Erro Configured SessionFactory: null

i am new student programming java for web , and in this moment i'm with a problem my font code this in GitHub application return of Glassfish when i try insert in database: javax.faces.el.EvaluationException: org.hibernate.exception.GenericJDBCException: could not execute statement

Caused by: org.hibernate.exception.GenericJDBCException: could not execute statement

Caused by: java.sql.SQLException: No database selected