Package org.rrd4j.data

Class Variable.FIRST

java.lang.Object

org.rrd4j.data.Variable

org.rrd4j.data.Variable.FIRST

Enclosing class:

Variable

public static class Variable.FIRST
extends Variable

Find the first valid data point and it's timestamp

Nested Class Summary

Nested classes/interfaces inherited from class org.rrd4j.data.Variable

Variable.AVERAGE, Variable.ComparPercentElemen, Variable.FIRST, Variable.LAST, Variable.LSLCORREL, Variable.LSLINT, Variable.LSLSLOPE, Variable.MAX, Variable.MIN, Variable.PercentElem, Variable.PERCENTILE, Variable.PERCENTILENAN, Variable.STDDEV, Variable.TOTAL, Variable.Value

Field Summary

Fields inherited from class org.rrd4j.data.Variable

INVALIDVALUE

Constructor Summary

Constructors

Constructor	Description
FIRST()

Method Summary

Modifier and Type	Method	Description
protected Variable.Value	fill(long[] timestamps, double[] values, long start, long end)	This method is call with the needed values, extracted from the datasource to do the calculation.

Methods inherited from class org.rrd4j.data.Variable

calculate, getValue

Methods inherited from class java.lang.Object

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

Constructor Details

FIRST

public FIRST()

Method Details

fill

protected Variable.Value fill(long[] timestamps,
 double[] values,
 long start,
 long end)

Description copied from class: Variable

This method is call with the needed values, extracted from the datasource to do the calculation. Value is to be filled with both the double value and a possible timestamp, when it's used to find a specific point

Specified by:

fill in class Variable

Parameters:

timestamps - the timestamps for the value

values - the actual values

start - the start of the period

end - the end of the period

Returns:

a filled Value object