以下是我的JPA实体的片段。当我在JBOSS中使用Hibernate DB2方言运行它时,生成的select查询使用acctYymm而不是ACCT_YYMM导致-206异常。
@Column(name = "ACCT_YYMM")
public String getAcctYymm() {
return acctYymm;
}
SqlSyntaxErrorException:DB2 SQL错误:SQLCODE = -206,SQLSTATE = 42703,SQLERRMC = CARTUMLERE0 _。 ACCTYYMM ,DRIVER = 3.62.56
我尝试将命名策略更改为EJB3NamingStrategy和DefaultComponentSafeNamingStrategy,它们似乎都没有使用列名。在我实现EmbeddedId并加入两个表之前,我认为这个问题没有发生。可能有任何共同关系吗?
添加我的代码:
Car和Pool Entity共享PK embeddable class
@Embeddable
public class PK implements Serializable {
private String acctYymm;
private String carInit;
private String carNum;
@Column(name = "ACCT_YYMM", nullable = false, length = 4)
public String getAcctYymm() {
return acctYymm;
}
//skipping getters and setters
@Column(name = "CAR_INIT", nullable = false, length = 4)
public String getCarInit() {
return carInit;
}
@Column(name = "CAR_NUM", nullable = false, length = 6)
public String getCarNum() {
return carNum;
}
}
@Entity
@NamedQuery(name = "Car.findAll", query = "select umler from CarEntity umler join umler.poolEntity pool where umler.pk.acctYymm = :acctYymm and umler.pk.carInit = :carInit and umler.pk.carNum = :carNum")
@Table(name = "CART_UMLER", schema = "CARSCHEMA", catalog = "")
public class CarEntity implements Serializable{
@EmbeddedId
private PK pk = null;
public PK getPk() {
return pk;
}
public void setPk(PK pk) {
this.pk = pk;
}
@OneToOne
@PrimaryKeyJoinColumns({
@PrimaryKeyJoinColumn(name="ACCT_YYMM", referencedColumnName="ACCT_YYMM"),
@PrimaryKeyJoinColumn(name="CAR_INIT", referencedColumnName="CAR_INIT"),
@PrimaryKeyJoinColumn(name="CAR_NUM", referencedColumnName="CAR_NUM")
})
private PoolEntity poolEntity;
private String carTyp;
@Basic
@Column(name = "CAR_TYP", nullable = false, length = 1)
public String getCarTyp() {
return carTyp;
}
//skipping getters and setters
}
@Entity
@Table(name = "POOL", schema = "CARSCHEMA", catalog = "")
public class PoolEntity implements Serializable{
@EmbeddedId
private PK pk = null;
public PK getPk() {
return pk;
}
public void setPk(PK pk) {
this.pk = pk;
}
private String poolCd;
@Basic
@Column(name = "POOL_CD", nullable = false, length = 7)
public String getPoolCd() {
return poolCd;
}
public void setPoolCd(String poolCd) {
this.poolCd = poolCd;
}
}
答案 0 :(得分:0)
如果仔细查看映射,您会发现混合属性和基于字段的访问权限。
您需要将@EmbeddedId
注释从字段移动到属性:
private PK pk = null;
@EmbeddedId
public PK getPk() {
return pk;
}
适用于PoolEntity poolEntity;
和PoolEntity
pk
属性。
你需要对这些映射保持一致,否则,Hibernate不会找到它们。