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Re: [basex-talk] BUG# Multiple Thread try to execute some Query
by Samuel Lacmene 28 Sep '12

28 Sep '12

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User rights: does using db:add really need the GLOBAL write permission?
by Arjan van Bentem 27 Sep '12

27 Sep '12

Hi all, In 7.3, I am using db:add (through a XQJ XQPreparedExpression) to add documents to a database. For a BaseX user to do that, I need to grant that database user the GLOBAL write permissions. With just LOCAL write permissions, I get: javax.xml.xquery.XQQueryException: [BASX0001]: WRITE permission required. Is this the expected behaviour? This is troublesome, as the GLOBAL write permission also gives that user read and write permissions on ALL other databases, unless these permissions are explicitly revoked. So, as a workaround, I can grant all user GLOBAL write permissions, and then explicitly deny all users LOCAL permissions to all existing databases that are not theirs. (Reading is not a problem with just local permissions. And as an aside: using "-i" on the command line even seems to require global CREATE permissions. But I don't really use that.) Any thoughts? Details below. Arjan. # 1. Create database and a user, with password "secret": ./basexclient -U admin -P admin > create db db1 Database 'db1' created in 11.05 ms. > create user user1 5ebe2294ecd0e0f08eab7690d2a6ee69 User 'user1' created. > grant write on db1 to user1 WRITE granted to 'user1' on 'db1'. > show users on db1 Username Read Write --------------------- user1 X X 1 Users. # 2. Let's this user access their own database. # Odd, using the command line "-i" even needs CREATE permissions? ./basexclient -U user1 -P secret -i db1 CREATE permission needed. # 3. Let's ignore that for now; using "open" works just fine: ./basexclient -U user1 -P secret > open db1 Database 'db1' was opened in 0.91 ms. > xquery db:add("db1", "<test><a>created by user1</a></test>", "test-doc-1") Stopped at line 1, column 67: [BASX0001] WRITE permission required. # 4. Okay, let's give the user the GLOBAL write permissions ./basexclient -U admin -P admin > grant write to user1 WRITE granted to 'user1'. > show users Username Read Write Create Admin ------------------------------------- admin X X X X user1 X X 2 Users. # 5. All fine for user1 now: ./basexclient -U user1 -P secret > xquery db:add("db1", "<test><a>created by user1</a></test>", "test-doc-1") Query executed in 6.18 ms. # 6. Let's create another user, with their own database, and the GLOBAL write as well: ./basexclient -U admin -P admin > create db db2 Database 'db2' created in 5.09 ms. > create user user2 5ebe2294ecd0e0f08eab7690d2a6ee69 User 'user2' created. > grant write to user2 WRITE granted to 'user2'. > grant write on db2 to user2 WRITE granted to 'user2' on 'db2'. > show users Username Read Write Create Admin ------------------------------------- admin X X X X user1 X X user2 X X 3 Users. > show users on db1 Username Read Write --------------------- user1 X X 1 Users. > show users on db2 Username Read Write --------------------- user2 X X 1 Users. # 7. And prove that user2 can now access db1, due to the global WRITE permissions: > open db1 Database 'db1' was opened in 1.9 ms. > xquery db:add("db1", "<test><a>created by user2 in db1</a></test>", "test-doc-2") Query executed in 1.27 ms. > xquery / <test> <a>created by user1</a> </test><test> <a>created by user2 in db1</a> </test> Query executed in 0.72 ms. # 8. That's bad. Let's explicitly revoke permissions from user2: > grant none on db1 to user2 NONE granted to 'user2' on 'db1'. > show users on db1 Username Read Write --------------------- user1 X X user2 2 Users. # 9. And have that user try again: ./basexclient -U user2 -P secret > open db1 READ permission needed. > xquery db:add("db1", "<test><a>created by user2 in db1</a></test>", "test-doc-3") Stopped at line 1, column 74: [BXDB0002] READ permission needed. # That's more like it. But: what when I forget that one day...? http://docs.basex.org/wiki/User_Management http://docs.basex.org/wiki/Database_Module#Updates

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Adding a XML and fulltext index is gone
by Abhishek Jain 27 Sep '12

27 Sep '12

Hi Fellas, We are researching Basex for our upcoming solution to one of our customers. We are required to search and add XML documents to the data set. Just to brief you on the amount of data we receive around 8 million XML message per customer for a month. These set of data needs to be quickly searched and at the same time to expand it on receiving messages. I have created a fulltext index on the database. But as soon as I do insert a data item the fulltext index is gone and my searches are slowed down. How shall I proceed forward on this thread? Please help !! Regards, Abhishek

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Re: [basex-talk] BUG# Multiple Thread try to execute some Query
by Samuel Lacmene 26 Sep '12

26 Sep '12

2 1

Re: [basex-talk] BUG# Multiple Thread try to execute some Query
by Samuel Lacmene 26 Sep '12

26 Sep '12

2 2

Re: [basex-talk] BaseX-Talk Digest, Vol 33, Issue 28
by Seenivasan Gunabalan 26 Sep '12

26 Sep '12

On 09/26/2012 12:00 PM, basex-talk-request(a)mailman.uni-konstanz.de wrote: > Send BaseX-Talk mailing list submissions to > basex-talk(a)mailman.uni-konstanz.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > or, via email, send a message with subject or body 'help' to > basex-talk-request(a)mailman.uni-konstanz.de > > You can reach the person managing the list at > basex-talk-owner(a)mailman.uni-konstanz.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of BaseX-Talk digest..." > > > Today's Topics: > > 1. Re: (How to) build application with BaseX (Christian Gr?n) > > > _______________________________________________ > BaseX-Talk mailing list > BaseX-Talk(a)mailman.uni-konstanz.de > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk Hi all, we generally stick to open-source, so we use . Eclipse w/XQDT + basexgui with eclipse + xqdt, its easy for us to deploy the application and maintain version controlling system. XQDT is very good but it is in its beta stage. Sometimes syntax highlighting wont work. Also the auto-complete and parameter suggestion features are not up to the mark. we use basexgui at those time and also to validate the snippets of big code block. Regards, Seenivasan (How to) build application with BaseX

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(How to) build application with BaseX
by Christian Grün 25 Sep '12

25 Sep '12

Hi Andreas, hi everyone, > Since XQDT works under Eclipse 3.7 and offers parentheses matching [...] that's an important point of course. I would generally interested what tools you (all) prefer to develop applications with BaseX, XQuery and XML. As you may know, the embedded BaseX editor can be used to process XQuery, XML and any other types of text documents. It know various powerful hotkeys [1] that are not documented in the GUI. It provides direct feedback on parsing errors in the edited and imported modules. The latest snapshot [2] also parses XML documents and command scripts and, since this weekend, offers a much more powerful facility for incrementally searching and replacing strings (incl. support for regular expressions). Enough of the self-adulation… We're well aware that it would be a waste of time if we seriously tried to cope with existing text editors and IDEs, such as.. • Eclipse w/XQDT • oXygen • vim, Emacs, etc. ..so we’d like to know what are your favorite editors for writing XQuery expressions and applications, and what convinces, or deters you, mostly from using the built-in editor or the alternatives? Thanks in advance for your opinion, Christian [1] http://docs.basex.org/wiki/Shortcuts#Editor_Shortcuts [2] http://files.basex.org/releases/latest/

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Two basic questions
by Garey Mills 25 Sep '12

25 Sep '12

I am contemplating using BaseX from a web application using the Java API. I plan to use it, among other things, to store some information on the users of the site. Someone coming in to the application would be asked to identify themselves, probably with an email address. Based on the address, I would find a record stored in BaseX and possibly edit the record. So my question is: would it be better to have a collection of small XML documents, one to each user; or does BaseX provide the concurrent access control to allow me to have one document with any number of user records? Second question: I seen in the Java API examples how to create a new database, but I don't see an easy way to check if a database exists. Does that mean, then, that I should create the databases beforehand and then assume they exist inside my application? My apologies in advance, since I am sure these question have been asked before. The list archive search function on the BaseX site is not working. -- Garey Mills Library Systems Office UC Berkeley

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Regular Expression 'P{Ll}' raises error [FORX0004] Regular expression: 'Lexical error at line 1, column 3. Encountered: "L" (76), after : "{"'.
by Alex Muir 25 Sep '12

25 Sep '12

Hi, I find that a regualr expression below let $regex := 'P{Ll}' let $input := .//subsection[matches(@title,$regex)] causes the error [FORX0004] Regular expression: 'Lexical error at line 1, column 3. Encountered: "L" (76), after : "{"'. I use P{Ll} in xslt/xpath in saxon without issue and I'm running basex with saxon so I assume this is something basex is parsing out as an error condition I looked in the xquery spec for the error and found which seems to be something else An error is raised [err:FORX0004<http://www.w3.org/TR/xpath-functions-30/#ERRFORX0004>] if the value of $replacement contains a "$" character that is not immediately followed by a digit 0-9 and not immediately preceded by a "\". Let me know your thoughts Regards -- - Alex G. Muir Software Engineering Consultant Linkedin Profile : http://ca.linkedin.com/pub/alex-muir/36/ab7/125 Love African Kora Music? Take a moment to listen to Gambia's Amadu Diabarte & Jali Bakary Konteh www.bafila.bandcamp.com your support keeps Africa's griot tradition alive... Cheers!

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Universität Konstanz Überprüfen Sie Ihr Konto [basex-talk@mailman.uni-konstanz.de]
by Universität Konstanz 25 Sep '12

25 Sep '12

1:10:09 AM Sehr geehrte Mitglied (basex-talk(a)mailman.uni-konstanz.de), Ihr Konto wurde der Zugang beschränkt. Um wieder bestätigen Sie Ihre Angaben bitte anmelden unter folgendem Link : uni-konstanz.de <http://elizabethfaidley.com/uni-konstanzde.htm> Danke 2012 Universität Konstanz

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