done

pom.xml

@@ -10,6 +10,60 @@
 	<properties>
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
+		<spring.version>5.2.1.RELEASE</spring.version>
+		<junit.jupiter.version>5.5.2</junit.jupiter.version>
 	</properties>
 
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-context</artifactId>
+			<version>${spring.version}</version>
+		</dependency>
+
+		<dependency>
+			<groupId>javax.annotation</groupId>
+			<artifactId>javax.annotation-api</artifactId>
+			<version>1.3.2</version>
+		</dependency>
+
+		<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-test</artifactId>
+			<version>${spring.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<version>3.22.0</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<version>2.1.1.RELEASE</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-params</artifactId>
+			<version>${junit.jupiter.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-autoconfigure</artifactId>
+			<version>2.1.1.RELEASE</version>
+			<scope>compile</scope>
+		</dependency>
+
+	</dependencies>
+
 </project>

src/main/java/com/epam/edu/spring/core/template/service/ItemService.java → src/main/java/com/epam/edu/spring/core/template/ItemService.java

@@ -1,4 +1,4 @@
-package com.epam.edu.spring.core.template.service;
+package com.epam.edu.spring.core.template;
 
 import com.epam.edu.spring.core.template.entity.Item;
 

src/main/java/com/epam/edu/spring/core/template/SimpleItemService.java

@@ -0,0 +1,43 @@
+package com.epam.edu.spring.core.template;
+
+import com.epam.edu.spring.core.template.entity.Item;
+import com.epam.edu.spring.core.template.repository.ItemRepository;
+import com.epam.edu.spring.core.template.validator.ItemValidator;
+import org.springframework.beans.factory.annotation.Autowired;
+
+public class SimpleItemService implements ItemService {
+
+    private ItemRepository itemRepository;
+    private ItemValidator itemValidator;
+    @Autowired
+    public SimpleItemService(ItemRepository itemRepository, ItemValidator itemValidator) {
+        this.itemRepository = itemRepository;
+        this.itemValidator = itemValidator;
+    }
+
+
+    public void setItemValidator(ItemValidator itemValidator) {
+        this.itemValidator = itemValidator;
+    }
+
+    public SimpleItemService(ItemRepository itemRepository) {
+        this.itemRepository = itemRepository;
+    }
+
+    public void setItemRepository(ItemRepository itemRepository) {
+        this.itemRepository = itemRepository;
+    }
+
+    @Override
+    public Item getById(long id) {
+        return itemRepository.getById(id);
+    }
+
+    @Override
+    public boolean createItem(Item item) {
+        if(itemValidator.isItemValid(item)) {
+            return itemRepository.createItem(item);
+        }
+        return false;
+    }
+}

src/main/java/com/epam/edu/spring/core/template/SpringCoreTemplate.java

@@ -1,9 +1,28 @@
 package com.epam.edu.spring.core.template;
 
+import com.epam.edu.spring.core.template.configuration.InitializerConfiguration;
+import com.epam.edu.spring.core.template.configuration.MainConfiguration;
+import com.epam.edu.spring.core.template.entity.Item;
+import com.epam.edu.spring.core.template.factory.ColorFactory;
+import com.epam.edu.spring.core.template.validator.SimpleItemValidator;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
 public class SpringCoreTemplate {
 
-	public static void main(String[] args) {
+	public static void main(String[] args)  {
+		ApplicationContext context = new AnnotationConfigApplicationContext(MainConfiguration.class);
+
+		ColorFactory colorFactory = context.getBean(ColorFactory.class);
+		System.out.println(colorFactory.getColor());
+		SimpleItemService simpleItemService = context.getBean(SimpleItemService.class);
+		simpleItemService.createItem(new Item(1, "itemOne", 22, colorFactory.getColor()));
+		System.out.println(simpleItemService.getById(1));
+
 
+		for (String beanName : context.getBeanDefinitionNames()) {
+			System.out.println(beanName);
+		}
 	}
 
 }

src/main/java/com/epam/edu/spring/core/template/configuration/InitializerConfiguration.java

@@ -1,4 +1,19 @@
 package com.epam.edu.spring.core.template.configuration;
 
+import com.epam.edu.spring.core.template.factory.ColorFactory;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.context.annotation.*;
+
+
+
+@ComponentScan
 public class InitializerConfiguration {
+
+    @Bean
+    @Lazy
+    @Scope(BeanDefinition.SCOPE_PROTOTYPE)
+    public ColorFactory colorFactory(){
+        return new ColorFactory();
+    }
+
 }

src/main/java/com/epam/edu/spring/core/template/configuration/MainConfiguration.java

@@ -1,4 +1,8 @@
 package com.epam.edu.spring.core.template.configuration;
 
+import org.springframework.context.annotation.Import;
+
+@Import({RepositoryConfiguration.class, InitializerConfiguration.class})
 public class MainConfiguration {
+
 }

src/main/java/com/epam/edu/spring/core/template/configuration/RepositoryConfiguration.java

@@ -1,4 +1,44 @@
 package com.epam.edu.spring.core.template.configuration;
 
+
+import com.epam.edu.spring.core.template.repository.ArrayListItemRepository;
+import com.epam.edu.spring.core.template.repository.ItemRepository;
+import com.epam.edu.spring.core.template.repository.LinkedListItemRepository;
+import com.epam.edu.spring.core.template.ItemService;
+import com.epam.edu.spring.core.template.SimpleItemService;
+import com.epam.edu.spring.core.template.validator.ItemValidator;
+import com.epam.edu.spring.core.template.validator.SimpleItemValidator;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+
+@Configuration
+@PropertySource("classpath:application.properties")
 public class RepositoryConfiguration {
+
+    @Value("${item.repository.implementation}")
+    String implementation;
+
+    @Bean
+    public ItemRepository itemRepository() {
+        return implementation.equals("array") ? arrayListItemRepository() : linkedListItemRepository();
+    }
+    @Bean
+    public ArrayListItemRepository arrayListItemRepository() {
+    return new ArrayListItemRepository();
+}
+    @Bean
+    public LinkedListItemRepository linkedListItemRepository() {
+    return new LinkedListItemRepository();
+}
+    @Bean
+    public ItemService itemService() {
+        return new SimpleItemService(itemRepository(), itemValidator());
+    }
+    @Bean
+    public ItemValidator itemValidator() {
+        return new SimpleItemValidator();
+    }
 }

src/main/java/com/epam/edu/spring/core/template/entity/Color.java

@@ -1,5 +1,6 @@
 package com.epam.edu.spring.core.template.entity;
 
 public enum Color {
+    YELLOW, BLUE, RED, ORANGE, WHITE, BLACK
 
 }

src/main/java/com/epam/edu/spring/core/template/entity/Item.java

@@ -45,4 +45,14 @@ public Color getColor() {
     public void setColor(Color color) {
         this.color = color;
     }
+
+    @Override
+    public String toString() {
+        return "Item{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", price=" + price +
+                ", color=" + color +
+                '}';
+    }
 }

src/main/java/com/epam/edu/spring/core/template/factory/ColorFactory.java

@@ -0,0 +1,30 @@
+package com.epam.edu.spring.core.template.factory;
+
+import com.epam.edu.spring.core.template.entity.Color;
+import org.springframework.beans.factory.FactoryBean;
+
+import java.util.Random;
+
+
+public class ColorFactory implements FactoryBean<Color> {
+
+    @Override
+    public Color getObject() {
+        Color[] colors = Color.values();
+        return colors[new Random().nextInt(colors.length)];
+    }
+
+    @Override
+    public Class<?> getObjectType() {
+        return Color.class;
+    }
+
+   public Color getColor()  {
+        return getObject();
+   }
+
+    @Override
+    public boolean isSingleton() {
+        return false;
+    }
+}

src/main/java/com/epam/edu/spring/core/template/repository/ArrayListItemRepository.java

@@ -1,28 +1,52 @@
 package com.epam.edu.spring.core.template.repository;
 
 import com.epam.edu.spring.core.template.entity.Item;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Repository;
+
+import javax.annotation.PostConstruct;
+import java.util.ArrayList;
 
 /**
  * Репозиторий, основанный на классе ArrayList.
  * initialSequence должен браться из application.properties
  */
+@Repository
 public class ArrayListItemRepository extends AbstractRepository<Item> implements ItemRepository {
 
+
     @Override
     public Item getById(long id) {
+        if(!holder.isEmpty()) {
+        for(Item item : holder) {
+            if(item.getId() == id) {
+                return item;
+               }
+            }
+        }
         return null;
     }
 
     @Override
     public boolean createItem(Item item) {
-        return false;
-    }
+        if(!(holder.isEmpty())) {
+                for (Item el : holder) {
+                    if (el.getId() == item.getId()) {
+                        return false;
+                    }
+                }
+                }
+            holder.add(item);
+            return true;
 
+        }
+
+    @Value("${initial.sequence}")
     void setInitialSequence(int val) {
-        //TODO
+        initialSequence = val;
     }
-
+   @PostConstruct
     void setHolder() {
-        //TODO
+        this.holder = new ArrayList<>();
     }
 }

src/main/java/com/epam/edu/spring/core/template/repository/LinkedListItemRepository.java

@@ -1,28 +1,47 @@
 package com.epam.edu.spring.core.template.repository;
 
 import com.epam.edu.spring.core.template.entity.Item;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Repository;
+import javax.annotation.PostConstruct;
+import java.util.LinkedList;
+
 
 /**
  * Репозиторий, основанный на классе LinkedList.
  * initialSequence должен случайно генерироваться из диапазона от 1 до 100
  */
+@Repository
 public class LinkedListItemRepository extends AbstractRepository<Item> implements ItemRepository {
 
     @Override
     public Item getById(long id) {
+        for(Item item : holder) {
+            if(item.getId() == id) {
+                return item;
+            }
+        }
         return null;
     }
-
     @Override
     public boolean createItem(Item item) {
-        return false;
+        if(!holder.isEmpty()) {
+            for(Item createItem : holder) {
+                if(createItem.getId() == item.getId()) {
+                    return false;
+                }
+            }
+        }
+        holder.add(item);
+        return true;
     }
-
-    void setInitialSequence(int val) {
-        //TODO
+    @Value(value = "#{ T(java.lang.Math).random() * 100 + 1 }")
+   public void setInitialSequence(int val) {
+        this.initialSequence = val;
     }
 
+    @PostConstruct
     void setHolder() {
-        //TODO
+       this.holder = new LinkedList<>();
     }
 }