20 lines
390 B
Ruby
20 lines
390 B
Ruby
class WordCountBolt
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def initialize
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@counts = Hash.new{|h, k| h[k] = 0}
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end
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def prepare(conf, context, collector)
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@collector = collector
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end
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def execute(tuple)
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word = tuple.getString(0)
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@counts[word] += 1
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@collector.emit(Values.new(word, @counts[word]))
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end
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def declare_output_fields(declarer)
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declarer.declare(Fields.new("word", "count"))
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end
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end
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