/*
 * EntryBuffer.h
 *
 *  Created on: 2014Äê7ÔÂ3ÈÕ
 *      Author: hanshuo
 */

#ifndef ENTRYBUFFER_H_
#define ENTRYBUFFER_H_

class SigEntry;
#include<stdio.h>

/* EntryBuffer is used to loading entries from hard disk when building VSTree. */
class EntryBuffer
{
private:
    int capacity;
    int num;
    SigEntry* elems;
public:

    static int DEFAULT_CAPACITY;

    EntryBuffer(int _capacity=200000); // to be determine the default capacity.
    ~EntryBuffer();
    int getCapacity()const;
    int getNum()const;
    bool isEmpty()const;
    bool isFull()const;
    SigEntry* getElem(int _i);
    bool insert(const SigEntry& _entry);
    int fillElemsFromFile(FILE* _p_file); // fill this buffer with SigEntry from _p_file, until the buffer is full or meeting EOF.
    void clear();

};



#endif /* ENTRYBUFFER_H_ */