Class: BioLocus::TokyoCabinetMapper

Inherits:
Object
  • Object
show all
Defined in:
lib/bio-locus/dbmapper.rb

Instance Method Summary collapse

Constructor Details

#initialize(dbname) ⇒ TokyoCabinetMapper

Returns a new instance of TokyoCabinetMapper.



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# File 'lib/bio-locus/dbmapper.rb', line 50

def initialize dbname
  begin
    require 'tokyocabinet'
  rescue LoadError
    $stderr.print "Error: Missing tokyocabinet. Install with command 'gem install tokyocabinet'\n"
    exit 1
  end
  @hdb = TokyoCabinet::HDB::new
  if File.exist?(dbname)
    if !@hdb.open(dbname, TokyoCabinet::HDB::OREADER)
      ecode = @hdb.ecode
      raise sprintf("open error: %s\n", @hdb.errmsg(ecode))
    end
  else
    if !@hdb.open(dbname, TokyoCabinet::HDB::OWRITER | TokyoCabinet::HDB::OCREAT)
      ecode = @hdb.ecode
      raise sprintf("open error: %s\n", @hdb.errmsg(ecode))
    end
  end
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/bio-locus/dbmapper.rb', line 71

def [] key
  @hdb.get(key)
end

#[]=(key, value) ⇒ Object 



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# File 'lib/bio-locus/dbmapper.rb', line 75

def []= key, value
  if !@hdb.put(key,value) 
    ecode = @hdb.ecode
    raise sprintf("put error: %s\n", @hdb.errmsg(ecode))
  end
end

#close ⇒ Object 



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# File 'lib/bio-locus/dbmapper.rb', line 82

def close
  if !@hdb.close
    ecode = @hdb.ecode
    raise sprintf("close error: %s\n", @hdb.errmsg(ecode))
  end
end