line_item_parser.h

#ifndef AGGREGATION_LINE_ITEM_PARSER_H
#define AGGREGATION_LINE_ITEM_PARSER_H

#include <iostream>
#include <fstream>
#include <algorithm>
#include <sys/time.h>
#include <vector>
#include <string.h>


struct LineItem {
    int order_key;
    int part_key;
    int supp_key;
    int line_number;
    double quantity;
    double extended_price;
    double discount;
    double tax;
    char return_flag;
    char line_status;
    tm ship_date;
    tm commit_date;
    tm receipt_date;
    char ship_instruct[25];
    char ship_mode[10];
    char comment[44];

    friend std::ostream &operator<<(std::ostream &output, const LineItem &item) {
        output << item.order_key << "|" << item.quantity << "|";
        return output;
    }
};


std::vector<LineItem> &ReadAndParseLineItems(const std::string &file_path);

void ReadAndProjAllLineItems(const std::string &file_path);


struct ProjLineItem {
    int order_key = 0;
    int quantity = 0;

    bool operator==(const ProjLineItem b) const {
        return (this->order_key == b.order_key) && (this->quantity == b.quantity);
    }
};

std::vector<ProjLineItem *> *ReadAndParseProjLineItems(const std::string &file_path);


#endif //AGGREGATION_LINE_ITEM_PARSER_H