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java.lang.Objectorg.hackystat.telemetry.analyzer.function.TelemetryFunction
org.hackystat.telemetry.analyzer.function.impl.FilterFunction
public class FilterFunction
Filters telemetry streams in a TelemetryStreamCollection
object by applying a
ranking function.
Nested Class Summary | |
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(package private) static class |
FilterFunction.AverageRankFunction
A rank function using average as ranking criteria. |
(package private) static class |
FilterFunction.DeltaRankFunction
A rank function using delta as ranking criteria. |
(package private) static class |
FilterFunction.LastRankFunction
A rank function using the lastest data point value as ranking criteria. |
(package private) static class |
FilterFunction.MaxRankFunction
A rank function using max as ranking criteria. |
(package private) static class |
FilterFunction.MinRankFunction
A rank function using min as ranking criteria. |
(package private) static interface |
FilterFunction.RankFunction
Rank function. |
(package private) static class |
FilterFunction.SimpleDeltaRankFunction
A rank function using the different between the last data point and the first data point as criteria. |
Constructor Summary | |
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FilterFunction()
Constructs this instance. |
Method Summary | |
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java.lang.Object |
compute(java.lang.Object[] parameters)
Performs filter operation. |
Methods inherited from class org.hackystat.telemetry.analyzer.function.TelemetryFunction |
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getName |
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 FilterFunction()
Method Detail |
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public java.lang.Object compute(java.lang.Object[] parameters) throws TelemetryFunctionException
TelemetryStreamCollection
only contains
telemetry streams that satisfies the specified criteria.
compute
in class TelemetryFunction
parameters
- An array of 3 objects.
TelemetryStreamCollection
instance.
String
representing ranking function name.
It must be one of "Sum|Max|Min|Last|Delta".
String
specifying how to apply cutoff value.
It must be one of "Above|Below|Top|Bottom|TopPercent|BottomPercent".
Number
instance representing cutoff value.
TelemetryStreamCollection
instance after filtering. Note
that it may contain no telemetry stream at all if no stream satisfies the criteria.
TelemetryFunctionException
- If anything is wrong.
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