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BAEL-2729 code samples for the article (#12443)

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* BAEL-2729 code samples for the article

* BAEL-2729 fix formatting issues.

Co-authored-by: Yavuz Tas <ytas@vwd.com>
This commit is contained in:
Yavuz Tas 2022-07-15 15:34:02 +02:00 committed by GitHub
parent f56d707bf4
commit 2a30030555
7 changed files with 160 additions and 0 deletions
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31
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/Person.java Normal file
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package com.baeldung.serializeentityid;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class Person {
/**
* This doesn't work without a projection
*/
//@JsonProperty
@Id
@GeneratedValue
private Long id;
private String name;
public Long getId() {
return this.id;
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
}

27
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/PersonController.java Normal file
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package com.baeldung.serializeentityid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.rest.webmvc.RepositoryRestController;
import org.springframework.data.web.PagedResourcesAssembler;
import org.springframework.hateoas.EntityModel;
import org.springframework.hateoas.PagedModel;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
@RepositoryRestController
public class PersonController {
@Autowired
PersonRepository repository;
@GetMapping("/persons")
ResponseEntity<?> persons(PagedResourcesAssembler resourcesAssembler) {
Page<Person> persons = this.repository.findAll(Pageable.ofSize(20));
Page<PersonDto> personDtos = persons.map(PersonDto::new);
PagedModel<EntityModel<PersonDto>> pagedModel = resourcesAssembler.toModel(personDtos);
return ResponseEntity.ok(pagedModel);
}
}

21
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/PersonDto.java Normal file
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package com.baeldung.serializeentityid;
public class PersonDto {
private final Long id;
private final String name;
public PersonDto(Person person) {
this.id = person.getId();
this.name = person.getName();
}
public Long getId() {
return this.id;
}
public String getName() {
return this.name;
}
}

7
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/PersonRepository.java Normal file
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package com.baeldung.serializeentityid;
import org.springframework.data.jpa.repository.JpaRepository;
public interface PersonRepository extends JpaRepository<Person, Long> {
}

15
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/PersonView.java Normal file
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package com.baeldung.serializeentityid;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import org.springframework.data.rest.core.config.Projection;
@JsonPropertyOrder({ "id", "name" })
@Projection(name = "person-view", types = Person.class)
public interface PersonView {
Long getId();
String getName();
}

27
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/RestConfiguration.java Normal file
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package com.baeldung.serializeentityid;
import javax.persistence.EntityManager;
import javax.persistence.metamodel.Type;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.rest.core.config.RepositoryRestConfiguration;
import org.springframework.data.rest.webmvc.config.RepositoryRestConfigurer;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
@Configuration
public class RestConfiguration implements RepositoryRestConfigurer {
@Autowired
private EntityManager entityManager;
@Override
public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config, CorsRegistry cors) {
final Class<?>[] classes = this.entityManager.getMetamodel()
.getEntities()
.stream()
.map(Type::getJavaType)
.toArray(Class[]::new);
config.exposeIdsFor(classes);
}
}

32
persistence-modules/spring-data-rest-2/src/main/java/com/baeldung/serializeentityid/SerializeEntityIdApp.java Normal file
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package com.baeldung.serializeentityid;
import javax.annotation.PostConstruct;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SerializeEntityIdApp {
private final PersonRepository repository;
public SerializeEntityIdApp(PersonRepository repository) {
this.repository = repository;
}
@PostConstruct
void onStart() {
final Person person1 = new Person();
person1.setName("John Doe");
final Person person2 = new Person();
person2.setName("Markus Boe");
this.repository.save(person1);
this.repository.save(person2);
}
public static void main(String[] args) {
SpringApplication.run(SerializeEntityIdApp.class, args);
}
}