Class: Queries::Query::Filter

Inherits:
Queries::Query show all
Includes:
Concerns::Users
Defined in:
lib/queries/query/filter.rb

Overview

Overview

This class manages params and nesting of filter queries.

Each inheriting class defines a PARAMS variable. Each concern defines ‘self.params`. Together these two lists are used to compose a list of acceptable params, dynamically, based on the nature of the nested queries.

Test coverage is currently in /spec/lib/queries/otu/filter_spec.rb.

!! When adding a new query tests do some linting of parameters, constants etc. Run them early and often !!

Constant Summary collapse

SUBQUERIES =

!! SUBQUERIES is cross-referenced in app/views/javascript/vue/components/radials/filter/links/*.js models. !! When you add a reference here, ensure corresponding js model is aligned. There are tests that will catch if they are not.

For example: github.com/SpeciesFileGroup/taxonworks/app/javascript/vue/components/radials/filter/constants/queryParam.js github.com/SpeciesFileGroup/taxonworks/app/javascript/vue/components/radials/filter/constants/filterLinks.js github.com/SpeciesFileGroup/taxonworks/app/javascript/vue/components/radials/filter/links/CollectionObject.js

You may also need a reference in app/javascript/vue/routes/routes.js app/javascript/vue/components/radials/linker/links

This is read as :to <- [:from1, from2…] ].

!! If you add a ‘def <model>_query_facet“ to a filter you will get warnings if that !! model is not referencened in this constant.

{
  asserted_distribution: [:source, :otu, :biological_association, :taxon_name, :dwc_occurrence],
  biological_association: [:source, :collecting_event, :otu, :collection_object, :taxon_name, :asserted_distribution], # :field_occurrence
  biological_associations_graph: [:biological_association, :source],
  collecting_event: [:source, :collection_object, :biological_association, :otu, :image, :taxon_name, :dwc_occurrence],
  collection_object: [:source, :loan, :otu, :taxon_name, :collecting_event, :biological_association, :extract, :image, :observation, :dwc_occurrence],
  content: [:source, :otu, :taxon_name, :image],
  controlled_vocabulary_term: [:data_attribute],
  data_attribute: [:collection_object, :collecting_event, :taxon_name, :otu],
  dwc_occurrence: [:asserted_distribution, :collection_object, :collecting_event],
  descriptor: [:source, :observation, :otu],
  extract: [:source, :otu, :collection_object, :observation],
  field_occurrence: [], # [:source, :otu, :collecting_event, :biological_association, :observation, :taxon_name, :extract],
  image: [:content, :collection_object, :collecting_event, :otu, :observation, :source, :taxon_name ],
  loan: [:collection_object, :otu],
  observation: [:collection_object, :descriptor, :image, :otu, :source, :taxon_name],
  otu: [:asserted_distribution, :biological_association, :collection_object, :collecting_event, :content, :descriptor, :extract, :image, :loan, :observation, :source, :taxon_name ],
  person: [],
  source: [:asserted_distribution,  :biological_association, :collecting_event, :collection_object, :content, :descriptor, :extract, :image, :observation, :otu, :taxon_name],
  taxon_name: [:asserted_distribution, :biological_association, :collection_object, :collecting_event, :image, :otu, :source ]
}.freeze
FILTER_QUERIES =

We could consider ‘.safe_constantize` to make this a f(n), but we’d have to have a list somewhere else anyways to further restrict allowed classes.

{
  asserted_distribution_query: '::Queries::AssertedDistribution::Filter',
  biological_association_query: '::Queries::BiologicalAssociation::Filter',
  biological_associations_graph_query: '::Queries::BiologicalAssociationsGraph::Filter',
  collecting_event_query: '::Queries::CollectingEvent::Filter',
  collection_object_query: '::Queries::CollectionObject::Filter',
  content_query: '::Queries::Content::Filter',
  controlled_vocabulary_term_query: '::Queries::ControlledVocabularyTerm::Filter',
  data_attribute_query: '::Queries::DataAttribute::Filter',
  descriptor_query: '::Queries::Descriptor::Filter',
  document_query: '::Queries::Document::Filter',
  dwc_occurrence_query: '::Queries::DwcOccurrence::Filter',
  extract_query: '::Queries::Extract::Filter',
  field_occurrence_query: '::Queries::FieldOccurrence::Filter',
  image_query: '::Queries::Image::Filter',
  loan_query: '::Queries::Loan::Filter',
  observation_query: '::Queries::Observation::Filter',
  otu_query: '::Queries::Otu::Filter',
  person_query: '::Queries::Person::Filter',
  source_query: '::Queries::Source::Filter',
  taxon_name_query: '::Queries::TaxonName::Filter',
}.freeze

Instance Attribute Summary collapse

Attributes inherited from Queries::Query

#query_string, #terms

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Queries::Query

#alphabetic_strings, #alphanumeric_strings, base_name, #base_name, #base_query, #build_terms, #cached_facet, #end_wildcard, #levenshtein_distance, #match_ordered_wildcard_pieces_in_cached, #no_terms?, referenced_klass, #referenced_klass, #referenced_klass_except, #referenced_klass_intersection, #referenced_klass_union, #start_and_end_wildcard, #start_wildcard, #table, #wildcard_pieces

Constructor Details

#initialize(query_params) ⇒ Object

Returns Hash.



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# File 'lib/queries/query/filter.rb', line 245

def initialize(query_params)

  # Reference to query_params, i.e. always permitted
  @api = boolean_param(query_params, :api)
  @recent = boolean_param(query_params, :recent)
  @object_global_id = query_params[:object_global_id]

  @venn = query_params[:venn]
  @venn_mode = query_params[:venn_mode]

  # !! This is the *only* place Current.project_id should be seen !! It's still not the best
  # way to implement this, but we use it to optimize the scope of sub/nested-queries efficiently.
  # Ideally we'd have a global class param that stores this that all Filters would have access to,
  # rather than an instance variable.
  @project_id = query_params[:project_id] || Current.project_id

  @paginate = boolean_param(query_params, :paginate)
  @per = query_params[:per]
  @page = query_params[:page]

  # After this point, if you started with ActionController::Parameters,
  # then all values have been explicitly permitted.
  if query_params.kind_of?(Hash)
    @params = query_params
  elsif query_params.kind_of?(ActionController::Parameters)
    @params = deep_permit(query_params).to_hash.deep_symbolize_keys
  elsif query_params.nil?
    @params = {}
  else
    raise TaxonWorks::Error, "can not initialize filter with #{query_params.class.name}"
  end

  set_identifier_params(params)
  set_nested_queries(params)
  set_user_dates(params)
end

Instance Attribute Details

#api ⇒ Object

Returns Boolean When true api_except_params is applied and other restrictions are placed:

- :venn param is ignored.

Returns:

  • Boolean When true api_except_params is applied and other restrictions are placed:

    - :venn param is ignored



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# File 'lib/queries/query/filter.rb', line 211

def api
  @api
end

#asserted_distribution_query ⇒ Query::AssertedDistributionn::Filter?

Returns:

  • (Query::AssertedDistributionn::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 147

def asserted_distribution_query
  @asserted_distribution_query
end

#biological_association_query ⇒ Query::BiologicalAssociation::Filter?

Returns:

  • (Query::BiologicalAssociation::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 150

def biological_association_query
  @biological_association_query
end

#biological_associations_graph_query ⇒ Query::BiologicalAssociationsGraph::Filter?

Returns:

  • (Query::BiologicalAssociationsGraph::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 153

def biological_associations_graph_query
  @biological_associations_graph_query
end

#collecting_event_query ⇒ Query::CollectingEvent::Filter?

Returns:

  • (Query::CollectingEvent::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 162

def collecting_event_query
  @collecting_event_query
end

#collection_object_query ⇒ Query::TaxonName::Filter?

Returns:

  • (Query::TaxonName::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 159

def collection_object_query
  @collection_object_query
end

#content_query ⇒ Query::Content::Filter?

Returns:

  • (Query::Content::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 165

def content_query
  @content_query
end

#controlled_vocabulary_term_query ⇒ Query::ControlledVocabularyTerm::Filter?

Returns:

  • (Query::ControlledVocabularyTerm::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 156

def controlled_vocabulary_term_query
  @controlled_vocabulary_term_query
end

#data_attribute_query ⇒ Query::DataAttribute::Filter?

Returns:

  • (Query::DataAttribute::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 168

def data_attribute_query
  @data_attribute_query
end

#descriptor_query ⇒ Query::Descriptor::Filter?

Returns:

  • (Query::Descriptor::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 171

def descriptor_query
  @descriptor_query
end

#document_query ⇒ Query::Document::Filter?

Returns:

  • (Query::Document::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 174

def document_query
  @document_query
end

#dwc_occurrence_query ⇒ Query::DwcOccurrence::Filter?

Returns:

  • (Query::DwcOccurrence::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 177

def dwc_occurrence_query
  @dwc_occurrence_query
end

#extract_query ⇒ Query::Extract::Filter?

Returns:

  • (Query::Extract::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 192

def extract_query
  @extract_query
end

#field_occurrence_query ⇒ Query::TaxonName::Filter?

Returns:

  • (Query::TaxonName::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 180

def field_occurrence_query
  @field_occurrence_query
end

#image_query ⇒ Query::Image::Filter?

Returns:

  • (Query::Image::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 183

def image_query
  @image_query
end

#loan_query ⇒ Query::Loan::Filter?

Returns:

  • (Query::Loan::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 198

def loan_query
  @loan_query
end

#object_global_id ⇒ Array

Locally these look like gid://taxon-works/Otu/1 Using a global id is equivalent to using <model>_id. I.e. it simply restricts the filter to those matching Model#id.

!! If any global id model name does not match the current filter, then then facet is completely rejected.

Returns:

  • (Array) 


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# File 'lib/queries/query/filter.rb', line 142

def object_global_id
  @object_global_id
end

#observation_query ⇒ Query::Observation::Filter?

Returns:

  • (Query::Observation::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 195

def observation_query
  @observation_query
end

#otu_query ⇒ Query::Otu::Filter?

Returns:

  • (Query::Otu::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 189

def otu_query
  @otu_query
end

#page ⇒ Object

Returns Integer, nil required if paginate == true.

Returns:

  • Integer, nil required if paginate == true



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# File 'lib/queries/query/filter.rb', line 124

def page
  @page
end

#paginate ⇒ Object

Apply pagination within Filter scope

true - apply per and page
false, nil - ignored



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# File 'lib/queries/query/filter.rb', line 120

def paginate
  @paginate
end

#params ⇒ Object (readonly)

!! Using setters directly on query parameters will not alter this variable !! !! This is used strictly during the permission process of ActionController::Parameters !!

Returns:

  • Hash the parsed/permitted params

    that were used to on initialize() only!!



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# File 'lib/queries/query/filter.rb', line 242

def params
  @params
end

#per ⇒ Object

Returns Integer, nil paginate must equal true page must be !nil?.

Returns:

  • Integer, nil paginate must equal true page must be !nil?



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# File 'lib/queries/query/filter.rb', line 129

def per
  @per
end

#person_query ⇒ Query::Person::Filter?

Returns:

  • (Query::Person::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 201

def person_query
  @person_query
end

#project_id ⇒ Array

Parameters:

  • project_id (Array, Integer)

Returns:

  • (Array) 


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# File 'lib/queries/query/filter.rb', line 115

def project_id
  @project_id
end

#recent ⇒ Object

Returns Boolean Applies an order on updated.

Returns:

  • Boolean Applies an order on updated.



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# File 'lib/queries/query/filter.rb', line 205

def recent
  @recent
end

#taxon_name_query ⇒ Query::TaxonName::Filter?

Returns:

  • (Query::TaxonName::Filter, nil) 


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# File 'lib/queries/query/filter.rb', line 186

def taxon_name_query
  @taxon_name_query
end

#venn ⇒ Object

Returns String A JSON full URL containing the base string for a query.

Returns:

  • String A JSON full URL containing the base string for a query



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# File 'lib/queries/query/filter.rb', line 215

def venn
  @venn
end

#venn_mode ⇒ Object

Returns Symbol one of :a, :ab, :b defaults to :ab

:a :ab  :b

( A ( B ) C ).

Returns:

  • Symbol one of :a, :ab, :b defaults to :ab

    :a :ab  :b

    ( A ( B ) C )



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# File 'lib/queries/query/filter.rb', line 221

def venn_mode
  @venn_mode
end

Class Method Details

.annotator_params ⇒ Object

to be merged into included params

Returns:

  • Array, nil a [:a, :b, []] formatted Array



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# File 'lib/queries/query/filter.rb', line 362

def self.annotator_params
  h = nil
  if i = included_annotator_facets
    # Setup with the first
    a = i.shift
    h = a.params

    if !h.last.kind_of?(Hash)
      h << {}
    end

    c = h.last

    # Now do the rest
    i.each do |j|
      p = j.params

      if p.last.kind_of?(Hash)
        c.merge!(p.pop)
      end

      h = p + h
    end
  end
  h
end

.api_except_params ⇒ Object

Any params set here, and in corresponding subclasses will not be permitted when api: true is present



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# File 'lib/queries/query/filter.rb', line 355

def self.api_except_params
  [:venn, :venn_mode]
end

.api_excluded_params ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 389

def self.api_excluded_params
  [
    # if there are things like created_by_id that we deem universally out they go here
  ] + api_except_params
end

.base_filter(params) ⇒ Filter?

Returns the class of filter that is referenced at the base of this parameter set.

Returns:

  • (Filter, nil) —

    the class of filter that is referenced at the base of this parameter set



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# File 'lib/queries/query/filter.rb', line 293

def self.base_filter(params)
  if s = base_query_name(params)
    t = s.gsub('_query', '').to_sym

    if SUBQUERIES.include?(t)
      k = t.to_s.camelcase
      return "Queries::#{k}::Filter".constantize
    else
      return nil
    end
  else
    nil
  end
end

.base_query_name(params) ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 317

def self.base_query_name(params)
  params.keys.select{|s| s =~ /\A.+_query\z/}.first
end

.included_annotator_facets ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 321

def self.included_annotator_facets
  f = [
    ::Queries::Concerns::Users
  ]

  if referenced_klass.annotates?
    f.push ::Queries::Concerns::Polymorphic if self < ::Queries::Concerns::Polymorphic
  else
    # TODO There is room for an AlternateValue concern here
    f.push ::Queries::Concerns::Attributes if self < ::Queries::Concerns::Attributes
    f.push ::Queries::Concerns::Citations if self < ::Queries::Concerns::Citations
    f.push ::Queries::Concerns::Containable if self < ::Queries::Concerns::Containable
    f.push ::Queries::Concerns::DataAttributes if self < ::Queries::Concerns::DataAttributes
    f.push ::Queries::Concerns::DateRanges if self < ::Queries::Concerns::DateRanges
    f.push ::Queries::Concerns::Depictions if self < ::Queries::Concerns::Depictions
    f.push ::Queries::Concerns::Identifiers if self < ::Queries::Concerns::Identifiers
    f.push ::Queries::Concerns::Notes if self < ::Queries::Concerns::Notes
    f.push ::Queries::Concerns::Protocols if self < ::Queries::Concerns::Protocols
    f.push ::Queries::Concerns::Tags if self < ::Queries::Concerns::Tags
  end

  f
end

.instatiated_base_filter(params) ⇒ Object

An instiatied filter, with params set, for params with patterns like ‘otu_query={}`



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# File 'lib/queries/query/filter.rb', line 309

def self.instatiated_base_filter(params)
  if s = base_filter(params)
    s.new(params[base_query_name(params)])
  else
    nil
  end
end

.inverted_subqueries ⇒ Hash

Returns only referenced in specs.

Returns:

  • (Hash) —

    only referenced in specs



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# File 'lib/queries/query/filter.rb', line 73

def self.inverted_subqueries
  r = {}
  SUBQUERIES.each do |k,v|
    v.each do |m|
      if r[m]
        r[m].push k
      else
        r[m] = [k]
      end
    end
  end
  r
end

.params ⇒ Object

Returns Array merges ‘[:a, []]` into [:a].

Returns:

  • Array merges ‘[:a, []]` into [:a]



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# File 'lib/queries/query/filter.rb', line 347

def self.params
  a = self::PARAMS.dup
  b = a.pop.keys
  (a + b).uniq
end

.query_name ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 63

def self.query_name
  base_name + '_query'
end

Instance Method Details

#all(nil_empty = false) ⇒ ActiveRecord::Relation

See /lib/queries/ARCHITECTURE.md for additional explanation.

Parameters:

  • nil_empty (Boolean) (defaults to: false) —

    If true then if there are no clauses return nil not .all

Returns:

  • (ActiveRecord::Relation) 


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# File 'lib/queries/query/filter.rb', line 671

def all(nil_empty = false)

  # TODO: should turn off/on project_id here on nil empty?

  a = all_and_clauses
  b = all_merge_clauses

  return nil if nil_empty && a.nil? && b.nil?

  # !! Do not apply `.distinct here`

  q = nil
  if a && b
    q = b.where(a)
  elsif a
    q = referenced_klass.where(a)
  elsif b
    q = b
  else
    q = referenced_klass.all
  end

  if venn && !api
    q = apply_venn(q)
  end

  if recent
    q = referenced_klass.from(q.all, table.name).order(updated_at: :desc)
  end

  if paginate
    q = q.page(page).per(per)
  end

  q
end

#all_and_clauses ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


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# File 'lib/queries/query/filter.rb', line 617

def all_and_clauses
  clauses = and_clauses + annotator_and_clauses + shared_and_clauses
  clauses.compact!
  return nil if clauses.empty?

  a = clauses.shift
  clauses.each do |b|
    a = a.and(b)
  end
  a
end

#all_merge_clauses ⇒ Scope?

Of interest, the previous native ‘merge()` (and `and()“) make things complicated:

For example a.merge(b) != b.merge(a) in some cases. This is because certain clauses are tossed without warning (notably ‘.from()`). See:

We presently use SQL with INTERSECTION to combine facets.

Returns:

  • (Scope, nil) 


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# File 'lib/queries/query/filter.rb', line 645

def all_merge_clauses
  clauses = merge_clauses + annotator_merge_clauses
  clauses.compact!

  return nil if clauses.empty?
  referenced_klass_intersection(clauses)
end

#and_clauses ⇒ Object

Defined in inheriting classes



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# File 'lib/queries/query/filter.rb', line 612

def and_clauses
  []
end

#annotator_and_clauses ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 589

def annotator_and_clauses
  a = []
  self.class.included_annotator_facets.each do |c|
    if c.respond_to?(:and_clauses)
      c.and_clauses.each do |f|
        if v = send(f)
          a.push v
        end
      end
    end
  end
  a
end

#annotator_merge_clauses ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 570

def annotator_merge_clauses
  a = []

  # !! Interesting `.compact` removes #<ActiveRecord::Relation []>,
  # so patterns that us collect.flatten.compact return empty,
  #  `.present?` fails as well, so verbose loops here
  self.class.included_annotator_facets.each do |c|
    if c.respond_to?(:merge_clauses)
      next if c.name == 'Queries::Concerns::Identifiers' && no_identifier_clauses
      c.merge_clauses.each do |f|
        if v = send(f)
          a.push v
        end
      end
    end
  end
  a
end

#apply_venn(query) ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 653

def apply_venn(query)
  Queries.venn(query, venn_query.all, venn_mode)
end

#attribute_exact_facet(attribute = nil) ⇒ Object

params attribute [Symbol]

 a facet for use when params include `author`, and `exact_author` pattern combinations
 See queries/source/filter.rb for example use
 See /spec/lib/queries/source/filter_spec.rb
!! Whitespace (e.g. tabs, newlines) is ignored when exact is used !!!



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# File 'lib/queries/query/filter.rb', line 551

def attribute_exact_facet(attribute = nil)
  a = attribute.to_sym
  return nil if send(a).blank?
  if send("exact_#{a}".to_sym)

    # TODO: Think we need to handle ' and '

    v = send(a)
    v.gsub!(/\s+/, ' ')
    v = ::Regexp.escape(v)
    v.gsub!(/\\\s+/, '\s*') # spaces are escaped, but we need to expand them in case we dont' get them caught
    v = '^\s*' + v + '\s*$'

    table[a].matches_regexp(v)
  else
    table[a].matches('%' + send(a).strip.gsub(/\s+/, '%') + '%')
  end
end

#deep_permit(params) ⇒ Object

Returns ActionController::Parameters.

Returns:

  • ActionController::Parameters



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# File 'lib/queries/query/filter.rb', line 491

def deep_permit(params)
  p = params.permit( permitted_params(params.to_unsafe_hash))
end

#merge_clauses ⇒ Object

Defined in inheriting classes



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# File 'lib/queries/query/filter.rb', line 630

def merge_clauses
  []
end

#model_id_facet ⇒ Object

Returns id= facet, automatically added to all queries. Over-ridden in some base classes.



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# File 'lib/queries/query/filter.rb', line 522

def model_id_facet
  m = (base_name + '_id').to_sym
  return nil if send(m).empty?
  table[:id].in(send(m))
end

#object_global_id_facet ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 533

def object_global_id_facet
  return nil if object_global_id.empty?
  ids = []
  object_global_id.each do |i|
    g = GlobalID.parse(i)
    # If any global_ids do not reference this Class, abort
    return nil unless g.model_class.base_class.name == referenced_klass.name
    ids.push g.model_id
  end

  table[:id].in(ids)
end

#permitted_params(hsh) ⇒ Object

This method is a preprocessor that discovers, by finding the nested subqueries, which params should be permitted. It is used to build a permitable profile of parameters.

That profile is then used in the actual .permit() call.

An alternate solution, first tried, is to permit the params directly during inspection for subqueries. This also would work, however there are some nice benefits to having a profile of the allowed params available as an Array, for example we can use it for API documentation a little easier(?!).

In essence what we needed was for ActionController::Parameters to be able to accumulate (remember) all permitted params (not just their actual data) over multiple .permit() calls. If we had that, then we could do something like params.permitted_params => Array after multiple calls like params.permit(:a), params.permit(:b).

any parameter set for the query.

Returns:

  • Array like [:a,:b, :c, []]



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# File 'lib/queries/query/filter.rb', line 416

def permitted_params(hsh)
  h = self.class::PARAMS.deep_dup
  h.unshift(:per)
  h.unshift(:page)
  h.unshift(:paginate)

  if !h.last.kind_of?(Hash)
    h << {}
  end

  c = h.last # a {}

  if n = self.class.annotator_params
    c.merge!(n.pop)
    h = n + h
  end

  b = subquery_vector(hsh)

  parent = self.class

  while !b.empty?
    a = b.shift

    next unless SUBQUERIES[parent.base_name.to_sym].include?( a.to_s.gsub('_query', '').to_sym )

    q = FILTER_QUERIES[a].safe_constantize
    p = q::PARAMS.deep_dup

    p.unshift(:per)
    p.unshift(:page)
    p.unshift(:paginate)

    if !p.last.kind_of?(Hash)
      p << {}
    end

    if n = q.annotator_params
      p.last.merge!(n.pop)
      p = n + p
    end

    c[a] = p

    c = p.last

    parent = q
  end

  if api
    self.class.api_excluded_params.each do |a|
      h.delete_if{|k,v| a == k}
      h.last.delete_if{|k,v| a == k }
    end
  end

  h
end

#process_url_into_params(url) ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 233

def process_url_into_params(url)
  Rack::Utils.parse_nested_query(url)
end

#project_id_facet ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 528

def project_id_facet
  return nil if project_id.empty?
  table[:project_id].in(project_id)
end

#query_name ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 67

def query_name
  self.class.query_name
end

#set_nested_queries(params) ⇒ Object

TODO: when a nesting problem is found we need to flag the query as invalid

Returns:

  • True



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# File 'lib/queries/query/filter.rb', line 499

def set_nested_queries(params)

  if n = params.select{|k, p| k.to_s =~ /_query/ }
    return nil if n.keys.count != 1 # !!! can't have multiple nested queries inside one level !!! This lets us eliminate infinite loops at the cost of expressiveness?!

    query_name = n.first.first

    return nil unless SUBQUERIES[base_name.to_sym].include?( query_name.to_s.gsub('_query', '').to_sym ) # must be registered

    query_params = n.first.last

    q = FILTER_QUERIES[query_name].safe_constantize.new(query_params)

    # assign to @<model>_query
    v = send("#{query_name}=".to_sym, q)
  end

  true
end

#shared_and_clauses ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 603

def shared_and_clauses
  [
    project_id_facet,
    model_id_facet,
    object_global_id_facet,
  ]
end

#subquery_vector(hsh) ⇒ Array of Symbol

Since queries nest linearly we don’t need to recursion.

Returns:

  • (Array of Symbol) —

    all queries, in nested order



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# File 'lib/queries/query/filter.rb', line 479

def subquery_vector(hsh)
  result = []
  while !hsh.keys.select{|k| k =~ /_query/}.empty?
    a = hsh.keys.select{|k| k =~ /_query/}
    result += a
    hsh = hsh[a.first]
  end
  result.map(&:to_sym)
end

#venn_query ⇒ Object 



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# File 'lib/queries/query/filter.rb', line 657

def venn_query
  u = ::Addressable::URI.parse(venn)
  p = ::Rack::Utils.parse_query(u.query)

  a = ActionController::Parameters.new(p)

  self.class.new(a)
end