Module: Foobara::NestedTransactionable

Included in:
CommandConnector::Request, CommandPatternImplementation::Concerns::Transactions, TransactionGroup
Defined in:
foobara-0.3.0/projects/nested_transactionable/lib/foobara/nested_transactionable.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.relevant_entity_classes_for_type(type) ⇒ Object 



4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 4

def relevant_entity_classes_for_type(type)
  entity_classes = []
  entity_classes += Entity.construct_associations(type).values.map(&:target_class)

  if type.extends?(BuiltinTypes[:entity])
    entity_classes << type.target_class
  end

  entity_classes.uniq.each do |entity_class|
    entity_classes += entity_class.deep_associations.values.map(&:target_class)
  end

  entity_classes.uniq
end

.with_needed_transactions_for_type(type) ⇒ Object 



19
20
21
22
23
24
25
26
27
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 19

def with_needed_transactions_for_type(type, &)
  entity_classes = relevant_entity_classes_for_type(type)

  if entity_classes.empty?
    return yield
  end

  TransactionGroup.run(entity_classes:, &)
end

Instance Method Details

#auto_detect_current_transactions ⇒ Object 



49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 49

def auto_detect_current_transactions
  bases = nil

  if respond_to?(:relevant_entity_bases)
    bases = relevant_entity_bases

    unless bases.nil?
      return if bases.empty?
    end
  end

  unless bases
    classes = relevant_entity_classes
    return if classes.nil? || classes.empty?

    bases = classes.map(&:entity_base).uniq
  end

  bases.each do |base|
    tx = base.current_transaction

    if tx&.open?
      transactions << tx
    end
  end
end

#commit_transaction ⇒ Object 



126
127
128
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 126

def commit_transaction
  opened_transactions.reverse.each(&:commit!)
end

#commit_transaction_if_open ⇒ Object 



130
131
132
133
134
135
136
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 130

def commit_transaction_if_open
  opened_transactions.reverse.each do |tx|
    if tx.currently_open?
      tx.commit!
    end
  end
end

#open_transaction ⇒ Object 



76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 76

def open_transaction
  auto_detect_current_transactions

  bases_not_needing_transaction = transactions.map(&:entity_base)

  bases_needing_transaction = nil

  if respond_to?(:relevant_entity_bases)
    bases_needing_transaction = relevant_entity_bases

    unless bases_needing_transaction.nil?
      return if bases_needing_transaction.empty?
    end
  end

  unless bases_needing_transaction
    classes = relevant_entity_classes
    return if classes.nil? || classes.empty?

    bases_needing_transaction = relevant_entity_classes.map(&:entity_base).uniq - bases_not_needing_transaction
  end

  bases_needing_transaction = Persistence.sort_bases(bases_needing_transaction)

  bases_needing_transaction.each do |entity_base|
    transaction_mode = if respond_to?(:transaction_mode)
                         self.transaction_mode
                       end
    transaction = entity_base.transaction(transaction_mode)
    unless transaction.currently_open?
      transaction.open!
      @opened_transactions ||= []
      @opened_transactions << transaction
    end
    transactions << transaction
  end
end

#opened_transactions ⇒ Object 



44
45
46
47
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 44

def opened_transactions
  @opened_transactions ||= []
  Persistence.sort_transactions(@opened_transactions)
end

#relevant_entity_classes ⇒ Object 



34
35
36
37
38
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 34

def relevant_entity_classes
  # :nocov:
  raise "subclass responsibility"
  # :nocov:
end

#relevant_entity_classes_for_type(type) ⇒ Object 



30
31
32
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 30

def relevant_entity_classes_for_type(type)
  NestedTransactionable.relevant_entity_classes_for_type(type)
end

#rollback_transaction ⇒ Object 



114
115
116
117
118
119
120
121
122
123
124
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 114

def rollback_transaction
  opened_transactions.reverse.each do |transaction|
    if transaction.currently_open?
      # Hard to test this because halting and other exceptions rollback the transactions via
      # block form but to be safe keeping this
      # :nocov:
      transaction.rollback!
      # :nocov:
    end
  end
end

#transactions ⇒ Object 



40
41
42
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 40

def transactions
  @transactions ||= []
end

#use_transaction ⇒ Object 



138
139
140
 
# File 'projects/nested_transactionable/lib/foobara/nested_transactionable.rb', line 138

def use_transaction(&)
  Persistence::EntityBase.using_transactions(transactions, &)
end