BUG #8248: se presenta una excepcion cuando intento realizar consultas des la aplicacion en netbeasns

The following bug has been logged on the website:

Bug reference:      8248
Logged by:          Jefferson Velasco
Email address:      javelasco30@misena.edu.co
PostgreSQL version: 8.4.0
Operating system:   windows
Description:

Exception [EclipseLink-4002] (Eclipse Persistence Services -
2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: no están
implementadas las referencias entre bases de datos:
«farmacia.public.usuario» Error Code: 0 Call: SELECT idusuario, clave,
nombreusuario, rol, idpersona FROM Farmacia.public.usuario WHERE
((nombreusuario = ?) AND (clave = ?)) bind => [2 parameters bound] Query:
ReadAllQuery(referenceClass=Usuario sql="SELECT idusuario, clave,
nombreusuario, rol, idpersona FROM Farmacia.public.usuario WHERE
((nombreusuario = ?) AND (clave = ?))")


javax.faces.el.EvaluationException: Exception [EclipseLink-4002] (Eclipse
Persistence Services - 2.2.0.v20110202-r8913):
org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: no están
implementadas las referencias entre bases de datos:
«farmacia.public.usuario»
Error Code: 0
Call: SELECT idusuario, clave, nombreusuario, rol, idpersona FROM
Farmacia.public.usuario WHERE ((nombreusuario = ?) AND (clave = ?))
    bind => [2 parameters bound]
Query: ReadAllQuery(referenceClass=Usuario sql="SELECT idusuario, clave,
nombreusuario, rol, idpersona FROM Farmacia.public.usuario WHERE
((nombreusuario = ?) AND (clave = ?))")
    at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
    at
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:619)
Caused by: Exception [EclipseLink-4002] (Eclipse Persistence Services -
2.2.0.v20110202-r8913):
org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: org.postgresql.util.PSQLException: ERROR: no están
implementadas las referencias entre bases de datos:
«farmacia.public.usuario»
Error Code: 0
Call: SELECT idusuario, clave, nombreusuario, rol, idpersona FROM
Farmacia.public.usuario WHERE ((nombreusuario = ?) AND (clave = ?))
    bind => [2 parameters bound]
Query: ReadAllQuery(referenceClass=Usuario sql="SELECT idusuario, clave,
nombreusuario, rol, idpersona FROM Farmacia.public.usuario WHERE
((nombreusuario = ?) AND (clave = ?))")
    at
org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:333)
    at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:684)
    at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:526)
    at
org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1729)
    at
org.eclipse.persistence.sessions.server.ServerSession.executeCall(ServerSession.java:566)
    at

org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:207)
    at

org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:193)
    at

org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:264)
    at

org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:647)
    at

org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:2558)
    at
org.eclipse.persistence.internal.queries.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:2517)
    at
org.eclipse.persistence.queries.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:410)
    at
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1080)
    at
org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:808)
    at
org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1040)
    at
org.eclipse.persistence.queries.ReadAllQuery.execute(ReadAllQuery.java:383)
    at
org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1126)
    at
org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2842)
    at
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1521)
    at
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1503)
    at
org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1477)
    at
org.eclipse.persistence.internal.jpa.EJBQueryImpl.executeReadQuery(EJBQueryImpl.java:484)
    at
org.eclipse.persistence.internal.jpa.EJBQueryImpl.getSingleResult(EJBQueryImpl.java:772)
    at Control.UsuarioJpaController.autenticar(UsuarioJpaController.java:177)
    at logica.Beanusuario.validarUsuario(Beanusuario.java:28)
    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.apache.el.parser.AstValue.invoke(AstValue.java:278)
    at
org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:274)
    at
com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at
javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
    ... 24 more
Caused by: org.postgresql.util.PSQLException: ERROR: no están implementadas
las referencias entre bases de datos: «farmacia.public.usuario»
    at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1592)
    at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1327)
    at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:192)
    at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:451)
    at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:350)
    at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:254)
    at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:889)
    at
org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:598)
    ... 55 more
1ue solucion puede tener