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Author Message
Martin_Ch
 Post subject: Problem mit dem Hibernate Dialect
PostPosted: Thu Jan 08, 2009 1:42 pm 
Newbie

Joined: Thu Jan 08, 2009 1:35 pm
Posts: 1
Hallo,

ich habe ein Problem in einem größeren Projekt mit Hibernate, wobei ich dabei das JPA-Feature von Hibernate nutze. Das ganze wird über Annotationen und einer persistence.xml im META-INF Ordner realisiert.

Noch bevor überhaupt eine Datenbankverbindung aufgebaut werden kann, kommt der unten stehende Fehler. Meine persistence.xml sieht wiefolgt aus:

Code:
<?xml version='1.0' encoding='utf-8'?>
<persistence>
   <persistence-unit name="xxx">
   <provider>org.hibernate.ejb.HibernatePersistence</provider>
      <class>...</class>
      <properties>
         <property name="hibernate.connection.driver_class" value="net.sourceforge.jtds.jdbc.Driver"/>
          <property name="hibernate.connection.url" value="jdbc:jtds:sqlserver://localhost:1433;DatabaseName=xxx;selectMethod=cursor;sendStringParametersAsUnicode=false"/>
         <property name="hibernate.connection.username" value="xxx"/>
         <property name="hibernate.connection.password" value="xxx"/>
         <property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect"/>
           <property name="hibernate.show_sql" value="true"/>
           <property name="hibernate.max_fetch_depth" value="5"/>
      </properties>
   </persistence-unit>


Kann mir jemand bei dem Problem helfen, ich steig da nicht ganz durch... Danke!

Fehler:

javax.persistence.PersistenceException: org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:695)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:121)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
at de.bamannheim.grademaster.database.DatabaseConnection.<init>(DatabaseConnection.java:34)
at de.PACKAGE.database.DatabaseConnectionTest.testDatabaseConnection(DatabaseConnectionTest.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: org.hibernate.HibernateException: Hibernate Dialect must be explicitly set
at org.hibernate.dialect.DialectFactory.determineDialect(DialectFactory.java:57)
at org.hibernate.dialect.DialectFactory.buildDialect(DialectFactory.java:39)
at org.hibernate.cfg.SettingsFactory.determineDialect(SettingsFactory.java:409)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:119)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1933)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1216)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:688)
... 29 more
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