| Commit message (Collapse) | Author | Age |
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DataStoreQuery now encapsulates the low-level query that operates
directly on the storage. It no longer has access to the resource
buffers, and is instantiated by the type implementation, so we can
specialize the query alogorithm per type, but not per resource.
This will allow us to implement the threading queries for the mailtype.
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(except for documentation).
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Instead of having the asynchronous preprocessor concept with different
pipelines for new/modify/delete we have a single pipeline with
synchronous preprocessors that act upon new/modify/delete.
This keeps the code simpler due to lack of asynchronity and keeps the
new/modify/delete operations together (which at least for the indexing
makes a lot of sense).
Not supporting asynchronity is ok because the tasks done in
preprocessing are not cpu intensive (if they were we had a problem
since they are directly involved in the round-trip time), and the main
cost comes from i/o, meaning we don't gain much by doing multithreading.
Costly tasks (such as full-text indexing) should rather be implemented
as post-processing, since that doesn't increase the round-trip time directly,
and eventually consistent is typically good enough for that.
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Adding new types definitely needs to become easier.
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