| Commit message (Collapse) | Author | Age |
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To have hierarchical debug output we have to pass around something at
run-time, there is no reasonable alternative. Log::Context provides the
identifier to do just that and largely replaces the debug component
idea.
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It is expected that a query returns nothing if the db is not existing
yet.
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This is really part of the storage, and will help us to cleanly
implement features like moving properties into a temporary place when
reading in a clean way as well.
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This allows us to make sure that references are not taken out of
context (the resource).
Because we need to use the type-specific accessors more we also ran into
a problem that we cannot "downcast" a reference with the change
recording still working, for that we have the cast<T>() operator now.
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Not pretty, but that at least allows us to centrally define
the string to type dispatch (It's somehow very hard to do in
C++ without repeating all types over and over in various interfaces).
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We have to access properties, so we need the mapper anyways, and the
ApplicationDomainType type shouldn't be a large overhead anyways.
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This is the initial refactoring to improve how we deal with the storage.
It does a couple of things:
* Rename Sink::Storage to Sink::Storage::DataStore to free up the
Sink::Storage namespace
* Introduce a Sink::ResourceContext to have a single object that can be
passed around containing everything that is necessary to operate on a
resource. This is a lot better than the multiple separate parameters
that we used to pass around all over the place, while still allowing
for dependency injection for tests.
* Tie storage access together using the new EntityStore that directly
works with ApplicationDomainTypes. This gives us a central place where
main storage, indexes and buffer adaptors are tied together, which
will also give us a place to implement external indexes, such as a
fulltextindex using xapian.
* Use ApplicationDomainTypes as the default way to pass around entities.
Instead of using various ways to pass around entities (buffers,
buffer adaptors, ApplicationDomainTypes), only use a single way.
The old approach was confusing, and was only done as:
* optimization; really shouldn't be necessary and otherwise I'm sure
we can find better ways to optimize ApplicationDomainType itself.
* a way to account for entities that have multiple buffers, a concept
that I no longer deem relevant.
While this commit does the bulk of the work to get there, the following
commits will refactor more stuff to get things back to normal.
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