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/*
This file is part of the Opie Project
Copyright (C) The Main Author <main-author@whereever.org>
=. Copyright (C) The Opie Team <opie-devel@handhelds.org>
.=l.
.>+-=
_;:, .> :=|. This program is free software; you can
.> <`_, > . <= redistribute it and/or modify it under
:`=1 )Y*s>-.-- : the terms of the GNU Library General Public
.="- .-=="i, .._ License as published by the Free Software
- . .-<_> .<> Foundation; either version 2 of the License,
._= =} : or (at your option) any later version.
.%`+i> _;_.
.i_,=:_. -<s. This program is distributed in the hope that
+ . -:. = it will be useful, but WITHOUT ANY WARRANTY;
: .. .:, . . . without even the implied warranty of
=_ + =;=|` MERCHANTABILITY or FITNESS FOR A
_.=:. : :=>`: PARTICULAR PURPOSE. See the GNU
..}^=.= = ; Library General Public License for more
++= -. .` .: details.
: = ...= . :.=-
-. .:....=;==+<; You should have received a copy of the GNU
-_. . . )=. = Library General Public License along with
-- :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef OPIE_PIM_CACHE_H
#define OPIE_PIM_CACHE_H
#include <qintcache.h>
#include <opie2/opimrecord.h>
namespace Opie {
class OPimCacheItemPrivate;
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;
OPimCacheItemPrivate *d;
};
class OPimCachePrivate;
/**
* 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;
OPimCachePrivate* d;
};
// 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
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