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#ifndef OPIE_TEMPLATE_BASE_H
#define OPIE_TEMPLATE_BASE_H
#include <qarray.h>
#include <opie/opimrecord.h>
/**
* Templates do not have a base class, This is why
* we've this class
* this is here to give us the possibility
* to have a common base class
* You may not want to use that interface internaly
* POOR mans interface
*/
struct OPimBase {
/**
* return the rtti
*/
virtual int rtti()= 0;
virtual OPimRecord* record()const = 0;
virtual OPimRecord* record(int uid)const = 0;
virtual bool add( const OPimRecord& ) = 0;
virtual bool remove( int uid ) = 0;
virtual bool remove( const OPimRecord& ) = 0;
virtual void clear() = 0;
virtual bool load() = 0;
virtual bool save() = 0;
virtual QArray<int> records()const = 0;
/*
* ADD editing here?
* -zecke
*/
};
/**
* internal template base
* T needs to implement the copy c'tor!!!
*/
template <class T = OPimRecord>
class OTemplateBase : public OPimBase {
public:
enum CacheDirection { Forward=0, Reverse };
OTemplateBase() {
};
virtual ~OTemplateBase() {
}
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;
/* reimplement of OPimBase */
int rtti();
OPimRecord* record()const;
OPimRecord* record(int uid )const;
static T* rec();
};
/*
* implementation
*/
template <class T>
int
OTemplateBase<T>::rtti() {
return T::rtti();
}
template <class T>
OPimRecord* OTemplateBase<T>::record()const {
T* t = new T;
return t;
}
template <class T>
OPimRecord* OTemplateBase<T>::record(int uid )const {
T t2 = find(uid );
T* t1 = new T(t2);
return t1;
};
template <class T>
T* OTemplateBase<T>::rec() {
return new T;
}
#endif
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