Erreur: MappingException -->could not instantiate id generator

**OrangeBud** · 22/11/2006, 00h18

Bonjour,
J'ai l'exception suivante qui est levée :

Main error :org.hibernate.MappingException: could not instantiate id generator
org.hibernate.MappingException: could not instantiate id generator

Voici mes fichiers de code...

Configuration d'hibernate:

Code :

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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
    PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 
<hibernate-configuration>
    <session-factory >
 
		<!-- local connection properties -->
		<property name="hibernate.connection.url">jdbc:mysql://localhost/dbessai</property>
		<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="hibernate.connection.username">guillaume</property>
		<property name="hibernate.connection.password">pelops</property>
		<!-- property name="hibernate.connection.pool_size"></property -->
 
		<!-- dialect for MySQL -->
        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>
 
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
        <property name="hibernate.current_session_context_class">thread</property>
 
        <mapping resource="TCar.hbm.xml" />
		<mapping resource="TPerson.hbm.xml" />
</session-factory>
</hibernate-configuration>

Le fichier de mapping de ma classe:

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<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
 
<hibernate-mapping package="fr.exemple.value">
	<class
		name="Person"
		table="TPerson"
	>
		<meta attribute="sync-DAO">false</meta>
		<id
			name="Id"
			type="integer"
			column="person_id"
		>
			<generator class="sequence"/>
		</id>
 
		<property
			name="Name"
			column="name"
			type="string"
			not-null="true"
			length="50"
		/>
		<property
			name="Age"
			column="age"
			type="integer"
			not-null="false"
			length="11"
		/>
 
 
	</class>	
</hibernate-mapping>

Ma classe Person:

Code :

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package fr.exemple.value;
 
 
 
import fr.exemple.value.Base.BasePerson;
 
 
 
 
 
 
 
public class Person extends BasePerson {
 
	private static final long serialVersionUID = 1L;
 
 
 
/*[CONSTRUCTOR MARKER BEGIN]*/
 
	public Person () {
 
		super();
 
	}
 
 
 
	/**
 
         * Constructor for primary key
 
         */
 
	public Person (java.lang.Integer id) {
 
		super(id);
 
	}
 
 
 
	/**
 
         * Constructor for required fields
 
         */
 
	public Person (
 
		java.lang.Integer id,
 
		java.lang.String name) {
 
 
 
		super (
 
			id,
 
			name);
 
	}
 
 
 
/*[CONSTRUCTOR MARKER END]*/
 
	public String toString () {
 
	    return "Person(id=" + getId() +
 
	    ",nom=" + getName() +
 
	    ",age=" + getAge() + ")";
 
	}
 
 
 
}

La classe contenant le main:

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package fr.exemple;
 
 
import java.util.List;
import java.util.TreeSet;
 
import org.hibernate.Hibernate;
import org.hibernate.LockMode;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
 
//import fr.exemple.value.*;
import fr.exemple.value.Person;
import fr.exemple.value.Car;
 
public class EssaiHibernate {
    // configuration: parametres + mapping
    public Configuration config = null;
 
    // Usine à fabriquer des sessions
    public SessionFactory factory = null;
 
    EssaiHibernate() {
        // par défaut hibernate.cfg.xml est utilisé
        config = new Configuration();
        config.configure();
        factory = config.buildSessionFactory();
    }
 
    // les méthodes
 
    public static void main(String[] args) {
        try {
            EssaiHibernate maBase = new EssaiHibernate();
            // appels aux méthodes
 
            maBase.readPerson(1000);
        } catch (Exception e) {
            System.err.println("Main error :" + e);
            e.printStackTrace();
        }
    }
 
    //  Lecture d'une personne
    public void readPerson(int key) {
    	Session session = factory.getCurrentSession();
    	session.beginTransaction();
    	Person p = new Person();
    	session.load(p, String.valueOf(key));
    	//session.load(p,key);
    	System.out.println("Lecture de " + p);
    	session.getTransaction().commit();
    }
 
 
}

Et enfin ma sortie console (sous eclipse) :

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00:11:01,156  INFO Environment:500 - Hibernate 3.2.0
00:11:01,465  INFO Environment:533 - hibernate.properties not found
00:11:01,737  INFO Environment:667 - Bytecode provider name : cglib
00:11:01,831  INFO Environment:584 - using JDK 1.4 java.sql.Timestamp handling
00:11:03,260  INFO Configuration:1350 - configuring from resource: /hibernate.cfg.xml
00:11:03,263  INFO Configuration:1327 - Configuration resource: /hibernate.cfg.xml
00:11:07,730 DEBUG DTDEntityResolver:38 - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd]
00:11:07,921 DEBUG DTDEntityResolver:40 - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
00:11:07,989 DEBUG DTDEntityResolver:50 - located [http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd] in classpath
00:11:08,654 DEBUG Configuration:1311 - hibernate.connection.url=jdbc:mysql://localhost/dbessai
00:11:08,658 DEBUG Configuration:1311 - hibernate.connection.driver_class=com.mysql.jdbc.Driver
00:11:08,662 DEBUG Configuration:1311 - hibernate.connection.username=guillaume
00:11:08,666 DEBUG Configuration:1311 - hibernate.connection.password=pelops
00:11:08,668 DEBUG Configuration:1311 - dialect=org.hibernate.dialect.MySQLDialect
00:11:08,669 DEBUG Configuration:1311 - hibernate.show_sql=true
00:11:08,912 DEBUG Configuration:1311 - hibernate.transaction.factory_class=org.hibernate.transaction.JDBCTransactionFactory
00:11:08,913 DEBUG Configuration:1311 - hibernate.current_session_context_class=thread
00:11:09,144 DEBUG Configuration:1510 - null<-org.dom4j.tree.DefaultAttribute@7a84e4 [Attribute: name resource value "TCar.hbm.xml"]
00:11:09,145  INFO Configuration:507 - Reading mappings from resource: TCar.hbm.xml
00:11:09,157 DEBUG DTDEntityResolver:38 - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd]
00:11:09,159 DEBUG DTDEntityResolver:40 - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
00:11:09,161 DEBUG DTDEntityResolver:50 - located [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd] in classpath
00:11:12,338  INFO HbmBinder:300 - Mapping class: fr.exemple.value.Car -> TCar
00:11:12,518 DEBUG HbmBinder:1270 - Mapped property: Id -> car_id
00:11:12,590 DEBUG HbmBinder:1270 - Mapped property: Type -> type
00:11:12,614 DEBUG HbmBinder:1270 - Mapped property: Owner -> owner
00:11:12,621 DEBUG HbmBinder:1270 - Mapped property: Price -> price
00:11:12,624 DEBUG Configuration:1510 - null<-org.dom4j.tree.DefaultAttribute@26d4f1 [Attribute: name resource value "TPerson.hbm.xml"]
00:11:12,625  INFO Configuration:507 - Reading mappings from resource: TPerson.hbm.xml
00:11:12,631 DEBUG DTDEntityResolver:38 - trying to resolve system-id [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd]
00:11:12,634 DEBUG DTDEntityResolver:40 - recognized hibernate namespace; attempting to resolve on classpath under org/hibernate/
00:11:12,639 DEBUG DTDEntityResolver:50 - located [http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd] in classpath
00:11:12,979  INFO HbmBinder:300 - Mapping class: fr.exemple.value.Person -> TPerson
00:11:12,983 DEBUG HbmBinder:1270 - Mapped property: Id -> person_id
00:11:12,985 DEBUG HbmBinder:1270 - Mapped property: Name -> name
00:11:12,990 DEBUG HbmBinder:1270 - Mapped property: Age -> age
00:11:12,993  INFO Configuration:1465 - Configured SessionFactory: null
00:11:13,001 DEBUG Configuration:1466 - properties: {hibernate.connection.password=pelops, java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, sun.boot.library.path=/usr/lib/java/jre1.5.0_09/lib/i386, java.vm.version=1.5.0_09-b03, hibernate.connection.username=guillaume, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=:, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=FR, sun.os.patch.level=unknown, java.vm.specification.name=Java Virtual Machine Specification, user.dir=/home/guillaume/workspace/hibernate3, java.runtime.version=1.5.0_09-b03, java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment, hibernate.current_session_context_class=thread, java.endorsed.dirs=/usr/lib/java/jre1.5.0_09/lib/endorsed, os.arch=i386, java.io.tmpdir=/tmp, line.separator=
, java.vm.specification.vendor=Sun Microsystems Inc., os.name=Linux, sun.jnu.encoding=UTF-8, java.library.path=/usr/lib/java/jre1.5.0_09/lib/i386/client:/usr/lib/java/jre1.5.0_09/lib/i386:/usr/lib/java/jre1.5.0_09/../lib/i386:/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/lib/i386:/usr/lib/mozilla-1.7.13, java.specification.name=Java Platform API Specification, java.class.version=49.0, sun.management.compiler=HotSpot Client Compiler, hibernate.transaction.factory_class=org.hibernate.transaction.JDBCTransactionFactory, os.version=2.6.18-1.2200.fc5, user.home=/home/guillaume, user.timezone=Europe/Paris, java.awt.printerjob=sun.print.PSPrinterJob, file.encoding=UTF-8, java.specification.version=1.5, hibernate.connection.driver_class=com.mysql.jdbc.Driver, user.name=guillaume, java.class.path=/home/guillaume/workspace/hibernate3/bin:/home/guillaume/eclipse/hibernate-3.2/hibernate3.jar:/home/guillaume/workspace/hibernate3/lib/antlr-2.7.6.jar:/home/guillaume/workspace/hibernate3/lib/ant-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-antlr-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-junit-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-launcher-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-swing-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/asm-attrs.jar:/home/guillaume/workspace/hibernate3/lib/asm.jar:/home/guillaume/workspace/hibernate3/lib/c3p0-0.9.0.jar:/home/guillaume/workspace/hibernate3/lib/cglib-2.1.3.jar:/home/guillaume/workspace/hibernate3/lib/checkstyle-all.jar:/home/guillaume/workspace/hibernate3/lib/cleanimports.jar:/home/guillaume/workspace/hibernate3/lib/commons-collections-2.1.1.jar:/home/guillaume/workspace/hibernate3/lib/commons-logging-1.0.4.jar:/home/guillaume/workspace/hibernate3/lib/concurrent-1.3.2.jar:/home/guillaume/workspace/hibernate3/lib/connector.jar:/home/guillaume/workspace/hibernate3/lib/dom4j-1.6.1.jar:/home/guillaume/workspace/hibernate3/lib/ehcache-1.2.jar:/home/guillaume/workspace/hibernate3/lib/jaas.jar:/home/guillaume/workspace/hibernate3/lib/jacc-1_0-fr.jar:/home/guillaume/workspace/hibernate3/lib/javassist.jar:/home/guillaume/workspace/hibernate3/lib/jaxen-1.1-beta-7.jar:/home/guillaume/workspace/hibernate3/lib/jboss-cache.jar:/home/guillaume/workspace/hibernate3/lib/jboss-common.jar:/home/guillaume/workspace/hibernate3/lib/jboss-jmx.jar:/home/guillaume/workspace/hibernate3/lib/jboss-system.jar:/home/guillaume/workspace/hibernate3/lib/jdbc2_0-stdext.jar:/home/guillaume/workspace/hibernate3/lib/jgroups-2.2.8.jar:/home/guillaume/workspace/hibernate3/lib/jta.jar:/home/guillaume/workspace/hibernate3/lib/junit-3.8.1.jar:/home/guillaume/workspace/hibernate3/lib/log4j-1.2.11.jar:/home/guillaume/workspace/hibernate3/lib/mysql-connector-java-5.0.4-bin.jar:/home/guillaume/workspace/hibernate3/lib/oscache-2.1.jar:/home/guillaume/workspace/hibernate3/lib/proxool-0.8.3.jar:/home/guillaume/workspace/hibernate3/lib/swarmcache-1.0rc2.jar:/home/guillaume/workspace/hibernate3/lib/syndiag2.jar:/home/guillaume/workspace/hibernate3/lib/versioncheck.jar:/home/guillaume/workspace/hibernate3/lib/xerces-2.6.2.jar:/home/guillaume/workspace/hibernate3/lib/xml-apis.jar, hibernate.bytecode.use_reflection_optimizer=false, hibernate.show_sql=true, java.vm.specification.version=1.0, java.home=/usr/lib/java/jre1.5.0_09, sun.arch.data.model=32, hibernate.dialect=org.hibernate.dialect.MySQLDialect, hibernate.connection.url=jdbc:mysql://localhost/dbessai, user.language=fr, java.specification.vendor=Sun Microsystems Inc., java.vm.info=mixed mode, sharing, java.version=1.5.0_09, java.ext.dirs=/usr/lib/java/jre1.5.0_09/lib/ext, sun.boot.class.path=/usr/lib/java/jre1.5.0_09/lib/rt.jar:/usr/lib/java/jre1.5.0_09/lib/i18n.jar:/usr/lib/java/jre1.5.0_09/lib/sunrsasign.jar:/usr/lib/java/jre1.5.0_09/lib/jsse.jar:/usr/lib/java/jre1.5.0_09/lib/jce.jar:/usr/lib/java/jre1.5.0_09/lib/charsets.jar:/usr/lib/java/jre1.5.0_09/classes, java.vendor=Sun Microsystems Inc., file.separator=/, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.endian=little, dialect=org.hibernate.dialect.MySQLDialect, sun.cpu.isalist=}
00:11:13,004 DEBUG Configuration:1209 - Preparing to build session factory with filters : {}
00:11:13,006 DEBUG Configuration:1044 - processing extends queue
00:11:13,009 DEBUG Configuration:1048 - processing collection mappings
00:11:13,011 DEBUG Configuration:1059 - processing native query and ResultSetMapping mappings
00:11:13,012 DEBUG Configuration:1067 - processing association property references
00:11:13,014 DEBUG Configuration:1089 - processing foreign key constraints
00:11:13,721  INFO DriverManagerConnectionProvider:41 - Using Hibernate built-in connection pool (not for production use!)
00:11:13,729  INFO DriverManagerConnectionProvider:42 - Hibernate connection pool size: 20
00:11:13,730  INFO DriverManagerConnectionProvider:45 - autocommit mode: false
00:11:13,797  INFO DriverManagerConnectionProvider:80 - using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost/dbessai
00:11:13,801  INFO DriverManagerConnectionProvider:83 - connection properties: {user=guillaume, password=pelops}
00:11:13,809 DEBUG DriverManagerConnectionProvider:93 - total checked-out connections: 0
00:11:13,811 DEBUG DriverManagerConnectionProvider:109 - opening new JDBC connection
00:11:15,377 DEBUG DriverManagerConnectionProvider:115 - created connection to: jdbc:mysql://localhost/dbessai, Isolation Level: 4
00:11:15,385  INFO SettingsFactory:81 - RDBMS: MySQL, version: 5.0.22
00:11:15,388  INFO SettingsFactory:82 - JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.0.4 ( $Date: 2006-10-19 17:47:48 +0200 (Thu, 19 Oct 2006) $, $Revision: 5908 $ )
00:11:15,389 DEBUG DriverManagerConnectionProvider:129 - returning connection to pool, pool size: 1
00:11:15,611  INFO Dialect:141 - Using dialect: org.hibernate.dialect.MySQLDialect
00:11:15,643  INFO TransactionFactoryFactory:34 - Transaction strategy: org.hibernate.transaction.JDBCTransactionFactory
00:11:15,651  INFO TransactionManagerLookupFactory:33 - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
00:11:15,657  INFO SettingsFactory:134 - Automatic flush during beforeCompletion(): disabled
00:11:15,659  INFO SettingsFactory:138 - Automatic session close at end of transaction: disabled
00:11:15,661  INFO SettingsFactory:145 - JDBC batch size: 15
00:11:15,676  INFO SettingsFactory:148 - JDBC batch updates for versioned data: disabled
00:11:15,689  INFO SettingsFactory:153 - Scrollable result sets: enabled
00:11:15,694 DEBUG SettingsFactory:157 - Wrap result sets: disabled
00:11:15,700  INFO SettingsFactory:161 - JDBC3 getGeneratedKeys(): enabled
00:11:15,710  INFO SettingsFactory:169 - Connection release mode: auto
00:11:15,777  INFO SettingsFactory:193 - Maximum outer join fetch depth: 2
00:11:15,780  INFO SettingsFactory:196 - Default batch fetch size: 1
00:11:15,831  INFO SettingsFactory:200 - Generate SQL with comments: disabled
00:11:15,862  INFO SettingsFactory:204 - Order SQL updates by primary key: disabled
00:11:15,865  INFO SettingsFactory:369 - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
00:11:15,890  INFO ASTQueryTranslatorFactory:24 - Using ASTQueryTranslatorFactory
00:11:15,894  INFO SettingsFactory:212 - Query language substitutions: {}
00:11:15,898  INFO SettingsFactory:217 - JPA-QL strict compliance: disabled
00:11:15,904  INFO SettingsFactory:222 - Second-level cache: enabled
00:11:15,906  INFO SettingsFactory:226 - Query cache: disabled
00:11:15,907  INFO SettingsFactory:356 - Cache provider: org.hibernate.cache.NoCacheProvider
00:11:15,909  INFO SettingsFactory:241 - Optimize cache for minimal puts: disabled
00:11:15,910  INFO SettingsFactory:250 - Structured second-level cache entries: disabled
00:11:15,921 DEBUG SQLExceptionConverterFactory:52 - Using dialect defined converter
00:11:15,938  INFO SettingsFactory:270 - Echoing all SQL to stdout
00:11:15,941  INFO SettingsFactory:277 - Statistics: disabled
00:11:15,954  INFO SettingsFactory:281 - Deleted entity synthetic identifier rollback: disabled
00:11:15,957  INFO SettingsFactory:296 - Default entity-mode: pojo
00:11:16,301  INFO SessionFactoryImpl:161 - building session factory
00:11:16,397 DEBUG SessionFactoryImpl:173 - Session factory constructed with filter configurations : {}
00:11:16,405 DEBUG SessionFactoryImpl:177 - instantiating session factory with properties: {java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, hibernate.connection.password=pelops, sun.boot.library.path=/usr/lib/java/jre1.5.0_09/lib/i386, java.vm.version=1.5.0_09-b03, hibernate.connection.username=guillaume, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=:, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=FR, sun.os.patch.level=unknown, java.vm.specification.name=Java Virtual Machine Specification, user.dir=/home/guillaume/workspace/hibernate3, java.runtime.version=1.5.0_09-b03, java.awt.graphicsenv=sun.awt.X11GraphicsEnvironment, hibernate.current_session_context_class=thread, java.endorsed.dirs=/usr/lib/java/jre1.5.0_09/lib/endorsed, os.arch=i386, java.io.tmpdir=/tmp, line.separator=
, java.vm.specification.vendor=Sun Microsystems Inc., os.name=Linux, sun.jnu.encoding=UTF-8, java.library.path=/usr/lib/java/jre1.5.0_09/lib/i386/client:/usr/lib/java/jre1.5.0_09/lib/i386:/usr/lib/java/jre1.5.0_09/../lib/i386:/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/lib/i386:/usr/lib/mozilla-1.7.13, java.specification.name=Java Platform API Specification, java.class.version=49.0, sun.management.compiler=HotSpot Client Compiler, hibernate.transaction.factory_class=org.hibernate.transaction.JDBCTransactionFactory, os.version=2.6.18-1.2200.fc5, user.home=/home/guillaume, user.timezone=Europe/Paris, java.awt.printerjob=sun.print.PSPrinterJob, file.encoding=UTF-8, java.specification.version=1.5, hibernate.connection.driver_class=com.mysql.jdbc.Driver, java.class.path=/home/guillaume/workspace/hibernate3/bin:/home/guillaume/eclipse/hibernate-3.2/hibernate3.jar:/home/guillaume/workspace/hibernate3/lib/antlr-2.7.6.jar:/home/guillaume/workspace/hibernate3/lib/ant-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-antlr-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-junit-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-launcher-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/ant-swing-1.6.5.jar:/home/guillaume/workspace/hibernate3/lib/asm-attrs.jar:/home/guillaume/workspace/hibernate3/lib/asm.jar:/home/guillaume/workspace/hibernate3/lib/c3p0-0.9.0.jar:/home/guillaume/workspace/hibernate3/lib/cglib-2.1.3.jar:/home/guillaume/workspace/hibernate3/lib/checkstyle-all.jar:/home/guillaume/workspace/hibernate3/lib/cleanimports.jar:/home/guillaume/workspace/hibernate3/lib/commons-collections-2.1.1.jar:/home/guillaume/workspace/hibernate3/lib/commons-logging-1.0.4.jar:/home/guillaume/workspace/hibernate3/lib/concurrent-1.3.2.jar:/home/guillaume/workspace/hibernate3/lib/connector.jar:/home/guillaume/workspace/hibernate3/lib/dom4j-1.6.1.jar:/home/guillaume/workspace/hibernate3/lib/ehcache-1.2.jar:/home/guillaume/workspace/hibernate3/lib/jaas.jar:/home/guillaume/workspace/hibernate3/lib/jacc-1_0-fr.jar:/home/guillaume/workspace/hibernate3/lib/javassist.jar:/home/guillaume/workspace/hibernate3/lib/jaxen-1.1-beta-7.jar:/home/guillaume/workspace/hibernate3/lib/jboss-cache.jar:/home/guillaume/workspace/hibernate3/lib/jboss-common.jar:/home/guillaume/workspace/hibernate3/lib/jboss-jmx.jar:/home/guillaume/workspace/hibernate3/lib/jboss-system.jar:/home/guillaume/workspace/hibernate3/lib/jdbc2_0-stdext.jar:/home/guillaume/workspace/hibernate3/lib/jgroups-2.2.8.jar:/home/guillaume/workspace/hibernate3/lib/jta.jar:/home/guillaume/workspace/hibernate3/lib/junit-3.8.1.jar:/home/guillaume/workspace/hibernate3/lib/log4j-1.2.11.jar:/home/guillaume/workspace/hibernate3/lib/mysql-connector-java-5.0.4-bin.jar:/home/guillaume/workspace/hibernate3/lib/oscache-2.1.jar:/home/guillaume/workspace/hibernate3/lib/proxool-0.8.3.jar:/home/guillaume/workspace/hibernate3/lib/swarmcache-1.0rc2.jar:/home/guillaume/workspace/hibernate3/lib/syndiag2.jar:/home/guillaume/workspace/hibernate3/lib/versioncheck.jar:/home/guillaume/workspace/hibernate3/lib/xerces-2.6.2.jar:/home/guillaume/workspace/hibernate3/lib/xml-apis.jar, user.name=guillaume, hibernate.bytecode.use_reflection_optimizer=false, hibernate.show_sql=true, java.vm.specification.version=1.0, sun.arch.data.model=32, java.home=/usr/lib/java/jre1.5.0_09, hibernate.connection.url=jdbc:mysql://localhost/dbessai, hibernate.dialect=org.hibernate.dialect.MySQLDialect, java.specification.vendor=Sun Microsystems Inc., user.language=fr, java.vm.info=mixed mode, sharing, java.version=1.5.0_09, java.ext.dirs=/usr/lib/java/jre1.5.0_09/lib/ext, sun.boot.class.path=/usr/lib/java/jre1.5.0_09/lib/rt.jar:/usr/lib/java/jre1.5.0_09/lib/i18n.jar:/usr/lib/java/jre1.5.0_09/lib/sunrsasign.jar:/usr/lib/java/jre1.5.0_09/lib/jsse.jar:/usr/lib/java/jre1.5.0_09/lib/jce.jar:/usr/lib/java/jre1.5.0_09/lib/charsets.jar:/usr/lib/java/jre1.5.0_09/classes, java.vendor=Sun Microsystems Inc., file.separator=/, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.cpu.endian=little, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.isalist=, dialect=org.hibernate.dialect.MySQLDialect}
Main error :org.hibernate.MappingException: could not instantiate id generator
org.hibernate.MappingException: could not instantiate id generator
	at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:98)
	at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:152)
	at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:192)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1218)
	at fr.exemple.EssaiHibernate.<init>(EssaiHibernate.java:29)
	at fr.exemple.EssaiHibernate.main(EssaiHibernate.java:36)
Caused by: org.hibernate.MappingException: Dialect does not support sequences
	at org.hibernate.dialect.Dialect.getSequenceNextValString(Dialect.java:570)
	at org.hibernate.id.SequenceGenerator.configure(SequenceGenerator.java:65)
	at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:94)
	... 5 more

Si quelqu'un a une idée...
Merci

**woodwai** · 22/11/2006, 12h21

Si je me rappel bien, les sequences n'existent pas sous MYSQL (mais elles existent sous ORACLE).

Vérifie dans la base de documentation d'hibernate ce qu'il faut utiliser pour mysql

Erreur: MappingException -->could not instantiate id generator

Hibernate Java

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