此 HQL 查询不适用于元素或成员，但本机查询可以

Question

I have a problem running this HQL query:

@Query("select m from Mesa m where not exists (" +
      " from ValesMaster v " +
      " where v.cobrado = false " +
      " and v.id.fecha = :fecha " +
      " and m.id in elements(v.mesas)) " )
List<Mesa> getAvailableTables(@Param("fecha") Date fecha);

When I use this native query everything is OK:

@Query(value = "SELECT m.* from mesas m where not exists (" +
      "SELECT DISTINCT unnest(mesas) AS umesas FROM vales_master vm " +
      "WHERE cobrado = false AND fecha = :fecha and m.id = any(vm.mesas))", nativeQuery = true)
   List<Mesa> getAvailableTables(@Param("fecha") Date fecha);

But I wanto to use HQL. These are my entities Mesa:

@Entity
@Table(name = "mesas")
public class Mesa implements Serializable {
   private static final long serialVersionUID = 1L;

   @Id
   @Column(unique = true, nullable = false)
   private Integer id;

   @Column(nullable = false)
   private Boolean activo;

   @Column(length = 16)
   private String nombre;

   @Column(nullable = false)
   private Boolean room;


   @ManyToOne
   @JoinColumn(name="id_station")
   private Estacion estacion;

   public Mesa() {
   }

   public Integer getId() {
      return this.id;
   }

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

   public Boolean getActivo() {
      return this.activo;
   }

   public void setActivo(Boolean activo) {
      this.activo = activo;
   }

   public String getNombre() {
      return this.nombre;
   }

   public void setNombre(String nombre) {
      this.nombre = nombre;
   }

   public Boolean getRoom() {
      return this.room;
   }

   public void setRoom(Boolean room) {
      this.room = room;
   }

   public Estacion getEstacion() {
      return estacion;
   }

   public void setEstacion(Estacion estacion) {
      this.estacion = estacion;
   }
}

and ValesMaster:

@TypeDef(
        name = "string-array",
        typeClass = StringArrayType.class
)
@TypeDef(
        name = "int-array",
        typeClass = IntArrayType.class
)
@Entity
@Table(name = "vales_master")
public class ValesMaster implements Serializable {
   private static final long serialVersionUID = 1L;

   @EmbeddedId
   private ValesMasterPK id;

   @Column(length = 128)
   private String cliente;

   @Column(nullable = false)
   private Boolean closed;

   @Column(nullable = false)
   private Boolean cobrado;

   @Column(name = "cod_vip_clients", length = 16)
   private String codVipClients;

   private Integer comensales;

   @Column(nullable = false, precision = 131089)
   @ColumnDefault("0.00")
   private BigDecimal descuento;

   @Column(name = "descuento_porciento", nullable = false, precision = 131089)
   @ColumnDefault("0.00")
   private BigDecimal descuentoPorciento;

   private Integer disco;

   private Integer foreigners;

   @Column(name = "id_cajero")
   private Integer idCajero;

   @Column(name = "id_dependiente")
   private Integer idDependiente;

   @Column(name = "id_payment")
   private Integer idPayment;

   @Column(nullable = false, precision = 131089)
   @ColumnDefault("0.00")
   private BigDecimal impuestos;

   @Column(name = "impuestos_porciento", nullable = false, precision = 131089)
   @ColumnDefault("0.00")
   private BigDecimal impuestosPorciento;

   @Column(name = "is_discount_percent", nullable = false)
   @ColumnDefault("true")
   private Boolean isDiscountPercent;

   @Column(name = "is_printed", nullable = false)
   @ColumnDefault("false")
   private Boolean isPrinted;

   @Type(type = "int-array")
   private int[] mesas;

   (...)

Any idea why this HQL Query give a "java.lang.NullPointerException" at build stage? The problem is with this section:

" and m.id in elements(v.mesas) ) "

And I think maybe is because int-array type definition, but I really want to work with my HQL Query. Any idea? member of doesn't work neither. BTW excuse my poor english. Is not my native language.

Thanks in advance,

CarlosM

Answer 1

You are missing to end your @Query and your subquery. Try this and lets see what will happen next.

@Query("select m from Mesa m where not exists (" +
      " from ValesMaster v " +
      " where v.cobrado = false " +
      " and v.id.fecha = :fecha " +
      " and m.id in elements(v.mesas) )")
List<Mesa> getAvailableTables(@Param("fecha") Date fecha);

Cheers!