Added business logic and tests

pom.xml

@@ -7,6 +7,30 @@
 	<artifactId>spring-core-template</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
 
+
+	<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
+	<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>
+		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+
+
 	<properties>
 		<maven.compiler.source>1.8</maven.compiler.source>
 		<maven.compiler.target>1.8</maven.compiler.target>

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

@@ -1,9 +1,27 @@
 package com.epam.edu.spring.core.template;
 
+import com.epam.edu.spring.core.template.configuration.ColorFactory;
+import com.epam.edu.spring.core.template.configuration.MainConfiguration;
+import com.epam.edu.spring.core.template.repository.ArrayListItemRepository;
+import com.epam.edu.spring.core.template.repository.LinkedListItemRepository;
+import com.epam.edu.spring.core.template.service.SimpleItemService;
+import com.epam.edu.spring.core.template.validator.ItemValidator;
+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) throws Exception {
+		ApplicationContext ctx = new AnnotationConfigApplicationContext(MainConfiguration.class);
+
+		ItemValidator itemValidator = ctx.getBean(ItemValidator.class);
+		SimpleItemService itemServiceConstructor = (SimpleItemService) ctx.getBean("itemServiceConstructor");
+		SimpleItemService itemServiceSetter = (SimpleItemService) ctx.getBean("itemServiceSetter");
+
+		LinkedListItemRepository linkedListItemRepository = ctx.getBean(LinkedListItemRepository.class);
+		ArrayListItemRepository arrayListItemRepository = ctx.getBean(ArrayListItemRepository.class);
 
+		ColorFactory colorFactory = ctx.getBean(ColorFactory.class);
 	}
 
 }

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

@@ -0,0 +1,19 @@
+package com.epam.edu.spring.core.template.configuration;
+
+import com.epam.edu.spring.core.template.entity.Color;
+import org.springframework.context.annotation.Lazy;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+import java.util.Random;
+
+@Component
+@Lazy
+public class ColorFactory {
+
+    @Scope("prototype")
+    public Color getColor() {
+        return Color.values()[new Random().nextInt(Color.values().length)];
+    }
+
+}

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

@@ -1,4 +1,26 @@
 package com.epam.edu.spring.core.template.configuration;
 
-public class InitializerConfiguration {
+import com.epam.edu.spring.core.template.entity.Color;
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.context.annotation.Configuration;
+import java.util.Objects;
+
+@Configuration
+public class InitializerConfiguration implements FactoryBean<ColorFactory> {
+
+    @Override
+    public ColorFactory getObject() {
+        return new ColorFactory();
+    }
+
+    @Override
+    public Class<?> getObjectType() {
+        return ColorFactory.class;
+    }
+
+    public Color getColor() throws Exception {
+        return Objects.requireNonNull(getObject()).getColor();
+    }
+
 }
+

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

@@ -1,4 +1,38 @@
 package com.epam.edu.spring.core.template.configuration;
 
+import com.epam.edu.spring.core.template.repository.InjectRandomIntAnnotationBeanPostProcessor;
+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.Qualifier;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.context.annotation.PropertySource;
+
+@Configuration
+@PropertySource("classpath:application.properties")
+@Import({ InitializerConfiguration.class, RepositoryConfiguration.class, InjectRandomIntAnnotationBeanPostProcessor.class})
 public class MainConfiguration {
+
+    @Bean
+    public ItemValidator itemValidator() {
+        return new SimpleItemValidator();
+    }
+
+    @Bean
+    @Qualifier("itemServiceConstructor")
+    public SimpleItemService itemServiceConstructor(RepositoryConfiguration repositoryConfiguration) {
+        return new SimpleItemService(repositoryConfiguration.getItemRepository(),itemValidator());
+    }
+
+    @Bean
+    public SimpleItemService itemServiceSetter(RepositoryConfiguration repositoryConfiguration) {
+        SimpleItemService simpleItemService = new SimpleItemService();
+        simpleItemService.setItemRepository(repositoryConfiguration.getItemRepository());
+        simpleItemService.setItemValidator(itemValidator());
+        return simpleItemService;
+    }
+
 }
+

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

@@ -1,4 +1,38 @@
 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.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
 public class RepositoryConfiguration {
+
+    private ItemRepository itemRepository;
+
+    @Bean
+    public ArrayListItemRepository arrayListItemRepository() {
+        return new ArrayListItemRepository();
+    }
+
+    @Bean
+    public LinkedListItemRepository linkedListItemRepository() {
+        return new LinkedListItemRepository();
+    }
+
+    @Value("${item.repository.implementation}")
+    private void initConfiguration (String implementation) {
+        if (implementation.equals("linked")) {
+            itemRepository = linkedListItemRepository();
+        } else {
+            itemRepository = arrayListItemRepository();
+        }
+    }
+
+    public ItemRepository getItemRepository() {
+        return itemRepository;
+    }
+
 }

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

@@ -45,4 +45,5 @@ public Color getColor() {
     public void setColor(Color color) {
         this.color = color;
     }
+
 }

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

@@ -1,28 +1,42 @@
 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.context.annotation.PropertySource;
+import javax.annotation.PostConstruct;
+import java.util.ArrayList;
 
 /**
  * Репозиторий, основанный на классе ArrayList.
  * initialSequence должен браться из application.properties
  */
+
+@PropertySource("classpath:application.properties")
 public class ArrayListItemRepository extends AbstractRepository<Item> implements ItemRepository {
 
+
     @Override
     public Item getById(long id) {
-        return null;
+        return holder.stream().filter(o -> (o.getId() == id)).findFirst().orElse(null);
     }
 
     @Override
     public boolean createItem(Item item) {
-        return false;
+        item.setId(initialSequence);
+        holder.add(item);
+        initialSequence++;
+        return true;
     }
 
+    @Value("${initial.sequence}")
+    @Override
     void setInitialSequence(int val) {
-        //TODO
+        initialSequence = val;
     }
 
+    @PostConstruct
     void setHolder() {
-        //TODO
+        holder = new ArrayList<>();
     }
+
 }

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

@@ -0,0 +1,10 @@
+package com.epam.edu.spring.core.template.repository;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+public @interface InjectRandomInt {
+    int min();
+    int max();
+}

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

@@ -0,0 +1,39 @@
+package com.epam.edu.spring.core.template.repository;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+import org.springframework.context.annotation.Configuration;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Random;
+
+@Configuration
+public class InjectRandomIntAnnotationBeanPostProcessor implements BeanPostProcessor {
+
+    @Override
+    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+        Method[] declaredMethods = bean.getClass().getDeclaredMethods();
+        for (Method item : declaredMethods) {
+            InjectRandomInt annotation = item.getAnnotation(InjectRandomInt.class);
+            if (annotation != null) {
+                int min = annotation.min();
+                int max = annotation.max();
+                Random random = new Random();
+
+                try {
+                    item.invoke(bean, random.nextInt(max - min) + min);
+                } catch (IllegalAccessException | InvocationTargetException e) {
+                    e.printStackTrace();
+                }
+
+            }
+        }
+        return bean;
+    }
+
+    @Override
+    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
+        return bean;
+    }
+
+}

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

@@ -1,28 +1,39 @@
 package com.epam.edu.spring.core.template.repository;
 
 import com.epam.edu.spring.core.template.entity.Item;
+import org.springframework.stereotype.Component;
+import javax.annotation.PostConstruct;
+import java.util.LinkedList;
 
 /**
  * Репозиторий, основанный на классе LinkedList.
  * initialSequence должен случайно генерироваться из диапазона от 1 до 100
  */
+@Component
 public class LinkedListItemRepository extends AbstractRepository<Item> implements ItemRepository {
 
+
     @Override
     public Item getById(long id) {
-        return null;
+        return holder.stream().filter(o -> (o.getId() == id)).findFirst().orElse(null);
     }
 
     @Override
     public boolean createItem(Item item) {
-        return false;
+        item.setId(initialSequence);
+        holder.add(item);
+        initialSequence++;
+        return true;
     }
 
+    @InjectRandomInt(min = 1, max = 100)
     void setInitialSequence(int val) {
-        //TODO
+        initialSequence = val;
     }
 
+    @PostConstruct
     void setHolder() {
-        //TODO
+        holder = new LinkedList<>();
     }
+
 }

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

@@ -9,13 +9,39 @@ public class SimpleItemService implements ItemService {
     private ItemRepository itemRepository;
     private ItemValidator itemValidator;
 
+    public SimpleItemService() {
+
+    }
+
+    public SimpleItemService(ItemRepository itemRepository, ItemValidator itemValidator) {
+        this.itemRepository = itemRepository;
+        this.itemValidator = itemValidator;
+    }
+
     @Override
     public Item getById(long id) {
-        return null;
+        return itemRepository.getById(id);
     }
 
     @Override
     public boolean createItem(Item item) {
-        return false;
+        if (itemValidator.isItemValid(item)) {
+            return itemRepository.createItem(item);
+        } else {
+            return false;
+        }
+    }
+
+    public void setItemRepository(ItemRepository itemRepository) {
+        this.itemRepository = itemRepository;
+    }
+
+    public ItemRepository getItemRepository() {
+        return itemRepository;
     }
+
+    public void setItemValidator(ItemValidator itemValidator) {
+        this.itemValidator = itemValidator;
+    }
+
 }

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

@@ -6,6 +6,7 @@ public class SimpleItemValidator implements ItemValidator {
 
     @Override
     public boolean isItemValid(Item item) {
-        return false;
+        return true;
     }
+
 }