Duplication de l'entrée '...' pour la clé 'PRIMARY'.

Question

Comme vous et moi le savons, ce type de messages d'erreur suscite de nombreuses questions.

Mais je n'ai pas pu trouver de bonnes réponses car il y a tellement de réponses.

J'ai une table qui stocke nonce envoyés par les clients.

Mais parfois (occasionnellement) db se plaint de l'insertion d'une clé primaire en double même s'il n'y a pas d'enregistrement avec exactement la même clé primaire.

Voici ce que JVM montre.

[#|2012-11-09T11:06:52.098+0900|WARNING|glassfish3.1.2|javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=236;_ThreadName=Thread-2;|EJB5184:A system exception occurred during an invocation on EJB Nonce2Bean, method: public java.lang.Object kr.co.ticomms.gameground.business.AbstractEntityFacade.persist(java.lang.Object)|#]

[#|2012-11-09T11:06:52.099+0900|WARNING|glassfish3.1.2|javax.enterprise.system.container.ejb.com.sun.ejb.containers|_ThreadID=236;_ThreadName=Thread-2;|javax.ejb.EJBException
        ...
Caused by: javax.persistence.PersistenceException: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO NONCE2 (NONCE, UDID, CREATED_DATE) VALUES (?, ?, ?)
        bind => [3 parameters bound]
Query: InsertObjectQuery(c8b4bdb84606fed0/c8b4bdb84606fed0_1352426820765_1880007534138556402)
        ...
        ... 29 more
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
Error Code: 1062
Call: INSERT INTO NONCE2 (NONCE, UDID, CREATED_DATE) VALUES (?, ?, ?)
        bind => [3 parameters bound]
Query: InsertObjectQuery(c8b4bdb84606fed0/c8b4bdb84606fed0_1352426820765_1880007534138556402)
       ...
       ... 59 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'c8b4bdb84606fed0-c8b4bdb84606fed0_1352426820765_1880007534138556' for key 'PRIMARY'
|#]

Voici ce que mysql montre.

mysql> SHOW VARIABLES LIKE "%version%";
+-------------------------+-------------------------+
| Variable_name           | Value                   |
+-------------------------+-------------------------+
| protocol_version        | 10                      |
| version                 | 5.1.62-0ubuntu0.10.04.1 |
| version_comment         | (Ubuntu)                |
| version_compile_machine | x86_64                  |
| version_compile_os      | debian-linux-gnu        |
+-------------------------+-------------------------+
5 rows in set (0.00 sec)

mysql> DESC NONCE2;
+--------------+--------------+------+-----+-------------------+-------+
| Field        | Type         | Null | Key | Default           | Extra |
+--------------+--------------+------+-----+-------------------+-------+
| CREATED_DATE | timestamp    | NO   |     | CURRENT_TIMESTAMP |       |
| UDID         | varchar(255) | NO   | PRI | NULL              |       |
| NONCE        | varchar(255) | NO   | PRI | NULL              |       |
+--------------+--------------+------+-----+-------------------+-------+
3 rows in set (0.00 sec)

mysql> SHOW CREATE TABLE NONCE2;
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table  | Create Table                                                                                                                                                                                                                |
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| NONCE2 | CREATE TABLE `NONCE2` (
  `CREATED_DATE` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `UDID` varchar(255) NOT NULL,
  `NONCE` varchar(255) NOT NULL,
  PRIMARY KEY (`UDID`,`NONCE`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 |
+--------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
| Table  | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment |
+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
| NONCE2 |          0 | PRIMARY  |            1 | UDID        | A         |           7 |     NULL | NULL   |      | BTREE      |         |
| NONCE2 |          0 | PRIMARY  |            2 | NONCE       | A         |         403 |     NULL | NULL   |      | BTREE      |         |
+--------+------------+----------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+
2 rows in set (0.00 sec)

mysql>

J'ai essayé de supprimer et de recréer la table, mais le même type de problème se produit.

Je suis avec JPA sur GlassFish.

Une aide ?

----------------------------------------- UPDATE

Je travaille avec JPA.

Classe d'identification.

public class NonceId implements Serializable {

    public static NonceId newInstance(final String udid, final String nonce) {
        if (udid == null) {
            throw new IllegalArgumentException("null udid");
        }
        if (nonce == null) {
            throw new IllegalArgumentException("null nonce");
        }
        final NonceId instance = new NonceId();
        instance.udid = udid;
        instance.nonce = nonce;
        return instance;
    }

    @Override
    public int hashCode() {
        int hash = 7;
        hash = 23 * hash + (this.udid != null ? this.udid.hashCode() : 0);
        hash = 23 * hash + (this.nonce != null ? this.nonce.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final NonceId other = (NonceId) obj;
        if ((this.udid == null) ? (other.udid != null) : !this.udid.equals(other.udid)) {
            return false;
        }
        if ((this.nonce == null) ? (other.nonce != null) : !this.nonce.equals(other.nonce)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return udid + "/" + nonce;
    }

    private String udid;

    private String nonce;
}

Classe d'entité.

@Entity
@IdClass(NonceId.class)
@Table(name = "NONCE2")
@XmlTransient
public class Nonce2 implements Serializable {

    public static final int UDID_SIZE_MIN = 1;
    public static final int UDID_SIZE_MAX = 255;
    public static final int NONCE_SIZE_MIN = 1;
    public static final int NONCE_SIZE_MAX = 255;

    public static Nonce2 newInstance(final String udid, final String nonce) {
        if (nonce == null) {
            throw new NullPointerException("null value");
        }
        final Nonce2 instance = new Nonce2();
        instance.udid = udid;
        instance.nonce = nonce;
        return instance;
    }

    public Date getCreatedDate() {
        return createdDate;
    }

    public String getUdid() {
        return udid;
    }

    public String getNonce() {
        return nonce;
    }

    @PrePersist
    protected void _PrePersist() {
        createdDate = new Date();
    }

    @Override
    public String toString() {
        return udid + "/" + nonce;
    }

    @Column(name = "CREATED_DATE", nullable = false, updatable = false)
    @Temporal(TemporalType.TIMESTAMP)
    @NotNull
    private Date createdDate;

    @Id
    @Column(name = "UDID", nullable = false, updatable = false)
    @NotNull
    @Size(min = UDID_SIZE_MIN, max = UDID_SIZE_MAX)
    private String udid;

    @Id
    @Column(name = "NONCE", nullable = false, updatable = false)
    @NotNull
    @Size(min = NONCE_SIZE_MIN, max = NONCE_SIZE_MAX)
    private String nonce;
}

Et dans mon filtre, je fais

@WebFilter(urlPatterns = {"/*"})
public class Filter_ implements Filter {

    @Override
    public void doFilter(final ServletRequest request,
                         final ServletResponse response,
                         final FilterChain chain)
        throws IOException, ServletException {

        // check whether nonce is already exist via em.find();

        chain.doFilter(request, response);

        // store nonce via em.persist(); // EXCEPTION IS HERE
        // THERE IS NO SUCH RECORD check direct SQL console.
    }
}

Mon fournisseur JPA semble exécuter cette déclaration.

INSERT INTO NONCE2 (NONCE, UDID, CREATED_DATE) VALUES (?, ?, ?)

Answer 1

Vous avez une clé primaire composite définie sur la table.

Il se peut que vous essayiez d'insérer des enregistrements dans un lot au cours de la même session. Et le lot peut contenir des entrées en double pour lesdites colonnes clés. Veuillez vérifier cela.

Veuillez également poster votre code d'insertion avec des exemples de données.