BAEL-6852: Can @Transactional and @Async work together? (#16126)

* adding tests and repo classes

* wrapping up logic]

* removing test

* removing sql files

* changing to throw exception on optional]

* introducing property in pom

persistence-modules/spring-boot-persistence-4/pom.xml

@@ -60,6 +60,11 @@
             <version>${lombok.version}</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-tx</artifactId>
+            <version>${spring.tx.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -84,6 +89,7 @@
         <modelmapper.version>3.2.0</modelmapper.version>
         <commons-codec.version>1.16.1</commons-codec.version>
         <lombok.version>1.18.30</lombok.version>
+        <spring.tx.version>6.1.4</spring.tx.version>
     </properties>
 
 </project>

persistence-modules/spring-boot-persistence-4/src/main/java/com/baeldung/transactionalandasync/Account.java

@@ -0,0 +1,23 @@
+package com.baeldung.transactionalandasync;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.math.BigDecimal;
+
+@Entity
+@AllArgsConstructor
+@NoArgsConstructor
+@EqualsAndHashCode(of = {"id"})
+@Table(name = "account")
+@Data
+public class Account {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+
+    @Column(name = "balance")
+    private BigDecimal balance;
+}

persistence-modules/spring-boot-persistence-4/src/main/java/com/baeldung/transactionalandasync/AccountRepository.java

@@ -0,0 +1,6 @@
+package com.baeldung.transactionalandasync;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface AccountRepository extends JpaRepository<Account, Long> {
+}

persistence-modules/spring-boot-persistence-4/src/main/java/com/baeldung/transactionalandasync/AccountService.java

@@ -0,0 +1,41 @@
+package com.baeldung.transactionalandasync;
+
+import jakarta.transaction.Transactional;
+import lombok.AllArgsConstructor;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+
+import java.math.BigDecimal;
+
+@Service
+@AllArgsConstructor
+@Transactional
+public class AccountService {
+
+    private final AccountRepository accountRepository;
+
+    @Async
+    public void transferAsync(Long depositorId, Long favoredId, BigDecimal amount) {
+        transfer(depositorId, favoredId, amount);
+
+        printReceipt();
+    }
+
+    @Transactional
+    public void transfer(Long depositorId, Long favoredId, BigDecimal amount) {
+        Account depositorAccount = accountRepository.findById(depositorId)
+                .orElseThrow(IllegalArgumentException::new);
+        Account favoredAccount = accountRepository.findById(favoredId)
+                .orElseThrow(IllegalArgumentException::new);
+
+        depositorAccount.setBalance(depositorAccount.getBalance().subtract(amount));
+        favoredAccount.setBalance(favoredAccount.getBalance().add(amount));
+
+        accountRepository.save(depositorAccount);
+        accountRepository.save(favoredAccount);
+    }
+
+    public void printReceipt() {
+        // logic to print the receipt
+    }
+}

persistence-modules/spring-boot-persistence-4/src/main/java/com/baeldung/transactionalandasync/BankAccountApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.transactionalandasync;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BankAccountApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(BankAccountApplication.class, args);
+    }
+
+}