BaseX-Talk

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7 participants
5251 discussions

Round tripping JSON
by Marc van Grootel 04 Aug '15

04 Aug '15

Hi, I am working on some REST API code and I'm struggling with POSTing of JSON. What I want to achieve is to have the function receive an XDM map (from JSON using fn:parse-json). I also want to output from such a map (in effect roundtripping some JSON). The test POST body I'm using is: {"foo": "bar"} When reading the docs I'm led to believe that this should achieve it: declare %rest:POST("{$body}") %rest:path("/json") %rest:consumes("application/json;lax=yes;format=map") %rest:produces("application/json;format=map") function api:json($body) { $body }; No matter what I do I always get this as response: <json type="object"> <foo>bar</foo> </json> Somehow I cannot force the function to receive a map(*) as $body argument. When I wrap $body in a trace() I see that it gets XML and not a map(*). What am I missing? Or do I really have to go JSON > XML > map {....}? -- --Marc

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File permissions on .basex files
by Amanda Galtman 03 Aug '15

03 Aug '15

Hi, It seems that the commands and functions that operate on the .basex files, such as ADD and db:add(...), make the .basex files writable by the creator but not by anyone else. On the other hand, executing a query requires write permission for at least some of the .basex files, even if the query does not attempt to update the database. As a result, if I create a database and want anyone other than me to be able to use it (via the GUI, for example), I have to change permissions on the .basex files after creating the database. Apparently, I have to change the permissions again if I later update the database and rebuild the indexes. Do folks on this list have a slick way to keep the permissions as open as needed? I tried searching the list archive but didn't find anything that looked relevent. Would it be a reasonable enhancement request to make this a bit smoother? For example, an option could let you specify that the .basex files being created or modified should be writable by all. Alternatively or in addition, perhaps it is possible to stop requiring write permission for non-updating queries; I'm not familiar with the reason why write permission is needed. Thanks, Amanda

2 4

Slow query
by Menashè Eliezer 03 Aug '15

03 Aug '15

Hello, I wonder if the attached query can be optimised. I'm attaching all relevant information. Basex 7.9, Debian, powerful server. This is just an example. The queries will be built based on a compilation of a search form. So reordering the conditions for having smaller subset right from the begging isn't relevant. Any help would be appreciated. 40 seconds are not acceptable. -- With kind regards, Menashè

2 45

Applying indexes
by Menashè Eliezer 03 Aug '15

03 Aug '15

Hello, 1. In which cases the "applying index" phrase should I see in the query plan? I have an old query (the one I've sent here at 06/22/2015) where only for one condition I've seen "applying index", and even this one doesn't appear anymore using a newer (8.2.2) version of BaseX and a larger database. I do see the right properties of the db: Indexes Up-to-date: true TEXTINDEX: true ATTRINDEX: true 2. Only once a value which is mentioned in the query is found in the index, in case of "=" condition? 3. Always, in case of "<" or "<" condition, assuming the specific text/attribute has been indexed? 4. Everything I see as a reply to index:facets is indexed, right? -- With kind regards, Menashè

2 4

No debug info
by Menashè Eliezer 03 Aug '15

03 Aug '15

Hello, I don't know why I don't see anymore query log events like "admin OK QUERY" in the .logs folder. Not even when I use the -d flag. BaseX 8.2.2 -- With kind regards, Menashè

2 2

compiling and building basex-core with maven
by Rob Stapper 03 Aug '15

03 Aug '15

Hi Christian, I'm trying to compile and build the basex-core. All is going quit well except that one testrun is failing which results in not being able to build the basex-core. I started the process from within the basex-core-directory with the command: mvn -U clean install. After a zillion test almost as last the "org.basex.server.LockingTest" fails with the message: java.lang.AssertionError: Parallel execution expected at org.junit.Assert.fail<Assert.java:88> at org.junit.Assert.assertTrue<Assert.java:41> at org.junit.Assert.LockingTest.testQueries<LockingTest.java:125> at org.junit.Assert.LockingTest. LockingTest.<LockingTest.java:146> I'm running on a simple windows-system with windows vista home edition. No apache-serve running. Can you give me a hint to get the basex-core build? TIA. Rob PS. maven on Basex-test also give problems but basex-api and basex-examples works fine. --- Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. https://www.avast.com/antivirus

3 3

Returning REST Response From Updating Function
by Eliot Kimber 02 Aug '15

02 Aug '15

I'm trying to understand how to use db:output() in the context of a REST function that does a bunch of stuff that updates and then wants to return a result. I have my updating functions using db:output() to return XML elements that are log entries, which I have up to now then formatted as HTML for return by the Web app. However, there doesn't appear to be a way to get the stuff returned by db:output before it gets returned to the ultimate caller. Have I missed something? My REST-handling function is declared as %updating: declare %updating %rest:path("/repo/{$repo}/{$branch}/updateLinkManagementIndexes") Which I understand to be a requirement if the function itself calls any updating functions. I tried e.g.: let $result := f:myUpdatingFunction() return db:output(f:formatLogItems($result)) But that results in the "no updating functions" message on the variable assignment. Is there a way to do what I want? Thanks, Eliot ---- Eliot Kimber, Owner Contrext, LLC http://contrext.com

2 4

RESTXQ: Call a Page With A Parameter That Does not Persist in the URL
by Eliot Kimber 01 Aug '15

01 Aug '15

In the context of my RESTXQ Web service that uses web:redirect, when the process is done I want to return to the original page and on that page display a message indicating that the process succeeded or failed. My initial attempt was simply to redirect to the page and use a query parameter to convey the message. The REST handler then checks for the message and if present shows it in the generated page. The problem I'm running into is that the query parameter persists in the URL so if the user refreshes the page the message is still there, even though it's no longer relevant. There must be a way to do what I want but I'm not sure what it is. Based on my research I think I can do a form POST instead of a GET but that seems kind of heavy weight. Is there a simpler/better way to achieve this effect? I didn't see anything obvious in the RESTXQ docs. Thanks, Eliot ---- Eliot Kimber, Owner Contrext, LLC http://contrext.com

1 0

Unknown error - BXCE001
by Gabriel Tessarolli 30 Jul '15

30 Jul '15

Hi, I've been struggling with this error for quite a while now and still don't have a clue why it is raised. Caused by: javax.xml.xquery.XQException: BXCE001 - at net.xqj.basex.bin.b.<init>(Unknown Source) at net.xqj.basex.bin.a.a(Unknown Source) at net.xqj.basex.bin.d.a(Unknown Source) at net.xqj.basex.bin.E.a(Unknown Source) at net.xqj.basex.bin.H.executeQuery(Unknown Source) There is no text description for this. First I thought it was something related to memory, but now I don't think this is the reason. As you can see, I am using BaseX XQJ, and it is version 1.4. BaseX is 8.1. It seems that my application receives this exception a little bit (4 seconds) before server tries to send the response back. This is what I get from server side: 15:29:20.050 127.0.0.1:49514 admin REQUEST FULL[0] 5727205.52 ms 15:29:20.050 127.0.0.1:49514 admin ERROR Can't communicate with the server. 0.12 ms It is a complex query, and it takes a while to respond. Is there any place I can get a better description on this BXCE001 exception? I couldn't find any. Thank you in advance! Best Regards, Gabriel

2 2

question
by Rob Stapper 30 Jul '15

30 Jul '15

Hello, I must be overlooking something, so excuses in advance, but: How can I retrieve the datatype of a variable? TIA, Rob Stapper --- Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. https://www.avast.com/antivirus

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