Sha256: ae2ccc773eea2393f90b8c443de907b626bcd0de18a6f35d0b6adb978e1eec1b
Contents?: true
Size: 1.85 KB
Versions: 7
Compression:
Stored size: 1.85 KB
Contents
require 'nera_database'
require 'nera_simulator'
module NERA
# This class access the simulator table.
class SimulatorRecords
# keys of the simulator table
ATTRIBUTES = [ [:id, Integer], [:name, String], [:created_at, DateTime], [:updated_at, DateTime] ]
# NERA::Database object
@db
# argument is the path to database file
def initialize( db_file)
@db = NERA::Database.new( db_file)
end
# if file already exists, returns false
def self.create_table( db_file)
NERA::Database.create_table( db_file)
end
# return keys of the simulator table
def keys
keys = ATTRIBUTES.map do |x|
x[0]
end
end
# sim_class must be a subclass of NERA::Simulator
def add( sim_class)
unless sim_class.superclass == NERA::Simulator
raise ArgumentError, "must be a subclass of NERA::Simulator"
end
name = sim_class.to_s
found = @db.find_all do |rec|
rec[:name] == name
end
if found
$stderr.puts "Same simulator already exists."
return nil
end
d = DateTime.now
h = { :name => name, :created_at => d, :updated_at => d}
id = @db.add( h)
return id
end
def get_class( id)
raise ArgumentError unless id.is_a?(Integer)
rec = @db.find_by_id(id)
return nil unless rec
klass = eval(rec[:name])
return klass
end
def list
l = @db.find_all do |r| true end
return l.to_a
end
def touch( id)
raise ArgumentError unless id.is_a?( Integer)
rec = @db.find_by_id( id)
return nil unless rec
rec[:updated_at] = DateTime.now
@db.update( rec)
end
def destroy( id)
raise ArgumentError unless id.is_a?(Integer)
@db.destroy(id)
end
def transaction
@db.transaction {
yield
}
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems