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我有一个现有的 JPA 实体（“引用”），其 ID 列作为其从基类“BaseEntity”继承的主键（使用超类上的 @MappedSuperclass 注释）。

我在引用和另一个名为 Violation 的实体之间也有 1-M 关系。违规以前是使用外键“REFERENCE_ID”定义的，指向参考实体的“ID”列。

最近，我尝试在 Reference 实体中添加一个不相关的复合键。这不应该影响参考和违规之间的 1-M 关系。但是，当我在我的 tomcat 服务器中运行代码时，我会看到以下堆栈跟踪：

引起：org.hibernate.AnnotationException：org.qcri.copydetection.sdk.metastore.entity.Violation.reference 的 referencedColumnNames(ID) 引用 org.qcri.copydetection.sdk.metastore.entity.Reference 未映射到单个属性org.hibernate.cfg.BinderHelper.createSyntheticPropertyReference(BinderHelper.java:205) ~[hibernate-annotations-3.5.6-Final.jar:3.5.6-Final] at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java :110) ~[hibernate-annotations-3.5.6-Final.jar:3.5.6-Final] at org.hibernate.cfg.AnnotationConfiguration.processEndOfQueue(AnnotationConfiguration.java:541) ~[hibernate-annotations-3.5.6- Final.jar:3.5.6-Final] 在 org.hibernate.cfg.AnnotationConfiguration.processFkSecondPassInOrder(AnnotationConfiguration.java:523) ~[hibernate-annotations-3.5.6-Final.jar:3.5.6-Final] 在 org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:380) ~[hibernate-annotations-3.5.6-Final.jar:3.5.6-Final] 在 org.hibernate.cfg.Configuration。 buildMappings(Configuration.java:1206) ~[hibernate-core-3.5.6-Final.jar:3.5.6-Final] at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1459) ~[hibernate-entitymanager -3.5.6-Final.jar:3.5.6-Final] 在 org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193) ~[hibernate-entitymanager-3.5.6-Final.jar:3.5.6- Final] at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1086) ~[hibernate-entitymanager-3.5.6-Final.jar:3.5.6-Final] at org.hibernate.ejb.Ejb3Configuration.configure( Ejb3Configuration.java:685) ~[hibernate-entitymanager-3.5.6-Final.jar:3.5.6-Final] 在 org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73) ~[hibernate-entitymanager-3.5.6-Final.jar:3.5.6-Final] 在 org.springframework。 orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:268) ~[spring-orm-3.1.2.RELEASE.jar:3.1.2.RELEASE] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java :310)~[spring-orm-3.1.2.RELEASE.jar:3.1.2.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)~[spring-beans- 3.1.2.RELEASE.jar:3.1.2.RELEASE] 在 org.springframework.beans.factory.support。AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) ~[spring-beans-3.1.2.RELEASE.jar:3.1.2.RELEASE] ...省略了39个常用框架

以下是所涉及的 3 个类的代码：

@Entity
@Table(name = "REFERENCE")
@XmlRootElement
@XmlAccessorType(XmlAccessType.PROPERTY)
@IdClass(Reference.ContextualName.class)
public class Reference extends BaseEntity {

@Column(name= "LOCATION", unique=true)
@XmlElement
private String location;

@Id
@AttributeOverrides({
    @AttributeOverride(name = "name", column = @Column(name = "NAME")),
    @AttributeOverride(name = "account", column = @Column(name = "ACCOUNT_ID"))
})

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

@ManyToOne(optional=false)
@XmlTransient
@JoinColumn(name = "ACCOUNT_ID", referencedColumnName = "ID")
private Account account;


public String getLocation() {
    return location;
}

public void setLocation(String location) {
    this.location = location;
}

public Reference() {}

public Reference(String name) {
    setName(name);
}

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

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

public Account getAccount() {
    return this.account;
}

public void setAccount(Account account) {
    this.account = account;
}

@Embeddable
private class ContextualName implements Serializable {
    private static final long serialVersionUID = -3687389984589209378L;

    @Basic(optional = false)
    @Column(name = "NAME")
    @XmlElement
    private String name;

    @ManyToOne(optional=false)
    @XmlTransient
    @JoinColumn(name = "ACCOUNT_ID", referencedColumnName = "ID")
    private Account account;

    ContextualName() {}
}
}

@MappedSuperclass
@XmlAccessorType(XmlAccessType.FIELD)
public abstract class BaseEntity {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "ID")
@XmlElement
private Long id;

@Basic(optional = true)
@Column(name = "CREATED", insertable = false, updatable = false, columnDefinition="TIMESTAMP DEFAULT CURRENT_TIMESTAMP")
@Temporal(TemporalType.TIMESTAMP)
@XmlElement
private Date creationDate;

protected BaseEntity() {}

public Long getId() {
    return id;
}

public void setId(Long id) {
    if(this.id==null) {
        this.id = id;
    } else if (this.id!=id) {
        throw new IllegalArgumentException("Cannot change the id after it has been set, as it is a generated field.");
    }
}

public Date getCreationDate() {
    return creationDate;
}

public void setCreationDate(Date creationDate) {
    if(this.creationDate==null) {
        this.creationDate = creationDate;
    } else if (this.creationDate!=creationDate) {
        throw new IllegalArgumentException("Cannot change the creation-date after it has been set, as it is a generated field.");
    }
}
}

@Entity
@Table(name = "VIOLATION")
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Violation extends BaseEntity {

@ManyToOne (optional=false, fetch= FetchType.EAGER)
@JoinColumn(name = "REFERENCE_ID", referencedColumnName = "ID")
private Reference reference;

@ManyToOne (optional=false, fetch= FetchType.EAGER)
@JoinColumn(name = "SUSPECT_ID", referencedColumnName = "ID")
private Suspect suspect;

@ManyToOne (optional=false, fetch= FetchType.EAGER)
@XmlTransient
@JoinColumn(name = "SEARCH_ID", referencedColumnName = "ID")
private Search search;

@Basic(optional = false)
@Column(name = "SCORE")
@XmlElement
private double score;

public Violation() {}

public Violation(Search search, Reference ref, Suspect sus, double score) {
    this.search = search;
    this.reference = ref;
    this.suspect = sus;
    this.score = score;
}

public double getScore() {
    return score;
}

public void setScore(double score) {
    this.score = score;
}

public Reference getReference() {
    return reference;
}

public void setReference(Reference reference) {
    this.reference = reference;
}

public Suspect getSuspect() {
    return suspect;
}

public void setSuspect(Suspect suspect) {
    this.suspect = suspect;
}

public Search getSearch() {
    return search;
}

public void setSearch(Search search) {
    if(this.search!=null && this.search!=search) {
        this.search.removeViolation(this);
    }
    this.search = search;
    if(search!=null) {
        if(!search.getViolations().contains(this)) {
            search.addViolation(this);
        }
    }
}
}

长话短说，我完全不知道如何将复合键添加到已经具有 ID 列的现有（旧）实体。我无法删除 ID 列，也无法更改 Reference 和 Violation 之间的 1-M 关系。我一生都无法理解错误消息，因为 Violation 实体的“REFERENCE_ID”外键列被映射到引用实体的单个“ID”列。

提前谢谢了！

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0 回答 0