JPA Hibernate удалить дочерний элемент дочернего объекта (используя Spring JPARepository)

Question

Я разрабатываю код, используя jpa для существующих таблиц базы данных (в Oracle), в котором я встал вопрос об удалении дочернего элемента дочернего объекта ,

Позвольте мне дать вам фрагменты:

Grandparent объект:

package com.blah.blah.jpa; 

import java.io.Serializable; 
import java.sql.Timestamp; 
import java.util.ArrayList; 
import java.util.HashSet; 
import java.util.List; 
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.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.OneToMany; 
import javax.persistence.SequenceGenerator; 
import javax.persistence.Table; 

@Entity 
@Table(name = "BD_SETUP") 
public class BDSetup implements Serializable { 

    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(generator = "BD_SETUP_SEQ", strategy = GenerationType.SEQUENCE) 
    @SequenceGenerator(name = "BD_SETUP_SEQ", sequenceName = "BD_SETUP_SEQ", allocationSize = 1) 
    @Column(name = "ID") 
    private Long id; 

    @ManyToOne(fetch = FetchType.LAZY) 
    @JoinColumn(name = "BD_SECURITY_ID", insertable = true, updatable = false) 
    private BDSecurity bdSecurity; 

    @Column(name = "IS_ENABLED") 
    private String isEnabled; 

    @Column(name = "IS_FULL_LOAD") 
    private String isFullLoad; 

    @Column(name = "LAST_RUN_BEGIN") 
    private Timestamp lastRunBegin; 

    @Column(name = "LAST_RUN_END") 
    private Timestamp lastRunEnd; 

    @Column(name = "NEXT_RUN_BEGIN") 
    private Timestamp nextRunBegin; 

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

    @Column(name = "COMMENTS") 
    private String comments; 

    @OneToMany(mappedBy = "bdSetup", fetch = FetchType.LAZY, cascade = {CascadeType.ALL}, orphanRemoval = true) 
    private Set<BDExtractSetup> bdExtractSetups = new HashSet<BDExtractSetup>(); 

    public Long getId() { 
     return id; 
    } 
    public void setId(Long id) { 
     this.id = id; 
    } 
    public BDSecurity getBdSecurity() { 
     return bdSecurity; 
    } 
    public void setBdSecurity(BDSecurity bdSecurity) { 
     this.bdSecurity = bdSecurity; 
    } 
    public String getIsEnabled() { 
     return isEnabled; 
    } 
    public void setIsEnabled(String isEnabled) { 
     this.isEnabled = isEnabled; 
    } 
    public String getIsFullLoad() { 
     return isFullLoad; 
    } 
    public void setIsFullLoad(String isFullLoad) { 
     this.isFullLoad = isFullLoad; 
    } 
    public Timestamp getLastRunBegin() { 
     return lastRunBegin; 
    } 
    public void setLastRunBegin(Timestamp lastRunBegin) { 
     this.lastRunBegin = lastRunBegin; 
    } 
    public Timestamp getLastRunEnd() { 
     return lastRunEnd; 
    } 
    public void setLastRunEnd(Timestamp lastRunEnd) { 
     this.lastRunEnd = lastRunEnd; 
    } 
    public Timestamp getNextRunBegin() { 
     return nextRunBegin; 
    } 
    public void setNextRunBegin(Timestamp nextRunBegin) { 
     this.nextRunBegin = nextRunBegin; 
    } 
    public String getName() { 
     return name; 
    } 
    public void setName(String name) { 
     this.name = name; 
    } 
    public String getComments() { 
     return comments; 
    } 
    public void setComments(String comments) { 
     this.comments = comments; 
    } 
    public Set<BDExtractSetup> getBdExtractSetups() { 
     return bdExtractSetups; 
    } 
    public void setBdExtractSetups(Set<BDExtractSetup> bdExtractSetups) { 
     this.bdExtractSetups = bdExtractSetups; 
    } 
    @Override 
    public String toString() { 
     return "BDSetup [id=" + id + ", bdSecurity=" + bdSecurity 
       + ", isEnabled=" + isEnabled + ", isFullLoad=" + isFullLoad 
       + ", lastRunBegin=" + lastRunBegin + ", lastRunEnd=" 
       + lastRunEnd + ", nextRunBegin=" + nextRunBegin + ", name=" 
       + name + ", comments=" + comments + "]"; 
    } 
} 

Son Entity (отображается таблица с дополнительной колонке):

package com.blah.blah.jpa; 

import java.io.Serializable; 
import java.util.HashSet; 
import java.util.List; 
import java.util.Set; 

import javax.persistence.CascadeType; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.OneToMany; 
import javax.persistence.SequenceGenerator; 
import javax.persistence.Table; 

@Entity 
@Table(name = "BD_EXTRACT_SETUP") 
public class BDExtractSetup implements Serializable { 
private static final long serialVersionUID = 1L; 

@Id 
@GeneratedValue(generator = "BD_EXTRACT_SETUP_SEQ", strategy = GenerationType.SEQUENCE) 
@SequenceGenerator(name = "BD_EXTRACT_SETUP_SEQ", sequenceName = "BD_EXTRACT_SETUP_SEQ", allocationSize = 1) 
private Long id; 

// bi-directional many-to-one association to BDSetup 
@ManyToOne 
@JoinColumn(name = "BD_SETUP_ID", referencedColumnName="ID", nullable = false) 
private BDSetup bdSetup; 

// bi-directional many-to-one association to BDExtract 
@ManyToOne 
@JoinColumn(name = "BD_EXTRACT_ID", referencedColumnName="ID", nullable = false) 
private BDExtract bdExtract; 

@OneToMany(mappedBy = "bdExtractSetup", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true) 
private Set<BDExtractSetupColumn> bdExtractSetupColumn = new HashSet<BDExtractSetupColumn>(); 

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

public Long getId() { 
    return id; 
} 

public BDSetup getBdSetup() { 
    return bdSetup; 
} 

public void setBdSetup(BDSetup bdSetup) { 
    this.bdSetup = bdSetup; 
} 

public void setBdExtract(BDExtract bdExtract) { 
    this.bdExtract = bdExtract; 
} 

public BDExtract getBdExtract() { 
    return bdExtract; 
} 

public void setExtractAndSetup(BDExtract bdExtract, BDSetup bdSetup) { 
    this.bdExtract = bdExtract; 
    this.bdSetup = bdSetup; 

} 

public Set<BDExtractSetupColumn> getBdExtractSetupColumn() { 
    return bdExtractSetupColumn; 
} 

public void setBdExtractSetupColumn(
     Set<BDExtractSetupColumn> bdExtractSetupColumn) { 
    this.bdExtractSetupColumn = bdExtractSetupColumn; 
} 
} 

внуку сущность (отображенная таблица с дополнительным столбцом):

package com.blah.blah.jpa; 

import java.io.Serializable; 

import javax.persistence.Column; 
import javax.persistence.EmbeddedId; 
import javax.persistence.Entity; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.MapsId; 
import javax.persistence.Table; 

@Entity 
@Table(name = "BD_EXTRACT_SETUP_COLUMN") 
public class BDExtractSetupColumn implements Serializable { 

private static final long serialVersionUID = 1L; 

@EmbeddedId 
private BDExtractSetupColumnId id = new BDExtractSetupColumnId(); 

@ManyToOne 
@MapsId("bdExtractSetupId") 
@JoinColumn(name = "BD_EXTRACT_SETUP_ID", referencedColumnName = "ID", nullable = false) 
private BDExtractSetup bdExtractSetup; 

@ManyToOne 
@MapsId("bdExtractColumnId") 
@JoinColumn(name = "BD_EXTRACT_COLUMN_ID", referencedColumnName = "ID", nullable = false) 
private BDExtractColumn bdExtractColumn; 

@Column(name = "DISPLAY_ORDER") 
private Long displayOrder; 

/** 
* @return the id 
*/ 
public BDExtractSetupColumnId getId() { 
    return id; 
} 

/** 
* @param id the id to set 
*/ 
public void setId(BDExtractSetupColumnId id) { 
    this.id = id; 
} 

/** 
* @return the bdExtractSetup 
*/ 
public BDExtractSetup getBdExtractSetup() { 
    return bdExtractSetup; 
} 

/** 
* @param bdExtractSetup the bdExtractSetup to set 
*/ 
public void setBdExtractSetup(BDExtractSetup bdExtractSetup) { 
    this.bdExtractSetup = bdExtractSetup; 
} 

/** 
* @return the bdExtractColumn 
*/ 
public BDExtractColumn getBdExtractColumn() { 
    return bdExtractColumn; 
} 

/** 
* @param bdExtractColumn the bdExtractColumn to set 
*/ 
public void setBdExtractColumn(BDExtractColumn bdExtractColumn) { 
    this.bdExtractColumn = bdExtractColumn; 
} 

/** 
* @return the displayOrder 
*/ 
public Long getDisplayOrder() { 
    return displayOrder; 
} 

/** 
* @param displayOrder the displayOrder to set 
*/ 
public void setDisplayOrder(Long displayOrder) { 
    this.displayOrder = displayOrder; 
} 
} 

Существует код, который пытается удалить детей следующим образом. Я могу получить bdSetup и все его содержимое.

Set<BDExtractSetup> bdExtractSetups = bdSetup.getBdExtractSetups(); 
bdExtractSetups.clear(); 
bdSetupDAO.save(bdSetup); 

И DAO как:

package com.blah.blah.jpa.dao; 

import org.springframework.data.jpa.repository.JpaRepository; 
import org.springframework.stereotype.Repository; 

import com.blah.blah.jpa.BDSecurity; 
import com.blah.blah.jpa.BDSetup; 

@Repository 
public interface BDSetupDAO extends JpaRepository<BDSetup, Long>{ 

public BDSetup findByBdSecurityAndName(BDSecurity bdSecurity, String name); 

} 

Я пытаюсь обновить bdSetup с:

if(isUpdate) { 

     Set<BDExtractSetup> bdExtractSetups = bdSetup.getBdExtractSetups(); 

     for (BDExtractSetup bdExtractSetup : bdSetup.getBdExtractSetups()) { 
      bdExtractSetup.getBdExtractSetupColumn().clear(); 
     } 
//   bdExtractSetups.clear(); 
//   bdExtractSetupDAO.delete(bdSetup.getBdExtractSetups()); 
      bdSetup.getBdExtractSetups().clear(); 
//   bdSetup = bdSetupDAO.getOne(bdSetup.getId()); 

//   bdExtractSetupDAO.deleteInBatch(bdExtractSetups); 

//   bdSetup = bdSetupDAO.findOne(bdSetup.getId()); 


     for (int i = 0; i < bdExtracts.size(); i++) { 

      BDExtract bdExtract = bdExtracts.get(i); 

      BDExtractSetup bdExtractSetup = new BDExtractSetup(); 
      bdExtractSetup.setBdSetup(bdSetup); 
      bdExtractSetup.setBdExtract(bdExtract); 

      Set<BDExtractSetupColumn> tempExtractSetupColumns = new HashSet<BDExtractSetupColumn>(); 

      for (BDExtractDTO bdExtractDTO : mappedBdExtracts) { 

       if(bdExtract.getId().equals(bdExtractDTO.getId())) { 
        BDExtractColumn extractColumn = null; 
        BDExtractSetupColumn extractSetupColumn = null; 
        for (BDExtractColumnDTO bdExtractColumnDTO : bdExtractDTO.getBdExtractColumns()) { 
         extractColumn = new BDExtractColumn(); 
         extractColumn.setName(bdExtractColumnDTO.getName()); 
         extractColumn.setBdExtract(bdExtract); 

         extractSetupColumn = new BDExtractSetupColumn(); 
         extractSetupColumn.setBdExtractColumn(extractColumn); 
         extractSetupColumn.setBdExtractSetup(bdExtractSetup); 
         extractSetupColumn.setDisplayOrder(bdExtractColumnDTO.getDisplayOrder()); 

         tempExtractSetupColumns.add(extractSetupColumn); 
        } 
        break; //if bdExtractId matches the id in mappedBdExtracts, do not iterate further for bdExtractColumns of extractDTO 
       } 
      } 
      bdExtractSetup.getBdExtractSetupColumn().addAll(tempExtractSetupColumns); 
      finalBDExtractSetups.add(bdExtractSetup); 
     } 
     bdSetup.getBdExtractSetups().addAll(finalBDExtractSetups); 
    } 
    return finalBDExtractSetups; 

Предыдущее исключение нет, теперь получает другое исключение, как:

Hibernate: 
insert 
into 
    BD_EXTRACT_SETUP 
    (BD_EXTRACT_ID, BD_SETUP_ID, id) 
values 
    (?, ?, ?) 
31 May 2015 10:08:24,256 [main] WARN org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: 1, SQLState: 23000 
31 May 2015 10:08:24,256 [main] ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - ORA-00001: unique constraint (BI_DATA.BD_EXTRACT_SETUP_UN1) violated 

31 May 2015 10:08:24,262 [main] INFO org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl - HHH000010: On release of batch it still contained JDBC statements 

Это означает, что удаление не является происходит прямой запрос на вставку. Любое решение, пожалуйста?

Спасибо.

Answer 1

Кажется, что вы присваиваете экземпляр новой коллекции экземпляру управляемого объекта.

Дополнительную информацию можно получить по телефону here, here и here.