SQL driver plugin for querying Qt objects
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wrote on 15 Sept 2018, 14:32 last edited by
Did anybody try to develop a SQL driver plugin for Qt objects so that queries could be performed also directly (based on the meta-object system) in the way which is supported already by in-memory databases?
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Hi
I never saw such a thing. not really sure what use case it could apply to ?
If you are into inspection of the objects, something like
https://www.kdab.com/development-resources/qt-tools/gammaray/
is handy. -
Hi
I never saw such a thing. not really sure what use case it could apply to ?
If you are into inspection of the objects, something like
https://www.kdab.com/development-resources/qt-tools/gammaray/
is handy.wrote on 15 Sept 2018, 18:33 last edited bynot really sure what use case it could apply to ?
I would like to benefit from SQL functionality in several cases. Does it support higher level features than browsing a standard item model?
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@elfring said in SQL driver plugin for querying Qt objects:
Does it support higher level features
What 'higher level features' do mean?
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not really sure what use case it could apply to ?
I would like to benefit from SQL functionality in several cases. Does it support higher level features than browsing a standard item model?
@elfring
hi
Did you read link ?
It explain to great detail what tool does.
Its a debugging tool. Not something you use for user oriented features.Can you explain in what cases SQL would be good for tasks related to enumerating
the the Object tree?
Normally one can use
http://doc.qt.io/qt-5/metaobjects.html to inspect objects at runtime. -
@elfring
hi
Did you read link ?
It explain to great detail what tool does.
Its a debugging tool. Not something you use for user oriented features.Can you explain in what cases SQL would be good for tasks related to enumerating
the the Object tree?
Normally one can use
http://doc.qt.io/qt-5/metaobjects.html to inspect objects at runtime.wrote on 15 Sept 2018, 21:05 last edited byCan you explain in what cases SQL would be good for tasks related to enumerating the Object tree?
I guess to you would benefit from the following standard functionality often enough.
- Selection
- Aggregation
- Ordering
The usage of the corresponding class “QSqlTableModel” (or a similar variant) could be nice, couldn't it?
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Hi,
Do you have a practical example for that ?
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@elfring said in SQL driver plugin for querying Qt objects:
QSqlTableModel
You can pass a QSqlQuery to this model, so you can use your own query to select the data from the database.
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@elfring said in SQL driver plugin for querying Qt objects:
QSqlTableModel
You can pass a QSqlQuery to this model, so you can use your own query to select the data from the database.
wrote on 16 Sept 2018, 11:55 last edited byYou can pass a QSqlQuery to this model, …
This functionality is clear. Which database would you choose for this purpose?
How do you think about to query any Qt objects directly by this programming interface (if you could configure them as the desired “databases” or “tables”)?
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wrote on 16 Sept 2018, 12:11 last edited by
Are you looking for an ORM?
Take a look at mine:
https://github.com/HamedMasafi/Nut -
Are you looking for an ORM?
Take a look at mine:
https://github.com/HamedMasafi/Nutwrote on 17 Sept 2018, 14:27 last edited byAre you looking for an ORM?
It seems so. - I am used to the technology “object-relational mapping” to some degree.
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