BaseX-Talk March 2017

basex-talk@mailman.uni-konstanz.de

32 participants
43 discussions

starting and closing HTTP server giving errors
by kalibuk＠centrum.cz 07 Mar '17

07 Mar '17

Hallo, I'm trying to get strating and stopping of BaseX HTTP server automated. Whats wrong with starting: Once trying to run in command line "basexhttp.bat -S" I get "Connection failed (port: 8984)." But server is running (!?) and I can create socket to comunicate with. Whats wrong with stopping: Once trying to run in command line "basexhttpstop.bat" I get it hanged and need to terminate job or on another attempt I get back "Connection failed (port: 8985)." And I cannot communicate with server so it seems that it really got stopped. It's tricky to automate that if I get errors on every attempt to start/stop it. Could you advice? Third error what I ocasionally can get back after trying to run server is: "Error occurred during initialization of VM Could not reserve enough space for 1433600KB object heap" Behaviour is same for 8.6.0 and 8.6.1. I have just updated Java RT to latest. Regards, Jan, Brno

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Java bindings
by meumapple 06 Mar '17

06 Mar '17

Hi, I have a java parser (opennlp-tools-1.7.2.jar) whose main class is "opennlp.tools.cmdline.CLI" At the command line I run it with opennlp POSTagger mymodel.bin (opennlp is a bash script running the abovementioned jar file). After that I am asked interactively for the text to parse. Is it possible to invoke the command from XQuery via java bindings? I have put the opennlp jar files in the repo folder and I have tried "import module namespace m = "java.opennlp.tools.cmdline.CLI;" but the I get the "module not found error" Thanks! Joseph

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Re: [basex-talk] HTTP status codes
by Marco Lettere 06 Mar '17

06 Mar '17

Hi Christoph, it worked for me when putting the rest_errors.xqm in the webapp folder and rewrriting your import in this way: import module namespace err="error" at "rest_errors.xqm"; > curl -v http://localhost:9984/softwareberatung/rev/2017/12 Trying 127.0.0.1... * Connected to localhost (127.0.0.1) port 9984 (#0) > GET /softwareberatung/rev/2017/12 HTTP/1.1 > Host: localhost:9984 > User-Agent: curl/7.47.0 > Accept: */* > < HTTP/1.1 404 Not Found < Set-Cookie: JSESSIONID=6ylp1ounz561183u198394hjs;Path=/ < Expires: Thu, 01 Jan 1970 00:00:00 GMT < Content-Type: text/plain;charset=UTF-8 < Content-Length: 25 < Server: Jetty(8.1.18.v20150929) < * Connection #0 to host localhost left intact Revenue 12 does not exist Working with the repo is something that I never got right but probably I should just carefully re-read the docs at [1]. Regards, Marco. [1] http://docs.basex.org/wiki/Repository On 05/03/2017 13:45, Christoph Gaukel wrote: > Hi Marco, > > thank you for your reply. It works fine, when I put the declaration > direct into my rest-module: > > module namespace page = 'rev'; > > declare > %rest:error("*:notfound") > %rest:error-param("description", "{$description}") > function page:not-found-error($description as xs:string) > { > <rest:response> > <http:response status="404"> > <http:header name="Content-type" value="text/plain"/> > </http:response> > </rest:response>, $description > }; > > declare > %rest:path("softwareberatung/rev/{$year}/{$id}") > %rest:GET > %output:method("json") > function page:get-revenue( > $year, > $id > ) { > error(xs:QName('err:notfound'), 'Revenue ' || $id || ' does not exist') > }; > > but not if I put this code into module rest_errors.xqm: > > module namespace err = "error"; > declare namespace rest = "http://exquery.org/ns/restxq"; > declare namespace http = "http://expath.org/ns/http-client"; > > declare > %rest:error("*:notfound") > %rest:error-param("description", "{$description}") > function err:not-found-error($description as xs:string) > { > <rest:response> > <http:response status="404"> > <http:header name="Content-type" value="text/plain"/> > </http:response> > </rest:response>, $description > }; > > > and import the module: > > module namespace page = 'rev'; > import module namespace err="error" > at "../repo/rest_errors.xqm"; > > declare > %rest:path("softwareberatung/rev/{$year}/{$id}") > %rest:GET > %output:method("json") > function page:get-revenue( > $year, > $id > ) { > error(xs:QName('err:notfound'), 'Revenue ' || $id || ' does not exist') > }; > > > This returns status code 400 instead of 404! > > Regards > > Christoph > > > > Am 05.03.2017 um 12:31 schrieb Marco Lettere: >> Hi Chrostoph, >> the best way I've found out to organize error responses in a RestXQ >> context is to exploit BaseX built-in error interceptors. [1] >> What we usually do is write a module with interceptors (basically >> annotated functions ) like the following: >> >> module namespace e = "urn:myerr"; >> >> declare >> %rest:error("*:notfound") >> %rest:error-param("description", "{$description}") >> function e:login-error($description as xs:string) >> { >> <rest:response> >> <http:response status="404"> >> <http:header name="Content-type" value="text/plain"/> >> </http:response> >> </rest:response>, $description >> >> }; >> >> Here we just use <rest:response> to hand-craft the response we need >> when an exception with the annotated code (*:notfound) is generated >> (and not catched before). >> In your case rewriting your throwing like the following would then be >> catched by the above interceptor. >> >> fn:error(xs:QName('err:notfound'), 'Invoice ' || $id || ' does not >> exist'). >> >> You can intercept with the proper annotations all information you >> usually have in an exception handler (line number, value, stack >> trace, ...) and this can be exploited, for example, in order to make >> the status of the response dynamic. You could pass it into the error >> interceptor with the value field for instance. >> >> Hope you can move ahead with this info. >> Regards, >> Marco. >> >> [1] http://docs.basex.org/wiki/RESTXQ#Error_Handling >> >> >> On 05/03/2017 07:33, Christoph Gaukel wrote: >>> Hi, >>> >>> i tried to return http-status 404, but my service returns status 400: >>> >>> This is the code in my XQuery: >>> >>> fn:error(xs:QName('error'), 'Invoice ' || $id || ' does not exist', >>> 404) >>> >>> >>> This is what curl prints: >>> >>> * Trying 127.0.0.1... >>> * Connected to localhost (127.0.0.1) port 8984 (#0) >>> > GET /softwareberatung/revenues/2015/15-123 HTTP/1.1 >>> > Host: localhost:8984 >>> > User-Agent: curl/7.47.0 >>> > Accept: */* >>> > >>> < HTTP/1.1 400 Bad Request >>> < Set-Cookie: JSESSIONID=cfedc7x61od51p8o40uxm8dfe;Path=/ >>> < Expires: Thu, 01 Jan 1970 00:00:00 GMT >>> < Content-Type: text/plain;charset=UTF-8 >>> < Content-Length: 97 >>> < Server: Jetty(8.1.18.v20150929) >>> < >>> Stopped at /home/christoph/basex/restxq/Revenue.xqm, 64/19: >>> * Connection #0 to host localhost left intact >>> [error] Invoice 15-123 does not exist >>> >>> >>> Regards >>> >>> Christoph Gaukel >>> >>> >> >> >

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preserve auth behavior like older basex versions
by Erik Peterson 05 Mar '17

05 Mar '17

For RESTXQ auth its unclear to me what the entry is to preserve older versions of basex auth. Thank! see... http://docs.basex.org/wiki/Web_Application - Authentication was readded to RESTXQ. As a consequence, you need to specify the admin user in your web.xml file if you want to preserve the behavior of older versions of BaseX. - In turn, if users are defined in the web.xml file, no passwords must be specified anymore. - The server-side authentication method, and default users, are now enforced and cannot be overwritten by client.

2 1

HTTP status codes
by Christoph Gaukel 05 Mar '17

05 Mar '17

Hi, i tried to return http-status 404, but my service returns status 400: This is the code in my XQuery: fn:error(xs:QName('error'), 'Invoice ' || $id || ' does not exist', 404) This is what curl prints: * Trying 127.0.0.1... * Connected to localhost (127.0.0.1) port 8984 (#0) > GET /softwareberatung/revenues/2015/15-123 HTTP/1.1 > Host: localhost:8984 > User-Agent: curl/7.47.0 > Accept: */* > < HTTP/1.1 400 Bad Request < Set-Cookie: JSESSIONID=cfedc7x61od51p8o40uxm8dfe;Path=/ < Expires: Thu, 01 Jan 1970 00:00:00 GMT < Content-Type: text/plain;charset=UTF-8 < Content-Length: 97 < Server: Jetty(8.1.18.v20150929) < Stopped at /home/christoph/basex/restxq/Revenue.xqm, 64/19: * Connection #0 to host localhost left intact [error] Invoice 15-123 does not exist Regards Christoph Gaukel

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following:: axis
by meumapple 03 Mar '17

03 Mar '17

Hi, In a file with a structure like <l> <d> <f>a</f> <f>b</f> <f>c</f> </d> <d> <f>a</f> <f>b</f> <f>c</f> </d> </l> If I type doc($b)//f[1]/following::f the processor gets out of main memory, even though the file is about 2.2MB and the structure is simply the one showed above (many sibling d elements) Any idea why? Thanks Joseph

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[DBA] jobs-users/server-sessions
by Fabrice ETANCHAUD 03 Mar '17

03 Mar '17

Dear all @BaseX, Could you please explain the exact meaning of the server sessions table in the dba jobs-users window ? I expected to find a list of (servlet) sessions, but instead one can see all the session variables (and among them the session ids). Is it expected behavior ? In that case what does it mean to 'kill' a session variable ? Thank you for showing session ids in the log ! Best regards, Fabrice Etanchaud Groupe FBO

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Re: [basex-talk] basexhttpstop hangs in 8.6.1
by Christian Grün 02 Mar '17

02 Mar '17

Hi Tim, The problem has been fixed with the latest snapshot (thanks to Marco for providing me with more details). Have fun everyone, Christian Am 28.02.2017 1:04 nachm. schrieb "Tim Thompson" <timathom(a)gmail.com>: I've also noticed similar behavior in version 8.6 on Ubuntu 14.04. If I start the server in one terminal window and then run the stop script in a separate window, the server does stop, but the basexhttpstop script keeps hanging. -- Tim A. Thompson Metadata Librarian (Spanish/Portuguese Specialty) Princeton University Library www.linkedin.com/in/timathompson tat2(a)princeton.edu On Tue, Feb 28, 2017 at 6:22 AM, Marco Lettere <m.lettere(a)gmail.com> wrote: > No Christian, really nothing special. Everything used to work neatly until > Saturday when we tried 8.6.1 by just unzipping and launching. Btw we use > Java 1.8.0_121 on both win7 and Ubuntu 16.04. > Latest news same happens on Mac Sierra with Java 1.8.0_121. > We've seen that there have been some commits recently on that parte of the > code but I don't have a connection in my PC now ti check it in depth. Sorry. > Ciao, > Marco. > > Il 28 feb 2017 10:49 AM, "Christian Grün" <christian.gruen(a)gmail.com> ha > scritto: > >> Hi Marco, >> >> Hm, so it seems that the file is not deleted by the shutdown process. >> I cannot reproduce this with the zip distribution on both Window 10 >> and Ubuntu; have you changed anything in the configuration files? >> >> Christian >> >> >> >> On Tue, Feb 28, 2017 at 9:38 AM, Marco Lettere <m.lettere(a)gmail.com> >> wrote: >> > Hi Christian, >> > -d doesn't add much info. >> > But we've found out that the shutdown script hangs on a file >> BasexHTTP8985 >> > in the tmp directory. This happens btw on Windows 7 too. >> > If we delete the file, while basexhttpstop is blocked, then >> basexhttpstop >> > ends immediately and correctly. If we ctrl-c basexhttpstop then at the >> next >> > shutdown we get a FileAlreadyExists exception. >> > >> > Thanks for tour support. >> > Marco. >> > >> > Il 28 feb 2017 12:05 AM, "Christian Grün" <christian.gruen(a)gmail.com> >> ha >> > scritto: >> >> >> >> Hi Marco, >> >> >> >> Could you please report back to us what exactly is output on the two >> >> shells? Ideally, please run both commands with the -d flag. >> >> >> >> Thanks in advance, >> >> Christian >> >> >> >> PS: Does it work with 8.6, 8.5.3 or older versions? >> >> >> >> >> >> >> >> > I just downloaded Basex861.zip for Linux (Ubuntu 16.04 the host). >> >> > >> >> > Unizipped and started basexhttp. Everything ok. >> >> > >> >> > In another shell I launch basexhttpstop which correctly shuts down >> the >> >> > server started before. But basexhttpstop itself does not terminate. >> >> > >> >> > This is causing some headache in our scripts that launch and stop >> >> > several >> >> > instances. >> >> > >> >> > Any clue? >> >> > >> >> > Thanks a lot, >> >> > >> >> > Marco. >> >> > >> >

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[REST-XQ] cookies and path cookie
by Fabrice ETANCHAUD 02 Mar '17

02 Mar '17

Dear all (again ;)) As BaseX as a Web Application can serve several 'sub' applications, I ran into the following issue : 1- Logged in into the DBA interface 2- Session:close() in another rest-xq end point (in the same browser) 3- I got disconnected from the DBA interface It seems normal behavior because cookie is shared among all basex applications in the same Web Application (path cookie is the same for all sub applications). I cannot figure out how we could easily have private cookies for each 'sub-application' ? Best regards, Fabrice Etanchaud

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basexhttpstop hangs in 8.6.1
by Marco Lettere 02 Mar '17

02 Mar '17

Hello all, I just downloaded Basex861.zip for Linux (Ubuntu 16.04 the host). Unizipped and started basexhttp. Everything ok. In another shell I launch basexhttpstop which correctly shuts down the server started before. But basexhttpstop itself does not terminate. This is causing some headache in our scripts that launch and stop several instances. Any clue? Thanks a lot, Marco.

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BaseX-Talk March 2017