hashindexscanner.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
 */
 
#ifndef  _SWATDB_HASHINDEXSCANNER_H_
#define  _SWATDB_HASHINDEXSCANNER_H_
 
 
#include <string>
#include <vector>
#include <mutex>
#include "swatdb_types.h"
 
#include "key.h"
 
class BufferManager;
class HashIndexFile;
class HashBucketPage;
class HashBucketPageScanner;
 
 
class HashIndexScanner{
 
  public:
 
    HashIndexScanner(HashIndexFile* index);
 
    HashIndexScanner(HashIndexFile* index, Key *key_val);
 
 
    ~HashIndexScanner();
 
    RecordId getNext();
 
    RecordId getNext(Key* key);
 
 
  private:
 
    HashIndexFile* index;
 
    bool full_scan;
 
 
    Key *search_key;
 
    BufferManager* buf_mgr;
 
    PageId cur_pid;
 
    HashBucketPage* cur_page;
 
    HashBucketPageScanner* bucket_scanner;
 
    PageId cur_dir_pid;
 
    bool scan_complete;
 
};
 
#endif