Class: Perron::DataSource

Inherits:
SimpleDelegator
  • Object
show all
Includes:
Enumerable, ClassMethods
Defined in:
lib/perron/data_source.rb,
lib/perron/data_source/item.rb,
lib/perron/data_source/proxy.rb,
lib/perron/data_source/class_methods.rb,
lib/perron/data_source/helper_context.rb

Defined Under Namespace

Modules: ClassMethods Classes: Proxy

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier) ⇒ DataSource

Returns a new instance of DataSource.



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# File 'lib/perron/data_source.rb', line 15

def initialize(identifier)
  @identifier = identifier
  @file_path = self.class.path_for!(identifier)
  @records = records

  super(records)
end

Class Method Details

.all ⇒ Object 



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# File 'lib/perron/data_source.rb', line 23

def self.all
  identifier = name.to_s.split("::").drop(2).map { it.underscore }.join("/")
  identifier = name.demodulize.underscore if identifier.empty?

  return cached(identifier) if Perron.configuration.cache_data_sources

  new(identifier)
end

.cached(identifier) ⇒ Object 



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# File 'lib/perron/data_source.rb', line 32

def self.cached(identifier)
  @_data_sources ||= {}
  @_data_sources[identifier] ||= new(identifier)
end

Instance Method Details

#[](index) ⇒ Object 



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# File 'lib/perron/data_source.rb', line 47

def [](index) = @records[index]

#count ⇒ Object 



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# File 'lib/perron/data_source.rb', line 39

def count = @records.count

#each(&block) ⇒ Object 



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# File 'lib/perron/data_source.rb', line 37

def each(&block) = @records.each(&block)

#first(n = nil) ⇒ Object 



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# File 'lib/perron/data_source.rb', line 41

def first(n = nil)
  n ? @records.first(n) : @records.first
end

#last ⇒ Object 



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# File 'lib/perron/data_source.rb', line 45

def last = @records.last

#size ⇒ Object Also known as: length 



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# File 'lib/perron/data_source.rb', line 49

def size = @records.size