Retrieve data from a specific entity in an inheritance relationship in Spring Data Mongo - spring

Question

I have implemented an inheritance relationship using Spring Data MongoDB
I have an abstract entity that contains all the attributes common to all the others.
#Document(collection = PersonEntity.COLLECTION_NAME)
public abstract class PersonEntity {
public final static String COLLECTION_NAME = "persons";
#Id
private ObjectId id;
#Field("first_name")
private String firstName;
#Field("last_name")
private String lastName;
private Integer age;
public PersonEntity(){}
#PersistenceConstructor
public PersonEntity(String firstName, String lastName, Integer age) {
super();
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
}
public ObjectId getId() {
return 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;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String getFullName(){
return this.firstName + " - " + this.lastName;
}
}
This entity inherits the entities UserSystemEntity and SonEntity. These have specific #Field attributes and do not define the #Document annotation. So all documents are stored in the collection of "PERSONS".
To work with these entities I have created the corresponding repositories. Here I put the repository for the entity SonEntity.
#Repository
public interface SonRepository extends MongoRepository<SonEntity, ObjectId> {
Iterable<SonEntity> findByParentId(ObjectId id);
Long countByParentId(ObjectId id);
Long countByParentIdAndId(ObjectId parentId, ObjectId id);
}
The problem I have, is that when I use this repository to obtain a list of entities "SonEntity" by the following method:
#Override
public Page<SonDTO> findPaginated(Pageable pageable) {
Page<SonEntity> childrenPage = sonRepository.findAll(pageable);
return childrenPage.map(new Converter<SonEntity, SonDTO>(){
#Override
public SonDTO convert(SonEntity sonEntity) {
return sonEntityMapper.sonEntityToSonDTO(sonEntity);
}
});
It returns me documents of all entity types (UserSystemEntity, ParentEntity, SonEntity).
How can I configure this correctly to retrieve only the documents of the SonEntity entity?
Thanks in advance.
"SonEntity" Entity code:
public final class SonEntity extends PersonEntity {
#DBRef
private SchoolEntity school;
#DBRef
private ParentEntity parent;
public SonEntity() {
}
#PersistenceConstructor
public SonEntity(String firstName, String lastName, Integer age, SchoolEntity school, ParentEntity parent) {
super(firstName, lastName, age);
this.school = school;
this.parent = parent;
}
public SchoolEntity getSchool() {
return school;
}
public void setSchool(SchoolEntity school) {
this.school = school;
}
public ParentEntity getParent() {
return parent;
}
public void setParent(ParentEntity parent) {
this.parent = parent;
}
}
"UserSystemEntity" code:
public class UserSystemEntity extends PersonEntity {
#Field("email")
protected String email;
#Field("password")
protected String password;
#Field("is_locked")
protected Boolean locked = Boolean.FALSE;
#Field("last_login_access")
protected Date lastLoginAccess;
#DBRef
protected AuthorityEntity authority;
public UserSystemEntity() {
}
#PersistenceConstructor
public UserSystemEntity(String firstName, String lastName, Integer age, String email, String password, AuthorityEntity authority) {
super(firstName, lastName, age);
this.email = email;
this.password = password;
this.authority = authority;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Boolean isLocked() {
return locked;
}
public void setLocked(Boolean locked) {
this.locked = locked;
}
public Date getLastLoginAccess() {
return lastLoginAccess;
}
public void setLastLoginAccess(Date lastLoginAccess) {
this.lastLoginAccess = lastLoginAccess;
}
public AuthorityEntity getAuthority() {
return authority;
}
public void setAuthority(AuthorityEntity authority) {
this.authority = authority;
}
#Override
public String toString() {
return "UserSystemEntity [email=" + email + ", password=" + password + ", locked=" + locked + ", authority="
+ authority + "]";
}
}
"ParentEntity" code:
public final class ParentEntity extends UserSystemEntity {
public ParentEntity() {
}
#PersistenceConstructor
public ParentEntity(String firstName, String lastName, Integer age, String email, String password,
AuthorityEntity authority) {
super(firstName, lastName, age, email, password, authority);
}
}
Here you can verify that when trying to list all entities of type "SonEntity" appear data of other entities. The user "admin" is stored in the DB as a document of type UserSystemEntity:
The information is stored in MongoDB as follows: