Module: Safrano::ExpandHandler

Included in:
ServiceBase
Defined in:
lib/safrano/service.rb

Constant Summary collapse

PATH_SPLITTER = 
%r{\A(\w+)/?(.*)\z}.freeze
DEFERRED = 
'__deferred'
URI = 
'uri'
RESULTS_K =

default v2 overriden in ServiceV1

'results'
COUNT_K = 
'__count'

Instance Method Summary collapse

Instance Method Details

#get_coll_odata_h(array:, template:, icount: nil) ⇒ Object 



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# File 'lib/safrano/service.rb', line 34

def get_coll_odata_h(array:, template:, icount: nil)
  array.map! do |w|
    get_entity_odata_h(entity: w, template: template)
  end
  icount ? { RESULTS_K => array, COUNT_K => icount } : { RESULTS_K => array }
end

#get_deferred_odata_h(entity_uri:, attrib:) ⇒ Object 



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# File 'lib/safrano/service.rb', line 26

def get_deferred_odata_h(entity_uri:, attrib:)
  { DEFERRED => { URI => "#{entity_uri}/#{attrib}" } }
end

#get_entity_odata_h(entity:, template:) ⇒ Object 



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# File 'lib/safrano/service.rb', line 47

def get_entity_odata_h(entity:, template:)
  hres = {}
  # finalise the template according to options
  # (eg. skip metadata and or deferred...)
  @final_template_func.call(template)

  template.each do |elmt, arg|
    case elmt
    when :meta
      hres[METADATA_K] = entity.metadata_h

    when :all_values
      hres.merge! entity.casted_values

    when :selected_vals
      hres.merge! entity.casted_values(arg)

    when :expand_e

      arg.each do |attr, templ|
        enval = entity.send(attr)
        hres[attr] = if enval
                       get_entity_odata_h(entity: enval, template: templ)
                     else
                       # FK is NULL --> nav_value is nil --> return empty json
                       EMPTYH
                     end
      end

    when :expand_c
      arg.each do |attr, templ|
        next unless  (encoll = entity.send(attr))

        #  nav attributes that are a collection (x..n)
        hres[attr] = get_coll_odata_h(array: encoll, template: templ)
        # else error ?
      end

    when :deferr
      euri = entity.uri
      arg.each do |attr|
        hres[attr] = get_deferred_odata_h(entity_uri: euri, attrib: attr)
      end
    end
  end
  hres
end

#get_entity_odata_link_h(entity:) ⇒ Object

handle $links … Note: $expand seems to be ignored when $links are requested



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# File 'lib/safrano/service.rb', line 43

def get_entity_odata_link_h(entity:)
  { uri: entity.uri }
end