#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
 */
class OPimBasePrivate;
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
     */
private:
    OPimBasePrivate* d;     

};
/**
 * internal template base
 * T needs to implement the copy c'tor!!!
 */
class OTemplateBasePrivate;
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();
    
private:
    OTemplateBasePrivate *d;    
};

/*
 * 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