Class: SQB::QueryString

Inherits:
Object
  • Object
show all
Defined in:
lib/sqb/query_string.rb

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ QueryString

Returns a new instance of QueryString.



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# File 'lib/sqb/query_string.rb', line 4

def initialize(&block)
  @query = []
  block.call(self) if block_given?
end

Instance Method Details

#add(*items) ⇒ Object 



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# File 'lib/sqb/query_string.rb', line 13

def add(*items)
  if @group_joiner
    @group_items ||= []
    @group_items << items
  else
    items.flatten.each do |item|
      add_to_query(resolve_for_query(item))
    end
  end
end

#group(joiner, &block) ⇒ Object 



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# File 'lib/sqb/query_string.rb', line 24

def group(joiner, &block)
  @group_joiner = joiner
  block.call
ensure
  if @group_items
    # If we have some group items after running our group,
    # add them into the query now.
    @group_items.each do |items|
      raw_q = items.map { |i| resolve_for_query(i) }.join(' ')
      raw_q << @group_joiner unless items === @group_items.last
      add_to_query(raw_q)
    end
  end
  @group_items = nil
  @group_joiner = nil
end

#to_s ⇒ Object 



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# File 'lib/sqb/query_string.rb', line 9

def to_s
  @query.join(" ")
end

#with_brackets(&block) ⇒ Object 



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# File 'lib/sqb/query_string.rb', line 41

def with_brackets(&block)
  @open_bracket = true
  block.call
ensure
  @query.last << ")"
  @open_bracket = nil
  @close_bracket = nil
end