JPQL 查询未获取字段元素集合

Question

我正在尝试编写查询，有这样一个实体（想通过 JPQL 访问 ContactHistory 元素）：

主要本质：

@Entity(name = "wld$ContractHistoryWorkProcess")
public class ContractHistoryWorkProcess extends BaseLongIdEntity {
    private static final long serialVersionUID = -3892104583318515811L;

    private static  final  double RATIO = 0.94;
    private static final double MINUTES_IN_HOUR = 60F;

    @NotNull
    @Lookup(type = LookupType.DROPDOWN)
    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "CONTRACT_CUSTOMER_FACILITY_ID")
    private ContractCustomerFacility customerFacility; // до
     ..................................................
    @Deprecated
    @NotNull
    @Lookup(type = LookupType.DROPDOWN)
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "CONTRACT_HISTORY_ID")
    protected ContractHistory contractHistory;
----------------------------------------------------------

询问：

LoadContext.Query query = LoadContext.createQuery( "select wp from wld$ContractHistoryWorkProcess wp JOIN wp.contractHistory h where h." );

问题是提示不起作用，好像加入不起作用