BAEL-5394 - Unique Field in MongoDB Document in Spring Data (eugenp#12384)

* BAEL-5370 - MongoDB Composite Key

First Draft.

* removing comments

* BAEL-5370

Test could fail if ran in a different order:
givenCompositeId_whenSearchingByIdObject_thenFound

* BAEL-5370

removing compound index related stuff

* removing first insert from assertThrows

* first draft

* removing Customer2

Author: ulisseslima

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/SpringBootUniqueFieldApplication.java

@@ -0,0 +1,15 @@
+package com.baeldung.boot.unique.field;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.PropertySource;
+import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
+
+@SpringBootApplication
+@PropertySource("classpath:boot.unique.field/app.properties")
+@EnableMongoRepositories(basePackages = { "com.baeldung.boot.unique.field" })
+public class SpringBootUniqueFieldApplication {
+    public static void main(String... args) {
+        SpringApplication.run(SpringBootUniqueFieldApplication.class, args);
+    }
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/dao/AssetRepository.java

@@ -0,0 +1,8 @@
+package com.baeldung.boot.unique.field.dao;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+import com.baeldung.boot.unique.field.data.Asset;
+
+public interface AssetRepository extends MongoRepository<Asset, String> {
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/dao/CompanyRepository.java

@@ -0,0 +1,11 @@
+package com.baeldung.boot.unique.field.dao;
+
+import java.util.Optional;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+import com.baeldung.boot.unique.field.data.Company;
+
+public interface CompanyRepository extends MongoRepository<Company, String> {
+    Optional<Company> findByEmail(String email);
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/dao/CustomerRepository.java

@@ -0,0 +1,11 @@
+package com.baeldung.boot.unique.field.dao;
+
+import java.util.Optional;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+import com.baeldung.boot.unique.field.data.Customer;
+
+public interface CustomerRepository extends MongoRepository<Customer, String> {
+    Optional<Customer> findByStoreIdAndNumber(Long storeId, Long number);
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/dao/SaleRepository.java

@@ -0,0 +1,12 @@
+package com.baeldung.boot.unique.field.dao;
+
+import java.util.Optional;
+
+import org.springframework.data.mongodb.repository.MongoRepository;
+
+import com.baeldung.boot.unique.field.data.Sale;
+import com.baeldung.boot.unique.field.data.SaleId;
+
+public interface SaleRepository extends MongoRepository<Sale, String> {
+    Optional<Sale> findBySaleId(SaleId id);
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/data/Asset.java

@@ -0,0 +1,29 @@
+package com.baeldung.boot.unique.field.data;
+
+import org.springframework.data.mongodb.core.index.Indexed;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+public class Asset {
+    @Indexed(unique = true)
+    private String name;
+
+    @Indexed(unique = true)
+    private Integer number;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Integer getNumber() {
+        return number;
+    }
+
+    public void setNumber(Integer number) {
+        this.number = number;
+    }
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/data/Company.java

@@ -0,0 +1,40 @@
+package com.baeldung.boot.unique.field.data;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.index.Indexed;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+public class Company {
+    @Id
+    private String id;
+
+    private String name;
+
+    @Indexed(unique = true)
+    private String email;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/data/Customer.java

@@ -0,0 +1,57 @@
+package com.baeldung.boot.unique.field.data;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.mongodb.core.index.CompoundIndex;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+@CompoundIndex(name = "customer_idx", def = "{ 'storeId': 1, 'number': 1 }", unique = true)
+public class Customer {
+    @Id
+    private String id;
+
+    private Long storeId;
+
+    private Long number;
+
+    private String name;
+
+    public Customer() {
+    }
+
+    public Customer(String name) {
+        this.name = name;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public Long getStoreId() {
+        return storeId;
+    }
+
+    public void setStoreId(Long storeId) {
+        this.storeId = storeId;
+    }
+
+    public Long getNumber() {
+        return number;
+    }
+
+    public void setNumber(Long number) {
+        this.number = number;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/data/Sale.java

@@ -0,0 +1,36 @@
+package com.baeldung.boot.unique.field.data;
+
+import org.springframework.data.mongodb.core.index.Indexed;
+import org.springframework.data.mongodb.core.mapping.Document;
+
+@Document
+public class Sale {
+    @Indexed(unique = true)
+    private SaleId saleId;
+
+    private Double value;
+
+    public Sale() {
+    }
+
+    public Sale(SaleId saleId) {
+        super();
+        this.saleId = saleId;
+    }
+
+    public SaleId getSaleId() {
+        return saleId;
+    }
+
+    public void setSaleId(SaleId saleId) {
+        this.saleId = saleId;
+    }
+
+    public Double getValue() {
+        return value;
+    }
+
+    public void setValue(Double value) {
+        this.value = value;
+    }
+}

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/boot/unique/field/data/SaleId.java

@@ -0,0 +1,22 @@
+package com.baeldung.boot.unique.field.data;
+
+public class SaleId {
+    private Long item;
+    private String date;
+
+    public Long getItem() {
+        return item;
+    }
+
+    public void setItem(Long item) {
+        this.item = item;
+    }
+
+    public String getDate() {
+        return date;
+    }
+
+    public void setDate(String date) {
+        this.date = date;
+    }
+}