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Fixing db readmes
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‎03-database-joins/README.md

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# JOIN query exercises
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This repository contains several exercises to practice SQL join queries against a simple E-commerce database.
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The exercises in this project are designed to help you review your knowledge of SQL JOIN statements.
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## Creating the database
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‎04-database-subqueries/README.md

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# Subquery exercises
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This repository contains several exercises to practice SQL subqueries against a simple E-commerce database.
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The exercises in this project are designed to help you review your knowledge of SQL subqueries.
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## Creating the database
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‎12-testing-rest-apis-with-postman/README.md

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# Testing APIs with Postman
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The exercises in this project are designed to help you understand using Postman
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to test REST APIs.
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## Getting Started
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To get started, open the project file located in `spring-boot-and-mvc/pom.xml`
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in IntelliJ, and open Postman on your desktop.
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## Project Overview
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This project contains a simple Spring Boot application. You will not need to
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modify the code in this project, you will just be using Postman to test the
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REST endpoints.
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## Exercise
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## Testing / Verification
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There are no tests for this exercise. You can verify that your work is correct
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based on the end points returning the expected results.
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‎12-testing-rest-apis-with-postman/testing-rest-apis-with-postman/.idea/uiDesigner.xml

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‎12-testing-rest-apis-with-postman/testing-rest-apis-with-postman/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>3.3.5</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>org.example</groupId>
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<artifactId>testing-rest-apis-with-postman</artifactId>
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<version>1.0-SNAPSHOT</version>
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<artifactId>spring-boot</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>spring-boot</name>
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<description>Demo project for Spring Boot</description>
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<url/>
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<licenses>
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<license/>
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</licenses>
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<developers>
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<developer/>
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</developers>
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<scm>
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<connection/>
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<developerConnection/>
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<tag/>
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<url/>
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</scm>
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<properties>
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<maven.compiler.source>23</maven.compiler.source>
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<maven.compiler.target>23</maven.compiler.target>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<java.version>17</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>
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</project>

‎12-testing-rest-apis-with-postman/testing-rest-apis-with-postman/src/main/java/org/example/Controllers/ShoppingListController.java

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package org.example.Controllers;
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import org.example.Models.ShoppingListItem;
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import org.springframework.web.bind.annotation.*;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Represents a controller for the shopping list.
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*/
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@RestController
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public class ShoppingListController {
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/**
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* The shopping list.
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*/
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private List<ShoppingListItem> shoppingList = new ArrayList<>();
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/**
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* Gets all the items in the shopping list.
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*
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* @return All the items in the shopping list.
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*/
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@GetMapping
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public List<ShoppingListItem> getShoppingList() {
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return shoppingList;
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}
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/**
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* Gets a shopping list item by its id.
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*
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* @param id The id of the item.
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* @return The item with the specified id, or null if no item was found.
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*/
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@GetMapping("/{id}")
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public ShoppingListItem getShoppingListItemById(@PathVariable int id) {
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return shoppingList.stream()
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.filter(item -> item.getId() == id)
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.findFirst()
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.orElse(null);
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}
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/**
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* Adds a shopping list item to the shopping list.
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*
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* @param item The item to add.
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*/
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@PostMapping
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public void addShoppingListItem(@RequestBody ShoppingListItem item) {
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shoppingList.add(item);
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}
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/**
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* Updates a shopping list item in the shopping list.
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*
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* @param id The id of the item.
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* @param item The item to update.
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*/
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@PutMapping("/{id}")
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public void updateShoppingListItem(@PathVariable int id, @RequestBody ShoppingListItem item) {
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ShoppingListItem existingItem = getShoppingListItemById(id);
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if (existingItem != null) {
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existingItem.setTitle(item.getTitle());
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existingItem.setPrice(item.getPrice());
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existingItem.setQuantity(item.getQuantity());
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}
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}
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/**
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* Deletes a shopping list item from the shopping list.
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*
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* @param id The id of the item.
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*/
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@DeleteMapping("/{id}")
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public void deleteShoppingListItem(@PathVariable int id) {
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shoppingList.removeIf(item -> item.getId() == id);
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}
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}

‎12-testing-rest-apis-with-postman/testing-rest-apis-with-postman/src/main/java/org/example/Main.java

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