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| Ligne 1 : |
Ligne 1 : |
| − | {{#if:
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| − | {{#subobject:city1
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| − | | Has page = Athens
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city2
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| − | | Has page = Bangalore
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city3
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| − | | Has page = Beijing
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city4
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| − | | Has page = Berlin
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city5
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| − | | Has page = Gdańsk
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city6
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| − | | Has page = Katowice
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city7
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| − | | Has page = Kraków
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city8
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| − | | Has page = London
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city9
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| − | | Has page = Lublin
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| − | | Has text = Unique
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| − | }}
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| − |
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| − | {{#subobject:city101
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| − | | Has page = Athens
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| − | }}
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| − |
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| − | {{#subobject:city102
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| − | | Has page = Bangalore
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| − | }}
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| − |
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| − | {{#subobject:city103
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| − | | Has page = Beijing
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| − | }}
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| − |
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| − | {{#subobject:city104
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| − | | Has page = Berlin
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| − | }}
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| − |
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| − | {{#subobject:city105
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| − | | Has page = Gdańsk
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| − | }}
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| − |
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| − | {{#subobject:city106
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| − | | Has page = Katowice
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| − | }}
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| − |
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| − | {{#subobject:city107
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| − | | Has page = Kraków
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| − | }}
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| − |
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| − | {{#subobject:city108
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| − | | Has page = London
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| − | }}
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| − |
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| − | {{#subobject:city109
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| − | | Has page = Lublin
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| − | }}
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| − |
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| − | }}
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| − | == Reference ==
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| − | Issue [https://sandbox.semantic-mediawiki.org/wiki/Issue/4988 4988]
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| − |
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| − | == Description ==
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| − | Setting subobjects <code>cityN</code> with the property '''Has page''' to various cities and '''Has text''' to ''Unique''. Then, again "duplicating" the subobjects by creating <code>city10N</code> with the property '''Has page''' set to the same cities.
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| − |
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| − | Afterwards, querying for the subobjects and showing the cities and their area/population/location using property chains.
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| − |
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| − | In some cases, depending on how the parameters <code>sort</code> and <code>order</code> are used, the query does '''not''' return some property chain values from "duplicate" cities.
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| − |
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| − | == Property declaration ==
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| − | <pre>{{#subobject:city1
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| − | | Has page = Athens
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| − | | Has text = Unique
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| − | }}
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| − | ...
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| − | {{#subobject:city101
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| − | | Has page = Athens
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| − | }}
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| − | ...
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| − | </pre>
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| − |
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| − | == Query ==
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| − | === Query 1 ===
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | Here no sort is used, i.e. the results are sorted by their subobject name. The problem is that some of the property chain values are '''not''' displayed at all.
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]] [[Has page::Bangalore]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]] [[Has page::Bangalore]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | Querying for the city directly shows all property chain values.
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| − |
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| − | ==== Debug ====
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|format=debug}}
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| − |
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| − | === Query 1b ===
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]][[Has text::Unique]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]][[Has text::Unique]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in}}
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| − | Here querying for the "unique" subobject, i.e. no duplicate properties, everything is displayed properly.
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| − |
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| − | ==== Debug ====
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]][[Has text::Unique]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|format=debug}}
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| − |
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| − | === Query 2 ===
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page}}
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| − | Here <code>sort=Has page</code> is used, in contradiction to the previous query, all property values are displayed.
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| − | ==== Debug ====
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page|format=debug}}
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| − |
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| − | === Query 3 ===
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page|order=rand}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page|order=rand}}
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| − | Here <code>sort=Has page</code> and <code>order = rand</code> is used, again, some property values are missing.
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| − | ==== Debug ====
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page|format=debug}}
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| − |
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| − | === Query 4 ===
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| − | <pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|sort=Has page.Located in}}
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| − | </pre>
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page.Located in}}
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| − | Offtopic, here trying to use <code>sort=Has page.Located in</code>. While the property chain values are displayed correctly, the sorting doesn't work at all. Something else takes precedence, ruining the intended sort, turning it internally into <code>sort=<!-- subobject name -->,Has page.Located in</code>, <code>sort=Has page,Has page.Located in</code> or <code>sort=Has page</code>. Not sure about this, but something is fishy here. I know that up to SMW 3.1.6 the sort <code>sort = <property1>.<property2>,<property></code> is turned internally into <code>sort = <property>,<property1>.<property2></code>, ordering the property chains by length first; but here that it somehow ignores the second property chain part is very wierd.
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| − | ==== Debug ====
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| − | {{#ask: [[-Has subobject::Utilisateur:SMW user/Sandbox2]]|?Has page|?Has page.Has area|?Has page.Has population|?Has page.Located in|sort=Has page.Located in|format=debug}}
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