Class: JsonSchema::Schema

Inherits:
Object
  • Object
show all
Defined in:
lib/json_schema/schema.rb

Defined Under Namespace

Classes: Link, Media

Constant Summary collapse

@@copyable = 
[]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Schema

Returns a new instance of Schema.



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# File 'lib/json_schema/schema.rb', line 18

def initialize
  @clones = Set.new
end

Instance Attribute Details

#fragment ⇒ Object

Fragment of a JSON Pointer that can help us build a pointer back to this schema for debugging.



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# File 'lib/json_schema/schema.rb', line 24

def fragment
  @fragment
end

#reference ⇒ Object

Rather than a normal schema, the node may be a JSON Reference. In this case, no other attributes will be filled in except for #parent.



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# File 'lib/json_schema/schema.rb', line 28

def reference
  @reference
end

Class Method Details

.attr_copyable(attr) ⇒ Object

identical to attr_accessible, but allows us to copy in values from a target schema to help preserve our hierarchy during reference expansion



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# File 'lib/json_schema/schema.rb', line 9

def self.attr_copyable(attr)
  attr_accessor(attr)
  @@copyable << "@#{attr}".to_sym
end

.attr_reader_default(attr, default) ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 14

def self.attr_reader_default(attr, default)
  class_eval("def #{attr} ; !@#{attr}.nil? ? @#{attr} : #{default} ; end")
end

Instance Method Details

#copy_from(schema) ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 195

def copy_from(schema)
  @@copyable.each do |copyable|
    instance_variable_set(copyable, schema.instance_variable_get(copyable))
  end
end

#expand_references ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 201

def expand_references
  expander = ReferenceExpander.new
  if expander.expand(self)
    [true, nil]
  else
    [false, expander.errors]
  end
end

#expand_references! ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 210

def expand_references!
  ReferenceExpander.new.expand!(self)
  true
end

#inspect ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 215

def inspect
  str = inspect_schema
  str = JSON.pretty_generate(str).gsub(/\\?"/, '') if str.is_a?(Hash)
  "\#<JsonSchema::Schema #{str}>"
end

#inspect_schema ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 221

def inspect_schema
  if reference
    str = reference.to_s
    str += " [EXPANDED]" if expanded?
    str += " [CLONE]" if !original?
    str
  else
    hash = {}
    @@copyable.each do |copyable|
      next if [:@clones, :@data, :@parent, :@uri].include?(copyable)
      if value = instance_variable_get(copyable)
        if value.is_a?(Array)
          if !value.empty?
            hash[copyable] = value.map { |v| inspect_value(v) }
          end
        elsif value.is_a?(Hash)
          if !value.empty?
            hash[copyable] =
              Hash[*value.map { |k, v| [k, inspect_value(v)] }.flatten]
          end
        else
          hash[copyable] = inspect_value(value)
        end
      end
    end
    hash
  end
end

#inspect_value(value) ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 250

def inspect_value(value)
  if value.is_a?(Schema)
    value.inspect_schema
  else
    value.inspect
  end
end

#original? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/json_schema/schema.rb', line 258

def original?
  !clones.include?(self)
end

#pointer ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 262

def pointer
  if parent
    parent.pointer + "/" + fragment
  else
    fragment
  end
end

#validate(data) ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 270

def validate(data)
  validator = Validator.new(self)
  valid = validator.validate(data)
  [valid, validator.errors]
end

#validate!(data) ⇒ Object 



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# File 'lib/json_schema/schema.rb', line 276

def validate!(data)
  Validator.new(self).validate!(data)
end