Added code for question 43888003.

Author: manish-in-java

43888003/pom.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>org.example</groupId>
+	<artifactId>stackoverflow</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>war</packaging>
+
+	<name>stackoverflow</name>
+	<description></description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.5.3.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-aop</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-rest</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-tomcat</artifactId>
+			<scope>provided</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>

43888003/src/main/java/org/example/Application.java

@@ -0,0 +1,13 @@
+package org.example;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application
+{
+  public static void main(String[] args)
+  {
+    SpringApplication.run(Application.class, args);
+  }
+}

43888003/src/main/java/org/example/ServletInitializer.java

@@ -0,0 +1,13 @@
+package org.example;
+
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.web.support.SpringBootServletInitializer;
+
+public class ServletInitializer extends SpringBootServletInitializer
+{
+  @Override
+  protected SpringApplicationBuilder configure(SpringApplicationBuilder application)
+  {
+    return application.sources(Application.class);
+  }
+}

43888003/src/main/java/org/example/api/ResourceNotFoundException.java

@@ -0,0 +1,5 @@
+package org.example.api;
+
+public class ResourceNotFoundException extends RuntimeException
+{
+}

43888003/src/main/java/org/example/api/ResourceNotFoundExceptionHandler.java

@@ -0,0 +1,16 @@
+package org.example.api;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ControllerAdvice
+public class ResourceNotFoundExceptionHandler
+{
+  @ExceptionHandler(ResourceNotFoundException.class)
+  @ResponseStatus(HttpStatus.NOT_FOUND)
+  public void handleResourceNotFound()
+  {
+  }
+}

43888003/src/main/java/org/example/data/DepartmentRepository.java

@@ -0,0 +1,7 @@
+package org.example.data;
+
+import org.example.domain.Department;
+
+public interface DepartmentRepository extends ModelRepository<Department>
+{
+}

43888003/src/main/java/org/example/data/EmployeeRepository.java

@@ -0,0 +1,7 @@
+package org.example.data;
+
+import org.example.domain.Employee;
+
+public interface EmployeeRepository extends ModelRepository<Employee>
+{
+}

43888003/src/main/java/org/example/data/InvalidRepositoryReturnValueAspect.java

@@ -0,0 +1,20 @@
+package org.example.data;
+
+import org.aspectj.lang.annotation.AfterReturning;
+import org.aspectj.lang.annotation.Aspect;
+import org.example.api.ResourceNotFoundException;
+import org.springframework.stereotype.Component;
+
+@Aspect
+@Component
+public class InvalidRepositoryReturnValueAspect
+{
+  @AfterReturning(pointcut = "execution(* org.example.data.*Repository+.findOne(..))", returning = "result")
+  public void intercept(final Object result)
+  {
+    if (result == null)
+    {
+      throw new ResourceNotFoundException();
+    }
+  }
+}

43888003/src/main/java/org/example/data/ModelRepository.java

@@ -0,0 +1,10 @@
+package org.example.data;
+
+import org.example.domain.Model;
+import org.springframework.data.repository.NoRepositoryBean;
+import org.springframework.data.repository.PagingAndSortingRepository;
+
+@NoRepositoryBean
+public interface ModelRepository<T extends Model> extends PagingAndSortingRepository<T, Long>
+{
+}

43888003/src/main/java/org/example/domain/Department.java

@@ -0,0 +1,21 @@
+package org.example.domain;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+
+@Entity
+public class Department extends Model
+{
+  @Column(length = 100, name = "name", nullable = false)
+  private String name;
+
+  public String getName()
+  {
+    return name;
+  }
+
+  public void setName(String name)
+  {
+    this.name = name;
+  }
+}