Class: JSON::Schema::RefAttribute

Inherits:
Attribute
  • Object
show all
Defined in:
lib/json-schema/attributes/ref.rb

Constant Summary

Constants inherited from Attribute

Attribute::TYPE_CLASS_MAPPINGS

Class Method Summary collapse

Methods inherited from Attribute

build_fragment, data_valid_for_type?, validation_error, validation_errors

Class Method Details

.get_referenced_uri_and_schema(s, current_schema, validator) ⇒ Object


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# File 'lib/json-schema/attributes/ref.rb', line 21

def self.get_referenced_uri_and_schema(s, current_schema, validator)
  uri,schema = nil,nil

  temp_uri = Addressable::URI.parse(s['$ref'])
  if temp_uri.relative?
    temp_uri = current_schema.uri.clone
    # Check for absolute path
    path = s['$ref'].split("#")[0]
    if path.nil? || path == ''
      temp_uri.path = current_schema.uri.path
    elsif path[0,1] == "/"
      temp_uri.path = Pathname.new(path).cleanpath.to_s
    else
      temp_uri = current_schema.uri.join(path)
    end
    temp_uri.fragment = s['$ref'].split("#")[1]
  end
  temp_uri.fragment = "" if temp_uri.fragment.nil?

  # Grab the parent schema from the schema list
  schema_key = temp_uri.to_s.split("#")[0] + "#"

  ref_schema = JSON::Validator.schema_for_uri(schema_key)

  if ref_schema
    # Perform fragment resolution to retrieve the appropriate level for the schema
    target_schema = ref_schema.schema
    fragments = temp_uri.fragment.split("/")
    fragment_path = ''
    fragments.each do |fragment|
      if fragment && fragment != ''
        fragment = Addressable::URI.unescape(fragment.gsub('~0', '~').gsub('~1', '/'))
        if target_schema.is_a?(Array)
          target_schema = target_schema[fragment.to_i]
        else
          target_schema = target_schema[fragment]
        end
        fragment_path = fragment_path + "/#{fragment}"
        if target_schema.nil?
          raise SchemaError.new("The fragment '#{fragment_path}' does not exist on schema #{ref_schema.uri.to_s}")
        end
      end
    end

    # We have the schema finally, build it and validate!
    uri = temp_uri
    schema = JSON::Schema.new(target_schema,temp_uri,validator)
  end

  [uri,schema]
end

.validate(current_schema, data, fragments, processor, validator, options = {}) ⇒ Object


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# File 'lib/json-schema/attributes/ref.rb', line 7

def self.validate(current_schema, data, fragments, processor, validator, options = {})
  uri,schema = get_referenced_uri_and_schema(current_schema.schema, current_schema, validator)

  if schema
    schema.validate(data, fragments, processor, options)
  elsif uri
    message = "The referenced schema '#{uri.to_s}' cannot be found"
    validation_error(processor, message, fragments, current_schema, self, options[:record_errors])
  else
    message = "The property '#{build_fragment(fragments)}' was not a valid schema"
    validation_error(processor, message, fragments, current_schema, self, options[:record_errors])
  end
end