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3天以来，我一直在这个问题上，我试图尽可能清楚地解释：我正在从事软件库存管理，我使用EclipseLink（JPA2.0）来管理数据库。问题是，当我使用相关文章创建新发票并尝试保留它们时，我会得到一个 Referential integrity constraint violation Exception...

真正的问题是我用netbeans生成了所有实体（因为我不熟悉注释）并且我无法确认它们是否正确生成（但我仍然怀疑）......

表 SQL：

在此处输入图像描述

CREATE TABLE fact_proforma (
  idfact_proforma INT UNSIGNED NOT NULL AUTO_INCREMENT,
  utilisateur_login VARCHAR(25) NOT NULL,
  client_idclient INT UNSIGNED NOT NULL,
  date DATE NOT NULL,
  PRIMARY KEY(idfact_proforma),
  FOREIGN KEY(client_idclient)
    REFERENCES client(idclient)
      ON DELETE NO ACTION
      ON UPDATE CASCADE,
  FOREIGN KEY(utilisateur_login)
    REFERENCES utilisateur(login)
      ON DELETE NO ACTION
      ON UPDATE CASCADE
);



CREATE TABLE fact_proforma_has_article (
  fact_proforma_idfact_proforma INT UNSIGNED NOT NULL,
  article_idarticle VARCHAR(40) NOT NULL,
  prix_ht DOUBLE NOT NULL,
  qte DOUBLE  NOT NULL,
  remise DOUBLE NOT NULL,
  marge_benef DOUBLE NOT NULL,
  PRIMARY KEY(fact_proforma_idfact_proforma, article_idarticle),
  FOREIGN KEY(fact_proforma_idfact_proforma)
    REFERENCES fact_proforma(idfact_proforma)
      ON DELETE CASCADE
      ON UPDATE CASCADE,
  FOREIGN KEY(article_idarticle)
    REFERENCES article(idarticle)
      ON DELETE NO ACTION
      ON UPDATE CASCADE
);


CREATE TABLE article (
  idarticle VARCHAR(40) NOT NULL,
  libel VARCHAR(100) NOT NULL,
  prix_ht DOUBLE NOT NULL,
  tva_idtva DOUBLE NOT NULL,
  qte DOUBLE NOT NULL,
  min_qte DOUBLE  NOT NULL,
  marge_benef DOUBLE NOT NULL,
  remise DOUBLE NOT NULL,
  unite_idunite VARCHAR(10) NOT NULL,
  famille_idfamille VARCHAR(50) NOT NULL,
  etat CHAR(1) NOT NULL,
  PRIMARY KEY(idarticle),
  FOREIGN KEY(tva_idtva)
    REFERENCES tva(idtva)
      ON DELETE NO ACTION
      ON UPDATE CASCADE,
  FOREIGN KEY(famille_idfamille)
    REFERENCES famille(idfamille)
      ON DELETE NO ACTION
      ON UPDATE CASCADE,
  FOREIGN KEY(unite_idunite)
    REFERENCES unite(idunite)
      ON DELETE NO ACTION
      ON UPDATE CASCADE
);



CREATE TABLE utilisateur (
  login VARCHAR(25) NOT NULL,
  pass VARCHAR(15) NOT NULL,
  class CHAR(1) NOT NULL,
  etat CHAR(1) NOT NULL,
  PRIMARY KEY(login)
);

FactProforma.java: // “Facture Proforma”是“形式发票”

public class FactProforma implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "IDFACT_PROFORMA", nullable = false)
    private Integer idfactProforma;
    @Basic(optional = false)
    @Column(name = "DATE", nullable = false)
    @Temporal(TemporalType.DATE)
    private Date date;
    @OneToMany(cascade=CascadeType.ALL , mappedBy = "factProforma")
    private List<FactProformaHasArticle> factProformaHasArticleList;
    @JoinColumn(name = "UTILISATEUR_LOGIN", referencedColumnName = "LOGIN", nullable = false)
    @ManyToOne(optional = false)
    private Utilisateur utilisateurLogin;
    @JoinColumn(name = "CLIENT_IDCLIENT", referencedColumnName = "IDCLIENT", nullable = false)
    @ManyToOne(optional = false)
    private Client clientIdclient;

FactProformaHasArticle.java

public class FactProformaHasArticle implements Serializable {
    private static final long serialVersionUID = 1L;
    @EmbeddedId
    protected FactProformaHasArticlePK factProformaHasArticlePK;
    @Basic(optional = false)
    @Column(name = "PRIX_HT", nullable = false)
    private double prixHt;
    @Basic(optional = false)
    @Column(name = "QTE", nullable = false)
    private double qte;
    @Basic(optional = false)
    @Column(name = "REMISE", nullable = false)
    private double remise;
    @Basic(optional = false)
    @Column(name = "MARGE_BENEF", nullable = false)
    private double margeBenef;
    @JoinColumn(name = "FACT_PROFORMA_IDFACT_PROFORMA", referencedColumnName = "IDFACT_PROFORMA", nullable = false, insertable = false, updatable = false)
    @ManyToOne(optional = false)
    private FactProforma factProforma;
    @JoinColumn(name = "ARTICLE_IDARTICLE", referencedColumnName = "IDARTICLE", nullable = false, insertable = false, updatable = false)
    @ManyToOne(optional = false)
    private Article article;

FactProformaHasArticlePK.java

@Embeddable
public class FactProformaHasArticlePK implements Serializable {
    @Basic(optional = false)
    @Column(name = "FACT_PROFORMA_IDFACT_PROFORMA", nullable = false)
    private int factProformaIdfactProforma;
    @Basic(optional = false)
    @Column(name = "ARTICLE_IDARTICLE", nullable = false, length = 40)
    private String articleIdarticle;

我的代码：

FactProforma factpro=new FactProforma(null, new Date());
 Utilisateur user=new Utilisateur(loginActuel);
 Client client=new Client(Integer.parseInt(codeClient.getText()));

java.util.List<FactProformaHasArticle> ListOfArticles =this.c.GetPanier(dtm,factpro);

factpro.setClientIdclient(client);
factpro.setFactProformaHasArticleList(ListOfArticles);
factpro.setUtilisateurLogin(user);

 EntityManager em= emf.createEntityManager();
    em.getTransaction().begin();

    em.persist(factpro);

    em.getTransaction().commit();

堆栈跟踪：

Exception in thread "AWT-EventQueue-0" javax.persistence.RollbackException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.h2.jdbc.JdbcSQLException: Referential integrity constraint violation: "CONSTRAINT_9A: PUBLIC.FACT_PROFORMA_HAS_ARTICLE FOREIGN KEY(FACT_PROFORMA_IDFACT_PROFORMA) REFERENCES PUBLIC.FACT_PROFORMA(IDFACT_PROFORMA)"; SQL statement:
Internal Exception: org.h2.jdbc.JdbcSQLException: Referential integrity constraint violation: "CONSTRAINT_9A: PUBLIC.FACT_PROFORMA_HAS_ARTICLE FOREIGN KEY(FACT_PROFORMA_IDFACT_PROFORMA) REFERENCES PUBLIC.FACT_PROFORMA(IDFACT_PROFORMA)"; SQL statement:
INSERT INTO TEST.PUBLIC.FACT_PROFORMA_HAS_ARTICLE (MARGE_BENEF, PRIX_HT, QTE, REMISE, ARTICLE_IDARTICLE, FACT_PROFORMA_IDFACT_PROFORMA) VALUES (?, ?, ?, ?, ?, ?) [23506-164]
INSERT INTO TEST.PUBLIC.FACT_PROFORMA_HAS_ARTICLE (MARGE_BENEF, PRIX_HT, QTE, REMISE, ARTICLE_IDARTICLE, FACT_PROFORMA_IDFACT_PROFORMA) VALUES (?, ?, ?, ?, ?, ?) [23506-164]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:329)
    at org.h2.message.DbException.get(DbException.java:169)
    at org.h2.message.DbException.get(DbException.java:169)
    at org.h2.message.DbException.get(DbException.java:146)
    at org.h2.message.DbException.get(DbException.java:146)
    at org.h2.constraint.ConstraintReferential.checkRowOwnTable(ConstraintReferential.java:345)
    at org.h2.constraint.ConstraintReferential.checkRowOwnTable(ConstraintReferential.java:345)
    at org.h2.constraint.ConstraintReferential.checkRow(ConstraintReferential.java:287)
    at org.h2.constraint.ConstraintReferential.checkRow(ConstraintReferential.java:287)
    at org.h2.table.Table.fireConstraints(Table.java:862)
    at org.h2.table.Table.fireConstraints(Table.java:862)
    at org.h2.table.Table.fireAfterRow(Table.java:879)
    at org.h2.table.Table.fireAfterRow(Table.java:879)
    at org.h2.command.dml.Insert.insertRows(Insert.java:126)
    at org.h2.command.dml.Insert.update(Insert.java:84)
    at org.h2.command.dml.Insert.insertRows(Insert.java:126)
    at org.h2.command.CommandContainer.update(CommandContainer.java:73)
    at org.h2.command.dml.Insert.update(Insert.java:84)
    at org.h2.command.Command.executeUpdate(Command.java:226)
    at org.h2.command.CommandContainer.update(CommandContainer.java:73)
    at org.h2.server.TcpServerThread.process(TcpServerThread.java:325)
    at org.h2.command.Command.executeUpdate(Command.java:226)
    at org.h2.server.TcpServerThread.run(TcpServerThread.java:146)
    at java.lang.Thread.run(Thread.java:722 at org.h2.server.TcpServerThread.process(TcpServerThread.java:325)
)

Error Code: 23506
Call: INSERT INTO TEST.PUBLIC.FACT_PROFORMA_HAS_ARTICLE (MARGE_BENEF, PRIX_HT, QTE, REMISE, ARTICLE_IDARTICLE, FACT_PROFORMA_IDFACT_PROFORMA) VALUES (?, ?, ?, ?, ?, ?)
    at org.h2.server.TcpServerThread.run(TcpServerThread.java:146)
    bind => [6 parameters bound]
    at java.lang.Thread.run(Thread.java:722)

明天我将尝试使用另一个 DBMS，以避免冲突......

PS：对不起法语..我别无选择。

更新：它的工作：

EntityManager em= emf.createEntityManager();
    em.getTransaction().begin();

    em.persist(fact);
    em.flush();

    for(FactProformaHasArticle couple: estComposeFacture)
    {
        couple.getFactProformaHasArticlePK().setFactProformaIdfactProforma(fact.getIdfactProforma());
        em.persist(couple);
    }

    em.getTransaction().commit();
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2 回答 2

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编辑后的帖子：您需要确保 FactProformaHasArticle 和 FactProforma 之间的关系被完全引用。我怀疑你需要有这样的东西才能坚持：

List<FactProformaHasArticle> ListOfArticles =this.c.GetPanier(dtm,factpro)
for(FactProformaHasArticle fpha: ListOfArticles) {
  fpha.setFactProforma(factpro);
}

（注意：成员变量的第一个字母小写会更好，即 listOfArticles代替 ListOfArticlesetc）

INITIAL POST（如果它也适用于您的情况）：您是否尝试从主键的注释中删除optional=falseand ？nullable=false我曾经对此有过疑问：因此，JPA 不允许这样做MyEntity me=new MyEntity(null);。尝试类似：

public class FactProforma implements Serializable {

  @Id
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  // removed:@Basic(optional = false)
  @Column(name = "IDFACT_PROFORMA") // removed: , nullable = false)
  private Integer idfactProforma;
  // rest should be ok
}
于 2012-06-29T01:23:38.797 回答
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你已经有了一个解决方案，但我想我会提到它起作用的原因是因为你有通过 EmbeddedId 的基本映射控制的主键字段 - 所以即使你可能在持久化之前设置了关系，pk 字段将为 null直到 EmbeddedId 的 articleIdarticle 手动设置了一个值。这是两次映射“ARTICLE_IDARTICLE”的问题——这两个映射都应该由应用程序维护，并且在你坚持 FactProformaHasArticle 之前 pk 值需要可用。

JPA 2.0 使此设置更容易一些，因为您可以在关系上使用 @MapsId 注释来显示它控制 EmbeddedId 的基本映射 - 因此您只需要设置关系并让 JPA 为您设置字段。或者您可以删除 embeddedId，将该对象用作 PKclass 并直接使用@Id 标记关系，如下所述：

http://en.wikibooks.org/wiki/Java_Persistence/Identity_and_Sequencing#JPA_2.0 使用这将允许您删除刷新调用，因为 JPA 将为您设置 pk 值。

于 2012-07-03T15:14:48.677 回答