HQL查詢條件查詢

我有這句話這是正常工作的HQL：HQL查詢條件查詢

字符串的queryString =

"SELECT gmr.id.expedientId.idEns as idEns," 
      + " gmr.id.expedientId.anyExp as anyExp," 
      + " gmr.id.expedientId.numExp as numExp," 
      + " gmr.id.numOrdre as numOrdre," 
      + " gmr.idRecursRebuig.desRecursRebuig as descripcioRebuig," 
      + " gmr.desAmpliRebuig as observacionsRebuig," 
      + " gmr.tipusRebuig as tipusRebuig" 
      + " FROM GirMotiuRebuig gmr" 
      + " where gmr.id.expedientId.idEns =:idEns and" 
      + " gmr.id.expedientId.anyExp =:anyExp and" 
      + " gmr.id.expedientId.numExp =:numExp" 
      + " ORDER BY gmr.id.numOrdre"; 

      Query queryObject = getSessionFactory().getCurrentSession() 
        .createQuery(queryString); 

      queryObject.setResultTransformer(Transformers 
        .aliasToBean(MotiusRebuig.class)); 

      queryObject.setParameter("idEns",clauExpedient.getIdEns()); 
      queryObject.setParameter("anyExp",clauExpedient.getAnyExp()); 
      queryObject.setParameter("numExp",clauExpedient.getNumExp()); 

      llistaMotiusRebuig =queryObject.list();

和我的標準版本：

Criteria consulta = this.getSessionFactory().getCurrentSession() 
    .createCriteria(GirMotiuRebuig.class) 
    .add(Restrictions.eq("id.expedientId.idEns", clauExpedient.getIdEns())) 
    .add(Restrictions.eq("id.expedientId.anyExp", clauExpedient.getAnyExp())) 
    .add(Restrictions.eq("id.expedientId.numExp", clauExpedient.getNumExp())) 
    .addOrder(Order.asc("id.numOrdre")) 
    .setProjection(Projections.projectionList() 
    .add(Projections.property("id.expedientId.idEns"),"idEns") 
    .add(Projections.property("id.expedientId.anyExp"),"anyExp") 
    .add(Projections.property("id.expedientId.numExp"),"numExp") 
    .add(Projections.property("id.numOrdre"),"numOrdre") 
     .add(Projections.property("idRecursRebuig.desRecursRebuig"),"descripcioRebuig") 
    .add(Projections.property("desAmpliRebuig"),"observacionsRebuig") 
    .add(Projections.property("tipusRebuig"),"tipusRebuig") 
    .add(Projections.property("expedientId.numOrdre"),"numOrdre")) 
       .setResultTransformer(
       Transformers.aliasToBean(MotiusRebuig.class)); 
    llistaMotiusRebuig = consulta.list();

和異常：

Caused by: org.hibernate.QueryException: could not resolve property: idRecursRebuig.desRecursRebuig of: cat.base.gir.logica.domini.impl.GirMotiuRebuig 
     at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:44) 
     at org.hibernate.persister.entity.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:38) 
     at org.hibernate.persister.entity.AbstractEntityPersister.toType(AbstractEntityPersister.java:1362) 
     at org.hibernate.loader.criteria.CriteriaQueryTranslator.getType(CriteriaQueryTranslator.java:477) 
     at org.hibernate.criterion.PropertyProjection.getTypes(PropertyProjection.java:36) 
     at org.hibernate.criterion.AliasedProjection.getTypes(AliasedProjection.java:37) 
     at org.hibernate.criterion.ProjectionList.getTypes(ProjectionList.java:38) 
     at org.hibernate.loader.criteria.CriteriaQueryTranslator.getProjectedTypes(CriteriaQueryTranslator.java:318) 
     at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:77) 
     at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:59) 
     at org.hibernate.loader.criteria.CriteriaLoader.<init>(CriteriaLoader.java:67) 
     at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1550) 
     at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283) 
     at cat.base.gir.dao.GirMotiuRebuigDao.obtenirMotiusRebuig(GirMotiuRebuigDao.java:73) 
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
     at java.lang.reflect.Method.invoke(Method.java:597) 
     at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) 
     at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) 
     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 
     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
     at $Proxy1183.obtenirMotiusRebuig(Unknown Source) 
     at cat.base.gir.serveis.GirRecursService.obtenirMotiusRebuig(GirRecursService.java:381) 
     ... 127 more

實體： GirMotiuRebuig

@Entity 
@Table(name = "gir_exp_motiu_rebuig") 
public class GirMotiuRebuig implements IGirMotiuRebuig { 

    /** 
    * 
    */ 
    private static final long serialVersionUID = -5587115692447683913L; 

    private ExpedientIdMultiple id; 
    private MRecursRebuig idRecursRebuig; 
    private String desAmpliRebuig; 
    private GirExpedient expedientGir; 
    protected Integer tipusRebuig; 

    public GirMotiuRebuig() { 
    } 

    public GirMotiuRebuig(ExpedientIdMultiple id, MRecursRebuig idRecursRebuig, String desAmpliRebuig, 
      GirExpedient expedientGir) { 
     this.id = id; 
     this.idRecursRebuig = idRecursRebuig; 
     this.desAmpliRebuig = desAmpliRebuig; 
     this.expedientGir = expedientGir; 
    } 

    @EmbeddedId 
    @AttributeOverrides({ 
      @AttributeOverride(name = "expedientId.idEns", column = @Column(name = "id_ens", nullable = false, precision = 5, scale = 0)), 
      @AttributeOverride(name = "expedientId.anyExp", column = @Column(name = "any_exp", nullable = false, precision = 4, scale = 0)), 
      @AttributeOverride(name = "expedientId.numExp", column = @Column(name = "num_exp", nullable = false, precision = 10, scale = 0)), 
      @AttributeOverride(name = "numOrdre", column = @Column(name = "num_ordre", nullable = false, precision = 10, scale = 0)) }) 
    public ExpedientIdMultiple getId() { 
     return id; 
    } 

    public void setId(ExpedientIdMultiple id) { 
     this.id = id; 
    } 

    @OneToOne(fetch = FetchType.LAZY) 
    @JoinColumn(name = "id_recurs_rebuig") 
    public MRecursRebuig getIdRecursRebuig() { 
     return idRecursRebuig; 
    } 

    public void setIdRecursRebuig(MRecursRebuig idRecursRebuig) { 
     this.idRecursRebuig = idRecursRebuig; 
    } 

    @Column(name = "des_ampli_rebuig", nullable = false, length = 250) 
    public String getDesAmpliRebuig() { 
     return desAmpliRebuig; 
    } 

    public void setDesAmpliRebuig(String desAmpliRebuig) { 
     this.desAmpliRebuig = desAmpliRebuig; 
    } 

    @ManyToOne(fetch = FetchType.LAZY) 
    @JoinColumns({ 
      @JoinColumn(name = "id_ens", referencedColumnName = "id_ens", nullable = false, insertable = false, updatable = false), 
      @JoinColumn(name = "any_exp", referencedColumnName = "any_exp", nullable = false, insertable = false, updatable = false), 
      @JoinColumn(name = "num_exp", referencedColumnName = "num_exp", nullable = false, insertable = false, updatable = false) }) 
    public GirExpedient getExpedientGir() { 
     return expedientGir; 
    } 

    public void setExpedientGir(GirExpedient expedientGir) { 
     this.expedientGir = expedientGir; 
    } 

    @Column(name = "tipus_rebuig", nullable = false) 
    public Integer getTipusRebuig() { 
     return tipusRebuig; 
    } 

    public void setTipusRebuig(Integer tipusRebuig) { 
     this.tipusRebuig = tipusRebuig; 
    }

好，這個標準的工作：

Criteria consulta = this.getSessionFactory().getCurrentSession() 
       .createCriteria(GirMotiuRebuig.class, "g") 
        .add(Restrictions.eq("g.id.expedientId.idEns", clauExpedient.getIdEns())) 
        .add(Restrictions.eq("g.id.expedientId.anyExp", clauExpedient.getAnyExp())) 
        .add(Restrictions.eq("g.id.expedientId.numExp", clauExpedient.getNumExp())) 
        .addOrder(Order.asc("g.id.numOrdre")) 
       .setProjection(Projections.projectionList() 
         .add(Projections.property("g.id.expedientId.idEns"),"idEns") 
         .add(Projections.property("g.id.expedientId.anyExp"),"anyExp") 
         .add(Projections.property("g.id.expedientId.numExp"),"numExp") 
         .add(Projections.property("g.desAmpliRebuig"),"observacionsRebuig") 
         .add(Projections.property("g.id.numOrdre"),"numOrdre") 
         .add(Projections.property("g.tipusRebuig"),"tipusRebuig") 
         ) 
       .setResultTransformer(
         Transformers.aliasToBean(MotiusRebuig.class)); 
     llistaMotiusRebuig = consulta.list();

，但是當我嘗試攻擊「idRecursRebuig.desRecursRebuig爲descripcioRebuig」像：

Criteria consulta = this.getSessionFactory().getCurrentSession() 
        .createCriteria(GirMotiuRebuig.class, "g") 
         .add(Restrictions.eq("g.id.expedientId.idEns", clauExpedient.getIdEns())) 
         .add(Restrictions.eq("g.id.expedientId.anyExp", clauExpedient.getAnyExp())) 
         .add(Restrictions.eq("g.id.expedientId.numExp", clauExpedient.getNumExp())) 
         .addOrder(Order.asc("g.id.numOrdre")) 
        .setProjection(Projections.projectionList() 
          .add(Projections.property("g.id.expedientId.idEns"),"idEns") 
          .add(Projections.property("g.id.expedientId.anyExp"),"anyExp") 
          .add(Projections.property("g.id.expedientId.numExp"),"numExp") 
          .add(Projections.property("g.desAmpliRebuig"),"observacionsRebuig") 
          .add(Projections.property("g.id.numOrdre"),"numOrdre") 
          .add(Projections.property("g.tipusRebuig"),"tipusRebuig") 
          **.add(Projections.property("g.idRecursRebuig.desRecursRebuig"),"descripcioRebuig")** 
          ) 
        .setResultTransformer(
          Transformers.aliasToBean(MotiusRebuig.class)); 
      llistaMotiusRebuig = consulta.list();

查詢失敗...

nested exception is org.hibernate.QueryException: could not resolve property: idRecursRebuig.desRecursRebuig of: cat.base.gir.logica.domini.impl.GirMotiuRebuig

這樣：問題是，當我嘗試休養idRecurs ... so..i需要額外cafein ...

這是MRecursRebuig的映射：

@Entity 
@Table(name = "MRecursRebuig") 
public class MRecursRebuig implements IMRecursRebuig { 

    /** 
    * 
    */ 
    private static final long serialVersionUID = 7439723582297629986L; 

    private Integer idRecursRebuig; 
    private String desRecursRebuig; 
    private Integer tipusRebuig; 

    public MRecursRebuig() { 
    } 

    public MRecursRebuig(Integer idRecursRebuig, String desRecursRebuig) { 
     this.idRecursRebuig = idRecursRebuig; 
     this.desRecursRebuig = desRecursRebuig; 
    } 

    @Id 
    @Column(name = "id_recurs_rebuig", unique = true, nullable = false, precision = 22, scale = 0) 
    public Integer getIdRecursRebuig() { 
     return idRecursRebuig; 
    } 

    public void setIdRecursRebuig(Integer idRecursRebuig) { 
     this.idRecursRebuig = idRecursRebuig; 
    } 

    @Column(name = "des_recurs_rebuig", nullable = false, length = 100) 
    public String getDesRecursRebuig() { 
     return desRecursRebuig; 
    } 

    public void setDesRecursRebuig(String desRecursRebuig) { 
     this.desRecursRebuig = desRecursRebuig; 
    } 

    @Column(name = "tipus_rebuig", nullable = false) 
    public Integer getTipusRebuig() { 
     return tipusRebuig; 
    }

，如果我試試這個：

Criteria consulta = this.getSessionFactory().getCurrentSession() 
        .createCriteria(GirMotiuRebuig.class, "g") 
        .createAlias("g.idRecursRebuig", "idRecursRebuig") 
         .add(Restrictions.eq("g.id.expedientId.idEns", clauExpedient.getIdEns())) 
         .add(Restrictions.eq("g.id.expedientId.anyExp", clauExpedient.getAnyExp())) 
         .add(Restrictions.eq("g.id.expedientId.numExp", clauExpedient.getNumExp())) 
         .add(Restrictions.eq("g.idRecursRebuig", clauExpedient.getNumExp())) 
         .addOrder(Order.asc("g.id.numOrdre")) 
        .setProjection(Projections.projectionList() 
          .add(Projections.property("g.id.expedientId.idEns"),"idEns") 
          .add(Projections.property("g.id.expedientId.anyExp"),"anyExp") 
          .add(Projections.property("g.id.expedientId.numExp"),"numExp") 
          .add(Projections.property("g.desAmpliRebuig"),"observacionsRebuig") 
          .add(Projections.property("g.id.numOrdre"),"numOrdre") 
          .add(Projections.property("g.tipusRebuig"),"tipusRebuig") 
          **.add(Projections.property("idRecursRebuig.desRecursRebuig"),"descripcioRebuig")** 
          ) 
        .setResultTransformer(
          Transformers.aliasToBean(MotiusRebuig.class)); 
      llistaMotiusRebuig = consulta.list();

我收到：

nested exception is org.hibernate.PropertyAccessException: IllegalArgumentException occurred calling getter of cat.base.gir.logica.domini.impl.MRecursRebuig.idRecursRebuig 
    cat.base.gir.serveis.GirRecursService.obtenirMotiusRebuig(GirRecursService.java:387)

來源

2014-02-27 ZaoTaoBao

很難說什麼時候我們甚至不知道GirMotiuRebuig類是否包含desRecursRebuig財產。也許請檢查，如果這樣的財產存在那裏... – ppawel

well hql的句子的作品，但沒有在標準...所以財產存在，也許我不明白它是如何工作的。 – ZaoTaoBao

交換'.add（Projections.property（「idRecursRebuig.desRecursRebuig」），「descripcioRebuig」）與'。添加（Projections.property（「desAmpliRebuig」），「observacionsRebuig」），運行它，並告訴我們輸出是否改變。 – Floegipoky

在HQL查詢，當你有像

select entityA.entityB.foo from EntityA entityA ...

你實際上在EntityA和EntityB之間創建了一個隱式的內部聯接。它相當於

select entityB.foo from EntityA entityA 
inner join entityA.entityB entityB ...

在標準查詢中，您不能像在HQL中那樣鏈接屬性。相反，每次需要連接時，都必須使用subCriteria或（我的首選項）別名來明確地創建它。所以你需要做

Criteria consulta = this.getSessionFactory().getCurrentSession() 
    .createCriteria(GirMotiuRebuig.class, "girMotiuRebuig") 
    .createAlias("girMotiuRebuig.id.expedientId", "expedient") 
    .add(Restrictions.eq("expedient.idEns", clauExpedient.getIdEns())) 
    ...

請注意，你的設計和命名使你的代碼很難理解。您應該儘量避免使用組合鍵，並且您不應將名稱爲idRecursRebuig的字段實際上指定爲MRecursRebuig的實例，並且根本不是ID。

來源

2014-02-27 17:07:35

抱歉難以理解，明天我改變。 – ZaoTaoBao

很好，我每天更接近的猴子，最後的解決方案是：

Criteria consulta = this.getSessionFactory().getCurrentSession() 
        .createCriteria(GirMotiuRebuig.class, "g") 
        .createAlias("idRecursRebuig", "i") 
         .add(Restrictions.eq("g.id.expedientId.idEns", clauExpedient.getIdEns())) 
         .add(Restrictions.eq("g.id.expedientId.anyExp", clauExpedient.getAnyExp())) 
         .add(Restrictions.eq("g.id.expedientId.numExp", clauExpedient.getNumExp())) 
         .addOrder(Order.asc("g.id.numOrdre")) 
        .setProjection(Projections.projectionList() 
          .add(Projections.property("g.id.expedientId.idEns"),"idEns") 
          .add(Projections.property("g.id.expedientId.anyExp"),"anyExp") 
          .add(Projections.property("g.id.expedientId.numExp"),"numExp") 
          .add(Projections.property("g.desAmpliRebuig"),"observacionsRebuig") 
          .add(Projections.property("g.id.numOrdre"),"numOrdre") 
          .add(Projections.property("g.tipusRebuig"),"tipusRebuig") 
          .add(Projections.property("i.desRecursRebuig"),"descripcioRebuig") 
          ) 
        .setResultTransformer(
          Transformers.aliasToBean(MotiusRebuig.class)); 
      llistaMotiusRebuig = consulta.list();

來源

2014-02-28 13:19:37 ZaoTaoBao

HQL查詢條件查詢

回答

相關問題