Class: Neo4jr::Indexer

Inherits:
Object
  • Object
show all
Defined in:
lib/neo4jr/indexer.rb

Constant Summary collapse

RESERVED_IDENTIFIER_KEY = 
'identifier'

Class Method Summary collapse

Class Method Details

.attempt_index(node, property_name, value) ⇒ Object 



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# File 'lib/neo4jr/indexer.rb', line 14

def attempt_index(node, property_name, value)
  @indexer.index(node, RESERVED_IDENTIFIER_KEY, value.to_s) if property_name == RESERVED_IDENTIFIER_KEY
end

.enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/neo4jr/indexer.rb', line 10

def enabled?
  !@indexer.nil?
end

.find_node_by_identifier(identifier_value) ⇒ Object 



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# File 'lib/neo4jr/indexer.rb', line 18

def find_node_by_identifier(identifier_value)
  hits    = @indexer.getNodes(RESERVED_IDENTIFIER_KEY, identifier_value)
  nodes   = hits.iterator
  results = []
  results << nodes.next while nodes.hasNext
  if results.size > 1
    results.sort!{|a, b| a.getId <=> b.getId}
    results.each_with_index{|node, index| @indexer.removeIndex(node, RESERVED_IDENTIFIER_KEY, identifier_value) if index < results.size}
  end
  results.last
end

.use(service) ⇒ Object 



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# File 'lib/neo4jr/indexer.rb', line 6

def use(service)
  @indexer = LuceneIndexService.new(service)
end