added persistence

mapstruct/pom.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0"?>
+<project
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+	xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+	<modelVersion>4.0.0</modelVersion>
+	<artifactId>mapstruct</artifactId>
+	<name>mapstruct</name>
+	<groupId>com.baeldung</groupId>
+	<version>1.0</version>
+	<packaging>jar</packaging>
+
+	<properties>
+		<org.mapstruct.version>1.0.0.Final</org.mapstruct.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct-jdk8</artifactId>
+			<version>${org.mapstruct.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.12</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<finalName>mapstruct</finalName>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.5.1</version>
+				<configuration>
+					<source>1.8</source>
+					<target>1.8</target>
+					<annotationProcessorPaths>
+						<path>
+							<groupId>org.mapstruct</groupId>
+							<artifactId>mapstruct-processor</artifactId>
+							<version>${org.mapstruct.version}</version>
+						</path>
+					</annotationProcessorPaths>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+</project> 

mapstruct/src/main/java/org/baeldung/dto/EmployeeDTO.java

@@ -0,0 +1,42 @@
+package org.baeldung.dto;
+
+public class EmployeeDTO {
+
+	private int employeeId;
+	private String employeeName;
+	private int divisionId;
+	private String divisionName;
+
+	public int getEmployeeId() {
+		return employeeId;
+	}
+
+	public void setEmployeeId(int employeeId) {
+		this.employeeId = employeeId;
+	}
+
+	public String getEmployeeName() {
+		return employeeName;
+	}
+
+	public void setEmployeeName(String employeeName) {
+		this.employeeName = employeeName;
+	}
+
+	public int getDivisionId() {
+		return divisionId;
+	}
+
+	public void setDivisionId(int divisionId) {
+		this.divisionId = divisionId;
+	}
+
+	public String getDivisionName() {
+		return divisionName;
+	}
+
+	public void setDivisionName(String divisionName) {
+		this.divisionName = divisionName;
+	}
+
+}

mapstruct/src/main/java/org/baeldung/dto/SimpleSource.java

@@ -0,0 +1,24 @@
+package org.baeldung.dto;
+
+public class SimpleSource {
+
+	private String name;
+	private String description;
+	
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getDescription() {
+		return description;
+	}
+
+	public void setDescription(String description) {
+		this.description = description;
+	}
+	
+}

mapstruct/src/main/java/org/baeldung/entity/Division.java

@@ -0,0 +1,33 @@
+package org.baeldung.entity;
+
+public class Division {
+
+	public Division() {
+	}
+
+	public Division(int id, String name) {
+		super();
+		this.id = id;
+		this.name = name;
+	}
+
+	private int id;
+	private String name;
+
+	public int getId() {
+		return id;
+	}
+
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+}

mapstruct/src/main/java/org/baeldung/entity/Employee.java

@@ -0,0 +1,33 @@
+package org.baeldung.entity;
+
+public class Employee {
+
+	private int id;
+	private String name;
+	private Division division;
+
+	public int getId() {
+		return id;
+	}
+
+	public void setId(int id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public Division getDivision() {
+		return division;
+	}
+
+	public void setDivision(Division division) {
+		this.division = division;
+	}
+
+}

mapstruct/src/main/java/org/baeldung/entity/SimpleDestination.java

@@ -0,0 +1,24 @@
+package org.baeldung.entity;
+
+public class SimpleDestination {
+
+	private String name;
+	private String description;
+	
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public String getDescription() {
+		return description;
+	}
+
+	public void setDescription(String description) {
+		this.description = description;
+	}
+
+}

mapstruct/src/main/java/org/baeldung/mapper/EmployeeMapper.java

@@ -0,0 +1,27 @@
+package org.baeldung.mapper;
+
+import org.baeldung.dto.EmployeeDTO;
+import org.baeldung.entity.Employee;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+import org.mapstruct.Mappings;
+
+@Mapper
+public interface EmployeeMapper {
+
+	@Mappings({
+		@Mapping(target="divisionId",source="entity.division.id"),
+		@Mapping(target="divisionName",source="entity.division.name"),
+		@Mapping(target="employeeId",source="entity.id"),
+		@Mapping(target="employeeName",source="entity.name")
+	})
+	EmployeeDTO employeeToEmployeeDTO(Employee entity);
+	
+	@Mappings({
+		@Mapping(target="id",source="dto.employeeId"),
+		@Mapping(target="name",source="dto.employeeName"),
+		@Mapping(target="division",expression="java(new org.baeldung.entity.Division(dto.getDivisionId(),dto.getDivisionName()))")
+	})
+	Employee employeeDTOtoEmployee(EmployeeDTO dto);
+	
+}

mapstruct/src/main/java/org/baeldung/mapper/SimpleSourceDestinationMapper.java

@@ -0,0 +1,13 @@
+package org.baeldung.mapper;
+
+import org.baeldung.dto.SimpleSource;
+import org.baeldung.entity.SimpleDestination;
+import org.mapstruct.Mapper;
+
+@Mapper
+public interface SimpleSourceDestinationMapper {
+
+	SimpleDestination sourceToDestination(SimpleSource source);
+    SimpleSource destinationToSource(SimpleDestination destination);
+	
+}

mapstruct/src/main/java/org/baeldung/mapper/SimpleSourceDestinationSpringMapper.java

@@ -0,0 +1,13 @@
+package org.baeldung.mapper;
+
+import org.baeldung.dto.SimpleSource;
+import org.baeldung.entity.SimpleDestination;
+import org.mapstruct.Mapper;
+
+@Mapper(componentModel="spring")
+public interface SimpleSourceDestinationSpringMapper {
+
+	SimpleDestination sourceToDestination(SimpleSource source);
+    SimpleSource destinationToSource(SimpleDestination destination);
+	
+}

mapstruct/src/test/java/org/baeldung/mapper/EmployeeMapperTest.java

@@ -0,0 +1,48 @@
+package org.baeldung.mapper;
+
+import static org.junit.Assert.*;
+
+import org.baeldung.dto.EmployeeDTO;
+import org.baeldung.entity.Division;
+import org.baeldung.entity.Employee;
+import org.junit.Test;
+import org.mapstruct.factory.Mappers;
+
+public class EmployeeMapperTest {
+	
+	@Test
+	public void givenEmployeeDTOtoEmployee_whenMaps_thenCorrect(){
+		EmployeeMapper mapper  = Mappers.getMapper(EmployeeMapper.class);
+		
+		EmployeeDTO dto = new EmployeeDTO();
+		dto.setDivisionId(1);
+		dto.setDivisionName("IT Division");
+		dto.setEmployeeId(1);
+		dto.setEmployeeName("John");
+		
+		Employee entity = mapper.employeeDTOtoEmployee(dto);
+		
+		assertEquals(dto.getDivisionId(), entity.getDivision().getId());
+		assertEquals(dto.getDivisionName(), entity.getDivision().getName());
+		assertEquals(dto.getEmployeeId(),entity.getId());
+		assertEquals(dto.getEmployeeName(),entity.getName());
+	}
+	
+	@Test
+	public void givenEmployeetoEmployeeDTO_whenMaps_thenCorrect(){
+		EmployeeMapper mapper  = Mappers.getMapper(EmployeeMapper.class);
+		
+		Employee entity = new Employee();
+		entity.setDivision(new Division(1,"IT Division"));
+		entity.setId(1);
+		entity.setName("John");
+		
+		EmployeeDTO dto = mapper.employeeToEmployeeDTO(entity);
+		
+		assertEquals(dto.getDivisionId(), entity.getDivision().getId());
+		assertEquals(dto.getDivisionName(), entity.getDivision().getName());
+		assertEquals(dto.getEmployeeId(),entity.getId());
+		assertEquals(dto.getEmployeeName(),entity.getName());
+	}
+	
+}

mapstruct/src/test/java/org/baeldung/mapper/SimpleSourceDestinationMapperTest.java

@@ -0,0 +1,44 @@
+package org.baeldung.mapper;
+
+import static org.junit.Assert.*;
+
+import org.baeldung.dto.SimpleSource;
+import org.baeldung.entity.SimpleDestination;
+import org.junit.Test;
+import org.mapstruct.factory.Mappers;
+
+public class SimpleSourceDestinationMapperTest {
+
+	@Test
+	public void givenSimpleSourceToSimpleDestination_whenMaps_thenCorrect() {
+		SimpleSourceDestinationMapper simpleSourceDestinationMapper = Mappers
+				.getMapper(SimpleSourceDestinationMapper.class);
+		
+		SimpleSource simpleSource = new SimpleSource();
+		simpleSource.setName("SourceName");
+		simpleSource.setDescription("SourceDescription");
+		
+		SimpleDestination destination = 
+				simpleSourceDestinationMapper.sourceToDestination(simpleSource);
+		
+		assertEquals(simpleSource.getName(), destination.getName());
+		assertEquals(simpleSource.getDescription(), destination.getDescription());
+	}
+	
+	@Test
+	public void givenSimpleDestinationToSourceDestination_whenMaps_thenCorrect() {
+		SimpleSourceDestinationMapper simpleSourceDestinationMapper = Mappers
+				.getMapper(SimpleSourceDestinationMapper.class);
+		
+		SimpleDestination destination = new SimpleDestination();
+		destination.setName("DestinationName");
+		destination.setDescription("DestinationDescription");
+		
+		SimpleSource source = 
+				simpleSourceDestinationMapper.destinationToSource(destination);
+		
+		assertEquals(destination.getName(), source.getName());
+		assertEquals(destination.getDescription(), source.getDescription());
+	}
+
+}