[eclipselink-users] NullPointer trying JPA2 (MetamodelImpl.java:370)

[Diego Coronel <diego.coronel@xxxxxxxxx>]

Hi, 

 Im trying JPA2 using glassfish V3 final, Weld, and im getting this error: 

Caused by: java.lang.NullPointerException 
        at
org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.initialize(MetamodelImpl.java:370) 
        at
org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:101) 
        at
org.eclipse.persistence.internal.jpa.metamodel.MetamodelImpl.<init>(MetamodelImpl.java:120) 
        at
org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.getMetamodel(EntityManagerSetupImpl.java:1939) 
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getMetamodel(EntityManagerFactoryImpl.java:472) 
        at
org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getCriteriaBuilder(EntityManagerFactoryImpl.java:456) 
        at
com.sun.enterprise.container.common.impl.EntityManagerFactoryWrapper.getCriteriaBuilder(EntityManagerFactoryWrapper.java:109) 
        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.jboss.weld.bean.proxy.ClientProxyMethodHandler.invoke(ClientProxyMethodHandler.java:113) 
        at
javax.persistence.EntityManagerFactory_$$_javassist_32.getCriteriaBuilder(EntityManagerFactory_$$_javassist_32.java) 
        at
com.fpf.model.security.dao.UsuarioDAO.getUsuario(UsuarioDAO.java:28) 
        at
com.fpf.web.security.login.Authenticator.isLogged(Authenticator.java:48) 
        at
com.fpf.web.security.login.Authenticator.authenticate(Authenticator.java:37) 
        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.jboss.weld.bean.proxy.ClientProxyMethodHandler.invoke(ClientProxyMethodHandler.java:113) 
        at
com.fpf.web.security.login.Authenticator_$$_javassist_31.authenticate(Authenticator_$$_javassist_31.java) 
        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 com.sun.el.parser.AstValue.invoke(AstValue.java:234) 
        at
com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:297) 
        at
org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:43) 
        at
org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:72) 
        at
com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98) 
        at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) 

I have created by myself the entity and the metaModel 

@StaticMetamodel( Usuario.class ) 
public abstract class Usuario_ { 

        public static volatile SingularAttribute<Usuario, Integer> id; 
        public static volatile SingularAttribute<Usuario, String> nome; 
        public static volatile SingularAttribute<Usuario, String> password; 
        public static volatile SingularAttribute<Usuario, String> login; 
        public static volatile SingularAttribute<Usuario, Status> status; 
        
} 

but its not working, so, what could be wrong ?? is there any docs for
configure eclipse to auto generate these metamodels ?? ty 

sry about english. 

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