sink - A data access layer handling synchronization, caching and indexing

	Commit message (Collapse)	Author	Age
*	Removed most uses of SyncListResult and brought back the	Christian Mollekopf	2015-11-28
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*	Fixed build	Christian Mollekopf	2015-11-21
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*	Correctly execute modifications and removals	Christian Mollekopf	2015-10-28
\| \| \| \|	... also if there are intermediate revisions.
*	Made pipeline preprocessing synchronous.	Christian Mollekopf	2015-10-28
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	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.
*	Documentation on what tests are supposed to test.	Christian Mollekopf	2015-10-24
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*	Moved test implementations to central location.	Christian Mollekopf	2015-10-13
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*	Create a new revision for removals as well.	Christian Mollekopf	2015-10-10
\| \| \| \|	So we can replay the change.
*	Revision cleanup	Christian Mollekopf	2015-09-29
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*	Work with revisions in store + pipelinetest	Christian Mollekopf	2015-09-24
	Cleanup of revisions, and revision for removed entity is yet missing.