Class: Valkyrie::Persistence::Solr::Queries::FindReferencesQuery

Inherits:
Object
  • Object
show all
Defined in:
lib/valkyrie/persistence/solr/queries/find_references_query.rb

Overview

Responsible for efficently returning all Resources which are referenced in a given Resource‘s property.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(resource:, property:, connection:, resource_factory:) ⇒ FindReferencesQuery

Returns a new instance of FindReferencesQuery.



7
8
9
10
11
12
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 7

def initialize(resource:, property:, connection:, resource_factory:)
  @resource = resource
  @property = property
  @connection = connection
  @resource_factory = resource_factory
end

Instance Attribute Details

#connection ⇒ Object (readonly)

Returns the value of attribute connection.



6
7
8
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 6

def connection
  @connection
end

#property ⇒ Object (readonly)

Returns the value of attribute property.



6
7
8
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 6

def property
  @property
end

#resource ⇒ Object (readonly)

Returns the value of attribute resource.



6
7
8
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 6

def resource
  @resource
end

#resource_factory ⇒ Object (readonly)

Returns the value of attribute resource_factory.



6
7
8
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 6

def resource_factory
  @resource_factory
end

Instance Method Details

#each ⇒ Object 



18
19
20
21
22
23
24
25
26
27
28
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 18

def each
  docs = DefaultPaginator.new
  while docs.has_next?
    params = { q: query, defType: 'lucene' }
    result = connection.paginate(docs.next_page, docs.per_page, 'select', params: params)
    docs = result.fetch('response').fetch('docs')
    docs.each do |doc|
      yield resource_factory.to_resource(object: doc)
    end
  end
end

#id ⇒ Object 



34
35
36
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 34

def id
  resource.id.to_s
end

#query ⇒ Object 



30
31
32
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 30

def query
  "{!join from=#{property}_ssim to=join_id_ssi}id:#{id}"
end

#run ⇒ Object 



14
15
16
 
# File 'lib/valkyrie/persistence/solr/queries/find_references_query.rb', line 14

def run
  enum_for(:each)
end