Jpa 如何使用构造函数创建查询

我必须从从数据库检索数据的查询中创建一个对象列表，并进行一些修改以正确显示它

例如，我有一张桌子

---

Id | m1 | m2 | m3 | m4 | m5 | m6 | m8 | m9 | m10 | m11 | m12| 1 | janvier | mars | juillet | december | null | null | null | null | null | null | null|

---

这说明了如何将行显示到my DB中 我想对每一行重新排序，以获得要创建的列表中的正确位置 这应该怎么显示呢

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Id | m1 | m2 | m3 | m4 | m5 | m6 | m8 | m9 | m10 | m11 | m12| 1 | 1 | null | null | 1 | null | 1 | null | null | 1|

---

这意味着如果他找到了“詹维尔”，他将在第一栏中放1 如果他找到十二月，他会在第12栏

到目前为止，我创建了名为visite的实体：

 package model;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;

@Entity
@NamedQueries({ @NamedQuery(name = "Visite.findAll", query = "select o from Visite o") })
public class Visite implements Serializable {
    private static final long serialVersionUID = -6069673717468618734L;
    @Column(length = 4000)
    private String annee;
    @Column(nullable = false, length = 100)
    private String client;
    @Column(length = 4000)
    private String dep;
    @Column(length = 4000)
    private String etat;
    @Id
    @Column(nullable = false, length = 100)
    private String idvisite;
    @Column(length = 4000)
    private String ingaff;
    @Column(length = 20)
    private String m1;
    @Column(length = 20)
    private String m10;
    @Column(length = 20)
    private String m11;
    @Column(length = 20)
    private String m12;
    @Column(length = 20)
    private String m2;
    @Column(length = 20)
    private String m3;
    @Column(length = 20)
    private String m4;
    @Column(length = 20)
    private String m5;
    @Column(length = 20)
    private String m6;
    @Column(length = 20)
    private String m7;
    @Column(length = 20)
    private String m8;
    @Column(length = 20)
    private String m9;
    @Column(length = 4000)
    private String moisvisite;
    @Column(length = 4000)
    private String nbvisites;
    @Column(length = 4000)
    private String prbvisite;

    public Visite() {
    }

    public Visite(String annee, String client, String dep, String etat, String idvisite, String ingaff, String m1,
                  String m10, String m11, String m12, String m2, String m3, String m4, String m5, String m6, String m7,
                  String m8, String m9, String moisvisite, String nbvisites, String prbvisite) {
        this.annee = annee;
        this.client = client;
        this.dep = dep;
        this.etat = etat;
        this.idvisite = idvisite;
        this.ingaff = ingaff;
        this.m1 = m1;
        this.m10 = m10;
        this.m11 = m11;
        this.m12 = m12;
        this.m2 = m2;
        this.m3 = m3;
        this.m4 = m4;
        this.m5 = m5;
        this.m6 = m6;
        this.m7 = m7;
        this.m8 = m8;
        this.m9 = m9;
        this.moisvisite = moisvisite;
        this.nbvisites = nbvisites;
        this.prbvisite = prbvisite;
    }

    public String getAnnee() {
        return annee;
    }

    public void setAnnee(String annee) {
        this.annee = annee;
    }

    public String getClient() {
        return client;
    }

    public void setClient(String client) {
        this.client = client;
    }

    public String getDep() {
        return dep;
    }

    public void setDep(String dep) {
        this.dep = dep;
    }

    public String getEtat() {
        return etat;
    }

    public void setEtat(String etat) {
        this.etat = etat;
    }

    public String getIdvisite() {
        return idvisite;
    }

    public void setIdvisite(String idvisite) {
        this.idvisite = idvisite;
    }

    public String getIngaff() {
        return ingaff;
    }

    public void setIngaff(String ingaff) {
        this.ingaff = ingaff;
    }

    public String getM1() {
        return m1;
    }

    public void setM1(String m1) {
        this.m1 = m1;
    }

    public String getM10() {
        return m10;
    }

    public void setM10(String m10) {
        this.m10 = m10;
    }

    public String getM11() {
        return m11;
    }

    public void setM11(String m11) {
        this.m11 = m11;
    }

    public String getM12() {
        return m12;
    }

    public void setM12(String m12) {
        this.m12 = m12;
    }

    public String getM2() {
        return m2;
    }

    public void setM2(String m2) {
        this.m2 = m2;
    }

    public String getM3() {
        return m3;
    }

    public void setM3(String m3) {
        this.m3 = m3;
    }

    public String getM4() {
        return m4;
    }

    public void setM4(String m4) {
        this.m4 = m4;
    }

    public String getM5() {
        return m5;
    }

    public void setM5(String m5) {
        this.m5 = m5;
    }

    public String getM6() {
        return m6;
    }

    public void setM6(String m6) {
        this.m6 = m6;
    }

    public String getM7() {
        return m7;
    }

    public void setM7(String m7) {
        this.m7 = m7;
    }

    public String getM8() {
        return m8;
    }

    public void setM8(String m8) {
        this.m8 = m8;
    }

    public String getM9() {
        return m9;
    }

    public void setM9(String m9) {
        this.m9 = m9;
    }

    public String getMoisvisite() {
        return moisvisite;
    }

    public void setMoisvisite(String moisvisite) {
        this.moisvisite = moisvisite;
    }

    public String getNbvisites() {
        return nbvisites;
    }

    public void setNbvisites(String nbvisites) {
        this.nbvisites = nbvisites;
    }

    public String getPrbvisite() {
        return prbvisite;
    }

    public void setPrbvisite(String prbvisite) {
        this.prbvisite = prbvisite;
    }
}

我创建了一个新对象，以便创建一个带有参数的构造函数，以便在会话bean中使用它

package model;

public class VisiteConstructeur {
    private String annee;
    private String client;
    private String dep;
    private String etat;
    private String idvisite;
    private String ingaff;
    private String m1;
    private String m10;

    private String m11;
    private String m12;
        private String m2;
    private String m3;
    private String m4;
    private String m5;
    private String m6;

    public void setAnnee(String annee) {
        this.annee = annee;
    }

    public String getAnnee() {
        return annee;
    }

    public void setClient(String client) {
        this.client = client;
    }

    public String getClient() {
        return client;
    }

    public void setDep(String dep) {
        this.dep = dep;
    }

    public String getDep() {
        return dep;
    }

    public void setEtat(String etat) {
        this.etat = etat;
    }

    public String getEtat() {
        return etat;
    }

    public void setIdvisite(String idvisite) {
        this.idvisite = idvisite;
    }

    public String getIdvisite() {
        return idvisite;
    }

    public void setIngaff(String ingaff) {
        this.ingaff = ingaff;
    }

    public String getIngaff() {
        return ingaff;
    }

    public void setM1(String m1) {
        this.m1 = m1;
    }

    public String getM1() {
        return m1;
    }

    public void setM10(String m10) {
        this.m10 = m10;
    }

    public String getM10() {
        return m10;
    }

    public void setM11(String m11) {
        this.m11 = m11;
    }

    public String getM11() {
        return m11;
    }

    public void setM12(String m12) {
        this.m12 = m12;
    }

    public String getM12() {
        return m12;
    }

    public void setM2(String m2) {
        this.m2 = m2;
    }

    public String getM2() {
        return m2;
    }

    public void setM3(String m3) {
        this.m3 = m3;
    }

    public String getM3() {
        return m3;
    }

    public void setM4(String m4) {
        this.m4 = m4;
    }

    public String getM4() {
        return m4;
    }

    public void setM5(String m5) {
        this.m5 = m5;
    }

    public String getM5() {
        return m5;
    }

    public void setM6(String m6) {
        this.m6 = m6;
    }

    public String getM6() {
        return m6;
    }

    public void setM7(String m7) {
        this.m7 = m7;
    }

    public String getM7() {
        return m7;
    }

    public void setM8(String m8) {
        this.m8 = m8;
    }

    public String getM8() {
        return m8;
    }

    public void setM9(String m9) {
        this.m9 = m9;
    }

    public String getM9() {
        return m9;
    }

    public void setMoisvisite(String moisvisite) {
        this.moisvisite = moisvisite;
    }

    public String getMoisvisite() {
        return moisvisite;
    }

    public void setNbvisites(String nbvisites) {
        this.nbvisites = nbvisites;
    }

    public String getNbvisites() {
        return nbvisites;
    }

    public void setPrbvisite(String prbvisite) {
        this.prbvisite = prbvisite;
    }

    public String getPrbvisite() {
        return prbvisite;
    }
    private String m7;
    private String m8;
    private String m9;
    private String moisvisite;
    private String nbvisites;
    private String prbvisite;
    public VisiteConstructeur(String annee, String client, String dep, String etat, String idvisite, String ingaff, String m1,
                  String m10, String m11, String m12, String m2, String m3, String m4, String m5, String m6, String m7,
                  String m8, String m9, String moisvisite, String nbvisites, String prbvisite) {


        this.annee = annee;
        this.client = client;
        this.dep = dep;
        this.etat = etat;
        this.idvisite = idvisite;
        this.ingaff = ingaff;
        this.m1 = m1;
        this.m10 = m10;
        this.m11 = m11;
        this.m12 = m12;
        this.m2 = m2;
        this.m3 = m3;
        this.m4 = m4;
        this.m5 = m5;
        this.m6 = m6;
        this.m7 = m7;
        this.m8 = m8;
        this.m9 = m9;
        this.moisvisite = moisvisite;
        this.nbvisites = nbvisites;
        this.prbvisite = prbvisite;
    }
}

这是我的函数，我被阻止来生成条件：

公共列表MyListResult（）{

查询=
em.createQuery（“从Visite o中选择o”）；
List rows=query.getResultList（）；
列表结果=新的ArrayList（rows.size（））；
对于（对象[]行：行）{
结果.添加（新的VisiteConstructeur（（字符串）行[0]，（字符串）行[1]，（字符串）行[2]，（字符串）行[3]，（字符串）行[4]，（字符串）行[5]，
（字符串）行[6]，（字符串）行[7]，（字符串）行[8]，（字符串）行[9]，
（字符串）行[10]，（字符串）行[11]，（字符串）行[12]，（字符串）行[13]，
（字符串）行[14]，（字符串）行[15]，（字符串）行[16]，（字符串）行[17]，
（字符串）行[18]，（字符串）行[19]，（字符串）行[20]）；
}
返回结果；

---

}使用以下代码

public List<VisiteConstructeur> MyListResult() {
     List<VisiteConstructeur> result=  em.createQuery("select new model.VisiteConstructeur(annee,client,dep,etat,idvisite,ingaff,m1,
                  m10,m11,m12,m2,m3,m4,m5,m6,m7,
                  m8,m9,moisvisite,nbvisites,prbvisite)from Visite").list();
    return result;
}

公共列表MyListResult（）{
列表结果=em.createQuery（“选择新模型。访问构造器（annee、client、dep、etat、idvisite、ingaff、m1、，
m10，m11，m12，m2，m3，m4，m5，m6，m7，
m8、m9、moisvisite、nbvisites、prbvisite）来自Visite”）.list（）；
返回结果；
}

谢谢您的帮助我的问题在这里如何分配1到m12如果有“行中的12月”您可以在查询或使用时使用用例您可以解释我吗？？我是javaem.createQuery的初学者（“从Visite中选择新的model.VisiteConstructeur（annee、client、dep、etat、idvisite、ingaff、m1、m10、m11，当m1=12月时，然后选择1个else null end、m2、m3、m4、m5、m6、m7、m8、m9、moisvisite、nbvisites、prbvisite”）。list（）；由以下原因引起：异常[EclipseLink-0]（Eclipse持久性服务-2.5.2.v20140319-9ad6abd）：org.Eclipse.Persistence.exceptions.JPQLException异常描述：语法错误解析[从Visite中选择新模型.VisiteConstructeur（annee、client、dep、etat、idvisite、ingaff、m1、m10、m11、m2、m3、m4、m5、m6、m7、m8、m9、moisvisite、nbvisites、prbvisite）]。[170170]必须为范围变量声明提供标识变量。

public List<VisiteConstructeur> MyListResult() {
     List<VisiteConstructeur> result=  em.createQuery("select new model.VisiteConstructeur(annee,client,dep,etat,idvisite,ingaff,m1,
                  m10,m11,m12,m2,m3,m4,m5,m6,m7,
                  m8,m9,moisvisite,nbvisites,prbvisite)from Visite").list();
    return result;
}