Expose a repository as an IQueryable

Question

I\'d like to expose a Repository as an \'IQueryable\' type.

The repository uses Linq to NHibernate to communicate with the database.

Can anyone point me at an ex

Answer 1

I can see two possible solutions here:

1. Expose IEnumerable and use .AsQueryable() when needed

   // Repository
   public IEnumerable GetAll() {
       return _dbContext.People.AsQueryable();
   }
   
   // Usage
   public Person GetByPhone(string phoneNumber) {
       var queryablePeople = _personRepository.GetAll().AsQueryable();
       return queryablePeople.FirstOrDefault(perspn => person.Phone == phoneNumber);
   }
   

2. Accept expression in Repository method

   // Repository
   public IEnumerable GetPeople(Expression> filter) {
       return _dbContext.People.Where(filter);
   }
   
   // Usage
   public Person GetByPhone(string phoneNumber) {
       return _personRepository.GetPeople(person => person.Phone == phoneNumber).FirstOrDefault();
   }
   

Note: Not any expression filter can be translated to SQL Query by Entity Framework