Package org.opennms.netmgt.measurements.filters.impl

Class Derivative

java.lang.Object

org.opennms.netmgt.measurements.filters.impl.Derivative

All Implemented Interfaces:

Filter

public class Derivative
extends Object
implements Filter

Calculates the derivative. Useful to converting gauges into rates.

Author:

jwhite

Field Summary

Fields inherited from interface org.opennms.netmgt.measurements.api.Filter

TIMESTAMP_COLUMN_NAME

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Derivative()
	Derivative(String inputColumn, String outputColumn)

Method Summary

Modifier and Type	Method	Description
void	filter(com.google.common.collect.RowSortedTable<Long,String,Double> qrAsTable)

Methods inherited from class java.lang.Object

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

Constructor Detail

Derivative

protected Derivative()

Derivative

public Derivative(String inputColumn,
                  String outputColumn)

Method Detail

filter

public void filter(com.google.common.collect.RowSortedTable<Long,String,Double> qrAsTable)
            throws Exception

Specified by:

filter in interface Filter

Throws:

Exception