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Re: [basex-talk] New basex-version -> broken paths
by Günter Dunz-Wolff 04 Sep '17

04 Sep '17

Hi Michael, thanks for the information. I changed let $tokens := doc("tokens.xml")//entry to let $tokens := fetch:xml("tokens.xml")//entry (tokens.xml is in the same directory as the xq-file.) The problem is still the same: [bxerr:BXFE0001] Resource "/Users/User/tokens.xml (No such file or directory)" not found. The path should be: /Users/User/Documents/project/BaseXWeb/tokens.xml Same problems with RESTPATH empty or path to project-folder. As I wrote, I have only problems with the REST-Service, not with RESTXQ. Best, Guenter

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Simple Map Operator in oXygen XML (XQJ)
by Omar Siam 04 Sep '17

04 Sep '17

Hi! I just tried to use ther Simple Map Operator while writing an XQuery in oXygen XML and executing the query using a client/server BaseX 8.6.6 data source. I configured it as described here: http://docs.basex.org/wiki/Integrating_oXygen When I use the Simple Map Operator (!) I only get "Invalid XQuery syntax, syntax does not pass static validation.". For example using "(1 to 10) ! element node { . }" If I run that XQuery in DBA for example it works. Any ideas? Best regards Omar Siam

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New basex-version -> broken paths
by Günter Dunz-Wolff 04 Sep '17

04 Sep '17

Hi all, I updated my aged basex-version (8.5.3) to 8.6.6. With the new version, my defined file-references are broken, for example: let $style := doc('../xq_diff/remove_elements_from_doc.xsl‘) Even files in the same directory with the XQuery-file (corrigenda.xq) like: let $tokens := doc(„tokens.xml") With 8.5.3 the REST-Requests with http://localhost:8984/rest?run=xqs/corrigenda.xq <http://localhost:8984/rest?run=xqs/corrigenda.xq> worked without problems. With 8.6.6 and with the same request I’ll get the following error: Stopped at ., 11/18: [FODC0002] Resource '/Users/xq_diff/remove_elements_from_doc.xsl' does not exist OR Stopped at ., 79/26: [FODC0002] Resource '/Users/xxx/kleist_tokens.xml' does not exist. It does work in BaseXGUI but not with the http-server. Thanks for any help, Guenter

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file:name -> admin permission required
by Günter Dunz-Wolff 01 Sep '17

01 Sep '17

Hi all, I updated my older basex-version, now I get in my RESTXQ-App the error 'admin permission required‘ with let $collection := collection("data/stories") for $doc in $collection let $file_name := file:name($doc) return $file_name Whats going wrong? Thanks for any help. Guenter

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Best practice for storing timestamp information in XML
by Dave Day 31 Aug '17

31 Aug '17

Greetings List, I've got an 8 byte value that is the output of a Store Clock instruction on a mainframe. The value created by the instruction is a 64 bit hex value where bit 51 is equal to one microsecond. To get a value that is microseconds, the original clock value is shifted to the right 12 bits. The clock started at all 0's on January 1st, 1900. I need to be able to store and do basic math(addition and subtraction) on the value in microseconds. And, these values will need to be displayed on a browser in HH:MM:SS.TTTTTT format. If I create the decimal value for the integer on the mainframe when creating the XML record, I will have to go thru some conversion logic. There could be possibly millions of these records in one XML database. It seems to me to make more sense to create the value as a hexBinary element, and then have some code running within BaseX do the conversion to create the correct time value. Is this the way to do something like this? Regards, -- Dave Day

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Old dog trying to learn some new tricks.
by Dave Day 29 Aug '17

29 Aug '17

Greetings BaseX list, I've got some very basic questions I was hoping I could get the answers to on this list. Questions really break down into two categories. My background is strictly on IBM mainframes, so please bear with me. 1)Some XML schema questions, and 2)Questions regarding how to configure/use BaseX for what I want to do. XML schema. I've got a record definition created by IBM that changes somewhat depending upon the release of the system. I want to create XML schema for each release dependent definition, and then make that definition available to BaseX. I thought using namespaces was the way to go, but now am not sure. What I was hoping to do was to connect to a running BaseX, and send the schema definitions that would be used to validate the XML. In reading doc, I see it is possible to create namespaces and use them, but the format has to be either a URL or a URN. Is it possible to create a URN for a namespace on the fly, and then tell the code later on which namespace to use? Regards, -- Dave Day

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Test message. Just to see if it works.
by Dave Day 28 Aug '17

28 Aug '17

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XUDY0016 error
by Britney Fox 25 Aug '17

25 Aug '17

Hello, I get this error: [XUDY0016] Documents in path '...' can only be replaced once. Code : XUDY0016 Description : In a replace expression, a target is replaced more than once. Examples : let $a := <x>x</x>/node() return (replace node $a with <a/>, replace node $a with <b/>) Is there a BaseX option to allow multiple "replace" in one query on the same document ?

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Could not reserve enough space for object heap
by Bram Vanroy 25 Aug '17

25 Aug '17

Hi all I'm running into an issue with many databases. I.e. one server instance with millions of databases. When creating all of these, I found that the more databases are included on the instance, the slower further database generation got. For instance, I could see in the logs that in the first < 10.000 databases the creation happened smoothly with around 50ms per file of 1-4kB. However, when having more and more databases for this server instance, things got very slow: for an XML file of 1-4kB the logs show ~600ms. This is terribly slow, as you can imagine. At first I thought something was wrong with my hardware, but I checked on another system and the same issues arises. Then I thought maybe Java is doing something strange, so I figured I'd reboot and see if that cleared some stuff up. But now when I try to launch 'basex' or 'basexserver', I get the following message: Could not reserve enough space for 1433600KB object heap I googled the issue, and it was suggested that I added a JAVA option to my system's variable (I'm on Windows 10 64 bit, BaseX 8.6.4) indicating the memory it could use. I set that to 2048MB. But still the same issue persists. I have contacted the list before, with issues of generating millions of database with the same server instance, and this seems another one related to the problem. I am no expert AT ALL, but isn't it possible there is some sort of micro memory leak that only becomes apparent when creating an amount of databases of this magnitude? If not, other ideas are welcome as well. At least on how to get rid of the Java error mentioned above. Kind regards Bram Vanroy

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BaseX 8.6.6
by Christian Grün 24 Aug '17

24 Aug '17

Hi there, BaseX 8.6.6 is out. Among other things, we fixed two bugs in the map:merge function and where clauses with predicates, so we recommend you to update to the latest version if you work with BaseX 8.6.x. Apart from that, binary data handling was tweaked a lot: The Binary and Conversion Modules will now be much faster if you iterate over single bytes. Have fun everyone, Christian PS: I’ll be offline most of the time until Sep 15. Thanks everyone for keeping the mailing list alive!

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