埋め込み可能なものを使用して多数を冬眠させる

Question

私は春4、Oracle 11gr2で休止状態のormを勉強しています。私は下のリンクを参照しています - https://www.mkyong.com/hibernate/hibernate-many-to-many-example-join-table-extra-column-annotation/

私はそれを動作させることはできません。

ここに私のDBテーブルがあります。

ここで私のエンティティはPOJOスタイルです。

ユーザーアカウント情報を含むAccount.java。

import java.util.HashSet; 
import java.util.Set; 

import javax.persistence.CascadeType; 
import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.OneToMany; 
import javax.persistence.SequenceGenerator; 
import javax.persistence.Table; 
import javax.persistence.UniqueConstraint; 

@Entity 
@Table(name="account", 
    uniqueConstraints={ 
     @UniqueConstraint(columnNames={"email"}), 
     @UniqueConstraint(columnNames={"nickname"}) 
    } 
) 
public class Account { 

    private int accountId; 
    private String email; 
    private String password; 
    private String nickname; 
    private int enabled; 
    private Set<UserRole> userRoles = new HashSet<UserRole>(0); 

    public Account() {} 

    public Account(String email, String password, String nickname, int enabled) { 
     this.email = email; 
     this.password = password; 
     this.nickname = nickname; 
     this.enabled = enabled; 
    } 

    @Id 
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_account") 
    @SequenceGenerator(name="seq_account", sequenceName="seq_account", allocationSize=1) 
    @Column(name="account#", unique=true, nullable=false) 
    public int getAccountId() { 
     return accountId; 
    } 

    public void setAccountId(int accountId) { 
     this.accountId = accountId; 
    } 

    @Column(name="email", unique=true, nullable=false) 
    public String getEmail() { 
     return email; 
    } 

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

    @Column(name="passwd", nullable=false) 
    public String getPassword() { 
     return password; 
    } 

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

    @Column(name="nickname", unique=true, nullable=false) 
    public String getNickname() { 
     return nickname; 
    } 

    public void setNickname(String nickname) { 
     this.nickname = nickname; 
    } 

    @Column(name="enabled", nullable=false) 
    public int getEnabled() { 
     return enabled; 
    } 

    public void setEnabled(int enabled) { 
     this.enabled = enabled; 
    } 

    @OneToMany(mappedBy="pk.account", fetch=FetchType.LAZY, cascade=CascadeType.ALL) 
    public Set<UserRole> getUserRoles() { 
     return userRoles; 
    } 

    public void setUserRoles(Set<UserRole> userRoles) { 
     this.userRoles = userRoles; 
    } 





} 

権限の役割定義を含むRoleDef.java。

import java.util.HashSet; 
import java.util.Set; 

import javax.persistence.CascadeType; 
import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.OneToMany; 
import javax.persistence.SequenceGenerator; 
import javax.persistence.Table; 
import javax.persistence.UniqueConstraint; 


@Entity 
@Table(name="role_def", 
    uniqueConstraints=@UniqueConstraint(columnNames={"role_nm"}) 
) 
public class RoleDef { 

    private int roleId; 
    private String roleName; 
    private Set<UserRole> userRoles = new HashSet<UserRole>(0); 

    @Id 
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_role_def") 
    @SequenceGenerator(name="seq_role_def", sequenceName="seq_role_def", allocationSize=1) 
    @Column(name="role#", unique=true, nullable=false) 
    public int getRoleId() { 
     return roleId; 
    } 
    public void setRoleId(int roleId) { 
     this.roleId = roleId; 
    } 

    @Column(name="role_nm", unique=true, nullable=false) 
    public String getRoleName() { 
     return roleName; 
    } 
    public void setRoleName(String roleName) { 
     this.roleName = roleName; 
    } 

    @OneToMany(mappedBy="pk.roleDef", fetch=FetchType.LAZY, cascade=CascadeType.ALL) 
    public Set<UserRole> getUserRoles() { 
     return userRoles; 
    } 
    public void setUserRoles(Set<UserRole> userRoles) { 
     this.userRoles = userRoles; 
    } 



} 

アカウントとRoleDefの両方に接続するUserRole.java。

import java.io.Serializable; 

import javax.persistence.AssociationOverride; 
import javax.persistence.AssociationOverrides; 
import javax.persistence.EmbeddedId; 
import javax.persistence.Entity; 
import javax.persistence.JoinColumn; 
import javax.persistence.Table; 
import javax.persistence.Transient; 

@Entity 
@Table(name="user_role") 
@AssociationOverrides(value={ 
     @AssociationOverride(name="pk.account", joinColumns={@JoinColumn(referencedColumnName="account#")}), 
     @AssociationOverride(name="pk.roleDef", joinColumns={@JoinColumn(referencedColumnName="role#")}) 
}) 
public class UserRole implements Serializable{ 

    private static final long serialVersionUID = 1L; 

    private UserRoleId pk = new UserRoleId(); 

    @EmbeddedId 
    public UserRoleId getPk() { 
     return pk; 
    } 

    public void setPk(UserRoleId pk) { 
     this.pk = pk; 
    } 

    @Transient 
    public Account getAccount(){ 
     return pk.getAccount(); 
    } 

    public void setAccount(Account account){ 
     pk.setAccount(account); 
    } 

    @Transient 
    public RoleDef getRoleDef(){ 
     return pk.getRoleDef(); 
    } 

    public void setRoleDef(RoleDef roleDef){ 
     pk.setRoleDef(roleDef); 
    } 

    @Override 
    public boolean equals(Object o) { 
     if (this == o) 
      return false; 

     if (o == null || getClass() != o.getClass()) 
      return false; 

     UserRole that = (UserRole) o; 

     if (getPk() != null ? 
       !getPk().equals(that.getPk()) : that.getPk() != null) 
      return false; 

     return true; 
    } 

    @Override 
    public int hashCode() { 
     return (getPk() != null ? getPk().hashCode() : 0); 
    } 





} 

UserRole.java

import java.io.Serializable; 

import javax.persistence.Embeddable; 
import javax.persistence.ManyToOne; 

@Embeddable 
public class UserRoleId implements Serializable{ 

    private static final long serialVersionUID = 1L; 

    private Account account; 
    private RoleDef roleDef; 

    @ManyToOne 
    public Account getAccount() { 
     return account; 
    } 
    public void setAccount(Account account) { 
     this.account = account; 
    } 

    @ManyToOne 
    public RoleDef getRoleDef() { 
     return roleDef; 
    } 
    public void setRoleDef(RoleDef roleDef) { 
     this.roleDef = roleDef; 
    } 

    @Override 
    public int hashCode() { 
     int result; 
     result = (account!= null ? account.hashCode() : 0); 
     result = 31 * result + (roleDef != null ? roleDef.hashCode() : 0); 
     return result; 
    } 

    @Override 
    public boolean equals(Object o) { 
     if (this == o) 
      return false; 

     if (o == null || getClass() != o.getClass()) 
      return false; 

     UserRoleId that = (UserRoleId) o; 

     if (account != null ? 
       !account.equals(that.getAccount()) : that.getAccount() != null) 
      return false; 

     if (roleDef != null ? 
       !roleDef.equals(that.getRoleDef()) : that.getRoleDef() != null) 
      return false; 

     return true; 
    } 


} 

、実行コードの主キーを表しUserRoleId.java：

Account account = new Account(); 
account.setEmail("asdasd123@google.com"); 
account.setPassword("1234"); 
account.setNickname("playmaker"); 
account.setEnabled(0); 

Session session = sessionFactory.getCurrentSession(); 

// Get normal user role information. 
Query query = session.createQuery("from RoleDef a where a.roleName = :roleName"); 
query.setParameter("roleName", ROLE_USER); 
@SuppressWarnings("unchecked") 
List<RoleDef> roleList = (List<RoleDef>)query.list(); 
RoleDef roleDef = roleList.get(0); 

UserRole userRole = new UserRole(); 

userRole.setAccount(account); 
userRole.setRoleDef(roleDef); 

account.getUserRoles().add(userRole); 

session.save(account); 

そして、私は、コードを実行すると、ここでエラー・スタックの一部です：

Hibernate: select userrole_.account_account#, userrole_.roleDef_role# from user_role userrole_ where userrole_.account_account#=? and userrole_.roleDef_role#=? 
INFO : jdbc.audit - 5. PreparedStatement.new PreparedStatement returned 
INFO : jdbc.audit - 5. Connection.prepareStatement(select userrole_.account_account#, userrole_.roleDef_role# from user_role userrole_ where userrole_.account_account#=? and userrole_.roleDef_role#=?) returned net.sf.log4jdbc.PreparedStatementSpy@1ba4ffed 
INFO : jdbc.audit - 5. PreparedStatement.setInt(1, 3) returned 
INFO : jdbc.audit - 5. PreparedStatement.setInt(2, 23) returned 
INFO : jdbc.sqlonly - select userrole_.account_account#, userrole_.roleDef_role# from user_role userrole_ where userrole_.account_account#=3 
and userrole_.roleDef_role#=23 
ERROR: jdbc.audit - 5. PreparedStatement.executeQuery() select userrole_.account_account#, userrole_.roleDef_role# from user_role userrole_ where userrole_.account_account#=3 and userrole_.roleDef_role#=23 
java.sql.SQLSyntaxErrorException: ORA-00904: "USERROLE_"."ROLEDEF_ROLE#": 부적합한 식별자 

任意のアイデアsolv eこの問題？

ありがとうございました。

Answer 1

ORA-00904は、データベースに存在しない列を参照している可能性があります。あなたのクエリを見て

ORA-00904 string: invalid identifier 

Cause: The column name entered is either missing or invalid. 

Action: Enter a valid column name. A valid column name must begin with a letter, be less than or equal to 30 characters, and consist of only alphanumeric characters and the special characters $, _, and #. 

If it contains other characters, then it must be enclosed in double quotation marks. It may not be a reserved word. 

see here

あなたは"USERROLE_"."ROLEDEF_ROLE#"を選択しようとしているだけ"USERROLE_"."ROLEDEF#"列がありますあなたのデータモデルを見ています。

は、私はあなただけreferencedColumnNameとを上書き元のコードのように

@AssociationOverrides(value={ 
    @AssociationOverride(name="pk.account", joinColumns={@JoinColumn(name="account#", referencedColumnName="account#")}), 
    @AssociationOverride(name="pk.roleDef", joinColumns={@JoinColumn(name="role#", referencedColumnName="role#")}) 

は、あなたの問題を解決すべきだと思う、ないCOLUMNNAMEはUSER_ROLEそのもので、そのためHibernateは大会の魔女によって右のカラム名を思い付くしようとしますあなたのDatamodelに適合しません。