Class: RMARC::Record

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/rmarc/model/record.rb

Overview

This class represents a MARC record.

The module Enumerable is included to enable searching within variable fields using each.

To iterate over all fields:

record.each { |f| print f }

To retrieve the data field for tag 245:

field = record.find {|f| f.tag == '245'}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(leader = nil) ⇒ Record

Returns a new instance of Record.



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# File 'lib/rmarc/model/record.rb', line 41

def initialize(leader = nil)
  @leader = leader
  @fields = Array.new
end

Instance Attribute Details

#fields ⇒ Object

Returns the value of attribute fields.



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# File 'lib/rmarc/model/record.rb', line 39

def fields
  @fields
end

#leader ⇒ Object

Returns the value of attribute leader.



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# File 'lib/rmarc/model/record.rb', line 39

def leader
  @leader
end

Instance Method Details

#add(fld) ⇒ Object

Adds a field.



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# File 'lib/rmarc/model/record.rb', line 47

def add(fld)
  @fields.push(fld)
end

#each ⇒ Object

Implements Enumarable.each to provide an iterator over all variable fields.



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# File 'lib/rmarc/model/record.rb', line 57

def each
  for field in @fields
    yield field
  end
end

#remove(fld) ⇒ Object

Removes a field.



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# File 'lib/rmarc/model/record.rb', line 52

def remove(fld)
  @fields.delete(fld)
end

#to_s ⇒ Object

Returns a string representation of the record.

Example:

Leader: 00714cam a2200205 a 4500
001 12883376
005 20030616111422.0
008 020805s2002    nyu    j      000 1 eng  
020   $a0786808772
020   $a0786816155 (pbk.)
040   $aDLC$cDLC$dDLC
100 1 $aChabon, Michael.
245 10$aSummerland /$cMichael Chabon.
250   $a1st ed.
260   $aNew York :$bMiramax Books/Hyperion Books for Children,$cc2002.
300   $a500 p. ;$c22 cm.
650  1$aFantasy.
650  1$aBaseball$vFiction.
650  1$aMagic$vFiction.

Use RMARC::MarcStreamWriter to serialize records to ISO 2709 format.



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# File 'lib/rmarc/model/record.rb', line 84

def to_s
  a = "Leader: #{@leader.to_s}\n"
  @fields.each { |f| a << "#{f.to_s}\n" }
  return a
end