從另一個ejb獲取一個字段的值

-1

我想獲得另一個ejb的字段值這裏是我的示例我想從類（Visite）中獲取「CLient」的值，並在「ClientVisite 「在類（DateVisite）比在數據庫中堅持這個值。從另一個ejb獲取一個字段的值

這裏是我的代碼

package model.entitie; 

import java.io.Serializable; 

import java.util.Date; 

import javax.persistence.Column; 
import javax.persistence.ColumnResult; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 
import javax.persistence.NamedQueries; 
import javax.persistence.NamedQuery; 
import javax.persistence.SequenceGenerator; 
import javax.persistence.Temporal; 
import javax.persistence.TemporalType; 

import model.entitie.Visite; 

@Entity 
@NamedQueries({ @NamedQuery(name = "Datevisite.findAll", query = "select o from Datevisite o") }) 
@SequenceGenerator(name = "DateVisite_Id_Seq_Gen", sequenceName = "DATEVISITE_SEQ", allocationSize = 1, 
        initialValue = 50) 
public class Datevisite implements Serializable { 
    private static final long serialVersionUID = -341535626783197699L; 
    @Id 
    @Column(nullable = false, length = 4000) 
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "DateVisite_Id_Seq_Gen") 
    private String iddatevis; 
    @Temporal(TemporalType.DATE) 
    private Date jourvisite; 

    @ManyToOne 
    @JoinColumn(name = "VISITE_ID") 
    private Visite datevisite; 
    @Temporal(TemporalType.DATE) 
    @Column(name = "JOURVISITEEND") 
    private Date jourvisteend; 
    @Column(name = "DESCRPTION") 
    private String description; 
    @Column(name = "CLIENTVISITE") 
    private String ClientVisite; 


    public void setClientVisite(String ClientVisite) { 

     this.ClientVisite = ClientVisite; 

    } 

    public String getClientVisite() { 
     return ClientVisite; 
    } 

    public void setDescription(String description) { 
     this.description = description; 
    } 

    public String getDescription() { 
     return description; 
    } 

    public void setJourvisteend(Date jourvisteend) { 
     this.jourvisteend = this.jourvisite; 
    } 

    public Date getJourvisteend() { 
     return jourvisteend; 
    } 

    public Datevisite() { 
    } 

    public Datevisite(String iddatevis, Date jourvisite, Visite datevisite, String ClientVisite) { 
     this.iddatevis = iddatevis; 
     this.jourvisite = jourvisite; 
     this.datevisite = datevisite; 

     this.ClientVisite = ClientVisite; 

    } 

    public String getIddatevis() { 
     return iddatevis; 
    } 

    public void setIddatevis(String iddatevis) { 
     this.iddatevis = iddatevis; 
    } 

    public Date getJourvisite() { 
     return jourvisite; 
    } 

    public void setJourvisite(Date jourvisite) { 
     this.jourvisite = jourvisite; 
    } 


    public Visite getDatevisite() { 
     return datevisite; 
    } 

    public void setDatevisite(Visite datevisite) { 
     this.datevisite = datevisite; 
    } 
}

的介紹瀏覽類

package model.entitie; 

    import java.io.Serializable; 

    import java.util.List; 

    import javax.persistence.CascadeType; 
    import javax.persistence.Column; 
    import javax.persistence.Entity; 
    import javax.persistence.GeneratedValue; 
    import javax.persistence.GenerationType; 
    import javax.persistence.Id; 
    import javax.persistence.NamedQueries; 
    import javax.persistence.NamedQuery; 
    import javax.persistence.OneToMany; 
    import javax.persistence.SequenceGenerator; 

    @Entity 
    @NamedQueries({ @NamedQuery(name = "Visite.findAll", query = "select o from Visite o") }) 
    @SequenceGenerator(name = "Visite_Id_Seq_Gen", sequenceName = "VISITE_SEQ", allocationSize = 1, initialValue = 50) 
    public class Visite implements Serializable { 
     private static final long serialVersionUID = 2402539910369717472L; 
     @Column(length = 4000) 
     public String client; 
     @Column(length = 4000) 
     private String dep; 
     @Id 
     @Column(nullable = false, length = 4000) 
     @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "Visite_Id_Seq_Gen") 
     private String idvisite; 
     @Column(length = 4000) 
     private String nbvisites; 
     @OneToMany(mappedBy = "datevisite", cascade = { CascadeType.PERSIST, CascadeType.MERGE }) 
     private List<Datevisite> datevisiteList; 

     public Visite() { 
     } 

     public Visite(String client, String dep, String idvisite, String nbvisites) { 
      this.client = client; 
      this.dep = dep; 
      this.idvisite = idvisite; 
      this.nbvisites = nbvisites; 
     } 

     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 getIdvisite() { 
      return idvisite; 
     } 

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

     public String getNbvisites() { 
      return nbvisites; 
     } 

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

     public List<Datevisite> getDatevisiteList() { 
      return datevisiteList; 
     } 

     public void setDatevisiteList(List<Datevisite> datevisiteList) { 
      this.datevisiteList = datevisiteList; 
     } 

     public Datevisite addDatevisite(Datevisite datevisite) { 
      getDatevisiteList().add(datevisite); 
      datevisite.setDatevisite(this); 
      return datevisite; 
     } 

     public Datevisite removeDatevisite(Datevisite datevisite) { 
      getDatevisiteList().remove(datevisite); 
      datevisite.setDatevisite(null); 
      return datevisite; 
     } 
    }

，這是我堅持它

public Datevisite persistDatevisite(Datevisite datevisite) { 
    datevisite.setJourvisteend(datevisite.getJourvisite()); 

    em.persist(datevisite); 
    return datevisite; 
}

來源

2015-08-25 user3419507

你的意思是另一種「實體」，而不是「EJB」吧？ EJB是服務/會話bean。只是爲了澄清。除此之外，你嘗試了什麼？你的問題在哪裏？ – Thomas

是的，我的意思是它我試圖公共無效setClientVisite（字符串ClientVisite，Visite visite）{ this.ClientVisite = visite.getClient（）; }並沒有任何事情發生 – user3419507

除了你有2個參數但只使用一個參數的事實之外，它應該在實體連接時工作。當你設置一個硬編碼的字符串時它工作嗎？必須是同一個地方，否則它可能會在一個地方連接並拆分到另一個地方。 – Thomas

如果我的理解對不對，你需要得到客戶區域從Visite類（visite.getClient（）），並將其設置在DateVisite類的clientVisite字段（datevisite.setClientVisite（））中，ri ght？

您DateVisite類已經有一個成員介紹瀏覽，下面的代碼應該爲你工作：

datevisite.setClientVisite(datevisite.getDateVisite().getClient());

來源

2015-08-25 09:19:25 Pras

從另一個ejb獲取一個字段的值

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