poco库学习笔记(8) Poco::HashMap

一．Object类的定义：

#ifndef _OBJECT_H

#define _OBJECT_H

class Object{

public:

     Object(){}

     Object(std::string addr)

        :address(addr){

     }

     ~Object(){}

     std::string getAddress() const{

          return address;

     }

private:

     std::string address;

};

#endif

二．Client类的定义：

#ifndef _CLIENT_H

#define _CLIENT_H

class Client{

public:

     Client(){}

     Client(int arg1,double arg2,std::string arg3)

         :_arg1(arg1),_arg2(arg2),address(arg3){

     }

     ~Client(){}

     void toString(){

         std::cout<<"_arg1->"<<_arg1<<std::endl;

         std::cout<<"_arg2->"<<_arg2<<std::endl;

         std::cout<<"address->"<<address<<std::endl;

     }

     std::string getAddress() const{

         return address;

     }

private:

     int _arg1;

     double _arg2;

     std::string address;

};

#endif

三．HashProcessor的定义：

#ifndef _HASH_PROCESSOR_H

#define _HASH_PROCESSOR_H

#include <Poco/HashMap.h>

#include <iostream>

#include "client.h"

#include "object.h"

class HashProcessor{

public:

      HashProcessor(){};

      ~HashProcessor(){};

public:

      void addClient(Client* cli);

      void removeClient(const Object& obj);

      Client* getClient(const Object& obj);

      int getClientCount();

private:

      Poco::HashMap<std::string,Client*> _objMap;

};

#endif

四．HashProcessor类的实现：

#include "HashProcessor.h"

int HashProcessor::getClientCount(){

      return _objMap.size();

}

void HashProcessor::removeClient(const Object& obj){

       Poco::HashMap<std::string,Client*>::Iterator it = _objMap.find(obj.getAddress());

       if(it != _objMap.end()){

            Client* ci = it->second;

            std::cout<<"********** start remove **********"<<std::endl;

            _objMap.erase(it);

            std::cout<<"********** finish remove ***********"<<std::endl;

            delete ci;

      }

}

void HashProcessor::addClient(Client* cli){

       _objMap.insert(std::pair<std::string,Client*>(cli->getAddress(),cli));

}

Client* HashProcessor::getClient(const Object& obj){

      Poco::HashMap<std::string,Client*>::Iterator it = _objMap.find(obj.getAddress());

      if(it != _objMap.end()){

           return it->second;

      }

      return NULL;

}

五．Main函数的实现：

#include "HashProcessor.h"

#include <iostream>

int main(int argc,char** argv){

      HashProcessor processor;

      Client* cli = new Client(25,99,"linyanwen");

      std::cout<<"obj count->"<<processor.getClientCount()<<std::endl;

      processor.addClient(cli);

      std::cout<<"obj count->"<<processor.getClientCount()<<std::endl;

      Object obj("linyanwen");

      Client* ci = processor.getClient(obj);

      ci->toString();

      processor.removeClient(obj);

      std::cout<<"obj count->"<<processor.getClientCount()<<std::endl;

      return 0;

}

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