Class: Halumi::Query

Inherits:
Object
  • Object
show all
Defined in:
lib/halumi/query.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params = {}, relation = nil) ⇒ Query

Returns a new instance of Query.



31
32
33
34
35
 
# File 'lib/halumi/query.rb', line 31

def initialize(params = {}, relation = nil)
  @relation = relation&.all || class_relation
  @params = params
  @subqueries = subqueries
end

Instance Attribute Details

#relation ⇒ Object (readonly)

Returns the value of attribute relation.



7
8
9
 
# File 'lib/halumi/query.rb', line 7

def relation
  @relation
end

Class Method Details

.inherited(klass) ⇒ Object 



9
10
11
12
13
 
# File 'lib/halumi/query.rb', line 9

def self.inherited(klass)
  klass.instance_variable_set(:@subqueries, @subqueries.clone)
  klass.instance_variable_set(:@relation, @relation)
  klass.instance_variable_set(:@defined_params, [])
end

.merge(subquery) ⇒ Object 



19
20
21
 
# File 'lib/halumi/query.rb', line 19

def self.merge(subquery)
  @subqueries << subquery
end

.model(model) ⇒ Object 



15
16
17
 
# File 'lib/halumi/query.rb', line 15

def self.model(model)
  @relation = model.all
end

.param(param_name, type = nil, &block) ⇒ Object 



23
24
25
26
27
28
29
 
# File 'lib/halumi/query.rb', line 23

def self.param(param_name, type = nil, &block)
  block ||= proc { type ? type[@params[param_name]] : @params[param_name] }

  define_method(param_name, block)

  @defined_params << param_name
end

Instance Method Details

#call ⇒ Object 



37
38
39
 
# File 'lib/halumi/query.rb', line 37

def call
  respond_to?(:execute) ? safe_execute : merge_subqueries
end