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Contents
require 'active_support/concern'
module Camunda
# The VariableSerialization module adds information to variables so Camunda can parse them. It adds types annotations and
# serializes hashes and array to JSON. Camunda engine cannot search on snake_case variables so it changes variable names
# to camelCase.
# @see Camunda::ProcessDefinition
module VariableSerialization
extend ActiveSupport::Concern
# Wrapper for class level method
def serialize_variables(variables)
self.class.serialize_variables(variables)
end
class_methods do
# rubocop:disable Metrics/MethodLength
# @param variables [Hash]
# @return {String,Symbol => {String,Symbol => Object}}
# @raise [ArgumentError] if a class instance is passed
def serialize_variables(variables)
hash = variables.transform_values do |value|
case value
when String
{ value: value, type: 'String' }
when Array, Hash
{ value: transform_json(value).to_json, type: 'Json' }
when TrueClass, FalseClass
{ value: value, type: 'Boolean' }
when Integer
{ value: value, type: 'Integer' }
when Float
{ value: value, type: 'Double' }
else
raise ArgumentError, "Not supporting complex types yet"
end
end
camelcase_keys(hash)
end
# rubocop:enable Metrics/MethodLength
# Transforms keys of a JSON like object (Array,Hash) from snake_case to CamelCase
# @param json [Array,Hash]
# @return [Hash] returns hash with camelCase keys
def transform_json(json)
if json.is_a?(Array)
json.map { |element| transform_json(element) }
elsif json.is_a?(Hash)
camelcase_keys(json)
else
json
end
end
def camelcase_keys(hash)
hash.deep_transform_keys { |key| key.to_s.camelcase(:lower) }
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems