Class: Scrooge::Optimizations::Columns::ScroogedAttributes

Inherits:
Hash
  • Object
show all
Defined in:
lib/optimizations/columns/attributes_proxy.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#callsite_signature ⇒ Object

Hash container for attributes with scrooge monitoring of attribute access



34
35
36
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 34

def callsite_signature
  @callsite_signature
end

#fully_fetched ⇒ Object

Hash container for attributes with scrooge monitoring of attribute access



34
35
36
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 34

def fully_fetched
  @fully_fetched
end

#klass ⇒ Object

Hash container for attributes with scrooge monitoring of attribute access



34
35
36
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 34

def klass
  @klass
end

#scrooge_columns ⇒ Object

Hash container for attributes with scrooge monitoring of attribute access



34
35
36
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 34

def scrooge_columns
  @scrooge_columns
end

#updateable_result_set ⇒ Object

Hash container for attributes with scrooge monitoring of attribute access



34
35
36
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 34

def updateable_result_set
  @updateable_result_set
end

Class Method Details

.setup(record, scrooge_columns, klass, callsite_signature, updateable_result_set) ⇒ Object 



36
37
38
39
40
41
42
43
44
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 36

def self.setup(record, scrooge_columns, klass, callsite_signature, updateable_result_set)
  hash = new.replace(record)
  hash.scrooge_columns = scrooge_columns.dup
  hash.fully_fetched = false
  hash.klass = klass
  hash.callsite_signature = callsite_signature
  hash.updateable_result_set = updateable_result_set
  hash
end

Instance Method Details

#[](attr_name) ⇒ Object

Lazily augment and load missing attributes



64
65
66
67
68
69
70
71
72
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 64

def [](attr_name)
  attr_s = attr_name.to_s
  if interesting_for_scrooge?( attr_s )
    augment_callsite!( attr_s )
    fetch_remaining
    @scrooge_columns << attr_s
  end
  super
end

#[]=(attr_name, value) ⇒ Object Also known as: store 



79
80
81
82
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 79

def []=(attr_name, value)
  @scrooge_columns << attr_name.to_s
  super
end

#delete(attr_name) ⇒ Object 



100
101
102
103
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 100

def delete(attr_name)
  self[attr_name]
  super
end

#dup ⇒ Object 



86
87
88
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 86

def dup
  super.dup_self
end

#fetch(*args, &block) ⇒ Object 



74
75
76
77
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 74

def fetch(*args, &block)
  self[args[0]]
  super
end

#fetch_remaining ⇒ Object 



112
113
114
115
116
117
118
119
120
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 112

def fetch_remaining
  unless @fully_fetched
    columns_to_fetch = @klass.column_names - @scrooge_columns.to_a
    unless columns_to_fetch.empty?
      fetch_remaining!( columns_to_fetch )
    end
    @fully_fetched = true
  end
end

#has_key?(attr_name) ⇒ Boolean Also known as: include?, key?, member?

Let #has_key? consider defined columns

Returns:

  • (Boolean) 


54
55
56
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 54

def has_key?(attr_name)
  keys.include?(attr_name.to_s)
end

#keys ⇒ Object

Delegate Hash keys to all defined columns



48
49
50
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 48

def keys
  @klass.column_names
end

#to_a ⇒ Object 



95
96
97
98
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 95

def to_a
  fetch_remaining
  super
end

#to_hash ⇒ Object 



90
91
92
93
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 90

def to_hash
  fetch_remaining
  super
end

#update(hash) ⇒ Object Also known as: merge! 



105
106
107
108
 
# File 'lib/optimizations/columns/attributes_proxy.rb', line 105

def update(hash)
  @fully_fetched = true
  super(hash.to_hash)
end