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small example of hexagonal architecture in java

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sparrowV
2021-01-23 22:06:29 +04:00
parent 8ec997fbae
commit c0f96441a9
9 changed files with 143 additions and 6 deletions
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3
ddd-modules/hexagonalarchitecture/README.md Normal file
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This module contains articles about hexagonal architecture in java
### Relevant articles

35
ddd-modules/hexagonalarchitecture/pom.xml Normal file
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<?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>
<parent>
<artifactId>ddd-modules</artifactId>
<groupId>com.baeldung.dddmodules</groupId>
<version>1.0</version>
</parent>
<groupId>com.baeldung.dddmodules.hexagonalarchitecture</groupId>
<artifactId>hexagonalarchitecture</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>hexagonalarchitecture</name>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>

14
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/adapters/InMemoryUserPersistenceImpl.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.adapters;
import com.baeldung.dddmodules.hexagonalarchitecture.ports.UserPersistence;
import com.baeldung.dddmodules.hexagonalarchitecture.core.User;
import java.util.UUID;
class InMemoryUserPersistenceImpl implements UserPersistence {
@Override
public User createUser(User user) {
user.setId(UUID.randomUUID());
return user;
}
}

13
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/adapters/Main.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.adapters;
import com.baeldung.dddmodules.hexagonalarchitecture.core.User;
import com.baeldung.dddmodules.hexagonalarchitecture.core.UserServiceImpl;
import com.baeldung.dddmodules.hexagonalarchitecture.ports.UserService;
public class Main {
public static void main(String[] args) {
UserService userService = new UserServiceImpl(new InMemoryUserPersistenceImpl());
User user = userService.createUser(new User("John", "Doe"));
}
}

43
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/core/User.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.core;
import java.util.UUID;
public class User {
private UUID id;
private String firstName;
private String lastName;
public User(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public UUID getId() {
return id;
}
public void setId(UUID id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return "User{" + "id=" + id + ", firstName='" + firstName + '\'' + ", lastName='" + lastName + '\'' + '}';
}
}

17
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/core/UserServiceImpl.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.core;
import com.baeldung.dddmodules.hexagonalarchitecture.ports.UserPersistence;
import com.baeldung.dddmodules.hexagonalarchitecture.ports.UserService;
public class UserServiceImpl implements UserService {
private UserPersistence userPersistence;
public UserServiceImpl(UserPersistence userPersistence) {
this.userPersistence = userPersistence;
}
@Override
public User createUser(User userToCreate) {
return userPersistence.createUser(userToCreate);
}
}

7
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/ports/UserPersistence.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.ports;
import com.baeldung.dddmodules.hexagonalarchitecture.core.User;
public interface UserPersistence {
User createUser(User user);
}

7
ddd-modules/hexagonalarchitecture/src/main/java/com/baeldung/dddmodules/hexagonalarchitecture/ports/UserService.java Normal file
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package com.baeldung.dddmodules.hexagonalarchitecture.ports;
import com.baeldung.dddmodules.hexagonalarchitecture.core.User;
public interface UserService {
User createUser(User userToCreate);
}

10
ddd-modules/pom.xml
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<?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">
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<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>com.baeldung.dddmodules</groupId>
<artifactId>ddd-modules</artifactId>
@@ -23,7 +20,8 @@
<module>shippingcontext</module>
<module>ordercontext</module>
<module>mainapp</module>
</modules>
<module>hexagonalarchitecure</module>
</modules>
<dependencyManagement>
<dependencies>