Feature

pom.xml

@@ -11,5 +11,25 @@
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>
 	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-context</artifactId>
+			<version>5.2.1.RELEASE</version>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-test</artifactId>
+			<version>5.2.1.RELEASE</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
 
 </project>

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

@@ -1,9 +1,34 @@
 package com.epam.edu.spring.core.template;
 
+import com.epam.edu.spring.core.template.configuration.MainConfiguration;
+import com.epam.edu.spring.core.template.entity.Color;
+import com.epam.edu.spring.core.template.entity.Item;
+import com.epam.edu.spring.core.template.repository.ArrayListItemRepository;
+import com.epam.edu.spring.core.template.repository.LinkedListItemRepository;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+
 public class SpringCoreTemplate {
 
 	public static void main(String[] args) {
+		System.out.println("hello word");
 
-	}
+		AnnotationConfigApplicationContext context
+				= new AnnotationConfigApplicationContext(MainConfiguration.class);
+
+		//ArrayListItemRepository a = (ArrayListItemRepository) context.getBean("itemRepository");
+		LinkedListItemRepository l = (LinkedListItemRepository) context.getBean("itemRepository");
+
+		Item item = new Item(1, "Pasha", 20000000, Color.GREEN);
+		l.createItem(item);
+		Item pasha = l.getById(1);
 
+		System.out.println(pasha);
+
+		Item item2 = new Item(2, "Masha", 10000000, Color.YELLOW);
+
+		context.close();
+
+	}
 }

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

@@ -1,4 +1,20 @@
 package com.epam.edu.spring.core.template.configuration;
 
+
+import com.epam.edu.spring.core.template.entity.ColorFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.context.annotation.Scope;
+
+@Configuration
 public class InitializerConfiguration {
+
+    @Bean
+    @Lazy
+    @Scope("prototype")
+    public ColorFactory colorFactory() {
+        return new ColorFactory();
+    }
+
 }

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

@@ -1,4 +1,43 @@
 package com.epam.edu.spring.core.template.configuration;
 
+import com.epam.edu.spring.core.template.repository.ItemRepository;
+import com.epam.edu.spring.core.template.service.ItemService;
+import com.epam.edu.spring.core.template.service.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.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.PropertySource;
+
+@PropertySource("application.properties")
+@Import({RepositoryConfiguration.class, InitializerConfiguration.class})
 public class MainConfiguration {
+
+    @Value("${item.repository.implementation}")
+    String implementation;
+
+    @Autowired
+    RepositoryConfiguration repositoryConfiguration;
+    @Autowired
+    InitializerConfiguration initializerConfiguration;
+
+    @Bean
+    public ItemRepository itemRepository() {
+        if (implementation.equals("linked")) {
+            return repositoryConfiguration.linkedListItemRepository();
+        }
+        return repositoryConfiguration.arrayListItemRepository();
+    }
+
+    @Bean
+    public ItemValidator itemValidator(){
+        return new SimpleItemValidator();
+    }
+
+    @Bean
+    public ItemService itemService(){
+        return new SimpleItemService(itemRepository(), itemValidator());
+    }
 }

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

@@ -1,4 +1,24 @@
 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 org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+
+@Configuration
 public class RepositoryConfiguration {
+
+    @Bean
+    public ItemRepository arrayListItemRepository() {
+        return new ArrayListItemRepository(new ArrayList<>());
+    }
+    @Bean
+    public ItemRepository linkedListItemRepository() {
+        return new LinkedListItemRepository(new LinkedList<>());
+    }
+
 }

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

@@ -1,5 +1,12 @@
 package com.epam.edu.spring.core.template.entity;
 
 public enum Color {
+    RED,
+    BLUE,
+    GREEN,
+    BROWN,
+    YELLOW,
+    PINK;
+
 
 }

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

@@ -0,0 +1,28 @@
+package com.epam.edu.spring.core.template.entity;
+
+import org.springframework.beans.factory.FactoryBean;
+import java.util.Random;
+
+
+public class ColorFactory implements FactoryBean<Color> {
+
+    @Override
+    public Color getObject() throws Exception {
+        return Color.values()[new Random().nextInt(Color.values().length)];
+    }
+
+    @Override
+    public Class<?> getObjectType() {
+        return ColorFactory.class;
+    }
+
+    @Override
+    public boolean isSingleton() {
+        return false;
+    }
+
+    public Color getColor(){
+        return Color.values()[new Random().nextInt(Color.values().length)];
+    }
+
+}

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/repository/AbstractRepository.java

@@ -7,6 +7,7 @@
  * ID сущности генерируется, исходя из initialSequence
  * @param <T>
  */
+
 public abstract class AbstractRepository<T> {
 
     protected long initialSequence = 0;
@@ -15,6 +16,10 @@ public abstract class AbstractRepository<T> {
 
     abstract void setInitialSequence(int val);
 
+    public long getInitialSequence() {
+        return initialSequence;
+    }
+
     abstract void setHolder();
 
 }

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

@@ -1,28 +1,51 @@
 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 java.util.ArrayList;
 
 /**
  * Репозиторий, основанный на классе ArrayList.
  * initialSequence должен браться из application.properties
  */
 public class ArrayListItemRepository extends AbstractRepository<Item> implements ItemRepository {
 
+   // private final ArrayList<Item> listItem;
+   @Value("${initial.sequence}")
+   public long initialSequence;
+
+    public ArrayListItemRepository(ArrayList<Item> listItem) {
+        this.holder = listItem;
+    }
+
     @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;
+        for (Item itemInList : holder) {
+            if (itemInList.getId() == item.getId()) {
+                return false;
+            }
+        }
+        holder.add(item);
+        return true;
     }
 
     void setInitialSequence(int val) {
-        //TODO
+        this.initialSequence=val;
     }
 
+
     void setHolder() {
-        //TODO
+        this.holder = new ArrayList<>();
     }
 }

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

@@ -2,27 +2,51 @@
 
 import com.epam.edu.spring.core.template.entity.Item;
 
+import java.util.LinkedList;
+import java.util.Random;
+
 /**
  * Репозиторий, основанный на классе LinkedList.
  * initialSequence должен случайно генерироваться из диапазона от 1 до 100
  */
 public class LinkedListItemRepository extends AbstractRepository<Item> implements ItemRepository {
+   long initialSequence = new Random().nextInt(100);
+
+    public LinkedListItemRepository(LinkedList<Item> listItem) {
+        this.holder = listItem;
+    }
 
     @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;
+        for (Item itemInList : holder) {
+            if (itemInList.getId() == item.getId()) {
+                return false;
+            }
+        }
+        holder.add(item);
+        return true;
     }
 
     void setInitialSequence(int val) {
-        //TODO
+        this.initialSequence = val;
+    }
+
+    @Override
+    public long getInitialSequence() {
+        return initialSequence;
     }
 
     void setHolder() {
-        //TODO
+        this.holder = new LinkedList<>();
     }
 }

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

@@ -1,20 +1,37 @@
 package com.epam.edu.spring.core.template.service;
 
 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;
+import org.springframework.stereotype.Component;
 
+@Component
 public class SimpleItemService implements ItemService {
 
-    private ItemService itemService;
     private ItemValidator itemValidator;
+    private ItemRepository repository;
+
+    @Autowired
+    public SimpleItemService(ItemRepository repository, ItemValidator validator){
+        this.repository=repository;
+        this.itemValidator=validator;
+    }
+
+    @Autowired
+    public void setItemValidator(ItemValidator itemValidator) {
+        this.itemValidator = itemValidator;
+    }
 
     @Override
     public Item getById(long id) {
-        return null;
+        return repository.getById(id);
     }
 
     @Override
     public boolean createItem(Item item) {
+        if (itemValidator.isItemValid(item))
+           return repository.createItem(item);
         return false;
     }
 }

src/main/java/com/epam/edu/spring/core/template/validator/SimpleItemValidator.java

@@ -4,8 +4,10 @@
 
 public class SimpleItemValidator implements ItemValidator {
 
+    //допустим нельзя создовать имена с пробелами
+    // и price имеет ограничения в 5 000 000
     @Override
     public boolean isItemValid(Item item) {
-        return false;
+        return !item.getName().contains(" ") && !(item.getPrice() > 50000000);
     }
 }

src/main/resources/application.properties

@@ -1,2 +1,2 @@
 initial.sequence=42
-item.repository.implementation=
+item.repository.implementation=linked