Comments (4)
I think this is a good approach. I'll carry on raising SQLite issues as I find them. We can close them in future.
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@irar2 as mentioned in #52 and this comment: link, I'll move extension discussions to this issue, so there is no multiple issues for the same feature.
In this commit i've implemented an initial implementation of Extensions
.
However, we are not sure your injection points are sufficient
Does injection points
mean Position
that is used by Extendable
protocol? It's designed to be query independent, so for every query the Position
should be different.
and also the use of priorities in case of several extensions at the same position worries us.
Doest it mean that there should be no multiple extensions on the same position or that usage of priorities could be error prone if not used correctly?
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Hi @naithar,
Yes, by injection points I meant Position, and in my opinion Position is not flexible enough, it defines 5 points (for Select), and we prefer something more universal.
We think that priorities are error prone in this case.
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@irar2
String's Range
could also be used for injection. The building of a query should probably be changed for this to work, since extension should receive parts of query which in SELECT
's case is SELECT
, FROM
, WHERE
and the others. It also should be aware of other extensions that is currently applied to the query to not cause any errors.
The extesion's build method could probably be like:
func injectExtension(into queryParts: [String]) -> [String]
or
func injectExtension(into query: String, to: Range) -> String
Priorities
was designed to work with Position
atm, so it won't be needed if we find a way to inject extension without it.
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