BAEL-9511 - MapStruct Null Handling

Author: maenolis

mapstruct-3/src/main/java/com/baeldung/dto/AncestorDto.java

@@ -0,0 +1,43 @@
+package com.baeldung.dto;
+
+public class AncestorDto {
+
+    private String firstName;
+
+    private Double weight;
+
+    private String vatNumber;
+
+    public AncestorDto() {
+    }
+
+    public AncestorDto(String firstName, Double weight, String vatNumber) {
+        this.firstName = firstName;
+        this.weight = weight;
+        this.vatNumber = vatNumber;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public Double getWeight() {
+        return weight;
+    }
+
+    public void setWeight(Double weight) {
+        this.weight = weight;
+    }
+
+    public String getVatNumber() {
+        return vatNumber;
+    }
+
+    public void setVatNumber(String vatNumber) {
+        this.vatNumber = vatNumber;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/dto/OrderDto.java

@@ -0,0 +1,45 @@
+package com.baeldung.dto;
+
+import java.util.List;
+
+public class OrderDto {
+
+    private String transactionId;
+
+    private List<String> orderItemIds;
+
+    private PaymentDto paymentDto;
+
+    public OrderDto(String transactionId, List<String> orderItemIds, PaymentDto paymentDto) {
+        this.transactionId = transactionId;
+        this.orderItemIds = orderItemIds;
+        this.paymentDto = paymentDto;
+    }
+
+    public OrderDto() {
+    }
+
+    public String getTransactionId() {
+        return transactionId;
+    }
+
+    public void setTransactionId(String transactionId) {
+        this.transactionId = transactionId;
+    }
+
+    public List<String> getOrderItemIds() {
+        return orderItemIds;
+    }
+
+    public void setOrderItemIds(List<String> orderItemIds) {
+        this.orderItemIds = orderItemIds;
+    }
+
+    public PaymentDto getPaymentDto() {
+        return paymentDto;
+    }
+
+    public void setPaymentDto(PaymentDto paymentDto) {
+        this.paymentDto = paymentDto;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/dto/PaymentDto.java

@@ -0,0 +1,21 @@
+package com.baeldung.dto;
+
+public class PaymentDto {
+
+    private String type;
+
+    public PaymentDto() {
+    }
+
+    public PaymentDto(String type) {
+        this.type = type;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/entity/GrandDad.java

@@ -0,0 +1,43 @@
+package com.baeldung.entity;
+
+public class GrandDad {
+
+    private Identity identity;
+
+    private String weight;
+
+    private String vatNumber;
+
+    public GrandDad() {
+    }
+
+    public GrandDad(Identity identity, String weight, String vatNumber) {
+        this.identity = identity;
+        this.weight = weight;
+        this.vatNumber = vatNumber;
+    }
+
+    public Identity getIdentity() {
+        return identity;
+    }
+
+    public void setIdentity(Identity identity) {
+        this.identity = identity;
+    }
+
+    public String getWeight() {
+        return weight;
+    }
+
+    public void setWeight(String weight) {
+        this.weight = weight;
+    }
+
+    public String getVatNumber() {
+        return vatNumber;
+    }
+
+    public void setVatNumber(String vatNumber) {
+        this.vatNumber = vatNumber;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/entity/Identity.java

@@ -0,0 +1,32 @@
+package com.baeldung.entity;
+
+public class Identity {
+
+    private String name;
+    private String surname;
+
+    public Identity() {
+    }
+
+    public Identity(String name, String surname) {
+        this.name = name;
+        this.surname = surname;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getSurname() {
+        return surname;
+    }
+
+    public void setSurname(String surname) {
+        this.surname = surname;
+    }
+
+}

mapstruct-3/src/main/java/com/baeldung/entity/Order.java

@@ -0,0 +1,45 @@
+package com.baeldung.entity;
+
+import java.util.List;
+
+public class Order {
+
+    private String transactionId;
+
+    private List<String> orderItemIds;
+
+    private Payment payment;
+
+    public Order(String transactionId, List<String> orderItemIds, Payment payment) {
+        this.transactionId = transactionId;
+        this.orderItemIds = orderItemIds;
+        this.payment = payment;
+    }
+
+    public Order() {
+    }
+
+    public String getTransactionId() {
+        return transactionId;
+    }
+
+    public void setTransactionId(String transactionId) {
+        this.transactionId = transactionId;
+    }
+
+    public List<String> getOrderItemIds() {
+        return orderItemIds;
+    }
+
+    public void setOrderItemIds(List<String> orderItemIds) {
+        this.orderItemIds = orderItemIds;
+    }
+
+    public Payment getPayment() {
+        return payment;
+    }
+
+    public void setPayment(Payment payment) {
+        this.payment = payment;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/entity/Payment.java

@@ -0,0 +1,21 @@
+package com.baeldung.entity;
+
+public class Payment {
+
+    private String type;
+
+    public Payment() {
+    }
+
+    public Payment(String type) {
+        this.type = type;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+}

mapstruct-3/src/main/java/com/baeldung/factory/PaymentDtoFactory.java

@@ -0,0 +1,22 @@
+package com.baeldung.factory;
+
+import com.baeldung.dto.PaymentDto;
+
+public class PaymentDtoFactory {
+
+    public static String CASH = "Cash";
+    public static String CARD = "Card";
+
+    public static PaymentDto cash() {
+        return new PaymentDto(CASH);
+    }
+
+    public static PaymentDto card() {
+        return new PaymentDto(CARD);
+    }
+
+    public static PaymentDto defaultPaymentDto() {
+        return cash();
+    }
+
+}

mapstruct-3/src/main/java/com/baeldung/mapper/AncestorMapper.java

@@ -0,0 +1,15 @@
+package com.baeldung.mapper;
+
+import com.baeldung.dto.AncestorDto;
+import com.baeldung.entity.GrandDad;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+
+@Mapper
+public interface AncestorMapper {
+
+    @Mapping(source = "identity.name", target = "firstName")
+    @Mapping(source = "weight", target = "weight", numberFormat = "###.#")
+    AncestorDto toDto(GrandDad grandDad);
+
+}

mapstruct-3/src/main/java/com/baeldung/mapper/MediaMapper.java

@@ -1,9 +1,8 @@
 package com.baeldung.mapper;
 
-import org.mapstruct.Mapper;
-
 import com.baeldung.dto.MediaDto;
 import com.baeldung.entity.Media;
+import org.mapstruct.Mapper;
 
 @Mapper
 public interface MediaMapper {