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module Sufia
module Statistics
# An abstract class for running a query against the Solr terms component
# you must implement `index_key` in the concrete class.
#
# WARNING: you must use a term that isn't parsed (i.e. use _sim instead of _tesim)
class TermQuery
def initialize(limit = 5)
@limit = limit
end
def query
term = index_key
# Grab JSON response (looks like {"terms": {"depositor_tesim": {"mjg36": 3}}} for depositor)
json = solr_connection.get 'terms', params: { 'terms.fl' => term,
'terms.sort' => 'count',
'terms.limit' => @limit,
wt: 'json',
'json.nl' => 'map',
omitHeader: 'true' }
unless json
Rails.logger.error "Unable to reach TermsComponent via Solr connection. Is it enabled in your solr config?"
return []
end
Result.build(json['terms'][term])
end
class Result
# @param [Array<Array>] rows list of of tuples (label, value)
def self.build(rows)
rows.map { |row| Result.new(*row) }
end
def initialize(label, value)
@data = { label: label, data: value }
end
def label
@data[:label]
end
def value
@data[:data]
end
# This enables hash equivalence
def ==(other)
other == @data
end
# Allows us to create a Flot charts pie-graph
def as_json(opts)
@data.as_json(opts)
end
end
private
def solr_connection
ActiveFedora::SolrService.instance.conn
end
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems