研究长字符串快速全文检索技术，实现某电力公司新闻中心新闻稿件全文检索统计系统。
1、 设计实现适合新闻稿件的基础类库
2、 新闻稿件全文检索功能实现
3、 新闻稿件按照关键字统计查询
代码如下
Paper.h
#pragma once
#ifndef PAPER_H
// we're here only if PAPER_H has not yet been defined
#define PAPER_H // Definition of PAPER_H class and related functions goes here
#include <iostream>
#include <string>
#include <vector>
#define For(o,n) for (int i = 0; i < n; i++)
using namespace std;
class Paper {
protected:
int yy, mm, dd;
string unite;
string title;
//there declarations for kinds of news
public:
friend istream& operator >> (istream&, Paper&);
friend ostream& operator <<(ostream&, const Paper &);
Paper();
Paper(const Paper &asp);
virtual ~Paper() {}
void SetYMDear(const int year, const int month, const int day);
int GetYear()const;
int GetMonth()const;
int GetDay()const;
string GetTitle()const;
string GetUnite()const;
void SetUnite(const string Unite);
void SetTitle(const string Title);
virtual int CountWords(const string text) = ;
};
class Word :virtual public Paper {
protected:
string contain;
public:
friend istream& operator >> (istream&, Word&);
friend ostream& operator <<(ostream&, const Word &);
Word();
Word(const string con);
~Word() { }
int CountWords(const string text);
};
class vedio :virtual public Paper {
protected:
string act;
string Vname;
public:
friend istream& operator >> (istream&, vedio&);
friend ostream& operator <<(ostream&, const vedio&);
vedio();
~vedio() {}
vedio(const string ac, const string vn);
string GetAct()const;
string GetVName()const;
int CountWords(const string text);
};
class Record :virtual public vedio {
protected:
string ReName;
public:
friend istream& operator >> (istream&, Record&);
friend ostream& operator <<(ostream&, const Record &);
Record();
~Record() {}
Record(const string re);
int CountWords(const string text);
};
class Poem :virtual public Word {
public:
Poem() {}
~Poem() {}
int CountWords(const string text);
};
class Other :virtual public Word {
public:
Other() {}
~Other() {}
int CountWords(const string text);
};
#endif
Realize.h
#include"Paper.h"
istream& operator >> (istream&in, Paper&rhp) {
in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite;
in.ignore();
//getline(in, rhp.contain);
return in;
}
ostream& operator <<(ostream&out, const Paper &rhp) {
out << rhp.yy << endl
<< rhp.mm << endl
<< rhp.dd << endl
<< rhp.title << endl
<< rhp.unite << endl;
// << rhp.contain << endl;
return out;
}
Paper::Paper() :yy(), mm(), dd(), unite("xxx"), title("!!!") {}
Paper::Paper(const Paper &asp) { yy = asp.yy; mm = asp.mm; dd = asp.dd; unite = asp.unite; title = asp.title; }
void Paper::SetYMDear(const int year, const int month, const int day) { yy = year, mm = month, dd = day; }
void Paper::SetTitle(const string Title) { title = Title; }
void Paper::SetUnite(const string Unite) { unite = Unite; }
int Paper::GetDay()const { return dd; }
int Paper::GetYear()const { return yy; }
int Paper::GetMonth()const { return mm; }
string Paper::GetTitle()const { return title; }
string Paper::GetUnite()const { return unite; } istream& operator >> (istream&in, Word&rhp) {
in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite;
in.ignore();
getline(in, rhp.contain);
return in;
}
ostream& operator <<(ostream&out, const Word &rhp) {
out << rhp.yy << endl
<< rhp.mm << endl
<< rhp.dd << endl
<< rhp.title << endl
<< rhp.unite << endl
<< rhp.contain << endl;
return out;
}
Word::Word() :contain("xxx") { }
Word::Word(const string con) { contain = con; }
int Word::CountWords(const string text) {
int ans = ;
auto pos = contain.find(text);
while (pos != string::npos) {
ans++;
pos = contain.find(text, ++pos);
}
return ans;
}
istream& operator >> (istream&in, vedio&rhp) {
in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite >> rhp.Vname;
in.ignore();
getline(in, rhp.act);
return in;
}
ostream& operator <<(ostream&out, const vedio &rhp) {
out << rhp.yy << endl
<< rhp.mm << endl
<< rhp.dd << endl
<< rhp.title << endl
<< rhp.unite << endl
<< rhp.act << endl
<< rhp.Vname << endl;
return out;
}
vedio::vedio() :act("xxx"), Vname("XXXX") {}
vedio::vedio(const string ac, const string vn) { act = ac, Vname = vn; }
string vedio::GetAct()const { return act; }
string vedio::GetVName()const { return Vname; }
int vedio::CountWords(const string text) {
int ans = ;
int pos = act.find(text);
while (pos != string::npos) {
ans++;
pos = act.find(text, ++pos);
}
return ans;
}
istream& operator >> (istream&in, Record&rhp) {
in >> rhp.yy >> rhp.mm >> rhp.dd >> rhp.title >> rhp.unite >> rhp.ReName;
in.ignore();
getline(in, rhp.act);
return in;
}
ostream& operator <<(ostream&out, const Record &rhp) {
out << rhp.yy << endl
<< rhp.mm << endl
<< rhp.dd << endl
<< rhp.title << endl
<< rhp.unite << endl
<< rhp.act << endl
<< rhp.ReName << endl;
return out;
}
Record::Record() :ReName("XXXX") {}
Record::Record(const string re) { ReName = re; }
int Record::CountWords(const string text) {
return vedio::CountWords(text);
}
int Poem::CountWords(const string text) {
int ans = ;
string flag = GetTitle();
auto pos = flag.find(text);
while (pos != string::npos) {
ans++;
pos = flag.find(text, ++pos);
}
return ans;
}
int Other::CountWords(const string text)
{
int ans = ;
string flag = GetTitle();
auto pos = flag.find(text);
while (pos != string::npos) {
ans++;
pos = flag.find(text, ++pos);
}
return ans;
}
void ShowSTD() {
cout << "Please input kinds of News in follow fomat." << endl
<< "Word or Poem or Other News:" << endl
<< "Year Month Day Title Unite\nContain(Contain at the end of ENTER)" << endl
<< "vedio or Record News:" << endl
<< "Year Month Day Title Unite Filename\nAbstract(Abstract at the end of ENTER)" << endl;
}
test.cpp
#include"Realize.h"
int main() {
ShowSTD();
Paper *tp[];
Word a1;
vedio a2;
Record a3;
Poem a4;
Other a5;
string flag;
int n = ;
cout << "\nNow Inpt！！\nWord:";
cin >> a1;
tp[] = &a1;
cout << "vedio:";
cin >> a2;
tp[] = &a2;
cout << "Record:";
cin >> a3;
tp[] = &a3;
cout << "Poem:";
cin >> a4;
tp[] = &a4;
cout << "Other:";
cin >> a5;
tp[] = &a5;
cout << "Please enter the word you want to find:";
cin >> flag;
For(o, n)cout << tp[i]->CountWords(flag) << endl;
cout << endl;
For(o, n)cout << *(tp[i]) << endl;
return ;
}
测试截图如下：