| ComparisonAggregator<T> | 
 Abstract Aggregator for comparing two values in a stream. 
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| ComparisonAggregator.State | 
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| Count | 
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| Debug | 
 Filter for debugging purposes. 
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| Equals | 
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| FilterNull | 
 Simple `Filter` implementation that filters out any tuples that have fields with a value of `null`. 
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| FirstN | 
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| FirstN.FirstNAgg | 
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| FirstN.FirstNSortedAgg | 
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| MapGet | 
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| Max | 
 This aggregator computes the maximum of aggregated tuples in a stream. 
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| MaxWithComparator<T> | 
 This aggregator computes the maximum of aggregated tuples in a stream. 
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| Min | 
 This aggregator computes the minimum of aggregated tuples in a stream. 
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| MinWithComparator<T> | 
 This aggregator computes the minimum of aggregated tuples in a stream. 
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| Negate | 
 A `Filter` implementation that inverts another delegate `Filter`. 
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| SnapshotGet | 
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| Sum | 
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| TupleCollectionGet | 
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