filemgr.h

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/*
 * SwatDB
 *
 * @authors: See Contributors.doc for code contributors
 *
 * Copyright (c) 2020 Swarthmore College Computer Science Department
 * Swarthmore PA, Professors Tia Newhall, Ameet Soni
 */

#pragma once

#include <string>
#include <vector>
#include "swatdb_types.h"

// too many circular includes, just define these types like
// this and include the .h file for them in the .cpp files:
class BufferManager;
class Catalog;
class Schema;
class File;

class FileManager {

  public:

    FileManager(Catalog *cat, BufferManager *buf_mgr,
        bool load = false);  // default value paramater

    ~FileManager();

    FileId createRelation(std::string name, Schema *schema, CatType type,
        std::string file_name);

    void removeRelation(std::string name);

    void removeFile(FileId file_id);

    File* getRelation(std::string name);

    File* getFile(FileId file_id);


  protected:

    void _removeAllFiles();

    void _closeAllFiles();

    friend class SwatDB;

  private:

    void _loadAllFiles();

    void _loadFile(FileId fid);

    Catalog *catalog;

    BufferManager *buf_mgr;

};