Class: Elastify::Helpers::QueryBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/elastify/helpers/query_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scroll_size: 15, scroll_timeout: '1m') ⇒ QueryBuilder

Returns a new instance of QueryBuilder.



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# File 'lib/elastify/helpers/query_builder.rb', line 7

def initialize(scroll_size: 15, scroll_timeout: '1m')
    @queries = []
    @filters = []
    @sort = {}
    @scroll_size = scroll_size
    @scroll_timeout = scroll_timeout
end

Instance Attribute Details

#filters ⇒ Object

Returns the value of attribute filters.



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# File 'lib/elastify/helpers/query_builder.rb', line 5

def filters
  @filters
end

#queries ⇒ Object

Returns the value of attribute queries.



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# File 'lib/elastify/helpers/query_builder.rb', line 5

def queries
  @queries
end

#scroll_size(size) ⇒ Object

Returns the value of attribute scroll_size.



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# File 'lib/elastify/helpers/query_builder.rb', line 5

def scroll_size
  @scroll_size
end

#scroll_timeout(timeout) ⇒ Object

Returns the value of attribute scroll_timeout.



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# File 'lib/elastify/helpers/query_builder.rb', line 5

def scroll_timeout
  @scroll_timeout
end

#sort(field, direction) ⇒ Object

Returns the value of attribute sort.



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# File 'lib/elastify/helpers/query_builder.rb', line 5

def sort
  @sort
end

Instance Method Details

#filter(*args) ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 19

def filter(*args)
    must_filter(*args)
end

#must_filter(fields, field_rules) ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 23

def must_filter(fields, field_rules)
    @filters << { type: :must, field_rules: field_rules, fields: fields.instance_of?(Array) ? fields : [fields] }
end

#scroll(scroll_size, scroll_timeout) ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 35

def scroll(scroll_size, scroll_timeout)
    @scroll_size = scroll_size
    @scroll_timeout = scroll_timeout
end

#search_term(fields, term) ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 15

def search_term(fields, term)
    @queries << { term: term, fields: fields.instance_of?(Array) ? fields : [fields] }
end

#should_filter(fields, field_rules) ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 27

def should_filter(fields, field_rules)
    @filters << { type: :should, field_rules: field_rules, fields: fields.instance_of?(Array) ? fields : [fields] }
end

#to_dsl ⇒ Object 



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# File 'lib/elastify/helpers/query_builder.rb', line 48

def to_dsl
    max_scroll_size = 100; @scroll_size ||= 15
    @scroll_size = @scroll_size.to_i <= max_scroll_size ? @scroll_size : max_scroll_size
    if @sort.blank?
        @sort = @queries.blank? ? { id: { order: :desc } } : { _score: { order: :desc } }
    end
    dsl = { sort: @sort, size: @scroll_size, query: {} }
    if @queries.blank? and @filters.blank?
        dsl[:query][:match_all] = {}
        return dsl
    end
    dsl[:query] = { bool: { must: [], must_not: [], should: [] } }
    if @queries.present?
        dsl[:query][:bool][:must] += @queries.map do |query|
            { multi_match: { query: "#{query[:term].sanitize}", fields: query[:fields], operator: :and } }
        end
    end
    if @filters.present?
        @filters.select { |filter| filter[:type].equal?(:must) }.each do |filter|
            filter[:fields].each do |field|
                dsl[:query][:bool][:must] += map_has(field, filter[:field_rules][:has]) if filter[:field_rules][:has].present?
                dsl[:query][:bool][:must] << map_in(field, filter[:field_rules][:in]) if filter[:field_rules][:in].present?
                dsl[:query][:bool][:must_not] << map_in(field, filter[:field_rules][:not_in]) if filter[:field_rules][:not_in].present?
                dsl[:query][:bool][:must] << map_range(field, filter[:field_rules][:range]) if filter[:field_rules][:range].present?
            end
        end
        @filters.select { |filter| filter[:type].equal?(:should) }.each do |filter|
            filter[:fields].each_with_index do |field, index|
                dsl[:query][:bool][:should][index] ||= { bool: { must: [], must_not: [] } }
                dsl[:query][:bool][:should][index][:bool][:must] += map_has(field, filter[:field_rules][:has]) if filter[:field_rules][:has].present?
                dsl[:query][:bool][:should][index][:bool][:must] << map_in(field, filter[:field_rules][:in]) if filter[:field_rules][:in].present?
                dsl[:query][:bool][:should][index][:bool][:must_not] << map_in(field, filter[:field_rules][:not_in]) if filter[:field_rules][:not_in].present?
                dsl[:query][:bool][:should][index][:bool][:must] << map_range(field, filter[:field_rules][:range]) if filter[:field_rules][:range].present?
            end
        end
        dsl[:query][:bool][:minimum_number_should_match] = 1 if dsl[:query][:bool][:should].present?
    end
    return dsl
end