Class: Queris::Query::SortOp

Inherits:
Op
  • Object
show all
Defined in:
lib/queris/query/operations.rb

Constant Summary collapse

COMMAND = 
:zinterstore
SYMBOL = 
:sortby

Instance Attribute Summary

Attributes inherited from Op

#fragile, #operands

Instance Method Summary collapse

Methods inherited from Op

#command, #initialize, #keys, #marshal_dump, #notready!, #optimize, #optimized?, #query_run_stage_release, #subqueries, #symbol, #temp_keys, #temp_keys?, #to_s, #weights

Constructor Details

This class inherits a constructor from Queris::Query::Op

Instance Method Details

#json_redis_dump ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 365

def json_redis_dump
  operands.map do |op|
    {key: op.index.key, multiplier: op.value}
  end
end

#operand_key(op) ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 379

def operand_key(op)
  op.index.key op.value
end

#operand_key_weight(op) ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 374

def operand_key_weight(op); op.value; end

#prepare ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 375

def prepare
  #don't trigger the rangehack
  super { |op| op.index.key op.value }
end

#push(index, reverse = nil) ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 370

def push(index, reverse=nil)
  super(index, reverse ? -1 : 1)
end

#query_run_stage_inspect(r, q) ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 382

def query_run_stage_inspect(r, q)
  operands.each do |op|
    #don't trigger the rangehack
    op.gather_key_sizes(r)
  end
end

#run(redis, target, first = false, trace_callback = nil) ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 388

def run(redis, target, first=false, trace_callback=nil)
  sort_keys = keys(target, first)
  redis.send self.class::COMMAND, target, sort_keys, :weights => weights(first)
  if trace_callback
    raise NotImplemented, "Can't trace multi-sorts yet." if sort_keys.count > 2 || operands.count > 1
    trace_callback.call(self, operands.first, target)
  end
end

#target_key_weight ⇒ Object 



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# File 'lib/queris/query/operations.rb', line 373

def target_key_weight; 0; end