Module: LazyGraph

Defined in:
lib/lazy_graph.rb,
lib/lazy_graph/cli.rb,
lib/lazy_graph/node.rb,
lib/lazy_graph/graph.rb,
lib/lazy_graph/logger.rb,
lib/lazy_graph/builder.rb,
lib/lazy_graph/context.rb,
lib/lazy_graph/version.rb,
lib/lazy_graph/rack_app.rb,
lib/lazy_graph/hash_utils.rb,
lib/lazy_graph/builder/dsl.rb,
lib/lazy_graph/environment.rb,
lib/lazy_graph/path_parser.rb,
lib/lazy_graph/rack_server.rb,
lib/lazy_graph/builder_group.rb,
lib/lazy_graph/missing_value.rb,
lib/lazy_graph/stack_pointer.rb,
lib/lazy_graph/node/array_node.rb,
lib/lazy_graph/node/object_node.rb,
lib/lazy_graph/node/symbol_hash.rb,
lib/lazy_graph/path_parser/path.rb,
lib/lazy_graph/node/derived_rules.rb,
lib/lazy_graph/node/node_properties.rb,
lib/lazy_graph/path_parser/path_part.rb,
lib/lazy_graph/path_parser/path_group.rb

Overview

LazyGraph supports a bespoke path structure for querying a LazyGraph. It has some overlap with

  • JSON path (but supports querying a subset of object properties), and

  • GraphQL (but it supports direct references to deeply nested properties without preserving structure)/

Example query paths and outputs

“employees” => [{…whole object…, object…]} “employees” => [{ “id”: “3”, “name”: “John Smith, { ”id“: ”4“, ”name“: ”Jane Smith}]} “employees => [{…whole object…, object…]}” “employees => [{…whole object…, object…]}”

Defined Under Namespace

Modules: Environment, HashUtils, Logger, NodeProperties, PathParser Classes: AbortError, ArrayNode, Builder, BuilderGroup, CLI, Context, Graph, MissingValue, Node, ObjectNode, RackApp, RackServer, StackPointer, ValidationError

Constant Summary collapse

DIGIT_REGEXP = 
/^-?\d+$/
SAFE_TOKEN_REGEXP = 
/^[A-Za-z][A-Za-z0-9]*$/
PROPERTY_CLASSES = 
{}
UNIQUE_NAME_COUNTER = 
Hash.new(0)
VALIDATION_CACHE =

Represents a lazy graph structure based on JSON schema

{}.compare_by_identity
METASCHEMA = 
JSON.load_file(File.join(__dir__, 'lazy-graph.json'))
VERSION = 
'0.2.0'
POINTER_POOL =

Module to provide lazy graph functionalities using stack pointers.

[]

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/lazy_graph/logger.rb', line 6

def logger
  @logger
end

Class Method Details

.fetch_property_class(name, members, namespace: nil) ⇒ Object 



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# File 'lib/lazy_graph/node.rb', line 17

def self.fetch_property_class(name, members, namespace: nil)
  namespace ||= LazyGraph
  PROPERTY_CLASSES[members] ||= begin
    name = name.to_s.capitalize.gsub(/(\.|_)([a-zA-Z])/) do |m|
      m[1].upcase
    end.gsub(/[^a-zA-Z]/, '').then { |n| n.length > 0 ? n : 'NodeProps' }
    index = UNIQUE_NAME_COUNTER[[name, namespace]] += 1
    full_name = "#{name}#{index > 1 ? index : ''}"
    namespace.const_set(full_name, NodeProperties.build(**members))
  end
end