Hi,
I used an old version of BaseX (7.0 I think) and made HTTP GET requests to application/xquery ressources in the database which evaluated them before returning the result of the evaluation. That way I could used predefined XQuery queries stored in the database. The following sentence is written in the documentation at http://docs.basex.org/wiki/REST#Operations : "If a resource with content type application/xquery is addressed, it will be evaluated first, and the result will be returned." But it no more the case in 7.2 and instead I get the query verbatim, not the result of the evaluation.
Indeed, Googling around I even found a bug correction made by Christian Grün ( https://github.com/BaseXdb/basex-api/blob/146d594931abe0143766203a329d8f6823... ) to an old version of the code. We can see at lines 76 to 82 that an application/xquery ressource is evaluated first:
if(type.equals(MimeTypes.APP_XQUERY)) { // execute raw file as query final ArrayOutput ao = new ArrayOutput(); session.setOutputStream(ao); session.execute(new Retrieve(ctx.dbpath())); query(ao.toString(), ctx); }
Thus, I tried to find the same sort of code in the actual 7.2 version but could not. So I am wondering if this is a wanted omission, and thus the documentation is out of sync, or if it is an unwanted omission and needs to be corrected. The code I checked is at https://github.com/BaseXdb/basex-api/blob/master/src/main/java/org/basex/htt...
The workaround I used is to put my queries as files in the HTTPPATH directory found in the .basex file.
TIA for any clarification on that matter,
Ludovic Kuty
Dear Ludovic,
thanks for the in-depth investigation. It's true, we have removed the feature to evaluate queries inside databases. I've finally updated our documentation. There were two reasons why we removed this feature:
-- other modules, which were referenced from query files in database, could not be correctly imported -- we want to keep our REST API as RESTful as possible, and reduce side effects (due to the power of XQuery processing in BaseX, an XQuery expression within a database directory could also be used to modify other databases).
You already went for the best alternative: files can also be evaluated if they are located in the designated http directory. In the future, we'll add our "basex-web" service to the HTTP portfolio, which will further simplify evaluation of XQuery code via BaseX and web servers.
Hope this helps, Christian ___________________________
On Sun, Apr 22, 2012 at 8:47 PM, Ludovic Kuty mailing@kuty.be wrote:
Hi,
I used an old version of BaseX (7.0 I think) and made HTTP GET requests to application/xquery ressources in the database which evaluated them before returning the result of the evaluation. That way I could used predefined XQuery queries stored in the database. The following sentence is written in the documentation at http://docs.basex.org/wiki/REST#Operations%C2%A0: "If a resource with content type application/xquery is addressed, it will be evaluated first, and the result will be returned." But it no more the case in 7.2 and instead I get the query verbatim, not the result of the evaluation.
Indeed, Googling around I even found a bug correction made by Christian Grün ( https://github.com/BaseXdb/basex-api/blob/146d594931abe0143766203a329d8f6823...) to an old version of the code. We can see at lines 76 to 82 that an application/xquery ressource is evaluated first:
if(type.equals(MimeTypes.APP_XQUERY)) { // execute raw file as query final ArrayOutput ao = new ArrayOutput(); session.setOutputStream(ao); session.execute(new Retrieve(ctx.dbpath())); query(ao.toString(), ctx); }
Thus, I tried to find the same sort of code in the actual 7.2 version but could not. So I am wondering if this is a wanted omission, and thus the documentation is out of sync, or if it is an unwanted omission and needs to be corrected. The code I checked is at https://github.com/BaseXdb/basex-api/blob/master/src/main/java/org/basex/htt...
The workaround I used is to put my queries as files in the HTTPPATH directory found in the .basex file.
TIA for any clarification on that matter,
Ludovic Kuty
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