author | eilers <eilers> | 2004-08-29 12:50:18 (UTC) |
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committer | eilers <eilers> | 2004-08-29 12:50:18 (UTC) |
commit | 679d9fef2673eea18fe5d9c85df2b10b09a8a250 (patch) (side-by-side diff) | |
tree | 8b3d6dbef45568be6f5daac31094d6e599fdefdf /libopie2/opiepim/backend/opimaccessbackend.h | |
parent | 45327ef3c0f093fc227682f79158632afc09e6d1 (diff) | |
download | opie-679d9fef2673eea18fe5d9c85df2b10b09a8a250.zip opie-679d9fef2673eea18fe5d9c85df2b10b09a8a250.tar.gz opie-679d9fef2673eea18fe5d9c85df2b10b09a8a250.tar.bz2 |
Added lookahead caching for addressbook (SQL-only) for speed improvement.
Diffstat (limited to 'libopie2/opiepim/backend/opimaccessbackend.h') (more/less context) (ignore whitespace changes)
-rw-r--r-- | libopie2/opiepim/backend/opimaccessbackend.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/libopie2/opiepim/backend/opimaccessbackend.h b/libopie2/opiepim/backend/opimaccessbackend.h index 0682063..15a7b7f 100644 --- a/libopie2/opiepim/backend/opimaccessbackend.h +++ b/libopie2/opiepim/backend/opimaccessbackend.h @@ -96,7 +96,7 @@ public: virtual T find(int uid )const = 0; virtual T find(int uid, const QArray<int>& items, - uint current, typename Frontend::CacheDirection )const ; + uint current, typename Frontend::CacheDirection ) const; /** * clear the back end */ @@ -128,8 +128,16 @@ public: void setReadAhead( uint count ); protected: int access()const; + void cache( const T& t )const; + /** + * Returns the element with given uid out of the cache. + * Returns empty element if nothing was found. + * <b>Attention:</b> This just works if we have a frontend which contains the cache ! + */ + T cacheFind( int uid ) const; + /** * use a prime number here! */ @@ -161,17 +169,29 @@ void OPimAccessBackend<T>::setFrontend( Frontend* fr ) { } template <class T> void OPimAccessBackend<T>::cache( const T& t )const { - if (m_front ) + if ( m_front ) m_front->cache( t ); } + +template <class T> +T OPimAccessBackend<T>::cacheFind( int uid )const { + if ( ! m_front ){ + qWarning ( "No frontend assigned ! Therefore we cannot access the cache to return the right element!" ); + return T(); + } + + return m_front->cacheFind( uid ); +} + template <class T> void OPimAccessBackend<T>::setSaneCacheSize( int size) { - if (m_front ) + if ( m_front ) m_front->setSaneCacheSize( size ); } template <class T> T OPimAccessBackend<T>::find( int uid, const QArray<int>&, - uint, typename Frontend::CacheDirection )const { + uint, typename Frontend::CacheDirection ) const{ + qDebug( "*** Lookahead feature not supported. Fallback to default find!" ); return find( uid ); } template <class T> |