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#ifndef OPIE_PIM_ACCESS_TEMPLATE_H
#define OPIE_PIM_ACCESS_TEMPLATE_H
#include <qarray.h>
#include <opie/opimrecord.h>
#include <opie/opimaccessbackend.h>
#include <opie/orecordlist.h>
#include "opimcache.h"
#include "otemplatebase.h"
/**
* Thats the frontend to our OPIE PIM
* Library. Either you want to use it's
* interface or you want to implement
* your own Access lib
* Just create a OPimRecord and inherit from
* the plugins
*/
template <class T = OPimRecord >
class OPimAccessTemplate : public OTemplateBase<T> {
public:
typedef ORecordList<T> List;
typedef OPimAccessBackend<T> BackEnd;
typedef OPimCache<T> Cache;
/**
* c'tor BackEnd
*/
OPimAccessTemplate( BackEnd* end);
virtual ~OPimAccessTemplate();
/**
* load from the backend
*/
virtual bool load();
/**
* reload from the backend
*/
virtual bool reload();
/**
* save to the backend
*/
virtual bool save();
/**
* if the resource was changed externally
*/
bool wasChangedExternally()const;
/**
* return a List of records
* you can iterate over them
*/
virtual List allRecords()const;
/**
* queryByExample)
* @see otodoaccess, ocontactaccess
*/
virtual List queryByExample( const T& t, int querySettings );
/**
* find the OPimRecord uid
*/
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 */
/**
* clears the backend and invalidates the backend
*/
virtual void clear() ;
/**
* add T to the backend
*/
virtual bool add( const T& t ) ;
/* only the uid matters */
/**
* remove T from the backend
*/
virtual bool remove( const T& t );
/**
* remove the OPimRecord with uid
*/
virtual bool remove( int uid );
/**
* replace T from backend
*/
virtual bool replace( const T& t) ;
/**
* @internal
*/
void cache( const T& )const;
void setSaneCacheSize( int );
protected:
/**
* invalidate the cache
*/
void invalidateCache();
void setBackEnd( BackEnd* end );
/**
* returns the backend
*/
BackEnd* backEnd();
BackEnd* m_backEnd;
Cache m_cache;
};
template <class T>
OPimAccessTemplate<T>::OPimAccessTemplate( BackEnd* end )
: OTemplateBase<T>(), m_backEnd( end )
{
if (end )
end->setFrontend( this );
}
template <class T>
OPimAccessTemplate<T>::~OPimAccessTemplate() {
qWarning("~OPimAccessTemplate<T>");
delete m_backEnd;
}
template <class T>
bool OPimAccessTemplate<T>::load() {
invalidateCache();
return m_backEnd->load();
}
template <class T>
bool OPimAccessTemplate<T>::reload() {
return m_backEnd->reload();
}
template <class T>
bool OPimAccessTemplate<T>::save() {
return m_backEnd->save();
}
template <class T>
OPimAccessTemplate<T>::List OPimAccessTemplate<T>::allRecords()const {
QArray<int> ints = m_backEnd->allRecords();
List lis(ints, this );
return lis;
}
template <class T>
OPimAccessTemplate<T>::List
OPimAccessTemplate<T>::queryByExample( const T& t, int sortOrder ) {
QArray<int> ints = m_backEnd->queryByExample( t, sortOrder );
List lis(ints, this );
return lis;
}
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 ) ) {
return m_cache.find( uid );
}
T t = m_backEnd->find( uid, ar, current, dir );
cache( t );
return t;
}
template <class T>
void OPimAccessTemplate<T>::clear() {
invalidateCache();
m_backEnd->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 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>
OPimAccessTemplate<T>::BackEnd* OPimAccessTemplate<T>::backEnd() {
return m_backEnd;
}
template <class T>
bool OPimAccessTemplate<T>::wasChangedExternally()const {
return false;
}
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
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