Class: PRRD::Entity

Inherits:

Object

• Object
• PRRD::Entity

Defined in:

lib/prrd.rb

Overview

Entity base class

Direct Known Subclasses

Database::Archive, Database::Datasource, Graph::Area, Graph::Color, Graph::Comment, Graph::Definition, Graph::Hrule, Graph::Line, Graph::Print, Graph::Shift, Graph::Textalign, Graph::Vrule

Instance Attribute Summary

• #data ⇒ Object

  Accessors.

• #keys ⇒ Object

  Accessors.

Instance Method Summary

• #initialize(values = nil) ⇒ Entity constructor

  Constructor.

• #method_missing(m, *args, &block) ⇒ Boolean

  Method missing.

• #validate_presence(*keys) ⇒ Object

  Validate presence of keys in data collection.

Constructor Details

#initialize(values = nil) ⇒ Entity

Constructor

# File 'lib/prrd.rb', line 135

def initialize(values = nil)
  @data = {}

  unless values.nil?
    values.each do |k, v|
      next unless @keys.include? k
      send "#{k}=".to_sym, v
    end
  end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(m, *args, &block) ⇒ Boolean

Method missing

Parameters:

• m (Symbol)
• args (Array)
• block (Proc)

Returns:

• (Boolean)

# File 'lib/prrd.rb', line 159

def method_missing(m, *args, &block)
  ms = m.to_s
  if ms.include? '='
    ms = ms[0..-2]
    if @keys.include? ms.to_sym
      @data[ms.to_sym] = args[0]
      return true
    end
  end

  super
end

Instance Attribute Details

#data ⇒ Object

Accessors

# File 'lib/prrd.rb', line 132

def data
  @data
end

#keys ⇒ Object

Accessors

# File 'lib/prrd.rb', line 132

def keys
  @keys
end

Instance Method Details

#validate_presence(*keys) ⇒ Object

Validate presence of keys in data collection

Parameters:

• keys (Array)

# File 'lib/prrd.rb', line 148

def validate_presence(*keys)
  keys.each do |k|
    fail 'Define a "%s" option' % k if !@data.key?(k) || @data[k].nil?
  end
end