BaseX-Talk

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5252 discussions

analyze-string
by Graydon Saunders 23 Apr '20

23 Apr '20

So if I create a query in the BaseX 9.3.2 GUI, thus: declare function local:processMatch($in as text(),$matchPattern as xs:string) as item()+ { let $search as element() := analyze-string(normalize-space($in),$matchPattern) return $search }; let $example := <para>These are a bunch of words, and some of the words are <em>special</em> words.</para> for $text in $example//text() return local:processMatch($text,'bunch|special') I get: <fn:analyze-string-result xmlns:fn="http://www.w3.org/2005/xpath-functions"> <fn:non-match>These are a </fn:non-match> <fn:match>bunch</fn:match> <fn:non-match> of words, and some of the words *are*</fn:non-match> </fn:analyze-string-result> <fn:analyze-string-result xmlns:fn="http://www.w3.org/2005/xpath-functions"> <fn:match>special</fn:match> </fn:analyze-string-result> <fn:analyze-string-result xmlns:fn="http://www.w3.org/2005/xpath-functions"> <fn:non-match>words.</fn:non-match> </fn:analyze-string-result> The trailing space after the *are* in the second fn:non-match element is gone. Should that happen? Can I make it stop happening by invoking the function differently? Thanks! Graydon

2 1

A question about RESTXQ rest:form-param()
by Zimmel, Daniel 23 Apr '20

23 Apr '20

Hi, in an HTML form with a RESTXQ POST action, do I really have to declare %rest:form-param() for every param, or is there a way to pass the full query component in one parameter? Best, Daniel

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Create a document in a created database
by Ramzi Hammouda 20 Apr '20

20 Apr '20

Hello BaseX team, This may sound simple, but didn't find how to do it, what is the xquery for creating an empty xml document in a chosen database. Thanks. P Respectons ensemble l'environnement. N'imprimez ce message que si n?cessaire. Let's respect the environment together. Only print this message if necessary.

3 2

Error in the text for the server protocol?
by Ben Engbers 16 Apr '20

16 Apr '20

Hi Michael, I only noticed today that in the server procol (https://docs.basex.org/wiki/Server_Protocol) there are 2 different instructions for adding a new resource. On page 3: ADD \09 {name} {path} {input} On page 6: void add(String path, InputStream input) I has been pure luck that I mixed both instructions. I have implemented ADD as \09 {path} {input} and that works perfectly. Session$Add("Test.xml", "<Line_1 line='1'>Content 1</Line_1>") adds resource Test.xml with the xml as content. Meanwhile it is very easy for me to change the instructions that are send to the server so I tried to add {name} to the ADD command. That results in errors. My guess is that you should use either {name} or {path} and that ADD only works on the database in use. Is that correct? Cheers, Ben

1 0

Binding a variable to a sequence
by Ben Engbers 14 Apr '20

14 Apr '20

Hi, I am still trying to improve my R-package and at the moment I am working (again) on the 'Binding' command. I have added this XML to a database: <book title="XQuery" author="Walmsley"/> <book title="Advanced R" author="Wickham"/> This query: for $t in collection("TestDB/Books")/book where $t/@author = "Walmsley" return $t/@title/string() returns: XQuery My command: Bind(Query_3, "$name", list("Walmsley", "Wickham")) sends the following byte-sequence to the server: 57 61 6c 6d 73 6c 65 79 01 57 69 63 6b 68 61 6d 00 00 And this sequence is accepted by the server. In Query_3, I try to bind $name to the sequence: declare variable $name external; for $t in collection('TestDB/Books')/book where $t/@author = $name return $t/@title/string() The query is executed but no results are given. (I had expected that it would return the sequence {"XQuery", "Advanced R"} How should I correct the query-statement? Cheers, Ben

2 1

Unescaping revritten element name
by Mauro Mugnaini 11 Apr '20

11 Apr '20

Hi all, After parsing strings in XML with direct representation (e.g. with CSV and JSON module parsing) the specific entries are represented via elements and their names are rewritten. In particular (as per documentation): "underscores are rewritten to two underscores (__), and characters that are not valid in element names are rewritten to an underscore and the character’s four-digit Unicode.” It is possible to convert back the element’s node name with an XQuery function present in some module? Regards, Mauro

2 2

Write output using proc:execute
by Tim Thompson 09 Apr '20

09 Apr '20

Hello, Is it possible to redirect output from a system command within the proc:execute function? I would like to do something like: proc:execute("echo", ("hello!", "> hello.txt")) but the ">" does not seem to be recognized. Thanks in advance, Tim -- Tim A. Thompson Discovery Metadata Librarian Yale University Library

2 2

Issue - Data Access out of bounds
by Arjan Loeffen 08 Apr '20

08 Apr '20

Dear BaseX people, Got this message and lost my database contents. Any clue on what may have happened? Using BaseX 8.5.3. I know, you'll suggest upgrading, but still, ... 08:46:43.905 127.0.0.1:51534 admin REQUEST [POST] http://localhost:8984/rest/imvertor-jobs-regression 08:46:43.990 127.0.0.1:51534 admin 400 Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 8.5.3 Java: Oracle Corporation, 1.8.0_202 OS: Windows 10, amd64 Stack Trace: java.lang.RuntimeException: Data Access out of bounds: - pre value: 0 - table size: 3033 - first/next pre value: -1/-1 - #total/used pages: 0/0 - accessed page: -1 (0 > -1] at org.basex.util.Util.notExpected(Util.java:62) 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:293) at org.basex.query.value.node.DBNode.<init>(DBNode.java:52) at org.basex.core.cmd.OptimizeAll$DBParser.parse(OptimizeAll.java:209) at org.basex.build.Builder.parse(Builder.java:73) at org.basex.build.DiskBuilder.build(DiskBuilder.java:82) at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:139) at org.basex.core.cmd.OptimizeAll.run(OptimizeAll.java:48) at org.basex.core.Command.run(Co... 86.87 ms 08:46:43.997 127.0.0.1:51534 admin REQUEST [POST] http://localhost:8984/rest/imvertor-models 08:46:44.010 127.0.0.1:51534 admin 404 Database 'imvertor-models' is being updated, or update was not completed. 12.85 ms 08:46:44.013 127.0.0.1:51534 admin REQUEST [POST] http://localhost:8984/rest/imvertor-models-regression 08:46:44.085 127.0.0.1:51534 admin 400 Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 8.5.3 Java: Oracle Corporation, 1.8.0_202 OS: Windows 10, amd64 Stack Trace: java.lang.RuntimeException: Data Access out of bounds: - pre value: 0 - table size: 27452 - first/next pre value: -1/-1 - #total/used pages: 0/0 - accessed page: -1 (0 > -1] at org.basex.util.Util.notExpected(Util.java:62) at org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:455) at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:148) at org.basex.data.Data.kind(Data.java:293) at org.basex.query.value.node.DBNode.<init>(DBNode.java:52) at org.basex.core.cmd.OptimizeAll$DBParser.parse(OptimizeAll.java:209) at org.basex.build.Builder.parse(Builder.java:73) at org.basex.build.DiskBuilder.build(DiskBuilder.java:82) at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:139) at org.basex.core.cmd.OptimizeAll.run(OptimizeAll.java:48) at org.basex.core.Command.run(C... 72.26 ms arjan -- *Arjan Loeffen* Armatiek BV & Armatiek Solutions BV 06-12918997

2 2

One of the map element causes SEPM0017 error
by Arkadiusz Bok 06 Apr '20

06 Apr '20

Hi, I'm trying to run one of unchanged code example from book "XQuery: Search Across a Variety of XML Data 2nd Edition" from publisher O'Reilly Media. |(: XQuery by Priscilla Walmsley (c) 2016 Priscilla Walmsley:) | |(:Example 13-4 Serialization parameters in a map :) xquery version "3.1"; declare namespace prod = "http://datypic.com/prod"; let $map := map { "method": "xml", "version": "1.0", "indent": true(), "cdata-section-elements": (xs:QName("prod:desc"),xs:QName("prod:name")), "use-character-maps": map { "«":"<%", "»":">%" } } let $element := <prod:name>Fleece Pullover</prod:name> return serialize($element,$map) | I'm using BaseX 9.3.2 to do this. But when I'm trying to run code, I get error: |Stopped at C:/Users/Arek/AppData/Local/Temp/example1304.xqy, 16/17: [SEPM0017] item() expected, xs:QName+ found: (Q{http://datypic.com/prod}desc, Q{http://datypic.com/prod}name). | When i remove 9 line with /cdata-section-elements/ element, code runs. Whether is it problem with XQuery implementation or with code? ||||

2 2

Problem with attribute parsing?
by Peter Villadsen 05 Apr '20

05 Apr '20

Hello I was doing some experiments and I ended up with this: let $c := <Class Source='{ttt'></Class> return $c/@Source When this is compiled in the BaseX GUI app, an error message ensues: Error: Stopped at ... /file3, 1/30: [XPST0003] Expecting '}', found '''. Query: let $c := <Class Source='{ttt'></Class> return $c/@Source Query plan: <QueryPlan compiled="false" updating="false"/> Surely that is not correct? If I add a } there, everything is fine: let $c := <Class Source='{ttt}'></Class> return $c/@Source I don't think there is an XML requirement forcing escaping start brace ('{') inside an attribute value? I know that XQuery supports <X A='{...}' /> where the inside of the {} is evaluated to give the value for the A attribute, but the example above is not XQuery, just an XML literal. I am sure I would have noticed this if it were a general problem. Best Regards Peter Villadsen Principal Architect Microsoft Business Applications Group

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