示例#1
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 /// <summary>
 /// This method is called when the model for a derived context has been initialized, but
 /// before the model has been locked down and used to initialize the context.  The default
 /// implementation of this method does nothing, but it can be overridden in a derived class
 /// such that the model can be further configured before it is locked down.
 /// </summary>
 /// <param name="modelBuilder">The builder that defines the model for the context being created.</param>
 /// <remarks>
 /// Typically, this method is called only once when the first instance of a derived context
 /// is created.  The model for that context is then cached and is for all further instances of
 /// the context in the app domain.  This caching can be disabled by setting the ModelCaching
 /// property on the given ModelBuidler, but note that this can seriously degrade performance.
 /// More control over caching is provided through use of the DbModelBuilder and DbContextFactory
 /// classes directly.
 /// </remarks>
 protected override void OnModelCreating(DbModelBuilder modelBuilder)
 {
     UserDao.CreateTable(modelBuilder);
     RoleDao.CreateTable(modelBuilder);
     RightDao.CreateTable(modelBuilder);
     ResourceDao.CreateTable(modelBuilder);
     base.OnModelCreating(modelBuilder);
 }