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74 lines
1.8 KiB
74 lines
1.8 KiB
# NOTE: Implement further methods from ActiveRecord::Relation here as needed
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module Carto
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class OffdatabaseQueryAdapter
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# @param query ActiveRecord::Relation
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# @param order_by_asc_or_desc_by_attribute Hash { key: value, key: value } where
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# key = { String => { submodel: String|nil, attribute: String }, ... }
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# value = "asc" | "desc"
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def initialize(query, order_by_asc_or_desc_by_attribute)
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@query = query
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@order_by_asc_or_desc_by_attribute = order_by_asc_or_desc_by_attribute
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@offset = 0
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@limit = nil
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end
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def offset(offset)
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@offset = offset
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self
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end
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def limit(limit)
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@limit = limit
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self
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end
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def all
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results
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end
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def map
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results.map { |a|
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yield(a)
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}
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end
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def count
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results.count
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end
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def size
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results.size
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end
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def first
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results.first
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end
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private
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def results
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@results ||= get_results
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end
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# NOTE: Sorting for model associations (which return arrays) or arrays will be done based on length
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# e.g. visualization.analyses
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def get_results
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all = @query.all
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@order_by_asc_or_desc_by_attribute.each do |attribute, asc_or_desc|
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# Cache attribute type
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is_array = all.present? && all.first.send(attribute).respond_to?(:each)
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all = all.sort do |x, y|
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x_attribute = is_array ? x.send(attribute).count : x.send(attribute)
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y_attribute = is_array ? y.send(attribute).count : y.send(attribute)
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x_attribute = 0 if x_attribute.nil?
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y_attribute = 0 if y_attribute.nil?
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asc_or_desc == "asc" ? x_attribute <=> y_attribute : y_attribute <=> x_attribute
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end
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end
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all[@offset, @limit.nil? ? all.count : @limit]
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end
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end
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end
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