BaseX-Talk

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5252 discussions

Die Wahrheit über Diabetes
by Karolin Hertzog 17 Jun '14

17 Jun '14

To stop receiving these emails:http://mail0.diabetesblog.biz/unsubscribe.php?M=75921&C=08a2923af15af1ad713ec0788079def3&L=1&N=2 Hallo, Falls Sie unter Diabetes leide, dann könnte Ihnen dieser Artikel sehr behilflich sein: 3 Geheimnisse zum Fett verbrennen und Blutzucker verbessern: http://www.diabetesblog.biz Diese 3 Tipps sind einfach und Sie können diese „Geheimnisse“ sofort verwenden. Klicken Sie hier um den Artikel zu lesen: http://www.diabetesblog.biz mit freundlichen Grüßen, Karolin Hertzog

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RESTXQ declare base-uri ".";
by Andy Bunce 17 Jun '14

17 Jun '14

Hi, It seems that in restxq mode relative paths for *declare base-uri* are resolved differently [1]. If I have -webapp --folder1 ---mod1.xqm (which has import module namespace xm='test' at 'mod2.xqm';) ---mod2.xqm The import works. If I add declare base-uri "."; to mod1. the import fails, running the same code not via restxq and it works. Is this intended behavior? /Andy [1] http://www.w3.org/TR/2014/REC-xquery-30-20140408/#id-base-uri-decl

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Basex 404
by Lars Johnsen 16 Jun '14

16 Jun '14

I've recently run into a problem with basexserver/basexhttp. The host:8984 responds but seems to have lost contact with the webapp directory. Here is what is happening on 3 out of 5 installations (on linux - installed by unpacking the latest ziparchive), where one used to work as expected: 1) host:8984 do not display the restxq example, but is up and running 2) host:8984/rest shows the list of databases 3) host:8984/rest/run=script-name.xq gives 404 - no function matches request So the server appears to be connected to the database, but won't look at the webapp directory. Where is the best place to look for information? All the best, Lars

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Strategies for "checkout" or explicit file locking
by Alister Pillow 16 Jun '14

16 Jun '14

Hi all, BaseX doesn’t appear to have explicit document-level access control (ownership and permissions). I understand that Write and Read locks are applied during queries - but these are not explicit and only apply during the course of the query. I wonder what strategies other people use to lock a file for “editing”, or “checkout” a file so that only a single user has access (in a multi-user environment). Does anyone manage more than a few users within one instance of BaseX? (e.g. more than 10) Thanks, Alister.

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Multiple basex webapps in same Tomcat
by Marco Lettere 16 Jun '14

16 Jun '14

Hello all, in one of our use cases we have two basex (7.8.1) that run as standalone servers. They act mainly as service wrappers so we mainly use restxq and http client. Only one has a very limited access to the DB functionality. The pattern is that one of the two is called from a tomcat webapp installed on the same machine. It then calls the second which in turn calls another service on a different machine. All of the calls are HTTP. Anyway we have been asked to condense the installation into the same tomcat. I've been trying that but when I install multiple basex webapps I get strange conflicts in the RESTXQ engine. I was able to reproduce the issue just by exploding two wars (named bx1.war and bx2.war) into the tomcat. Then I've altered the "hello/{$world}" annotated example in restxq.xqm to return "hello world 1" and "Hello world 2". At that point whatever context I use in the browser (either bx1 or bx2) I always get "Hello world 2" as a return. I've tried changing the namespace of the module of restxq.xqm and also changing the servlet context for RESTXQ in bx2 but nothing changes. Could you provide me some hints on this? Thanks, Marco.

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Efficiently using BaseX and JAXB
by Zachary DeLuca 10 Jun '14

10 Jun '14

Hello, I have a question about unmarshaling a query result into JAXB object(s). My database collection contains documents that all contain the same type of root element, let's call it Element1. Originally I was doing something like this (I know it's silly but it worked just fine for small data sets): String CLOSING_TAG = "</Element1>"; Context context = ... Unmarshaller um = ... String predicate1 = ... String predicate2 = ... String query = "//Element1[" + predicate1 + " and " + predicate2 + "]"; String result = new XQuery(query).execute(context); if (result != null && !result.isEmpty()) { ArrayList<Element1> elements = new ArrayList<>(); int index = -1; int beginIndex = 0; while ((index = result.indexOf(CLOSING_TAG, beginIndex)) != -1) { int endIndex = index + CLOSING_TAG.length(); String element1 = result.substring(beginIndex, endIndex); beginIndex = endIndex + 1; elements.add(((Element1) um.unmarshal(new ByteArrayInputStream(element1.getBytes())))); } // do something with the elements } But when I got into larger data sets (my DB collection is currently approx. 1GB total size and has just over 20k documents) this started to fail apparently due to trying to convert the entire result to a string at one time (out of memory error, despite setting -Xmx16384m). So I dig through the examples to find a better way and changed my code to this: ByteArrayOutputStream baos = new ByteArrayOutputStream(); Iter iter = null; Serializer ser = null; QueryProcessor proc = new QueryProcessor(query, context); iter = proc.iter(); ser = proc.getSerializer(baos); proc.close(); if (iter != null && ser != null) { ArrayList<Element1> elements = new ArrayList<>(); for(Item item; (item = iter.next()) != null;) { baos.reset(); ser.serialize(item); elements.add(((Element1) um.unmarshal(new ByteArrayInputStream(baos.toByteArray())))); } ser.close(); // do something with the elements } This appears to work fine but I am just wondering if there is a better/faster way to do it? At first glance, serializing to a ByteArrayOutputSream only to then turn around and use a ByteArrayInputStream to unmarshal with JAXB seems wasteful. Thanks for taking the time to read, Zach

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BaseX Design
by Vaibhav Khare 07 Jun '14

07 Jun '14

Hi, I have a requirement to build XML repository where I will store millions of XML documents (size may vary) based on some unique Ids (one level path like - \10). For another operation, I need to compare the incoming XML document with the stored XML document for any changes. 1. Can any of you please let me know on how to implement this in BaseX? Apart from inserting the XMLs and comparing them with the incoming XML, there is no other query required. 2. Performance is the major criteria for this. Do you think BaseX will be able to handle this as the repository size grows? Also, is there a way to do batch processing of the above operations to improve performance? Thanks in advance, ~ VK

2 1

Wie ich meinen Tinnitus kuriert habe
by Jessica Neustadt 06 Jun '14

06 Jun '14

To stop receiving these emails:http://mail0.tinnitusdoktor.me/unsubscribe.php?M=76094&C=08a2923af15af1ad713ec0788079def3&L=1&N=2 Hallo, Falls Sie oder jemand Ihrer Lieben an Tinnitus leidet, dann ist dies das wichtigste Schreiben, das Sie jemals gelesen werde. Wissen Sie, was die Ursachen für Tinnitus sind? Dieser GRATIS-Artikel wird Sie darüber aufklären: http://www.tinnitusdoktor.me Wachen Sie manchmal mitten in der Nacht auf und hören komische Geräusche? Ja, das kann wirklich angsteinflößend sein, vor allem, wenn Sie nicht wissen, wo diese Geräusche herkommen. Klicken Sie hier, um den Artikel zu lesen und herauszufinden, wie Sie Tinnitus kurieren können: http://www.tinnitusdoktor.me Mit freundlichen Grüßen, Christine Weiss

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BaseX 7.8.2: The Spring Edition
by Christian Grün 06 Jun '14

06 Jun '14

Dear subscribers, today we are please to provide you with BaseX 7.8.2, the Spring Edition! This is what you can expect (find more details in our changelog): * GUI Editor: Efficiently sort large texts (Ctrl-U) * Storage, Updates: Faster processing of documents with namespaces * Database Module: alter, copy, create-backup, drop-backup, restore * Admin Module: new merge option, existing functions revised * XQuery Module: new evaluation options (memory, timeout, permissions) * XQuery: always show full stack trace (enforce it with INLINELIMIT=0) * XQuery Ester egg: calculating partial sums (little Gauss) * Client/Server architecture: reduce waiting time if password is wrong We invite you to get the latest version via http://basex.org, and we are interested in your feedback, Christian BaseX Team

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mainmem bug?
by Marc 04 Jun '14

04 Jun '14

Hi, I try to use the mainmem flag because I use a temporally base to do some specific treatments and extract it after. But when I create the database it isn't! the easy script : --------------------- set mainmem true create db test list open test ------------------- the result : ------------------ MAINMEM: true Database 'test' created in 0.08 ms. name Resources Size Input Path --------------------------------------------------- baseCo 2 3742851 FichiersBase 5958 5357259729 FichiersBaseTest 5958 5205620197 3 database(s). Database 'test' was not found. -------------------- the infos : -------------- General Information: Version: 7.8 Used Memory: 1994 KB The main memory database doesn't exist anymore? Marc

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