Class: ActiveRecord::Importer::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/activerecord/importer/runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(db_config_path = 'database.yml', db_source_key = 'source', db_dest_key = 'dest') ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/activerecord/importer/runner.rb', line 7

def initialize( db_config_path = 'database.yml', db_source_key = 'source', db_dest_key = 'dest' )

  @db_config = YAML.load_file( db_config_path )

  @db_source = @db_config[ db_source_key ]
  @db_dest   = @db_config[ db_dest_key   ]
  
  puts "datasource old:"
  pp @db_source

  puts "datasource new:"
  pp @db_dest
end

Instance Method Details

#debug_dump_table(sql) ⇒ Object 



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# File 'lib/activerecord/importer/runner.rb', line 72

def debug_dump_table( sql )
  
  ActiveRecord::Base.establish_connection( @db_source )
  puts "OK - Verbindung erfolgreich aufgebaut!!!"

  recs = ActiveRecord::Base.connection.execute( sql )

  puts "OK - Found #{recs.length} Records!!!"

  puts "SQL>#{sql}<"

  recs.each do |rec|
    print '.'
    debug_dump_record( rec )
  end

  puts "OK"
end

#import(sql, model_clazz) ⇒ Object

sql - source query model_clazz - target model/table



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# File 'lib/activerecord/importer/runner.rb', line 25

def import( sql, model_clazz  )  

  ActiveRecord::Base.establish_connection( @db_source )
  
  recs = ActiveRecord::Base.connection.execute( sql )

  puts "SQL>#{sql}<"

  puts "#{model_clazz.name} -> Found #{recs.length} Records"

  ActiveRecord::Base.establish_connection(  @db_dest )

  recs.each_with_index do |rec,i|

    # entertain use on console .....o....o...1000.. etc.
    if ((i+1) % 1000) == 0
      print (i+1)
    elsif ((i+1) % 100) == 0
      print 'O'
    elsif ((i+1) % 10) == 0
      print 'o'
    else
      print '.'  
    end
     
    print "\r\n" if ((i+1) % 80) == 0   # add new line after 80 records

    #debug_dump_record( rec )
    model_clazz.create!( downcase_hash( rec ) )  
  end

  puts "OK"    
end

#version_string ⇒ Object 



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# File 'lib/activerecord/importer/runner.rb', line 59

def version_string
  
  username     = ENV['USERNAME']     || '!!(username missing)'
  computername = ENV['COMPUTERNAME'] || '!!(computername missing)'
  
  buf = ""
  buf << "generated on #{Time.now} "
  buf << "by #{username} @ #{computername} " 
  buf << "using Ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) [#{RUBY_PLATFORM}]"
  buf
end