Class: FMCache::Decoder::FieldsChecker

Inherits:
Object
  • Object
show all
Defined in:
lib/fmcache/decoder/fields_checker.rb

Defined Under Namespace

Classes: CheckResult

Instance Method Summary collapse

Instance Method Details

#check(list, field_mask) ⇒ CheckResult 



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/fmcache/decoder/fields_checker.rb', line 17

def check(list, field_mask)
  l              = []
  incomplete_l   = []
  missing_fields = Set.new

  list.each do |d|
    _, m_fields = check_fields(d, field_mask)
    if m_fields.size == 0
      l << d
    else
      incomplete_l << d
      missing_fields |= m_fields
    end
  end

  CheckResult.new(
    list:            l,
    incomplete_list: incomplete_l,
    missing_fields:  missing_fields,
  )
end

#check_fields(data, field_mask, prefix = []) ⇒ Object 



41
42
43
44
45
46
47
48
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
75
 
# File 'lib/fmcache/decoder/fields_checker.rb', line 41

def check_fields(data, field_mask, prefix = [])
  fields         = []
  missing_fields = []

  id_exists = false
  field_mask.attrs.each do |attr|
    f = Field.to_s(prefix: prefix, attr: attr)
    if data.fetch(f)
      fields << f
      id_exists = true if attr == :id
    else  # NOTE: When nil, cache of the field does not exist
      missing_fields << f
    end
  end

  if id_exists
    field_mask.assocs.each do |assoc|
      f, m_f = check_fields(data, assoc, (prefix + [assoc.name]))
      fields         += f
      missing_fields += m_f
    end
  else
    # NOTE: When the cache of id does not exist, treat current and lower
    # layer as missing fields
    # TODO(south37) Improve performance
    missing_fields += fields
    fields         = []

    field_mask.assocs.each do |assoc|
      missing_fields += Helper.to_fields(assoc, prefix: prefix + [assoc.name])
    end
  end

  [fields, missing_fields]
end