Class: ArelExtensions::Nodes::Function

Inherits:
Arel::Nodes::Function show all
Includes:
Arel::Expressions, Arel::Math, Arel::OrderPredications, Predications
Defined in:
lib/arel_extensions/nodes/function.rb

Constant Summary collapse

RETURN_TYPE =

by default…

:string
MBSTRING =

Support multibyte string if they are available.

defined?(ActiveSupport::Multibyte::Chars) ? ActiveSupport::Multibyte::Chars : String

Instance Method Summary collapse

Methods included from Predications

#cast, #imatches, #in, #matches, #not_in, #when

Methods included from ArelExtensions::NullFunctions

#coalesce, #coalesce_blank, #if_present, #is_not_null, #is_null

Methods included from BooleanFunctions

#and, #or, #then, #⋀, #⋁

Methods included from StringFunctions

#&, #[], #ai_collate, #ai_imatches, #ai_matches, #blank, #byte_length, #char_length, #ci_collate, #collate, #concat, #downcase, #edit_distance, #group_concat, #idoes_not_match, #idoes_not_match_all, #idoes_not_match_any, #imatches, #imatches_all, #imatches_any, #length, #levenshtein_distance, #locate, #ltrim, #md5, #not_blank, #regexp_replace, #repeat, #replace, #rtrim, #smatches, #soundex, #substring, #trim, #upcase

Methods included from MathFunctions

#*, #/, #abs, #ceil, #floor, #format_number, #log10, #pow, #power, #round, #std, #sum, #variance

Methods included from DateDuration

#day, #format, #format_date, #hour, #minute, #month, #second, #wday, #week, #year

Methods included from Comparators

#!~, #<, #<=, #=~, #>, #>=

Methods included from Math

#+, #-

Methods included from Aliases

#xas

Instance Method Details

#!=(other) ⇒ Object 



47
48
49
 
# File 'lib/arel_extensions/nodes/function.rb', line 47

def !=(other)
  Arel::Nodes::NotEqual.new self, Arel.quoted(other, self)
end

#==(other) ⇒ Object 



43
44
45
 
# File 'lib/arel_extensions/nodes/function.rb', line 43

def ==(other)
  Arel::Nodes::Equality.new self, Arel.quoted(other, self)
end

#as(other) ⇒ Object 



23
24
25
26
27
28
29
 
# File 'lib/arel_extensions/nodes/function.rb', line 23

def as other
  res = Arel::Nodes::As.new(self.clone, Arel.sql(other))
  if Gem::Version.new(Arel::VERSION) >= Gem::Version.new('9.0.0')
    self.alias = Arel.sql(other)
  end
  res
end

#convert_to_date_node(object) ⇒ Object 



117
118
119
120
121
122
123
124
125
126
127
128
129
130
 
# File 'lib/arel_extensions/nodes/function.rb', line 117

def convert_to_date_node(object)
  case object
  when Arel::Attributes::Attribute, Arel::Nodes::Node
    object
  when DateTime, Time
    Arel.quoted(Date.new(object.year, object.month, object.day), self)
  when MBSTRING, String
    Arel.quoted(Date.parse(object.to_s), self)
  when Date
    Arel.quoted(object, self)
  else
    raise(ArgumentError, "#{object.class} cannot be converted to Date")
  end
end

#convert_to_datetime_node(object) ⇒ Object 



132
133
134
135
136
137
138
139
140
141
142
143
144
145
 
# File 'lib/arel_extensions/nodes/function.rb', line 132

def convert_to_datetime_node(object)
  case object
  when Arel::Attributes::Attribute, Arel::Nodes::Node
    object
  when DateTime, Time
    Arel.quoted(object, self)
  when MBSTRING, String
    Arel.quoted(Time.parse(object.to_s), self)
  when Date
    Arel.quoted(Time.utc(object.year, object.month, object.day, 0, 0, 0), self)
  else
    raise(ArgumentError, "#{object.class} cannot be converted to Datetime")
  end
end

#convert_to_node(object) ⇒ Object 



62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'lib/arel_extensions/nodes/function.rb', line 62

def convert_to_node(object)
  case object
  when Arel::Attributes::Attribute, Arel::Nodes::Node, Integer
    object
  when DateTime
    Arel.quoted(object, self)
  when Time
    Arel.quoted(object.strftime('%H:%M:%S'), self)
  when MBSTRING, String, Symbol
    Arel.quoted(object.to_s)
  when Date
    Arel.quoted(object.to_s, self)
  when NilClass
    Arel.sql('NULL')
  when ActiveSupport::Duration
    Arel.sql(object.to_i)
  when Array
    Arel.grouping(object.map{|e| convert_to_node(e)})
  else
    raise(ArgumentError, "#{object.class} cannot be converted to CONCAT arg")
  end
end

#convert_to_number(object) ⇒ Object 



147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
 
# File 'lib/arel_extensions/nodes/function.rb', line 147

def convert_to_number(object)
  case object
  when ArelExtensions::Nodes::Duration
    object.with_interval = true
    object
  when Arel::Attributes::Attribute, Arel::Nodes::Node
    object
  when Integer
    object.to_i.abs
  when DateTime, Date, Time, String, ActiveSupport::Duration
    object.to_i.abs
  when NilClass
    0
  else
    raise(ArgumentError, "#{object.class} cannot be converted to NUMBER arg")
  end
end

#convert_to_string_node(object) ⇒ Object 



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
113
114
115
 
# File 'lib/arel_extensions/nodes/function.rb', line 85

def convert_to_string_node(object)
  case object
  when Arel::Nodes::Node
    object
  when Integer
    Arel.quoted(object.to_s)
  when Arel::Attributes::Attribute
    case self.type_of_attribute(object)
    when :date
      ArelExtensions::Nodes::Format.new [object, 'yyyy-mm-dd']
    when :time
      ArelExtensions::Nodes::Format.new [object, '%H:%M:%S']
    else
      object
    end
  when DateTime
    Arel.quoted(object, self)
  when Time
    Arel.quoted(object.strftime('%H:%M:%S'), self)
  when MBSTRING, String
    Arel.quoted(object.to_s)
  when Date
    Arel.quoted(object, self)
  when NilClass
    Arel.sql(nil)
  when ActiveSupport::Duration
    Arel.quoted(object.to_i.to_s)
  else
    raise(ArgumentError, "#{object.class} cannot be converted to CONCAT arg")
  end
end

#expr ⇒ Object 



31
32
33
 
# File 'lib/arel_extensions/nodes/function.rb', line 31

def expr
  @expressions.first
end

#left ⇒ Object 



35
36
37
 
# File 'lib/arel_extensions/nodes/function.rb', line 35

def left
  @expressions.first
end

#return_type ⇒ Object

overrides as to make new Node like AliasPredication



19
20
21
 
# File 'lib/arel_extensions/nodes/function.rb', line 19

def return_type
  self.class.const_get(:RETURN_TYPE)
end

#right ⇒ Object 



39
40
41
 
# File 'lib/arel_extensions/nodes/function.rb', line 39

def right
  @expressions[1]
end

#type_of_attribute(att) ⇒ Object 



51
52
53
54
55
56
57
58
59
60
 
# File 'lib/arel_extensions/nodes/function.rb', line 51

def type_of_attribute(att)
  case att
  when Arel::Attributes::Attribute
    Arel.column_of(att.relation.table_name, att.name.to_s)&.type || att
  when ArelExtensions::Nodes::Function
    att.return_type
    #        else
    #          nil
  end
end