无法通过反射getter和查询来求和一个字段，以求纯Hibernate中的多列求和
[英]could not get a field value by reflection getter and query to sum multiple columns in pure Hibernate
问题描述
I have written this query but getting problem with this query. 
我已经写了这个查询，但是这个查询遇到了问题。 and i want to write that query in Hibernate. 我想在休眠中编写该查询。
Query getActivoCrtTotalquery = (Query) session
.createQuery("select sum(a.servicios_por_pagares)+sum(a.producto_en_processo)+sum(a.materia_prima)+sum(a.moteriales)+sum(a.marcaderia_en_transito)+sum(a.mercaderia)+sum(a.productos_terminado) from Activocrt_Master a where a.dni=:dni" );
getActivoCrtTotalquery.setParameter("dni", dni);
List list = getActivoCrtTotalquery.list();
result = (double) list.get(0);
session.close();
Exception : 例外情况 ：
org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.caja.creditprocess.hbmfiles.Doi_Master.dni at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:35) at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:183) at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:3596) at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:3312) at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:181) at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:218) at org.hibernate.type.EntityType.getIdentifier(EntityType.java:397) at org.hibernate.type.ManyToOneType.nullSafeSet(ManyToOneType.java:87) at org.hibernate.param.NamedParameterSpecification.bind(NamedParameterSpecification.java:38) at org.hibernate.loader.hql.QueryLoader.bindParameterValues(
My Entities are 我的实体是
@Entity
@Table(name="Activocrt_Master")
public class Activocrt_Master implements Serializable{
@Id
@Column(name="activocrt_master_id")
private String activocrt_master_id;
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name="dni")
private Doi_Master dni;
@Column(name="servicios_por_pagares")
private double servicios_por_pagares;
@Column(name="producto_en_processo")
private double producto_en_processo;
@Column(name="materia_prima")
private double materia_prima;
@Column(name="moteriales")
private double moteriales;
@Column(name="marcaderia_en_transito")
private double marcaderia_en_transito;
@Column(name="mercaderia")
private double mercaderia;
@Column(name="productos_terminado")
private double productos_terminado;
//setters and getters
}
Doi_Master.java Doi_Master.java
@Entity
@Table(name="Doi_Master")
public class Doi_Master implements Serializable{
@Id
@Column(name="dni")
private String dni;
//setters and getters
}
1 个解决方案
解决方案1
1 已采纳 2016-08-12 13:30:41
Finally i found the answer for my question. 终于我找到了我问题的答案。 In my query i added dni, but hibernate is confusing to take which dni. 在我的查询中，我添加了dni，但是休眠使哪个dni令人困惑。 i just changed private Doi_Master dni; 我刚刚更改了private Doi_Master dni; to private Doi_Master xyz; private Doi_Master xyz; so it worked for me.Thanks for the help.... 所以对我有用。谢谢您的帮助。
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