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java.lang.Object storm.trident.operation.builtin.Count
public class Count
Constructor Summary | |
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Count()
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Method Summary | |
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java.lang.Long |
combine(java.lang.Long val1,
java.lang.Long val2)
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java.lang.Long |
init(TridentTuple tuple)
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java.lang.Long |
zero()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Count()
Method Detail |
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public java.lang.Long init(TridentTuple tuple)
init
in interface CombinerAggregator<java.lang.Long>
public java.lang.Long combine(java.lang.Long val1, java.lang.Long val2)
combine
in interface CombinerAggregator<java.lang.Long>
public java.lang.Long zero()
zero
in interface CombinerAggregator<java.lang.Long>
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