entity 的特别用法

package com.heren.his.domain.entity.drug;

import javax.persistence.*;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;

@Entity
@Table(name="DRUG_PRESC_DETAIL_TEMP")
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class DrugPrescDetailTemp {

    @Id
    private DrugPrescDetailTempPK drugPrescDetailTempPK;

    @Column(name="PAYMENTS")
    private Double payments;

    @Column(name="DETAIL_NO")
    private String detailNo;

    @Column(name="ITEM_ID")
    private String itemId;

    @Transient
　　//指定属性或字段不是持久的。它用于为实体类、映射超类或可嵌入类的属性或字段进行注释。
    private String administration;

    public DrugPrescDetailTemp() {

    }

    public DrugPrescDetailTemp(DrugPrescDetailTempPK drugPrescDetailTempPK, Double payments, String detailNo, String itemId) {
        this.drugPrescDetailTempPK = drugPrescDetailTempPK;this.payments = payments;
        this.detailNo = detailNo;
        this.itemId = itemId;
    }

    public DrugPrescDetailTempPK getDrugPrescDetailTempPK() {
        return drugPrescDetailTempPK;
    }

    public void setDrugPrescDetailTempPK(DrugPrescDetailTempPK drugPrescDetailTempPK) {
        this.drugPrescDetailTempPK = drugPrescDetailTempPK;
    }
public Double getPayments() {
        return payments;
    }

    public void setPayments(Double payments) {
        this.payments = payments;
    }

    public String getDetailNo() {
        return detailNo;
    }

    public void setDetailNo(String detailNo) {
        this.detailNo = detailNo;
    }

    public String getItemId() {
        return itemId;
    }

    public void setItemId(String itemId) {
        this.itemId = itemId;
    }

    public void setAdministration(String administration) {
        this.administration = administration;
    }
}

public List<DrugPrescDetailTemp> queryInpPresc(String visitNo) {
　　　　List<DrugPrescDetailTemp> drugPrescDetailTempList = find(DrugPrescDetailTemp.class, "from DrugPrescDetailTemp dpdt where dpdt.prescNo =?1", prescNo);
       drugPrescDetailTempList.forEach(drugPrescDetailTemp -> {
       　　String administration = createQuery(String.class, "select administration from DrugOrderDetail dod where dod.orderId=?1", drugPrescDetailTemp.getItemNo()).getSingleResult();
                drugPrescDetailTemp.setAdministration(administration);
            });
        });
　　　　return drugPrescDetailTempList;
　　}