Merge pull request #5 from swiftlydesigner/2-connect-to-db-with-basic-operations

2 connect to db with basic operations

Author: swiftlydesigner

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.11.35327.3
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PA 8", "PA 8\PA 8.vcxproj", "{D8F947FC-58E4-452F-BEC2-C0B905D238B6}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Debug|x64.ActiveCfg = Debug|x64
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Debug|x64.Build.0 = Debug|x64
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Debug|x86.ActiveCfg = Debug|Win32
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Debug|x86.Build.0 = Debug|Win32
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Release|x64.ActiveCfg = Release|x64
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Release|x64.Build.0 = Release|x64
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Release|x86.ActiveCfg = Release|Win32
+		{D8F947FC-58E4-452F-BEC2-C0B905D238B6}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {FF09BBAC-5D60-476F-B3BE-58FC631E615C}
+	EndGlobalSection
+EndGlobal

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Analysis/BusinessReviewAnalyzer.cpp

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+//
+//  BusinessReviewAnalyzer.cpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/18/24.
+//
+
+/// TODO: Implement BusinessReviewAnalyzer!
+
+#include "BusinessReviewAnalyzer.hpp"

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Analysis/BusinessReviewAnalyzer.hpp

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+//
+//  BusinessReviewAnalyzer.hpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/18/24.
+//
+
+/// TODO: Design BusinessReviewAnalyzer!
+
+#ifndef BusinessReviewAnalyzer_hpp
+#define BusinessReviewAnalyzer_hpp
+
+#include "../Entities/GoogleReviewEntity.hpp"
+
+using std::vector;
+
+class BusinessReviewAnalyzer final {
+    vector<GoogleReviewEntity> _entites;
+    
+public:
+    BusinessReviewAnalyzer(const vector<GoogleReviewEntity>);
+    
+    /// TODO: Add your functions for analysis here!
+};
+
+#endif /* BusinessReviewAnalyzer_hpp */

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Analysis/Reviewer.hpp

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+//
+//  Reviewer.hpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/29/24.
+//
+
+#ifndef Reviewer_hpp
+#define Reviewer_hpp
+
+#include <vector>
+
+using std::vector;
+
+template <class T>
+class Reviewer {
+    vector<T> _entities;
+    
+public:
+    Reviewer();
+    Reviewer(const vector<T>& entities);
+    
+    Reviewer(const Reviewer& copy);
+    Reviewer operator=(const Reviewer& rhs);
+    
+    virtual ~Reviewer();
+    
+    virtual vector<T> entities();
+    
+    virtual T getMax() = 0;
+    virtual T getMin() = 0;
+};
+
+#endif /* Reviewer_hpp */

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/DIRECTIONS.md

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+# Files to Modify
+    TLDR: Look for TODOs throughout the program
+1. Analysis/
+1.1 Please inherit from Reviewer and be sure to specialize the inheritee
+2. Tree/Tree.hpp
+3. Tree/Tree.cpp
+4. Tree/TreeNode.cpp
+5. Tree/TreeNode.cpp
+6. ReviewApp.hpp
+7. ReviewApp.cpp
+8. Files you create?
+
+# Files to Look at, but Don't Modify
+Be sure to look at the files below:
+1. Anything under Entites, Database, or Types
+2. LoginController.hpp
+3. All other functions in LoginController.cpp
+4. NodeData.hpp
+5. NodeData.cpp
+6. TreeBase.hpp
+7. main.cpp
+
+# Instructions
+See Canvas for PA instructions, requirements, and grading rubric.
+
+# Users
+## Single Country (Country code is the login)
+1. username = US, password = US
+2. username = GB, password = GB
+3. username = DE, password = DE
+4. username = CA, password = CA
+5. username = BR, password = BR
+6. username = FR, password = FR
+7. username = AU, password = AU
+
+## Multi Country
+1. username = user, password = password
+
+# Install
+See README.md.

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Database/DbRepository.cpp

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+//
+//  DbRepository.cpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/3/24.
+//
+
+/// Attention students: Nothing to do here!
+
+#include <iostream>
+
+#include "DbRepository.hpp"
+
+/// Construct a controller with a given filled out URL
+/// @Param fullURL The complete server URL for connecting to
+DbRepository::DbRepository(const string& fullURL) {
+    this->url = fullURL;
+}
+
+/// Cleanup before destroying obejct
+DbRepository::~DbRepository() {
+    
+}
+
+/// Select all rows from a given table
+/// @Param table The table to read everything from
+pqxx::result DbRepository::selectAllFrom(const string& table) const {
+    pqxx::result results = pqxx::result();
+    
+    try {
+        // Connect to the database
+        pqxx::connection conn(url);
+        
+        // Check if the connection is open
+#ifdef DEBUG
+        if (conn.is_open()) {
+            std::cout << "Opened database successfully: " << conn.dbname() << std::endl;
+        } else {
+            std::cout << "Can't open database" << std::endl;
+            return results;
+        }
+#else
+        if (!conn.is_open()) {
+            return results;
+        }
+#endif
+        
+        // Create a non-transactional object
+        pqxx::work trans(conn);
+        
+        // Execute a SQL query
+        results = trans.exec("SELECT * FROM " + table + ";");
+        
+        // Print the result
+        return results;
+        
+    } catch (const pqxx::sql_error &e) {
+        std::cerr << "SQL error: " << e.what() << std::endl;
+        std::cerr << "Query: " << e.query() << std::endl;
+    } catch (const std::exception &e) {
+        std::cerr << e.what() << std::endl;
+    }
+    return results;
+}
+
+/// Select all fields from a given table
+/// @Param fields The fields to select in
+/// @Param table The table to read from
+/// @Param where Conditionals
+pqxx::result DbRepository::selectWhere(const string& fields, const string& table, const string& where) const {
+    pqxx::result results;
+
+    try {
+        
+        // Connect to the database
+        pqxx::connection conn(url);
+        
+        // Check if the connection is open
+#ifdef DEBUG
+        if (conn.is_open()) {
+            std::cout << "Opened database successfully: " << conn.dbname() << std::endl;
+        } else {
+            std::cout << "Can't open database" << std::endl;
+            return results;
+        }
+#else
+        if (!conn.is_open()) {
+            return results;
+        }
+#endif
+        
+        // Create a transactional object
+        pqxx::work trans(conn);
+        
+        // Execute a SQL query
+        results = trans.exec("SELECT " + fields + " FROM " + table + " WHERE " + where + ";");
+        
+    } catch (const pqxx::sql_error &e) {
+        std::cerr << "SQL error: " << e.what() << std::endl;
+        std::cerr << "Query: " << e.query() << std::endl;
+    } catch (const std::exception &e) {
+        std::cerr << "Exception: " << e.what() << std::endl;
+    }
+    return results;
+}

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Database/DbRepository.hpp

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+//
+//  DbRepository.hpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/3/24.
+//
+
+/// Attention students: Nothing to do here!
+
+#ifndef DbRepository_hpp
+#define DbRepository_hpp
+
+#include <string>
+#include <pqxx/pqxx>
+
+using std::string;
+
+class DbRepository {
+    /// Disable copy constructor
+    DbRepository(DbRepository& copy) = delete;
+    /// Disable = operator
+    DbRepository operator=(const DbRepository&rhs) = delete;
+    
+    string url;
+    
+public:
+    /// Construct a controller with a given filled out URL
+    /// @Param fullURL The complete server URL for connecting to
+    DbRepository(const string& fullURL);
+    
+    /// Cleanup before destroying obejct
+    ~DbRepository();
+    
+    /// Select all rows from a given table
+    pqxx::result selectAllFrom(const string& table) const;
+    
+    /// Select a fields form a row where the conditions are met from the given table
+    pqxx::result selectWhere(const string& fields, const string& table, const string& where) const;
+};
+
+#endif /* DbRepository_hpp */

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Database/DbService.cpp

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+//
+//  DbService.cpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/17/24.
+//
+
+/// Attention students: Nothing to do here!
+
+#include "DbService.hpp"
+
+/// Create a service item to access a database
+/// @Param serverAddress The URL, containing auth info for target DB
+DbService::DbService(const string& serverAddress) : _repo(serverAddress) {
+    
+}
+
+/// Get all reviews in the database
+vector<GoogleReviewEntity> DbService::getAllReviews() {
+    vector<GoogleReviewEntity> entities = vector<GoogleReviewEntity>();
+    
+    pqxx::result res = _repo.selectAllFrom("google_reviews");
+    
+    for (pqxx::row row : res) {
+        entities.push_back(GoogleReviewEntity(row));
+    }
+    
+    return entities;
+}
+
+/// Get reviews in the database with the constraints
+/// @Param country The country to filter by
+vector<GoogleReviewEntity> DbService::getReviewsWithCountry(Country country) {
+    vector<GoogleReviewEntity> entities = vector<GoogleReviewEntity>();
+    
+    pqxx::result res = _repo.selectWhere("*", "google_reviews", "country = '" + countryToString(country) + "'");
+    
+    for (pqxx::row row : res) {
+        entities.push_back(GoogleReviewEntity(row));
+    }
+    
+    return entities;
+}
+
+/// Get the login info for the specified username.
+/// @Param username The username to login with
+QueryResultVector DbService::getLoginDataForUser(const std::string& username) {
+    QueryResultVector data = {};
+    
+    pqxx::result result = this->_repo.selectWhere("password, countries", "google_login", "username = '" + username + "'");
+    
+    const pqxx::row& row = result.front();
+    
+    data.push_back(make_pair("password", row["password"].as< optional<string> >()));
+    data.push_back(make_pair("country", row["countries"].as< optional<string> >()));
+    data.push_back(make_pair("usr", username));
+    
+    return data;
+}

Development/Windows/x64-proj/Visual Studio/PA 8/PA 8/Database/DbService.hpp

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+//
+//  DbService.hpp
+//  PostgreSQL
+//
+//  Created by Kyle Parker on 10/17/24.
+//
+
+/// Attention students: Nothing to do here!
+
+#ifndef DbService_hpp
+#define DbService_hpp
+
+#include <vector>
+
+#include "DbRepository.hpp"
+#include "../Entities/GoogleReviewEntity.hpp"
+
+using std::vector;
+using std::pair;
+using std::make_pair;
+
+using QueryResultVector = vector< pair<string, optional<string> > >;
+
+class DbService final {
+    DbRepository _repo;
+    
+public:
+    /// Create a service item to access a database
+    /// @Param serverAddress The URL, containing auth info for target DB
+    DbService(const string& serverAddress);
+    
+    /// Get all reviews in the database
+    vector<GoogleReviewEntity> getAllReviews();
+    
+    /// Get reviews in the database with the constraints
+    /// @Param country The country to filter by
+    vector<GoogleReviewEntity> getReviewsWithCountry(Country country);
+    
+    /// Get the login data in the form of a vector
+    /// @Param username The username to login under
+    QueryResultVector getLoginDataForUser(const std::string& username);
+};
+
+#endif /* DbService_hpp */