list allowed values for ldap protocol setting in help, so that the generated file includes this in a comment
.. -*- coding: utf-8 -*-
Déroulement de l'éxecution d'une requête en multi-source avec insertion de sécurité
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* 3 sources (system, ldap (Euser) et rql (Card)
* permission en lecture Card is elle appartient à l'utilisateur
Soit la requête de départ: ::
Any X,T WHERE X owned_by U, U login "syt", X title T
1. récupération arbre de syntaxe et solution (+cache) ::
-> {X: Card, U: Euser}, {X: Blog, U: Euser}, {X: Bookmark, U: Euser}
2. insertion sécurité ::
-> Any X,T WHERE X owned_by U, U login "syt", X title T, EXISTS(X owned_by UEID) / {X: Card, U: Euser}
Any X,T WHERE X owned_by U, U login "syt", X title T / {X: Blog, U: Euser}, {X: Bookmark, U: Euser}
3. construction plan
0. preprocessing (annotation des arbres de syntaxe)
1. Any U WHERE U login "syt" / {U: Euser}
[system+ldap] => table1/varmap1{U:U2}
2. Any X,T WHERE X owned_by U2, X title T / {X: Blog, U: Euser}, {X: Bookmark, U: Euser}
[varmap1|system] => TABLE2
3 Deux alernatives:
1. Any X,T WHERE X is Card, X title T {X: Card} ::
[system+rql] => table3/varmap3{X:X3, T:T3}
Any X3,T3 WHERE X3 owned_by U2, X3 title T3, EXISTS(X owned_by UEID) / {X3: Card, U2: Euser} ::
[(varmap1, varmap3)|system] => TABLE2
2 Any X WHERE X is Card X owned_by U2, EXISTS(X owned_by UEID) / {X: Card, U2: Euser} ::
[varmap1|system] => EIDS
Any X,T WHERE X title T, X eid IN(EIDS) {X: Card} ::
[system+rql] => TABLE2
4. renvoie contenu TABLE2.
Note : si aggrégat / tri / distinct TABLE2 est nécessairement une table temporaire et besoin d'une
étape AggrStep supplémentaire
4. éxécution du plan
5. [construction description]
6. renvoie ResultSet
Notes sur UNION
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* en multi-sources, les résultats des unions peuvent être mélangés