Hibernate删除的对象将通过级联重新保存

我正在尝试删除hibernate中的子实体但得到此异常：

org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations): [com.epic.ecommerce.core.model.Customer#newnameTest]
at org.hibernate.internal.SessionImpl.forceFlush(SessionImpl.java:1236)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:187)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90)
at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:684)
at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:676)
at org.hibernate.engine.spi.CascadingActions$5.cascade(CascadingActions.java:235)
at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:350)
at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:293)...

这些是我的实体：

@Entity

@Table（name =“CUSTOMER”）公共类Customer {

@Id
    @Column(name="customer_id")
    @GeneratedValue(generator="gen")
    @GenericGenerator(name="gen", strategy="foreign",parameters=@Parameter(name="property", value="user"))
    private String id;

@OneToMany（cascade = CascadeType.ALL，mappedBy =“customerId”，orphanRemoval = true）private Set quoteConfigs;

public Set<QuoteConfiguration> getQuoteConfigs() {
    return quoteConfigs;
    }

    public void setQuoteConfigs(Set<QuoteConfiguration> quoteConfigs) {
    this.quoteConfigs = quoteConfigs;
    }


    public String getId() {
        return id;
    }

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

    @OneToOne
    @PrimaryKeyJoinColumn
    private User user;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }



@Entity
@Table(name="quote_configuration")
public class QuoteConfiguration implements java.io.Serializable{

@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "quote_id",unique = true, nullable = false)  
private Integer quoteId;

@Column(name = "base_product", nullable = false)
private String baseProduct;

@Column(name = "quote_name")
private String quoteName;   

/*
@Column(name = "customer_customer_id")
private String customerId;

public String getCustomerId() {
    return customerId;
}

public void setCustomerId(String customerId) {
    this.customerId = customerId;
}
*/
@ManyToOne(cascade=CascadeType.ALL) 
@JoinColumn(name = "customer_customer_id")
private Customer customerId;


public Customer getCustomerId() {
    return customerId;
}

public void setCustomerId(Customer customerId) {
    this.customerId = customerId;
}

这是我试图删除的部分

Session session = this.sessionFactory.getCurrentSession();
    Query q = session.createQuery("from QuoteConfiguration where quoteId = :quoteId ");
    q.setParameter("quoteId", quoteId);
    QuoteConfiguration quote = (QuoteConfiguration)q.list().get(0);

    Query qc=session.createQuery("from Customer where id=:id");
    qc.setParameter("id", quote.getCustomerId().getId());

    Customer customer=(Customer)qc.list().get(0);
    customer.getQuoteConfigs().remove(quote);
    session.delete(quote);
    session.save(customer);

我的问题是如何删除子实体QuoteConfiguration，而不在Customer中获取该关联异常 . 谢谢