Class: ActiveFedora::Associations::HasAndBelongsToManyAssociation

Inherits:
CollectionAssociation show all
Defined in:
lib/active_fedora/associations/has_and_belongs_to_many_association.rb

Overview

:nodoc:

Instance Attribute Summary

Attributes inherited from CollectionAssociation

#proxy

Attributes inherited from Association

#inversed, #owner, #reflection, #target

Instance Method Summary collapse

Methods inherited from CollectionAssociation

#add_to_target, #any?, #build, #concat, #create, #create!, #delete, #delete_all, #destroy, #destroy_all, #empty?, #find, #ids_reader, #ids_writer, #include?, #last, #load_from_solr, #load_target, #merge_target_lists, #null_scope?, #reader, #replace, #reset, #scope, #size, #target=, #to_ary, #writer

Methods inherited from Association

#association_scope, #initialize_attributes, #load_target, #loaded!, #loaded?, #reload, #reset, #scope, #set_inverse_instance, #stale_target?, #target_scope

Constructor Details

#initialize(owner, reflection) ⇒ HasAndBelongsToManyAssociation

Returns a new instance of HasAndBelongsToManyAssociation



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 5

def initialize(owner, reflection)
  super
end

Instance Method Details

#concat_records(*records) ⇒ Object



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 33

def concat_records(*records)
  result = true

  records.flatten.each do |record|
    raise_on_type_mismatch(record)
    add_to_target(record) do |r|
      result &&= insert_record(record)
    end
  end

  result && records
end

#count(options = {}) ⇒ Object

In a HABTM, just look in the RDF, no need to run a count query from solr.



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 61

def count(options = {})
  owner[reflection.foreign_key].size
end

#find_targetObject



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 47

def find_target
  page_size = @reflection.options[:solr_page_size]
  page_size ||= 200
  ids = owner[reflection.foreign_key]
  return [] if ids.blank?
  solr_result = []
  0.step(ids.size,page_size) do |startIdx|
    query = ActiveFedora::SolrQueryBuilder.construct_query_for_ids(ids.slice(startIdx,page_size))
    solr_result += ActiveFedora::SolrService.query(query, rows: page_size)
  end
  return ActiveFedora::QueryResultBuilder.reify_solr_results(solr_result)
end

#firstObject



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 65

def first
  load_target.first
end

#insert_record(record, force = true, validate = true) ⇒ Object



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# File 'lib/active_fedora/associations/has_and_belongs_to_many_association.rb', line 9

def insert_record(record, force = true, validate = true)
  if record.new_record?
    if force
      record.save!
    else
      return false unless record.save(:validate => validate)
    end
  end

  owner[reflection.foreign_key] ||= []
  owner[reflection.foreign_key] += [record.id]

  if @owner.new_record? and @reflection.options[:inverse_of]
    ActiveFedora::Base.logger.warn("has_and_belongs_to_many #{@reflection.inspect} is cowardly refusing to insert the inverse relationship into #{record}, because #{@owner} is not persisted yet.") if ActiveFedora::Base.logger
  elsif @reflection.options[:inverse_of]
    inverse = @reflection.inverse_of
    record[inverse.foreign_key] ||= []
    record[inverse.foreign_key] += [owner.id]
    record.save
  end

  return true
end