| -rw-r--r-- | libopie2/opiepim/backend/obackendfactory.h | 20 | ||||
| -rw-r--r-- | libopie2/opiepim/backend/opimaccessbackend.h | 40 | ||||
| -rw-r--r-- | libopie2/opiepim/core/opimaccesstemplate.h | 57 | ||||
| -rw-r--r-- | libopie2/opiepim/core/opimcache.h | 117 | ||||
| -rw-r--r-- | libopie2/opiepim/core/otemplatebase.h | 11 | ||||
| -rw-r--r-- | libopie2/opiepim/orecordlist.h | 20 |
6 files changed, 248 insertions, 17 deletions
diff --git a/libopie2/opiepim/backend/obackendfactory.h b/libopie2/opiepim/backend/obackendfactory.h index f11f029..89b8c58 100644 --- a/libopie2/opiepim/backend/obackendfactory.h +++ b/libopie2/opiepim/backend/obackendfactory.h @@ -17,4 +17,11 @@ * History: * $Log$ + * Revision 1.3 2002/10/10 17:08:58 zecke + * The Cache is finally in place + * I tested it with my todolist and it 'works' for 10.000 todos the hits are awesome ;) + * The read ahead functionality does not make sense for XMLs backends because most of the stuff is already in memory. While using readahead on SQL makes things a lot faster.... + * I still have to fully implement read ahead + * This change is bic but sc + * * Revision 1.2 2002/10/08 09:27:36 eilers * Fixed libopie.pro to include the new pim-API. @@ -29,6 +36,6 @@ * ===================================================================== */ -#ifndef __OPIE_BACKENDFACTORY_H_ -#define __OPIE_BACKENDFACTORY_H_ +#ifndef OPIE_BACKENDFACTORY_H_ +#define OPIE_BACKENDFACTORY_H_ #include <qstring.h> @@ -39,7 +46,8 @@ #include "ocontactaccessbackend_xml.h" -#ifdef __USE_SQL +/*#ifdef __USE_SQL #include "otodoaccesssql.h" #endif +*/ template<class T> @@ -73,11 +81,11 @@ class OBackendFactory switch ( *dict.take( backendName ) ){ case TODO: -#ifdef __USE_SQL +/*#ifdef __USE_SQL if ( backend == "sql" ) return (T*) new OTodoAccessBackendSQL(""); -#else +#else*/ if ( backend == "sql" ) qWarning ("OBackendFactory:: sql Backend not implemented! Using XML instead!"); -#endif +//#endif return (T*) new OTodoAccessXML( appName ); diff --git a/libopie2/opiepim/backend/opimaccessbackend.h b/libopie2/opiepim/backend/opimaccessbackend.h index c27acbb..27d3cb8 100644 --- a/libopie2/opiepim/backend/opimaccessbackend.h +++ b/libopie2/opiepim/backend/opimaccessbackend.h @@ -4,4 +4,5 @@ #include <qarray.h> +#include <opie/otemplatebase.h> #include <opie/opimrecord.h> @@ -18,4 +19,5 @@ template <class T = OPimRecord> class OPimAccessBackend { public: + typedef OTemplateBase<T> Frontend; OPimAccessBackend(); virtual ~OPimAccessBackend(); @@ -55,4 +57,6 @@ public: virtual T find(int uid )const = 0; + virtual T find(int uid, const QArray<int>& items, + uint current, Frontend::CacheDirection )const ; /** * clear the back end @@ -75,4 +79,19 @@ public: virtual bool replace( const T& t ) = 0; + /* + * setTheFrontEnd!!! + */ + void setFrontend( Frontend* front ); + +protected: + void cache( const T& t )const; + + /** + * use a prime number here! + */ + void setSaneCacheSize( int ); + +private: + Frontend* m_front; }; @@ -80,5 +99,5 @@ public: template <class T> OPimAccessBackend<T>::OPimAccessBackend() { - + m_front = 0l; } template <class T> @@ -86,4 +105,23 @@ OPimAccessBackend<T>::~OPimAccessBackend() { } +template <class T> +void OPimAccessBackend<T>::setFrontend( Frontend* fr ) { + m_front = fr; +} +template <class T> +void OPimAccessBackend<T>::cache( const T& t )const { + if (m_front ) + m_front->cache( t ); +} +template <class T> +void OPimAccessBackend<T>::setSaneCacheSize( int size) { + if (m_front ) + m_front->setSaneCacheSize( size ); +} +template <class T> +T OPimAccessBackend<T>::find( int uid, const QArray<int>&, + uint, Frontend::CacheDirection )const { + return find( uid ); +} #endif diff --git a/libopie2/opiepim/core/opimaccesstemplate.h b/libopie2/opiepim/core/opimaccesstemplate.h index 31ab516..92d7192 100644 --- a/libopie2/opiepim/core/opimaccesstemplate.h +++ b/libopie2/opiepim/core/opimaccesstemplate.h @@ -8,4 +8,5 @@ #include <opie/orecordlist.h> +#include "opimcache.h" #include "otemplatebase.h" @@ -24,4 +25,5 @@ public: typedef ORecordList<T> List; typedef OPimAccessBackend<T> BackEnd; + typedef OPimCache<T> Cache; /** @@ -74,4 +76,10 @@ public: virtual T find( int uid )const; + /** + * read ahead cache find method ;) + */ + virtual T find( int uid, const QArray<int>&, + uint current, CacheDirection dir = Forward )const; + /* invalidate cache here */ /** @@ -100,4 +108,10 @@ public: */ virtual bool replace( const T& t) ; + + /** + * @internal + */ + void cache( const T& )const; + void setSaneCacheSize( int ); protected: /** @@ -112,4 +126,5 @@ protected: BackEnd* backEnd(); BackEnd* m_backEnd; + Cache m_cache; }; @@ -119,5 +134,6 @@ OPimAccessTemplate<T>::OPimAccessTemplate( BackEnd* end ) : OTemplateBase<T>(), m_backEnd( end ) { - + if (end ) + end->setFrontend( this ); } template <class T> @@ -128,4 +144,5 @@ OPimAccessTemplate<T>::~OPimAccessTemplate() { template <class T> bool OPimAccessTemplate<T>::load() { + invalidateCache(); return m_backEnd->load(); } @@ -155,4 +172,24 @@ template <class T> T OPimAccessTemplate<T>::find( int uid ) const{ T t = m_backEnd->find( uid ); + cache( t ); + return t; +} +template <class T> +T OPimAccessTemplate<T>::find( int uid, const QArray<int>& ar, + uint current, CacheDirection dir )const { + /* + * better do T.isEmpty() + * after a find this way we would + * avoid two finds in QCache... + */ + // qWarning("find it now %d", uid ); + if (m_cache.contains( uid ) ) { + qWarning("m cache contains %d", uid); + return m_cache.find( uid ); + } + + T t = m_backEnd->find( uid, ar, current, dir ); + qWarning("found it and cache it now %d", uid); + cache( t ); return t; } @@ -164,21 +201,24 @@ void OPimAccessTemplate<T>::clear() { template <class T> bool OPimAccessTemplate<T>::add( const T& t ) { + cache( t ); return m_backEnd->add( t ); } template <class T> bool OPimAccessTemplate<T>::remove( const T& t ) { - return m_backEnd->remove( t.uid() ); + return remove( t.uid() ); } template <class T> bool OPimAccessTemplate<T>::remove( int uid ) { + m_cache.remove( uid ); return m_backEnd->remove( uid ); } template <class T> bool OPimAccessTemplate<T>::replace( const T& t ) { + m_cache.replace( t ); return m_backEnd->replace( t ); } template <class T> void OPimAccessTemplate<T>::invalidateCache() { - + m_cache.invalidate(); } template <class T> @@ -193,4 +233,15 @@ template <class T> void OPimAccessTemplate<T>::setBackEnd( BackEnd* end ) { m_backEnd = end; + if (m_backEnd ) + m_backEnd->setFrontend( this ); +} +template <class T> +void OPimAccessTemplate<T>::cache( const T& t ) const{ + /* hacky we need to work around the const*/ + ((OPimAccessTemplate<T>*)this)->m_cache.add( t ); +} +template <class T> +void OPimAccessTemplate<T>::setSaneCacheSize( int size ) { + m_cache.setSize( size ); } #endif diff --git a/libopie2/opiepim/core/opimcache.h b/libopie2/opiepim/core/opimcache.h new file mode 100644 index 0000000..067f6e7 --- a/dev/null +++ b/libopie2/opiepim/core/opimcache.h @@ -0,0 +1,117 @@ +#ifndef OPIE_PIM_CACHE_H +#define OPIE_PIM_CACHE_H + +#include <qintcache.h> + +#include "opimrecord.h" + +template <class T = OPimRecord> +class OPimCacheItem { +public: + OPimCacheItem( const T& t = T() ); + ~OPimCacheItem(); + + T record()const; + void setRecord( const T& ); +private: + T m_t; +}; + +/** + * OPimCache for caching the items + * We support adding, removing + * and finding + */ +template <class T = OPimRecord> +class OPimCache { +public: + typedef OPimCacheItem<T> Item; + OPimCache(); + ~OPimCache(); + + bool contains(int uid)const; + void invalidate(); + void setSize( int size ); + + T find(int uid )const; + void add( const T& ); + void remove( int uid ); + void replace( const T& ); + +private: + QIntCache<Item> m_cache; +}; + +// Implementation +template <class T> +OPimCacheItem<T>::OPimCacheItem( const T& t ) + : m_t(t) { +} +template <class T> +OPimCacheItem<T>::~OPimCacheItem() { + +} +template <class T> +T OPimCacheItem<T>::record()const { + return m_t; +} +template <class T> +void OPimCacheItem<T>::setRecord( const T& t ) { + m_t = t; +} +// Cache +template <class T> +OPimCache<T>::OPimCache() { + m_cache.setAutoDelete( TRUE ); +} +template <class T> +OPimCache<T>::~OPimCache() { + +} +template <class T> +bool OPimCache<T>::contains(int uid )const { + Item* it = m_cache.find( uid, FALSE ); + if (!it) + return false; + return true; +} +template <class T> +void OPimCache<T>::invalidate() { + m_cache.clear(); +} +template <class T> +void OPimCache<T>::setSize( int size ) { + m_cache.setMaxCost( size ); +} +template <class T> +T OPimCache<T>::find(int uid )const { + Item *it = m_cache.find( uid ); + if (it) + return it->record(); + return T(); +} +template <class T> +void OPimCache<T>::add( const T& t ) { + Item* it = 0l; + it = m_cache.find(t.uid(), FALSE ); + + if (it ) + it->setRecord( t ); + + it = new Item( t ); + if (!m_cache.insert( t.uid(), it ) ) + delete it; +} +template <class T> +void OPimCache<T>::remove( int uid ) { + m_cache.remove( uid ); +} +template <class T> +void OPimCache<T>::replace( const T& t) { + Item *it = m_cache.find( t.uid() ); + if ( it ) { + it->setRecord( t ); + } +} + +#endif diff --git a/libopie2/opiepim/core/otemplatebase.h b/libopie2/opiepim/core/otemplatebase.h index f71417b..b855919 100644 --- a/libopie2/opiepim/core/otemplatebase.h +++ b/libopie2/opiepim/core/otemplatebase.h @@ -2,4 +2,6 @@ #define OPIE_TEMPLATE_BASE_H +#include <qarray.h> + #include "opimrecord.h" @@ -10,4 +12,5 @@ template <class T = OPimRecord> class OTemplateBase { public: + enum CacheDirection { Forward=0, Reverse }; OTemplateBase() { }; @@ -16,4 +19,12 @@ public: virtual T find( int uid )const = 0; + /** + * read ahead find + */ + virtual T find( int uid, const QArray<int>& items, + uint current, CacheDirection dir = Forward )const = 0; + virtual void cache( const T& )const = 0; + virtual void setSaneCacheSize( int ) = 0; + }; diff --git a/libopie2/opiepim/orecordlist.h b/libopie2/opiepim/orecordlist.h index b6fa7fa..08f5c85 100644 --- a/libopie2/opiepim/orecordlist.h +++ b/libopie2/opiepim/orecordlist.h @@ -69,4 +69,5 @@ private: bool m_end : 1; T m_record; + bool m_direction :1; /* d pointer for future versions */ @@ -126,4 +127,6 @@ ORecordListIterator<T>::ORecordListIterator() { m_end = true; m_record = T(); + /* forward */ + m_direction = TRUE; } template <class T> @@ -140,4 +143,5 @@ ORecordListIterator<T>::ORecordListIterator( const ORecordListIterator<T>& it) { m_end = it.m_end; m_record = it.m_record; + m_direction = it.m_direction; } @@ -157,9 +161,7 @@ T ORecordListIterator<T>::operator*() { qWarning("operator* %d %d", m_current, m_uids[m_current] ); if (!m_end ) - /* FIXME - * until the cache is in place - * we do the uid match uid check - */ - m_record = m_temp->find( m_uids[m_current] ); + m_record = m_temp->find( m_uids[m_current], m_uids, m_current, + m_direction ? Base::Forward : + Base::Reverse ); else m_record = T(); @@ -170,4 +172,5 @@ T ORecordListIterator<T>::operator*() { template <class T> ORecordListIterator<T> &ORecordListIterator<T>::operator++() { + m_direction = true; if (m_current < m_uids.count() ) { m_end = false; @@ -180,4 +183,5 @@ ORecordListIterator<T> &ORecordListIterator<T>::operator++() { template <class T> ORecordListIterator<T> &ORecordListIterator<T>::operator--() { + m_direction = false; if ( m_current > 0 ) { --m_current; @@ -208,5 +212,6 @@ template <class T> ORecordListIterator<T>::ORecordListIterator( const QArray<int> uids, const Base* t ) - : m_uids( uids ), m_current( 0 ), m_temp( t ), m_end( false ) + : m_uids( uids ), m_current( 0 ), m_temp( t ), m_end( false ), + m_direction( false ) { } @@ -255,5 +260,6 @@ return m_ids.count(); template <class T> T ORecordList<T>::operator[]( uint i ) { - return m_acc->find( m_ids[i] ); + /* forward */ + return m_acc->find( m_ids[i], m_ids, i ); } #endif |