Module: FeideeUtils::Record::Persistent::ClassMethods

Included in:
FeideeUtils::Record
Defined in:
lib/feidee_utils/record/persistent.rb

Instance Method Summary collapse

Instance Method Details

#all ⇒ Object

Persistent



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# File 'lib/feidee_utils/record/persistent.rb', line 26

def all
  arr = []
  database.query("SELECT * FROM #{self.table_name}") do |result|
    result.each do |raw_row|
      arr << self.new(result.columns, result.types, raw_row)
    end
  end
  arr
end

#find(id) ⇒ Object 



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# File 'lib/feidee_utils/record/persistent.rb', line 49

def find(id)
  find_by_id(id) or raise "No #{self.name} of poid #{id} found"
end

#find_by_id(id) ⇒ Object 



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# File 'lib/feidee_utils/record/persistent.rb', line 36

def find_by_id(id)
  raw_result = database.query("SELECT * FROM #{self.table_name} WHERE #{self.id_field_name} = ?", id)

  raw_row = raw_result.next
  return nil if raw_row == nil

  if raw_result.next != nil
    raise "Getting more than one result with the same ID #{id} in table #{self.table_name}."
  end

  self.new(raw_result.columns, raw_result.types, raw_row)
end

#genereate_names(subclass) ⇒ Object

Names Must be invoked by Record.inherited



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# File 'lib/feidee_utils/record/persistent.rb', line 8

def genereate_names subclass
  entity_name =
    if i = subclass.name.rindex("::")
      subclass.name[(i+2)..-1]
    else
      subclass.name
    end

  id_field_name = entity_name.sub(/^[A-Z]/) { $&.downcase } + "POID"
  table_name = "t_" + entity_name.gsub(/([a-z\d])([A-Z\d])/, '\1_\2').downcase
  subclass.class_exec do
    define_singleton_method :entity_name do entity_name end
    define_singleton_method :id_field_name do id_field_name end
    define_singleton_method :table_name do table_name end
  end
end