#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( const OPimCacheItem& ); ~OPimCacheItem(); OPimCacheItem &operator=( const 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( const OPimCache& ); ~OPimCache(); OPimCache &operator=( const 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(100, 53 ) { 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