class G2R::RDBMS::Connection

Public Class Methods

new(options) click to toggle source
# File lib/graph2relational/rdbms-connection.rb, line 5
def initialize(options)
  # sequel
  @db = Sequel.connect(options)
end

Public Instance Methods

create_table(table) click to toggle source
# File lib/graph2relational/rdbms-connection.rb, line 10
def create_table(table)
  @db.create_table! table.name.to_sym do

    table.columns.each do |column|
      # primary key
      if column.primary_key?
        primary_key column.name.to_sym
      # foreign key
      elsif column.foreign_key?
        foreign_key column.name.to_sym, column.target_table.to_sym
        index column.name.to_sym
      # common column
      else
        String column.name.to_sym
      end
    end
  end
end
insert_data(table) click to toggle source
# File lib/graph2relational/rdbms-connection.rb, line 29
def insert_data(table)
   @db.transaction do
     table.data.each do |row|
       @db[table.name.to_sym].insert(row)
     end
   end
end