Hibernate 映射异常 - 无法确定以下类型的类型: [英] Hibernate mapping exception - Could not determine type for:

问题描述

我正在尝试配置我的实体，但休眠会引发以下异常:

Im trying to configure my entities but hibernate throws the following exception:

org.hibernate.MappingException: Could not determine type for: com.sd.entity.SDUserProductAcess,   at table: SDUser, for columns: [org.hibernate.mapping.Column(productAccess)]
[PersistEngine] Failed to initialize persistence engine!java.lang.NullPointerException

这些是我的实体:

@Entity
@Inheritance(strategy = InheritanceType.JOINED)
public class SDObject
{

@Id
@GeneratedValue
private long sdId;
private String sdType;

public long getSdId()
{
    return sdId;
}

public void setSdId(long sdId)
{
    this.sdId = sdId;
}

public String getSdType()
{
    return sdType;
}

public void setSdType(String sdType)
{
    this.sdType = sdType;
}
}

下一个:

@Entity
public class SDUser extends SDObject
{

@Column(unique = true)
private String code;
private String password;
private SDUserProductAcess productAccess;

public String getCode()
{
    return code;
}

public void setCode(String code)
{
    this.code = code;
}

public String getPassword()
{
    return password;
}

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

@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
public SDUserProductAcess getProductAccess()
{
    return productAccess;
}

public void setProductAccess(SDUserProductAcess productAccess)
{
    this.productAccess = productAccess;
}

最后一个:

@Entity
public class SDUserProductAcess extends SDObject
{

private boolean adm;

public boolean isAdm()
{
    return adm;
}

public void setAdm(boolean adm)
{
    this.adm = adm;
}
}

Hibernate 无法确定位于 SDUser 实体中的列 productAccess 的类型.我是 Hibernate 的新手，无法弄清楚发生了什么.

Hibernate can't determine the type for column productAccess, located in SDUser entity. I'm new to Hibernate and I can't figure out what is happening.

我应该提供某种身份证明吗?

Should I provide some kind of ID?

谢谢！！

推荐答案

在SDUser中需要在SDUserAccess中添加关联信息:

In SDUser you need to add the association info on the SDUserAccess:

@ManyToOne
@JoinColumn(name = "sdId")
private SDUserProductAcess productAccess;

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