Module: Safrano::XJSON

Defined in:
lib/odata/request/json.rb

Overview

This is used from the Test-suite code ! it does recursive / deep symbolize additionally to inbound casting

Class Method Summary collapse

Class Method Details

.cast_values_in(resd) ⇒ Object

symbolise keys and cast/parse values back to the proper ruby type; proper type meaning the one that Sequel chooses when loading data from the DB apply recursively to nested navigation attributes sub-structures



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# File 'lib/odata/request/json.rb', line 50

def self.cast_values_in(resd)
  resd.symbolize_keys!

  if (defered = resd[:__deferred])
    defered.symbolize_keys!
  elsif (meta = resd[:__metadata])
    meta.symbolize_keys!

    # type is normally namespaced !  --> split.last is the class
    typ = get_class_from_meta(meta)

    typ.db_schema.each do |f, props|
      metadata = typ.cols_metadata[f]
      case props[:type]
      when :datetime
        #              resd[f] = Time.parse(resd[f]) if resd[f]
        #              resd[f] = DateTime.strptime(resd[f], '/Date(%Q)').to_time if resd[f]
        resd[f] = Sequel.datetime_class.from_edm_json(resd[f]) if resd[f]
      when :decimal
        resd[f] = BigDecimal(resd[f])
      when :float
        resd[f] = Float(resd[f])
      else
        # TODO: better typ-system
        # Currently Sequel loads Numeric(x,y) as Float
        resd[f] = Float(resd[f]) if metadata[:edm_type] =~ /\A\s*Edm.Decimal/
      end
    end

    if typ.nav_entity_attribs
      typ.nav_entity_attribs.each_key do |nattr|
        cast_values_in(resd[nattr.to_sym]) if resd[nattr.to_sym]
      end
    end

    if typ.nav_collection_attribs
      typ.nav_collection_attribs.each_key do |ncattr|
        if (resd_attr = resd[ncattr.to_sym])
          if (defered = resd_attr['__deferred'])
            defered.symbolize_keys! if defered
          else
            resd_attr.symbolize_keys! #  'results' --> :results
            resd_attr[:results].each { |enty| cast_values_in(enty) }
          end
        end
      end
    end
  end
  resd
end

.get_class_from_meta(meta) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 42

def self.get_class_from_meta(meta)
  # type is normally namespaced !  --> split.last is the class
  meta[:type].split('.').last.constantize
end

.parse_coll(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 151

def self.parse_coll(*args)
  resh = ::JSON.parse(*args)

  resh['d']['results'].map! { |currd| cast_values_in(currd) }

  resh['d']
end

.parse_coll_nocast(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 167

def self.parse_coll_nocast(*args)
  resh = ::JSON.parse(*args)

  resh['d']['results'].map! { |currd| symbolize_attribs_in(currd) }

  resh['d']
end

.parse_one(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 138

def self.parse_one(*args)
  resh = ::JSON.parse(*args)
  cast_values_in(resh['d'])
end

.parse_one_nocast(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 133

def self.parse_one_nocast(*args)
  resh = ::JSON.parse(*args)
  symbolize_attribs_in(resh['d'])
end

.symbolize_attribs_in(resd) ⇒ Object

symbolise attrib names (h-keys) apply recursively to nested navigation attributes sub-structures



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# File 'lib/odata/request/json.rb', line 103

def self.symbolize_attribs_in(resd)
  resd.symbolize_keys!

  if (defered = resd[:__deferred])
    defered.symbolize_keys!
  elsif (meta = resd[:__metadata])
    meta.symbolize_keys!

    typ = get_class_from_meta(meta)

    if typ.nav_entity_attribs
      typ.nav_entity_attribs.each_key do |nattr|
        symbolize_attribs_in(resd[nattr.to_sym])
      end
    end

    if typ.nav_collection_attribs
      typ.nav_collection_attribs.each_key do |ncattr|
        if (defered = resd[ncattr.to_sym]['__deferred'])
          defered.symbolize_keys!
        else
          resd[ncattr.to_sym].each { |enty| symbolize_attribs_in(enty) }
        end
      end
    end

  end
  resd
end

.v1_parse_coll(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 143

def self.v1_parse_coll(*args)
  resh = ::JSON.parse(*args)

  resh['d'].map! { |currd| cast_values_in(currd) }

  resh['d']
end

.v1_parse_coll_nocast(*args) ⇒ Object 



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# File 'lib/odata/request/json.rb', line 159

def self.v1_parse_coll_nocast(*args)
  resh = ::JSON.parse(*args)

  resh['d'].map! { |currd| symbolize_attribs_in(currd) }

  resh['d']
end