance(GroupStartingIterator.java:47) at net.sf.saxon.expr.sort.GroupMatchingIterator.next(GroupMatchingIterator.java:75) at net.sf.saxon.expr.instruct.ForEachGroup.processLeavingTail(ForEachGroup.java:743) at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:875) at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:138) at net.sf.saxon.expr.instruct.UserFunction.process(UserFunction.java:382) at net.sf.saxon.expr.UserFunctionCall.process(UserFunctionCall.java:507) at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:662) at net.sf.saxon.expr.instruct.Instruction.process(Instruction.java:138) at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:431) at net.sf.saxon.expr.instruct.ElementCreator.processLeavingTail(ElementCreator.java:373) at net.sf.saxon.expr.instruct.Template.applyLeavingTail(Template.java:239) at net.sf.saxon.trans.Mode.applyTemplates(Mode.java:1057) at net.sf.saxon.expr.instruct.ApplyTemplates$ApplyTemplatesPackage.processLeavingTail(ApplyTemplates.java:519) at net.sf.saxon.expr.instruct.CallTemplate.process(CallTemplate.java:349) at net.sf.saxon.expr.instruct.DocumentInstr.evaluateItem(DocumentInstr.java:323) at net.sf.saxon.expr.instruct.DocumentInstr.evaluateItem(DocumentInstr.java:56) at net.sf.saxon.expr.parser.ExpressionTool.evaluate(ExpressionTool.java:328) at net.sf.saxon.expr.LetExpression.eval(LetExpression.java:398) at net.sf.saxon.expr.LetExpression.processLeavingTail(LetExpression.java:604) at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:875) at net.sf.saxon.expr.LetExpression.processLeavingTail(LetExpression.java:613) at net.sf.saxon.expr.instruct.Choose.processLeavingTail(Choose.java:875) at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:660) at net.sf.saxon.expr.instruct.Template.expand(Template.java:258) at net.sf.saxon.expr.instruct.CallTemplate$CallTemplatePackage.processLeavingTail(CallTemplate.java:536) at net.sf.saxon.Controller.transformDocument(Controller.java:2082) at net.sf.saxon.Controller.transform(Controller.java:1903) at org.basex.query.func.xslt.XsltTransform.transform

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BaseX 8.1 cannot be deployed in a resin server
by George Karakatsiotis 08 Apr '15

08 Apr '15

Hi, While I have been able to deploy basex7.9+ to a resin web server, Basex 8.1 fails with a "Custom bean class 'org.basex.http.ServletListener' is abstract. Bean classes must be public, concrete, and have a zero-argument constructor." error message. Is there a reason why org.basex.http.ServletListener is abstract? I don't see any abstract methods and no other class is extending it. Thank you for your time, George Karakatsiotis

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BaseX under JBoss 6.2
by Bondeson, Carl 07 Apr '15

07 Apr '15

I have a deployment that is using 2 instances of BaseX. The first is using the default ports, then second is using alternate ports. Deploying the war goes smoothly, and both instances get along. When attempting to disable the deployment using the management console the process never completes. In looking at the log file the following error was noted. 10:00:31.159 SERVER admin OK Server was started. 10:02:19.876 SERVER admin Error: File 'C:/Users/DPHPIL~1/AppData/Local/Temp/BaseXServer1984' could not be deleted. It seems that even though the second instance is using 1982 as the port, the default port is being in this transaction. The versions in use are 7.6 and 7.9. Is there something from a configuration standpoint that needs to be set in order for the shutdown process to use the correct, non-default port? Carl R Bondeson Systems Developer Department of Public Health Data Processing 410 Capitol Ave Hartford, CT 06134 Phone: 860-509-7434 carl.bondeson(a)ct.gov<mailto:carl.bondeson@ct.gov> [Description: DPH Logo - Keeping CT Healthy]<http://www.ct.gov/dph>

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Used memory value
by Joseph 07 Apr '15

07 Apr '15

Hi, When I open Basex 8.3 GUI, the value of the used memory keeps growing up/changing fast, even though I do not do anything. Since this does not happen with Basex 7.9, is this due to Java? (I run Java 1.8.X) Thanks, Joseph

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%unit:ignore broken since 8.0?
by Marc van Grootel 07 Apr '15

07 Apr '15

Hi, Could it be that %unit:ignore("message") is broken since 8.0. Whenever I use a message in the annotation my tests fail with this error message: <error line="149" column="21" type="bxerr:BASX0006"> <info>%unit:ignore: 1 argument supplied.</info> </error> When ("mesage") is removed the test is ok. Documentation let's me believe %unit:ignore("message") is still supported. --Marc

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Truncated results
by Joseph 07 Apr '15

07 Apr '15

Hi, I have noticed that when using the update facility, for example the replace expression, results for a long file may be cut off. This however does not happen if I use the non-updating expression (copy/modify): does this make sense to you? Thanks. Joseph

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exception
by Ertan Tike 07 Apr '15

07 Apr '15

Hi, I'm trying to optimize all previously existing databases created with older versions of basex. I have tried couple of different scenarios but all failed with an error message. How can I fix this error ? I have executed the following query for $d in db:list() return db:optimize($d, true(), map { 'autooptimize' : true(), 'updindex' : true() } ) but on some databases i get following error: Error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 8.1 Stack Trace: java.lang.ArrayIndexOutOfBoundsException at org.basex.io.random.TableDiskAccess.fpre(TableDiskAccess.java:503) at org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:455) at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:148) at org.basex.data.Data.kind(Data.java:307) at org.basex.query.value.node.DBNode.<init>(DBNode.java:53) at org.basex.core.cmd.OptimizeAll$DBParser.parse(OptimizeAll.java:201) at org.basex.build.Builder.parse(Builder.java:75) at org.basex.build.DiskBuilder.build(DiskBuilder.java:87) at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:130) at org.basex.query.up.primitives.db.DBOptimize.apply(DBOptimize.java:102) at org.basex.query.up.DataUpdates.apply(DataUpdates.java:175) at org.basex.query.up.ContextModifier.apply(ContextModifier.java:126) at org.basex.query.up.Updates.apply(Updates.java:134) at org.basex.query.QueryContext.iter(QueryContext.java:364) at org.basex.query.QueryContext.execute(QueryContext.java:605) at org.basex.query.QueryProcessor.execute(QueryProcessor.java:98) at org.basex.core.cmd.AQuery.query(AQuery.java:83) at org.basex.core.cmd.XQuery.run(XQuery.java:22) at org.basex.core.Command.run(Command.java:379) at org.basex.core.Command.execute(Command.java:95) at org.basex.gui.GUI.exec(GUI.java:467) at org.basex.gui.GUI.access$400(GUI.java:41) at org.basex.gui.GUI$7.run(GUI.java:410) Thank you -- Ertan TİKE <http://www.6kare.com>

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BenchX - The curious case of query number 9
by Andy Bunce 07 Apr '15

07 Apr '15

Hi, This is a follow up to the benchmarking work I presented at the user meeting in Prague. I have made some changes to my BenchX application to allow the split option (-s) of xmgen to be used. http://www.xml-benchmark.org/faq.txt I have compared the timings for databases created from sources with and without the -s option. In principle these should provide very similar results. xmlgen /f 0.2 /o folder/auction xmlgen /f 0.2 /o folder/auction /s 400 In the first case a single file auction is created. In the second 35 files (auction00000... auction00034) are created. In both cases the file or files are loaded to a single database to query. In most cases the query performance is very similar. The exception is q09.xq. This appears to be 2 or 3 orders of magnitude slower against the database created from the split sources. The actual query result seems to be the same. I have seen the same performance effect for factors f= 0.2, 0.5, 1 but not the somewhat trival f=0. Any idea what is happening here? Regards /Andy --q09.xq--------- let $auction := collection("benchx-db") return let $ca := $auction/site/closed_auctions/closed_auction return let $ei := $auction/site/regions/europe/item for $p in $auction/site/people/person let $a := for $t in $ca where $p/@id = $t/buyer/@person return let $n := for $t2 in $ei where $t/itemref/@item = $t2/@id return $t2 return <item>{$n/name/text()}</item> return <person name="{$p/name/text()}">{$a}</person>

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xqdoc and basex system modules
by Andy Bunce 07 Apr '15

07 Apr '15

I am looking to generate documentation from the system module stubs in etc/modules.zip. I have two issues 1) There is an issue with inspect.xqm declare namespace xqdoc="http://www.xqdoc.org/1.0"; let $a:=inspect:xqdoc("inspect.xqm")//xqdoc:function[xqdoc:name='inspect:xqdoc']//xqdoc:description return parse-xml-fragment($a) Errors And xqdoc:description looks like <xqdoc:description xmlns:xqdoc="http://www.xqdoc.org/1.0"></code> and end with <code></code> , and tags start with <code>@</code> . xqDoc comments can be specified for main and library modules and variable and function declarations. <p>We have slightly extended the xqDoc conventions to do justice to the current status of XQuery (Schema: <a href=" http://files.basex.org/etc/xqdoc-1.1.30052013.xsd ">xqdoc-1.1.30052013.xsd</a>): </p> <ul> <li> an <code>&lt;xqdoc:annotations/&gt;</code> node is added to each variable or function that uses annotations. The xqdoc:annotation child nodes may have additional <code>xqdoc:literal</code> elements with <code>type</code> attributes (xs:string, xs:integer, xs:decimal, xs:double) and values. </li> <li> a single <code>&lt;xqdoc:namespaces/&gt;</code> node is added to the root element, which summarizes all prefixes and namespace URIs used or declared in the module. </li> <li> name and type elements are added to variables </li> </ul></xqdoc:description> A comment parsing/escaping issue? 2) inspect:xqdoc("array.xqm") and the same with map.xqm Function 'array:size' is in reserved namespace. I guess this is to be expected and maybe I should just ignore any modules in namespaces http://www.w3.org/... I guess it is a result of the code being compiled rather than just documented? /Andy

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Path Summary order
by Cecil Tarasoff 02 Apr '15

02 Apr '15

Hi BaseX Gurus, Thanks for such a powerful reporting tool. I am still a newbie to XML and I would be lost without BaseX. Thank-you! I was wondering whether there is any way to have the path summary output it's result in alphabetical sequence of attributes and then elements? I export the path summary from different versions of the XML and use BeyondCompare to reveal the differences but the inconsistent ordering of the elements and attributes makes this a bit of a challenge. It would be really handy for me if there were an option available where I could elect to output the Path Summary with the attributes sorted alphabetically followed by the elements also in alphabetical order (within their parent). If you could consider this for a future enhancement I would be forever grateful. Of course, if there is an easier way for me to compare XML structure, I would love to know the tricks! Thanks again for your dedication to this os product. Cecil Tarasoff

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require performance improvement suggestion for large size xml
by ankit kumar 31 Mar '15

31 Mar '15

Hi , I am using BaseX for my XML base application. In my application user provides various data filtration criteria. After passing the data through all the filters resultant data is processed for evaluation. For each filter we have created corresponding xquery and output of each filter is passed as input to the next filter for further filtration. What I notice is query execution time except for the first query is very high. From query plan I observed that for the first query indexing was being applied but not for the rest. This may be the case as the subsequent queries where getting fired on the data(sequence created by preceding query) passed on by the previous filter. This was not observed when the xml file was of smaller size , but as I increased the size of xml to 300 MB each query started taking times in minutes. I tried following thing I fired all the filter queries on the database to take advantage of indexing and after every filter execution , I took intersection of output sequence generated by each filter to keep track of final filtered data. The problem with above solution is , intersection query between larger sequence of data started tacking time large amount of time. Is there a way I can increase the performance. Thanks, Ankit

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BaseX 8.1: The Spring Edition
by Christian Grün 28 Mar '15

28 Mar '15

Dear all, Our traditional spring edition has just been released! We are delighted to present BaseX 8.1, our XML database and XQuery 3.1 processor, which gives you the following new features: XQUERY - efficient Finger Tree algorithm for arrays - prof:variables() outputs list of currently bound variables - new higher-order functions: hof:scan-left, hof:take-while WEB APPLICATIONS - the Web Module offers convenience functions for building web apps - RESTXQ: %input annotation; input-specific content-type parameters OPTIONS - RESTPATH: specify server path for queries and command scripts - IGNORECERT: ignore untrusted certificates when connecting to servers COMMAND-LINE - Bind input strings to the query context with -I You find the new release at http://basex.org. We are looking forward to your feedback, Christian BaseX Team

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