Class: OpenBEL::Nanopub::NanopubFacets
- Inherits:
-
Object
- Object
- OpenBEL::Nanopub::NanopubFacets
- Includes:
- Mongo, Helpers::UUIDGenerator, FacetAPI, FacetFilter
- Defined in:
- lib/openbel/api/nanopub/mongo_facet.rb
Constant Summary
Constants included from FacetFilter
FacetFilter::EMPTY, FacetFilter::NANOPUB_PARTS
Instance Method Summary collapse
- #delete_all_facets ⇒ Object
- #delete_facets(facets) ⇒ Object
- #ensure_all_indexes ⇒ Object
- #find_facets(query, filters, facet_value_limit = -1)) ⇒ Object
-
#initialize(options = {}) ⇒ NanopubFacets
constructor
A new instance of NanopubFacets.
Methods included from FacetFilter
#make_filter, #map_citation_facets, #map_experiment_context_facets, #map_metadata_facets, #map_nanopub_facets
Methods included from FacetAPI
#create_facets, #find_facets_by_filters, #remove_facets_by_filters
Constructor Details
#initialize(options = {}) ⇒ NanopubFacets
Returns a new instance of NanopubFacets.
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# File 'lib/openbel/api/nanopub/mongo_facet.rb', line 16 def initialize( = {}) host = [:host] port = [:port] db = [:database] @db = MongoClient.new( host, port, :op_timeout => nil, :pool_size => 30 ).db(db) # Authenticate user if provided. username = [:username] password = [:password] if username && password auth_db = [:authentication_database] || db @db.authenticate(username, password, nil, auth_db) end @nanopub = @db[:nanopub] @nanopub_facet_cache = @db[:nanopub_facet_cache] # ensure all indexes are created and maintained ensure_all_indexes end |
Instance Method Details
#delete_all_facets ⇒ Object
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# File 'lib/openbel/api/nanopub/mongo_facet.rb', line 99 def delete_all_facets @nanopub_facet_cache.find( {}, :fields => {:_id => 0, :cache_collection => 1} ).each do |doc| cache_collection = doc['cache_collection'] @db[cache_collection].drop() end # remove all entries in nanopub_facet_cache @nanopub_facet_cache.remove({}) end |
#delete_facets(facets) ⇒ Object
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# File 'lib/openbel/api/nanopub/mongo_facet.rb', line 81 def delete_facets(facets) # Add zero-filter to facets; clears the default search facets = facets.to_a facets.unshift([]) # Drop facet cache collections @nanopub_facet_cache.find( {:filters => {:$in => facets}}, :fields => {:_id => 0, :cache_collection => 1} ).each do |doc| cache_collection = doc['cache_collection'] @db[cache_collection].drop() end # remove filter match entries in nanopub_facet_cache @nanopub_facet_cache.remove({:filters => {:$in => facets}}) end |
#ensure_all_indexes ⇒ Object
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# File 'lib/openbel/api/nanopub/mongo_facet.rb', line 112 def ensure_all_indexes @nanopub_facet_cache.ensure_index([ [:"filters.category", Mongo::ASCENDING], [:"filters.name", Mongo::ASCENDING] ], :background => true ) end |
#find_facets(query, filters, facet_value_limit = -1)) ⇒ Object
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# File 'lib/openbel/api/nanopub/mongo_facet.rb', line 42 def find_facets(query, filters, facet_value_limit = -1) sorted_filters = sort_filters(filters) cache_collection = facet_cache_collection(sorted_filters) if no_collection?(cache_collection) cache_collection = "nanopub_facet_cache_#{generate_uuid}" create_aggr = create_aggregation(cache_collection, query) @nanopub.aggregate(create_aggr[:pipeline], create_aggr[:options]) @nanopub_facet_cache.insert({ :filters => sorted_filters, :cache_collection => cache_collection }) end # set up field projection based on value limit field_projection = { :_id => 0, :category => 1, :name => 1, :values => 1 } if facet_value_limit > 0 field_projection[:values] = {:$slice => facet_value_limit} end # cursor facets and apply "filter" @db[cache_collection].find({}, :fields => field_projection).map { |facet_doc| category, name = facet_doc.values_at('category', 'name') facet_doc['values'].each do |value| value[:filter] = MultiJson.dump({ :category => category, :name => name, :value => value['value'] }) end facet_doc } end |