chainOfResponsibility

Behavioral/ChainOfResponsibility/BaseHandler.h

@@ -0,0 +1,22 @@
+#include <memory>
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\JobApplication.h"
+using namespace std;
+
+#ifndef BASE_HANDLER_H
+#define BASE_HANDLER_H
+
+class BaseHandler {
+    protected:
+    shared_ptr<BaseHandler> nextHandler;
+
+    public:
+    void setNext(shared_ptr<BaseHandler> handler) {
+        nextHandler = handler;
+    }
+
+    virtual void HandleRequest(shared_ptr<JobApplication> request) = 0;
+
+    virtual ~BaseHandler() = default;
+};
+
+#endif // BASE_HANDLER_H

Behavioral/ChainOfResponsibility/Client.cpp

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+#include <iostream>
+#include <memory>
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\BaseHandler.h"
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\HRHandler.h"
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\JobApplication.h"
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\TechHandler.h"
+using namespace std;
+
+int main() {
+    shared_ptr<JobApplication> jobApp = make_shared<JobApplication>();
+    jobApp -> ApplicantName = "Hend";
+    jobApp -> JobTitle = "SDE";
+    jobApp -> JobCode = "#122524";
+
+    shared_ptr<HRHandler> hr = make_shared<HRHandler>();
+    shared_ptr<TechHandler> tech = make_shared<TechHandler>();
+
+    hr -> setNext(tech);  // create the chain
+
+    hr -> HandleRequest(jobApp);  // start the chain
+
+
+    cout << jobApp -> showComments();
+
+}

Behavioral/ChainOfResponsibility/HRHandler.h

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+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\BaseHandler.h"
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\JobApplication.h"
+#include <memory>
+
+#ifndef HR_HANDLER_H
+#define HR_HANDLER_H
+
+class HRHandler : public BaseHandler {
+    public:
+    void toNext_Scenario3(shared_ptr <JobApplication> request) {
+        if(nextHandler != nullptr) {
+            nextHandler -> HandleRequest(request);
+        }
+        else {
+            request -> comments << "End by HR...\n";
+        }
+    }
+
+    void HandleRequest(shared_ptr<JobApplication> request) override{
+
+        #pragma region Scenario 1
+        // request -> comments << "HR evaluation comment.\n";
+
+        // if(nextHandler != nullptr) {
+        //     nextHandler -> HandleRequest(request);
+        // }
+        // else {
+        //     request -> comments << "End by HR Handler\n";
+        // }
+        #pragma endregion
+
+        #pragma region Scenario 2
+        // check if the handler is able to process the request or not
+        // if (request -> JobCode == "#1546") {
+        //     request -> comments << "HR Comment...\n";
+        // }
+        // else{  // send request to the next handler
+        //     if (nextHandler != nullptr) {
+        //     nextHandler -> HandleRequest(request);
+        //     }
+        //     else {
+        //         request -> comments << "End by HR Handler...\n";
+        //     }
+        // }
+        #pragma endregion
+
+        if (request -> JobCode == "#1546") {
+            request -> comments << "HR Comment...\n";
+            toNext_Scenario3(request);
+        }
+        else {
+            toNext_Scenario3(request);
+        }
+    }
+
+};
+
+#endif // HR_HANDLER_H

Behavioral/ChainOfResponsibility/JobApplication.h

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+#include <string>
+#include <sstream>
+using namespace std;
+
+#ifndef JOB_APPLICATION_H
+#define JOB_APPLICATION_H
+
+class JobApplication {
+    public:
+    string ApplicantName;
+    string JobTitle;
+    string JobCode;
+    stringstream comments;
+
+    string getComments() const {
+        return comments.str();
+    }
+
+    void setComments(const string& newComments) { 
+        comments.str("");
+        comments << newComments;
+    }
+
+    string showComments() const {
+        return comments.str();
+    }
+};
+
+#endif // JOB_APPLICATION_H

Behavioral/ChainOfResponsibility/TechHandler.h

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+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\BaseHandler.h"
+#include "C:\Users\Data-DCS\Design-Patterns\Behavioral\ChainOfResponsibility\JobApplication.h"
+#include <sstream>
+
+
+#ifndef TECH_HANDLER_H
+#define TECH_HANDLER_H
+
+class TechHandler : public BaseHandler {
+    public:
+    void toNext_Scenario3(shared_ptr <JobApplication> request) {
+        if (nextHandler != nullptr) {
+            nextHandler -> HandleRequest(request);
+        }
+        else {
+            request -> comments << "End by tech...\n";
+        }
+    }
+
+    void HandleRequest(shared_ptr<JobApplication> request) override{
+
+        #pragma region Scenario 1
+        // request -> comments << "Tech evaluation comment.\n";
+
+        // if(nextHandler != nullptr) {
+        //     nextHandler -> HandleRequest(request);
+        // }
+        // else{
+        //     request -> comments << "End by technical handler\n";
+        // }
+        #pragma endregion
+
+        #pragma region Scenario 2
+        // if (request -> JobCode == "#122524") {
+        //     request -> comments << "Tech Comment...\n";
+        // }
+        // else{
+        //     if(nextHandler != nullptr) {
+        //         nextHandler -> HandleRequest(request);
+        //     }
+        //     else {
+        //         request -> comments << "End by tech handler...\n";
+        //     }
+        // }
+        #pragma endregion
+
+        if(request -> JobCode == "#122524") {
+            request -> comments << "Tech comment...\n";
+            toNext_Scenario3(request);
+        }
+        else {
+            toNext_Scenario3(request);
+        }
+    }
+};
+
+#endif // TECH_HANDLER_H