package com.abc.def.model;
import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Entity;
import javax.persistence.Embeddable;
import javax.persistence.IdClass;
import java.util.Date;
import java.io.Serializable;
@NamedNativeQuery(name="getMetadata",query="
select a.name alias1,a.fullname alias2,
b.name alias3,b.age alias4,
c.height alias5,c.something alias6,
d.otherthing alias7
from lame_table_name a,
lame_table_name_2 b
where a.id = b.id
and b.id = c.id
and c.id = d.id
and d.id = :namedparameter
order by a.index,b.index
",
resultClass=MetadataModel.class)
@Entity
@IdClass(SomeIdClass.class)
public class MetadataModel{
@Id @Column("alias1")
private Type alias1property;
@Id @Column("alias2")
private Type2 alias2property;
@Column("alias3")
private Type3 alias3property;
//getters and setters
}
@Embeddable
class SomeIdClass implements Serializable{
//serialVersionUID line
@Id @Column("alias1")
private Type alias1property;
@Id @Column("alias2")
private Type2 alias2property;
//getter and setters
}
错误是SQL-17006,无效的列名,一整天都在尝试此设置的变体 我应该尝试使用Column(“lame_table_name.name”)
我也尝试过使用SqlResultSetMapping(并从POJO的字段中删除@Column)(并在SqlResultSetMapping的columns属性中指定所有列别名)(我们应该在通过setResultSetMapping方法执行查询时再次指定结果集映射) SQLQuery接口?)
package com.abc.def.model;
import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Entity;
import javax.persistence.Embeddable;
import javax.persistence.IdClass;
import java.util.Date;
import java.io.Serializable;
//other imports for the SqlResultSetMapping
@NamedNativeQuery(name="getMetadata",query="
select a.name alias1,a.fullname alias2,
b.name alias3,b.age alias4,
c.height alias5,c.something alias6,
d.otherthing alias7
from lame_table_name a,
lame_table_name_2 b
where a.id = b.id
and b.id = c.id
and c.id = d.id
and d.id = :namedparameter
order by a.index,b.index
",
resultSetMapping="metaDataMapping")
@SqlResultSetMapping(name="metaDataMapping",
entities=@EntityResult(entityClass=MetadataModel.class,
fields = {@FieldResult(name="alias1Property",column="alias1")
//so on
}
)
)
@Entity
@IdClass(SomeIdClass.class)
public class MetadataModel{
private Type alias1property;
private Type2 alias2property;
private Type3 alias3property;
//getters and setters
}
//composite class, exactly as above
答案 0 :(得分:13)
我们应该在oracle的Select列表中包含所有表列。 如果我们只保留几列。 例如, 你的表Employee有列FirstName,LastName,EmpId, 如果您有查询,请。
session.createSQLQuery("Select FirstName from Employee");
以上查询无效。它将抛出无效列错误异常。 因此,最好将所有列放在Oracle的Select子句中。
礼貌: one answer 谢谢, 拉杰什。
答案 1 :(得分:0)
请尝试使用@Column(name = "myprop")
。另请注意,Type / Type2 / Type3必须是Simple类型(通常为Integer / Long / String / Date)。
答案 2 :(得分:0)
好吧,早些时候我试图在resultsetmapping中指定列和实体属性,所以我尝试删除实体映射,保留columns属性,并调用aliastobean结果转换器,再加上写入setter来接受BigDecimal而不是很长(因为它是一个Oracle DB),解决了这个问题......