Akonadi::Server::CollectionStatistics Class Reference

#include <collectionstatistics.h>

Public Member Functions
void	expireCache ()
void	invalidateCollection (const Collection &col)
void	itemAdded (const Collection &col, qint64 size, bool seen)
void	itemsSeenChanged (const Collection &col, qint64 seenCount)
const Statistics	statistics (const Collection &col)

Static Public Member Functions
static void	destroy ()
static CollectionStatistics *	self ()

Protected Member Functions
	CollectionStatistics (bool prefetch=true)
virtual Statistics	calculateCollectionStatistics (const Collection &col)
QueryBuilder	prepareGenericQuery ()

Protected Attributes
QHash< qint64, Statistics >	mCache
QMutex	mCacheLock

Static Protected Attributes
static CollectionStatistics *	sInstance = nullptr

Detailed Description

Provides cache for collection statistics.

Collection statistics are requested very often, so to take some load from the database we cache the results until the statistics are invalidated (see NotificationCollector, which takes care for invalidating the statistics).

The cache (together with optimization of the actual SQL query) seems to massively improve initial folder listing on system start (when IO and CPU loads are very high).

Definition at line 47 of file server/storage/collectionstatistics.h.

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The documentation for this class was generated from the following files:

• server/storage/collectionstatistics.h
• server/storage/collectionstatistics.cpp