io.warp10.script.aggregator

Class Delta

java.lang.Object

io.warp10.script.NamedWarpScriptFunction

io.warp10.script.aggregator.Delta

All Implemented Interfaces:

WarpScriptAggregatorFunction, WarpScriptBucketizerFunction, WarpScriptMapperFunction, WarpScriptReducerFunction

public class Delta
extends NamedWarpScriptFunction
implements WarpScriptMapperFunction, WarpScriptBucketizerFunction, WarpScriptReducerFunction

Returns the delta between the first and last measures of the interval. Location and elevation returned are those of the latest measure.

Constructor Summary

Constructors

Constructor and Description
Delta(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	apply(java.lang.Object[] args)

Methods inherited from class io.warp10.script.NamedWarpScriptFunction

getName, refSnapshot, setName, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Delta

public Delta(java.lang.String name)

Method Detail

apply

public java.lang.Object apply(java.lang.Object[] args)
                       throws WarpScriptException

Specified by:

apply in interface WarpScriptAggregatorFunction

Throws:

WarpScriptException