public class LongSumOperator extends AbstractMemorylessAggregationOperator<java.lang.Long,java.lang.Long>
Modifier and Type | Field and Description |
---|---|
static LongSumOperator |
INSTANCE |
Modifier and Type | Method and Description |
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java.lang.Long |
createNeutral() |
java.lang.String |
getName()
A name or identifier of the operator.
|
java.lang.String |
getShortDescription()
A textual description of the operator.
|
boolean |
isNeutral(java.lang.Long result) |
java.lang.Long |
update(java.lang.Long oldResult,
java.lang.Long updateValue,
boolean isInsertion) |
getAggregate
public static final LongSumOperator INSTANCE
public java.lang.String getShortDescription()
IMultisetAggregationOperator
public java.lang.String getName()
IMultisetAggregationOperator
public java.lang.Long createNeutral()
public boolean isNeutral(java.lang.Long result)
public java.lang.Long update(java.lang.Long oldResult, java.lang.Long updateValue, boolean isInsertion)