の問題は、私は私のリポジトリに次のクエリを持っている場所と同じエンティティへの句

Question

でフェッチ参加します。 すべて正常に動作し、ユーザーのプロジェクトを返しますが、各プロジェクトで対応するユーザーセットが返されるようにします。だから、参加フェッチとそれを更新：

SELECT p FROM Project p JOIN FETCH p.users JOIN p.users u WHERE u.login =:login 

しかし、今、私は次の例外を得た：

nested exception is java.lang.IllegalArgumentException: Count query validation failed for method public abstract org.springframework.data.domain.Page com.example.app.repository.ProjectRepository.findAllByUserLo‌​gin(java.lang.String‌​,org.springframework‌​.data.domain.Pageabl‌​e)! org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list 

は、WHERE句を実行すると同時に、コレクションを取得するための回避策を見つけることができません。

プロジェクトエンティティ：

@Entity 
@Table(name = "project") 
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) 
@Document(indexName = "project") 
public class Project implements Serializable { 

private static final long serialVersionUID = 1L; 

@Id 
@GeneratedValue(strategy = GenerationType.AUTO) 
private Long id; 

@NotNull 
@Size(min = 10, max = 50) 
@Column(name = "name", length = 50, nullable = false) 
private String name; 

@Size(max = 150) 
@Column(name = "description", length = 150) 
private String description; 

@Column(name = "project_type") 
private Integer projectType; 

@Column(name = "is_active") 
private Boolean isActive; 

@Column(name = "date_created") 
private ZonedDateTime dateCreated; 

@Column(name = "date_updated") 
private ZonedDateTime dateUpdated; 

@ManyToMany 
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) 
@JoinTable(name = "project_user", 
      joinColumns = @JoinColumn(name="projects_id", referencedColumnName="ID"), 
      inverseJoinColumns = @JoinColumn(name="users_id", referencedColumnName="ID")) 
private Set<User> users = new HashSet<>(); 

@OneToMany(mappedBy = "project") 
@JsonIgnore 
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) 
private Set<Milestone> milestones = new HashSet<>(); 

@OneToMany(mappedBy = "project") 
@JsonIgnore 
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) 
private Set<TaskList> taskLists = new HashSet<>(); 

public Long getId() { 
    return id; 
} 

public void setId(Long id) { 
    this.id = id; 
} 

public String getName() { 
    return name; 
} 

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

public String getDescription() { 
    return description; 
} 

public void setDescription(String description) { 
    this.description = description; 
} 

public Integer getProjectType() { 
    return projectType; 
} 

public void setProjectType(Integer projectType) { 
    this.projectType = projectType; 
} 

public Boolean isIsActive() { 
    return isActive; 
} 

public void setIsActive(Boolean isActive) { 
    this.isActive = isActive; 
} 

public ZonedDateTime getDateCreated() { 
    return dateCreated; 
} 

public void setDateCreated(ZonedDateTime dateCreated) { 
    this.dateCreated = dateCreated; 
} 

public ZonedDateTime getDateUpdated() { 
    return dateUpdated; 
} 

public void setDateUpdated(ZonedDateTime dateUpdated) { 
    this.dateUpdated = dateUpdated; 
} 

public Set<User> getOwners() { 
    return users; 
} 

public void setOwners(Set<User> users) { 
    this.users = users; 
} 

public Set<Milestone> getMilestones() { 
    return milestones; 
} 

public void setMilestones(Set<Milestone> milestones) { 
    this.milestones = milestones; 
} 

public Set<TaskList> getTaskLists() { 
    return taskLists; 
} 

public void setTaskLists(Set<TaskList> taskLists) { 
    this.taskLists = taskLists; 
} 

@Override 
public boolean equals(Object o) { 
    if (this == o) { 
     return true; 
    } 
    if (o == null || getClass() != o.getClass()) { 
     return false; 
    } 
    Project project = (Project) o; 
    if(project.id == null || id == null) { 
     return false; 
    } 
    return Objects.equals(id, project.id); 
} 

@Override 
public int hashCode() { 
    return Objects.hashCode(id); 
} 

@Override 
public String toString() { 
    return "Project{" + 
     "id=" + id + 
     ", name='" + name + "'" + 
     ", description='" + description + "'" + 
     ", projectType='" + projectType + "'" + 
     ", isActive='" + isActive + "'" + 
     ", dateCreated='" + dateCreated + "'" + 
     ", dateUpdated='" + dateUpdated + "'" + 
     '}'; 
    } 
} 

ユーザエンティティ：

@Entity 
@Table(name = "user") 
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE) 
@Document(indexName = "user") 
public class User extends AbstractAuditingEntity implements Serializable { 

private static final long serialVersionUID = 1L; 

@Id 
@GeneratedValue(strategy = GenerationType.AUTO) 
private Long id; 

@NotNull 
@Pattern(regexp = Constants.LOGIN_REGEX) 
@Size(min = 1, max = 100) 
@Column(length = 100, unique = true, nullable = false) 
private String login; 

@JsonIgnore 
@NotNull 
@Size(min = 60, max = 60) 
@Column(name = "password_hash",length = 60) 
private String password; 

@Size(max = 50) 
@Column(name = "first_name", length = 50) 
private String firstName; 

@Size(max = 50) 
@Column(name = "last_name", length = 50) 
private String lastName; 

@Email 
@Size(max = 100) 
@Column(length = 100, unique = true) 
private String email; 

@NotNull 
@Column(nullable = false) 
private boolean activated = false; 

@Size(min = 2, max = 5) 
@Column(name = "lang_key", length = 5) 
private String langKey; 

@Size(max = 20) 
@Column(name = "activation_key", length = 20) 
@JsonIgnore 
private String activationKey; 

@Size(max = 20) 
@Column(name = "reset_key", length = 20) 
private String resetKey; 

@Column(name = "reset_date", nullable = true) 
private ZonedDateTime resetDate = null; 

@Column(name = "avatar", nullable = true) 
private String avatar; 

public Long getId() { 
    return id; 
} 

public void setId(Long id) { 
    this.id = id; 
} 

public String getLogin() { 
    return login; 
} 

public void setLogin(String login) { 
    this.login = login.toLowerCase(Locale.ENGLISH); 
} 

public String getAvatar() { 
    return avatar; 
} 

public void setAvatar(String avatar) { 
    this.avatar = avatar; 
} 

public String getPassword() { 
    return password; 
} 

public void setPassword(String password) { 
    this.password = password; 
} 

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 String getEmail() { 
    return email; 
} 

public void setEmail(String email) { 
    this.email = email; 
} 

public boolean getActivated() { 
    return activated; 
} 

public void setActivated(boolean activated) { 
    this.activated = activated; 
} 

public String getActivationKey() { 
    return activationKey; 
} 

public void setActivationKey(String activationKey) { 
    this.activationKey = activationKey; 
} 

public String getResetKey() { 
    return resetKey; 
} 

public void setResetKey(String resetKey) { 
    this.resetKey = resetKey; 
} 

public ZonedDateTime getResetDate() { 
    return resetDate; 
} 

public void setResetDate(ZonedDateTime resetDate) { 
    this.resetDate = resetDate; 
} 

public String getLangKey() { 
    return langKey; 
} 

public void setLangKey(String langKey) { 
    this.langKey = langKey; 
} 

@Override 
public boolean equals(Object o) { 
    if (this == o) { 
     return true; 
    } 
    if (o == null || getClass() != o.getClass()) { 
     return false; 
    } 

    User user = (User) o; 

    if (!login.equals(user.login)) { 
     return false; 
    } 

    return true; 
} 

@Override 
public int hashCode() { 
    return login.hashCode(); 
} 

@Override 
public String toString() { 
    return "User{" + 
     "login='" + login + '\'' + 
     ", avatar='" + avatar + '\'' + 
     ", firstName='" + firstName + '\'' + 
     ", lastName='" + lastName + '\'' + 
     ", email='" + email + '\'' + 
     ", activated='" + activated + '\'' + 
     ", langKey='" + langKey + '\'' + 
     ", activationKey='" + activationKey + '\'' + 
     "}"; 
    } 


} 

Answer 1

join秒を削除するようにしてください：

SELECT p FROM Project p JOIN FECTH p.users u WHERE u.login =:login

そして、あなたが指定したユーザーが含まれているプロジェクトを取得したい場合ログインすれば、これを試すことができます：

SELECT p FROM Project p JOIN FECTH p.users u WHERE :login in elements(u.login)