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?, type_of_data, 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 22

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

  temp_uri = JSON::Util::URI.normalize_ref(s['$ref'], current_schema.uri)

  # 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 = JSON::Util::URI.parse(JSON::Util::URI.unescape_uri(temp_uri)).fragment.split("/")
    fragment_path = ''
    fragments.each do |fragment|
      if fragment && fragment != ''
        fragment = 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 8

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