Class: GraphAgent::Channels::BinaryOperatorAggregate

Inherits:
BaseChannel
  • Object
show all
Defined in:
lib/graph_agent/channels/binary_operator_aggregate.rb

Constant Summary

Constants inherited from BaseChannel

GraphAgent::Channels::BaseChannel::MISSING

Instance Attribute Summary collapse

Attributes inherited from BaseChannel

#key

Instance Method Summary collapse

Methods inherited from BaseChannel

#consume, #finish

Constructor Details

#initialize(operator:, key: "", default: MISSING) ⇒ BinaryOperatorAggregate

Returns a new instance of BinaryOperatorAggregate.



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 8

def initialize(operator:, key: "", default: MISSING)
  super(key: key)
  @operator = operator
  @value = default
end

Instance Attribute Details

#operator ⇒ Object (readonly)

Returns the value of attribute operator.



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 6

def operator
  @operator
end

Instance Method Details

#available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 35

def available?
  !@value.equal?(MISSING)
end

#checkpoint ⇒ Object 



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 39

def checkpoint
  @value
end

#copy ⇒ Object 



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 49

def copy
  ch = self.class.new(operator: @operator, key: key)
  ch.instance_variable_set(:@value, @value)
  ch
end

#from_checkpoint(checkpoint) ⇒ Object 



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 43

def from_checkpoint(checkpoint)
  ch = self.class.new(operator: @operator, key: key)
  ch.instance_variable_set(:@value, checkpoint.equal?(MISSING) ? MISSING : checkpoint)
  ch
end

#get ⇒ Object

Raises:



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 14

def get
  raise EmptyChannelError.new("Channel '#{key}' is empty") if @value.equal?(MISSING)

  @value
end

#update(values) ⇒ Object 



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# File 'lib/graph_agent/channels/binary_operator_aggregate.rb', line 20

def update(values)
  return false if values.empty?

  if @value.equal?(MISSING)
    @value = values.first
    values = values[1..]
  end

  values.each do |value|
    @value = @operator.call(@value, value)
  end

  true
end