Class: Bmg::Sql::Processor::LimitOffset

Inherits:
Bmg::Sql::Processor show all
Defined in:
lib/bmg/sql/processor/limit_offset.rb

Constant Summary

Constants inherited from Bmg::Sql::Processor

UnexpectedError

Instance Attribute Summary collapse

Attributes inherited from Bmg::Sql::Processor

#builder

Instance Method Summary collapse

Methods inherited from Bmg::Sql::Processor

#on_with_exp

Constructor Details

#initialize(limit, offset, builder) ⇒ LimitOffset

Returns a new instance of LimitOffset.



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# File 'lib/bmg/sql/processor/limit_offset.rb', line 6

def initialize(limit, offset, builder)
  super(builder)
  @limit = limit
  @offset = offset
end

Instance Attribute Details

#limit ⇒ Object (readonly)

Returns the value of attribute limit.



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# File 'lib/bmg/sql/processor/limit_offset.rb', line 11

def limit
  @limit
end

#offset ⇒ Object (readonly)

Returns the value of attribute offset.



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# File 'lib/bmg/sql/processor/limit_offset.rb', line 11

def offset
  @offset
end

Instance Method Details

#on_select_exp(sexpr) ⇒ Object 



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# File 'lib/bmg/sql/processor/limit_offset.rb', line 20

def on_select_exp(sexpr)
  sexpr = builder.from_self(sexpr) if must_from_self?(sexpr)

  limit_clause = builder.limit_clause(limit)
  offset_clause = builder.offset_clause(offset)
  sexpr.with_push(limit_clause, offset_clause)
end

#on_set_operator(sexpr) ⇒ Object Also known as: on_union, on_except, on_intersect 



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# File 'lib/bmg/sql/processor/limit_offset.rb', line 13

def on_set_operator(sexpr)
  apply(builder.from_self(sexpr))
end