Question

我有一个名为SecurityContacts的表和另一个名为Contacts的表。他们之间的联系是ManyToOne。 SecurityContacts包含AgentContact和AuditContact的列，它们是两种不同类型的联系人。它还有一个与这两个联系人关联的security_id列。这两个联系人与Contacts的主键连接，即contact_id。

以下是问题的示例：假设SecurityContact中的条目存在，如下所示：AgentContact = 5，AuditContact = NULL，security_id = 1000。您尝试将现有条目的AuditContact设置为6. Hibernate创建第二个条目：AgentContact = Null，AuditContact = 6，security_id = 1000。应该发生的是现有条目应修改为：AgentContact = 5，AuditContact = 6，security_id = 1000。

有趣的是，如果AgentContact和AuditContact都已设置为Contact中的任何现有值，而不是NULL，则更新正常。这让我相信它可能是一个外/内连接问题。这是我的SecurityContacts表的代码：

/**
 * The persistent class for the SecurityContact database table.
 * 
 */
@Entity
@FXClass(kind=FXClassKind.REMOTE)
public class SecurityContact implements Serializable {
    private static final long serialVersionUID = 1L;
    @Transient private String uid;
    @FXIgnore
    public String getUid() {
        if (uid == null) {
            uid = "" + securityContactId;
        }
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="securityContact_id")
    private Long securityContactId;

    @Column(name="security_id")
    private String securityId;

    @Column(name="create_date")
    private String createDate;

    @Column(name="create_user")
    private String createUser;

    @Column(name="modify_date")
    private String modifyDate;

    @Column(name="modify_user")
    private String modifyUser;

    //bi-directional many-to-one association to AgentContact

    @ManyToOne
    @JoinColumn(name="agent_id", referencedColumnName="contact_id")
    private AgentContact agentContact;

    //bi-directional many-to-one association to AuditContact
    @ManyToOne
    @JoinColumn(name="audit_id", referencedColumnName="contact_id")
    private AgentContact auditContact;

    public SecurityContact() {
    }
    @FXKeyColumn
    public Long getSecurityContactId() {
        return this.securityContactId;
    }

    public void setSecurityContactId(Long securityContactId) {
        this.securityContactId = securityContactId;
    }

    public String getSecurityId() {
        return this.securityId;
    }

    public void setSecurityId(String securityId) {
        this.securityId = securityId;
    }

    public String getCreateDate() {
        return this.createDate;
    }

    public void setCreateDate(String createDate) {
        this.createDate = createDate;
    }

    public String getCreateUser() {
        return this.createUser;
    }

    public void setCreateUser(String createUser) {
        this.createUser = createUser;
    }

    public String getModifyDate() {
        return this.modifyDate;
    }

    public void setModifyDate(String modifyDate) {
        this.modifyDate = modifyDate;
    }

    public String getModifyUser() {
        return this.modifyUser;
    }

    public void setModifyUser(String modifyUser) {
        this.modifyUser = modifyUser;
    }
    @FXManyToOne(parent="parent", property="contactId")
    public AgentContact getAgentContact() {
        return this.agentContact;
    }

    public void setAgentContact(AgentContact agentContact) {
        this.agentContact = agentContact;
    }
    @FXManyToOne(parent="parent", property="contactId")
    public AgentContact getAuditContact() {
        return this.auditContact;
    }

    public void setAuditContact(AgentContact auditContact) {
        this.auditContact = auditContact;
    }

}

以下是我的联系人表格的代码：

/**
 * The persistent class for the AgentContact database table.
 * 
 */
@Entity
@FXClass(kind=FXClassKind.REMOTE)
public class AgentContact implements Serializable {
    private static final long serialVersionUID = 1L;
    @Transient private String uid;
    @FXIgnore
    public String getUid() {
        if (uid == null) {
            uid = "" + contactId;
        }
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="contact_id")
    private Long contactId;

    @ManyToOne
    @JoinColumn(name="bank_id")
    private Bank bank;

    @Column(name="create_date")
    private String createDate;

    @Column(name="create_user")
    private String createUser;

    private String email;

    private String fax;

    @Column(name="modify_date")
    private String modifyDate;

    @Column(name="modify_user")
    private String modifyUser;

    private String name;

    private String phone;

    //bi-directional many-to-one association to SecurityContact
    @OneToMany(mappedBy="agentContact")
    private Set<SecurityContact> securityContacts;


    public AgentContact() {
    }
    @FXKeyColumn
    public Long getContactId() {
        return this.contactId;
    }

    public void setContactId(Long contactId) {
        this.contactId = contactId;
    }
    @FXManyToOne(parent="parent", property="bankId")
    public Bank getBank() {
        return this.bank;
    }

    public void setBank(Bank bank) {
        this.bank = bank;
    }

    public String getCreateDate() {
        return this.createDate;
    }

    public void setCreateDate(String createDate) {
        this.createDate = createDate;
    }

    public String getCreateUser() {
        return this.createUser;
    }

    public void setCreateUser(String createUser) {
        this.createUser = createUser;
    }

    public String getEmail() {
        return this.email;
    }

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

    public String getFax() {
        return this.fax;
    }

    public void setFax(String fax) {
        this.fax = fax;
    }

    public String getModifyDate() {
        return this.modifyDate;
    }

    public void setModifyDate(String modifyDate) {
        this.modifyDate = modifyDate;
    }

    public String getModifyUser() {
        return this.modifyUser;
    }

    public void setModifyUser(String modifyUser) {
        this.modifyUser = modifyUser;
    }

    public String getName() {
        return this.name;
    }

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

    public String getPhone() {
        return this.phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }
    @FXOneToMany(fillArguments="contactId")
    public Set<SecurityContact> getSecurityContacts() {
        return this.securityContacts;
    }

    public void setSecurityContacts(Set<SecurityContact> securityContacts) {
        this.securityContacts = securityContacts;
    }


}

很抱歉这么啰嗦。有人有什么想法吗？

Answer 1

这一切对我来说都很正常。我怀疑问题可能出在加载/保存/更新的代码中。我测试了您的实体的精简版本，并将一个审核联系人添加到一个尚未正常工作的安全联系人。您可以take a look at the code on github，或者只是克隆项目并自行运行：

git clone git://github.com/zzantozz/testbed.git tmp
cd tmp
mvn compile exec:java -Dexec.mainClass=rds.hibernate.MultipleManyToOnes -pl hibernate-multi-many-to-ones

但是，您可能会遇到其他问题。 AgentContact类上的@OneToMany(mappedBy="agentContact")仅包含将此AgentContact作为其agentContact属性的SecurityContacts，而不包含将其作为auditContact的任何属性。此外，如果只是use a NamingStrategy，所有@Column(name="name with underscores")废话都可以解除。随Hibernate提供的ImprovedNamingStrategy已经为您进行了下划线分隔的驼峰式转换。

Hibernate不匹配数据库中的值

1 个答案: