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FrederikBolding
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Explanation
This PR implements
BaseDataServiceand a function to wrapQueryClientto proxy requests accordingly.The
BaseDataService, similarly to theBaseControllerprovides the framework for building a service that can be registered and accessed via the messenger system, but also provides guarantees about per-request deduping, retries, caching, invalidation, state-while-revalidate etc via@tanstack/query-core.The
BaseDataServiceprovides two utilities for this:fetchQueryandfetchInfiniteQuery, which is similar but one is separated for special pagination behaviour. Each service has its own cache for the APIs that it exposes that must also be synchronized with the UI processes. To facilitate this synchronization, theBaseDataServicealso automatically providessubscribe,unsubscribeandinvalidateQueriesactions as well as acacheUpdateevent.The overall goal of the PR is to provide a base layer that can keep as much compatibility as possible with native TanStack Query while also simultaneously allowing us to have one source of truth per data service.
The synchronization is achieved via a special
QueryClientcreated bycreateUIQueryClient, which wraps functionality such as cache invalidation, provides the default proxied fetch behaviour and subscribes to cache updates from data services that it is observing (e.g. has active queries for).References
https://consensyssoftware.atlassian.net/browse/WPC-445
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