hydra.src/desktop/FileItemCache.h

/*
 * Copyright (c) 2009 Aleksander B. Demko
 * This source code is distributed under the MIT license.
 * See the accompanying file LICENSE.MIT.txt for details.
 */

#ifndef __INCLUDED_HYDRADESKTOP_FILEITEMCACHE_H__
#define __INCLUDED_HYDRADESKTOP_FILEITEMCACHE_H__

#include <hydra/Records.h>
#include <desktop/LoadCache.h>

namespace desktop
{
  class FileItemCache;
}

/**
 * A cache mapping file hashes to FileItemRecords.
 *
 * THIS CLASS IS CURRENTLY NOT BEING USED.
 * Will reenable in the future when we want to catch circular references.
 *
 * @author Aleksander Demko
 */ 
class desktop::FileItemCache
{
  public:
    typedef LoadCacheBase<hydra::FileItemRecord,QUuid>::cache_ptr cache_ptr;

  public:
    FileItemCache(void);
    ~FileItemCache();

    static FileItemCache * instance(void) { return dm_instance; }

    //bool containsItem(const QString &fullfilename);

    // returns true on success
    bool getItem(const QString &fullfilename, desktop::cache_ptr<hydra::FileItemRecord,QUuid> &outitem, 
        QString &outhash, bool *needsBigRead = 0);

  private:
    LoadCacheBase<hydra::FileItemRecord, QUuid> dm_cache;

  private:
    static FileItemCache *dm_instance;
};

#endif