org.springframework.data.mapping.PropertyReferenceException what do I need to change?

Question

The text of exception says "No property fid found for type" (sic!), I tried to google but got nothing for that. Probably it stands for "feature id", but I'm not sure what's going on with it anyway. How do I fix it? Is there something wrong with my class?

My Attribute class:

@Entity
@Table(name = "LAB3_ATTRIBUTES")
public class Attribute {

@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
@Column(name = "ATTR_ID", length = 10, nullable = false)
private Integer id;

@Column(name = "NAME")
private String name;

@ManyToOne
@JoinColumn(name = "OBJECT_TYPE_ID", referencedColumnName = "OBJECT_TYPE_ID")
private ObjectType objectType;

@OneToMany(mappedBy = "attribute", cascade = CascadeType.ALL)
private List parameters;

public Attribute() {
}

public Attribute(String name, ObjectType objectType) {
    this.name = name;
    this.objectType = objectType;
}

public Integer getId() {
    return id;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public ObjectType getObjectType() {
    return objectType;
}

public void setObjectType(ObjectType objectType) {
    this.objectType = objectType;
}

public List getParameters() {
    return parameters;
}

public void setParameters(List parameters) {
    this.parameters = parameters;
}
}

My AttributeRepository interface:

public interface AttributeRepository extends JpaRepository {

    Attribute findById(int id);
    List findByName(String name);
    List fidByObjectType(ObjectType objectType);
}

My AttributeService interface:

public interface AttributeService {
    void save(Attribute attribute);
    Attribute findById(int id);
    List findByName(String name);
    List findByObjectType(ObjectType objectType);
}

My AttributeServiceImpl class:

@Service
public class AttributeServiceImpl implements AttributeService {

    @Autowired
    private AttributeRepository attributeRepository;    

    public void save(Attribute attribute) {
        attributeRepository.save(attribute);
    }
    public Attribute findById(int id) {
        return attributeRepository.findById(id);
    }
    public List findByName(String name) {
        return attributeRepository.findByName(name);
    }
    public List findByObjectType(ObjectType objectType) {
        return attributeRepository.fidByObjectType(objectType);
    }
}

My Exception:

    <15 ìàÿ 2017, 8:49:22,550 AM EEST>    (PropertyPath.java:75)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    Truncated. see log file for complete stacktrace
> 
<15 ìàÿ 2017, 8:49:22,561 AM EEST>    (PropertyPath.java:75)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    Truncated. see log file for complete stacktrace
> 
<15 ìàÿ 2017, 8:49:22,608 AM EEST>    <2017-05-15 08:49:22.592--No partition instance associated with current SessionManager instance.> 
<15 ìàÿ 2017, 8:49:22,614 AM EEST>    (PropertyPath.java:75)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    Truncated. see log file for complete stacktrace
> 
<15 ìàÿ 2017, 8:49:22,618 AM EEST>     
<15 ìàÿ 2017, 8:49:22,662 AM EEST>     
<15 ìàÿ 2017, 8:49:22,663 AM EEST>    (PropertyPath.java:75)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:353)
    Truncated. see log file for complete stacktrace

Jens Schauder · Accepted Answer

You have a typo in this line:

List fidByObjectType(ObjectType objectType);

It should be

List findByObjectType(ObjectType objectType);

Due to the typo, Spring Data is looking for a property named "fid", which of course does not exist.

org.springframework.data.mapping.PropertyReferenceException what do I need to change?

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