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
@@ -87,25 +87,25 @@ public:
      * queryByExample for T with the given Settings
      * 
      */
     virtual QArray<int> queryByExample( const T& t, int settings, const QDateTime& d = QDateTime() ) = 0;
 
     /**
      * find the OPimRecord with uid @param uid
      * returns T and T.isEmpty() if nothing was found
      */
     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
      */
     virtual void clear() = 0;
 
     /**
      * add T
      */
     virtual bool add( const T& t ) = 0;
 
     /**
      * remove
@@ -119,26 +119,34 @@ public:
 
     /*
      * setTheFrontEnd!!!
      */
     void setFrontend( Frontend* front );
 
     /**
      * set the read ahead count
      */
     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!
      */
     void setSaneCacheSize( int );
 
     uint readAhead()const;
 
 private:
     OPimAccessBackendPrivate *d;
     Frontend* m_front;
     uint m_read;
     int m_acc;
@@ -152,35 +160,47 @@ OPimAccessBackend<T>::OPimAccessBackend(int acc)
     m_front = 0l;
 }
 template <class T>
 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 )
+    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>
 void OPimAccessBackend<T>::setReadAhead( uint count ) {
     m_read = count;
 }
 template <class T>
 uint OPimAccessBackend<T>::readAhead()const {
     return m_read;
 }
 template <class T>
 int OPimAccessBackend<T>::access()const {