Class: StudentsListDB

Inherits:
Object
  • Object
show all
Defined in:
lib/model_gem_source/database/students_list_db.rb

Class Method Summary collapse

Class Method Details

.add_student(student) ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 18

def self.add_student(student)
    StudentsListDB.database.add_student(student.as_json)
end

.count ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 26

def self.count()
    StudentsListDB.database.count()
end

.database ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 30

def self.database
    @database ||= StudentsDB.new()
    @database
end

.get_student(id) ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 6

def self.get_student(id)
    Student.from_json(StudentsListDB.database.select_by_id(id))
end

.get_students_slice(from, to) ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 22

def self.get_students_slice(from, to)
    StudentsListDB.database.select_students(from, to).map { |x| Student.from_json(x) }
end

.remove_student(id) ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 10

def self.remove_student(id)
    StudentsListDB.database.remove_by_id(id)
end

.replace_student(id, student) ⇒ Object 



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# File 'lib/model_gem_source/database/students_list_db.rb', line 14

def self.replace_student(id, student)
    StudentsListDB.database.replace_by_id(id, student.as_json)
end