cubicweb/misc/cwfs/cwfs-spec.txt
author Laurent Wouters <lwouters@cenotelie.fr>
Fri, 20 Mar 2020 14:34:07 +0100
changeset 12931 6eae252361e5
parent 12792 e2cdb1be6bd9
permissions -rw-r--r--
[rql] Store selected variables for RQL select queries in ResultSet (#17218476) By storing the name of the selected variables for RQL select queries in the ResultSet (within the "variables" attribute), the information can be passed down to specific protocols, e.g. rqlio that may wish to pass is down further to clients. In turn, clients can then choose to present the results of RQL select queries as symbolic bindings using the names used in the query's projection, instead of ordinal arrays.
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=======================
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 Specification cubicwebfs
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=======================
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Remarque: cubicwebfs c'est le siamois de yamsfs
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en fait c'est un yamsfs avec une interrogation
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de base RQL
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Modèle
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-------
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Description du modèle;
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::
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  societe
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  nom
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  ville
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  affaire
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  ref
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  document
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  annee
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  mois
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  jour
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  type {RAP,CLI,OFR,FCT}
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  fichier
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document concerne affaire
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affaire concerne societe
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Contenu de la base exemple
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---------------------------
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societe  | nom     | ville    |
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         | CETIAD  | Dijon    |
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         | EDF R&D | Clamart  |
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         | Logilab | Paris    |
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affaire  | ref    | concerne  |
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         | CTIA01 | CETIAD    |
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         | EDFR01 | EDF R&D   |
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         | EDFR02 | EDF R&D   |
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document | annee | mois | jour | type | concerne | fichier                                     |
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         | 2004  | 09   | 06   | PRE  | CTIA01   | depodoc/2004/09/CTIA01-040906-PRE-1-01.pdf  |
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         | 2005  | 02   | 01   | CLI  | EDFR01   | depodoc/2005/02/EDFR01-050201-CLI-1-01.pdf  |
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         | 2005  | 03   | 22   | OFR  | EDFR01   | depodoc/2005/02/EDFR01-050322-OFR-1-01.pdf  |
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Exemples de chemins/recherches
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-------------------------------
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Cherche documents de mars 2005;
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::
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  /document/annee/2005/mois/03/
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Dont le contenu successif serait;
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Test::
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  $ ls /document
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  annee/	mois/		jour/		type/
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  affaire/	concerne/	CTIA01-040906-PRE-1-01.pdf
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  EDFR01-050201-CLI-1-01.pdf	EDFR01-050322-OFR-1-01.pdf
0
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  $ ls /document/annee/
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  2004/		2005/
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  $ ls /document/annee/2005/
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  mois/		jour/		type/		affaire/
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  concerne/	EDFR01-050201-CLI-1-01.pdf	EDFR01-050322-OFR-1-01.pdf
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  $ ls /document/annee/2005/mois/
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  02/		03/
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  $ ls /document/annee/2005/mois/03/
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  jour/		type/		affaire/	concerne/
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  EDFR01-050322-OFR-1-01.pdf
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Question: est-ce que fichier/ ne va pas nous manquer ?
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Cherche documents relatifs à CTIA01;
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::
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  /affaire/ref/CTIA01/document/
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Dont le contenu des répertoires successifs serait:
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Test::
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  $ ls /affaire/
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  ref/		societe/	concerne/	document/
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  concerne_par/	CTIA01		EDFR01		EDFR02
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  $ ls /affaire/ref/
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  CTIA01/	EDFR01/		EDFR02/
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  $ ls /affaire/ref/CTIA01/
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  societe/	concerne/	document/	concerne_par/
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0
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  $ ls /affaire/ref/CTIA01/document/
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  annee/	mois/		jour/		type/
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  CTIA01-040906-PRE-1-01.pdf
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Cherche documents des affaires qui concernent CETIAD;
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::
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  /societe/nom/CETIAD/affaire/document/
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Dont le contenu des répertoires successifs serait;
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Test::
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  $ ls /societe/
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  nom/		ville/		affaire/	concerne_par/
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  CETIAD	EDF R&D		Logilab
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  $ ls /societe/nom/
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  CETIAD	EDF R&D		Logilab
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  $ ls /societe/nom/CETIAD/
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  ville/	affaire/	concerne_par/	CETIAD		Logilab
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  $ ls /societe/nom/CETIAD/affaire/
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  ref/		societe/	concerne/	document/
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  concerne_par/	CTIA01
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  $ ls /societe/nom/CETIAD/affaire/document/
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  annee/	mois/		jour/		type/
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  affaire/	concerne/	CTIA01-040906-PRE-1-01.pdf
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En particulier, pour la recherche ci-dessus on ne peut pas écrire;
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::
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  /document/affaire/concerne/societe/CETIAD/
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La logique est que si on est dans un répertoire document, il faut
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qu'il contienne des documents.
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12792
e2cdb1be6bd9 [doc8] D002 Trailing whitespace
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Cherche documents de 2002 qui concernent des affaires
0
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qui concernent CETIAD;
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::
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  /societe/CETIAD/affaire/document/annee/2002/
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Question: est-ce que les relations doivent être des composants
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du chemin ?
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Question : si les relations ne font pas partie du chemin, il faudrait
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pouvoir faire des recherches en utilisant des relations anonymes (ce
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qui est impossible en RQL par exemple);
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::
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  /document/affaire/... s'il existe plusieurs relations entre
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  les entités document et affaire, on ne peut pas s'en sortir
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Question: que va-t-il se passer pour des chemins du type;
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::
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  /affaire/CTIA*/document/
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Nicolas: à mon avis on a rien à faire, car c'est le shell qui
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s'en occupe. De la même façon, le système de fichier n'a pas
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à se préoccuper de ~/ et les programmes reçoivent pas le "qqch*"
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en argument, mais directement la liste.
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Attention: si jamais l'arborescence est sans fond, les
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commandes récursives vont prendre du temps...
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Attention: dans un premier temps, un système de fichiers en
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lecture seule est satisfaisant. on verra ensuite pour l'édition.
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pour l'édition, on peut s'inspirer du external editor de zope
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et avoir un format d'échange XML entre le serveur et l'éditeur.
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Le cas suivant est débile, faut-il l'interdire ?
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::
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  /document/affaire/societe/concerne_par/affaire/concerne_par/document
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NB: manque détail d'un cas comme /document/annee/2005/concerne/affaire/
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