Class: RelaxDB::ViewCreator

Inherits:
Object
  • Object
show all
Defined in:
lib/relaxdb/views.rb

Class Method Summary collapse

Class Method Details

.all(kls) ⇒ Object 



5
6
7
8
9
10
11
12
13
14
15
16
17
 
# File 'lib/relaxdb/views.rb', line 5

def self.all(kls)
  class_name = kls[0]
  map = "  function(doc) {        \n    var class_match = \#{kls_check kls}\n    if (class_match) {\n      emit(doc._id, doc);\n    }\n  }\n  QUERY\n        \n  View.new \"\#{class_name}_all\", map, sum_reduce_func      \nend\n"

.by_att_list(kls, *atts) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
 
# File 'lib/relaxdb/views.rb', line 19

def self.by_att_list(kls, *atts)
  class_name = kls[0]
  key = atts.map { |a| "doc.#{a}" }.join(", ")
  key = atts.size > 1 ? key.sub(/^/, "[").sub(/$/, "]") : key
  prop_check = atts.map { |a| "doc.#{a} !== undefined" }.join(" && ")

  map = "  function(doc) {\n    var class_match = \#{kls_check kls}\n    if(class_match && \#{prop_check}) {\n      emit(\#{key}, doc);\n    }\n  }\n  QUERY\n  \n  view_name = \"\#{class_name}_by_\" << atts.join(\"_and_\")\n  View.new view_name, map, sum_reduce_func\nend\n"

.has_n(client_class, relationship, target_class, relationship_to_client) ⇒ Object 



39
40
41
42
43
44
45
46
47
48
49
 
# File 'lib/relaxdb/views.rb', line 39

def self.has_n(client_class, relationship, target_class, relationship_to_client)
  map = "    function(doc) {\n      if(doc.relaxdb_class == \"\#{target_class}\" && doc.\#{relationship_to_client}_id)\n        emit(doc.\#{relationship_to_client}_id, doc);\n    }\n  QUERY\n  \n  view_name = \"\#{client_class}_\#{relationship}\"\n  View.new view_name, map\nend\n"

.kls_check(kls) ⇒ Object 



67
68
69
70
 
# File 'lib/relaxdb/views.rb', line 67

def self.kls_check kls
  kls_names = kls.map{ |k| %Q("#{k}") }.join(",")
  "[#{kls_names}].indexOf(doc.relaxdb_class) >= 0;"
end

.references_many(client_class, relationship, target_class, peers) ⇒ Object 



51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/relaxdb/views.rb', line 51

def self.references_many(client_class, relationship, target_class, peers)
  map = "    function(doc) {\n      if(doc.relaxdb_class == \"\#{target_class}\" && doc.\#{peers}) {\n        var i;\n        for(i = 0; i < doc.\#{peers}.length; i++) {\n          emit(doc.\#{peers}[i], doc);\n        }\n      }\n    }\n  QUERY\n  \n  view_name = \"\#{client_class}_\#{relationship}\"\n  View.new view_name, map\nend\n"

.sum_reduce_func ⇒ Object 



72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/relaxdb/views.rb', line 72

def self.sum_reduce_func
  "  function(keys, values, rereduce) {\n    if (rereduce) {\n      return sum(values);\n    } else {\n      return values.length;\n    }\n  }\n  QUERY\nend\n"