com.ebay.carad.os.vitalsigns.dataretrievers
Class DifferenceQueryRateLogger

java.lang.Object
  com.ebay.carad.os.vitalsigns.dataretrievers.QueryLogger
      com.ebay.carad.os.vitalsigns.dataretrievers.DifferenceQueryLogger
          com.ebay.carad.os.vitalsigns.dataretrievers.DifferenceQueryRateLogger

All Implemented Interfaces:

IDataRetriever, ITemplatizable, java.lang.Cloneable

public class DifferenceQueryRateLogger
extends DifferenceQueryLogger

Takes a difference query, and logs its value as a rate per time period. The time period is specified in minutes, via the constructor.

Data that is logged = CurrentCount / (System.currentTimeMillis() - lastTimeStamp) * millisPerInterval

Version:

$Id$

Author:

Jeremy Kraybill, Jeremy Thomerson

Field Summary

private long	lastTick
private static org.apache.log4j.Logger	LOGGER Class logger.
private long	millisPer

Fields inherited from class com.ebay.carad.os.vitalsigns.dataretrievers.QueryLogger

ZERO

Fields inherited from interface com.ebay.carad.os.vitalsigns.IDataRetriever

NO_OP_DATA_RETRIEVER

Constructor Summary

DifferenceQueryRateLogger()
Basic constructor.

Method Summary

java.lang.Float	getData()
void	setMinsPerTick(int minsPerTick) Sets the number of minutes to calculate rate against.

Methods inherited from class com.ebay.carad.os.vitalsigns.dataretrievers.DifferenceQueryLogger

getValue

Methods inherited from class com.ebay.carad.os.vitalsigns.dataretrievers.QueryLogger

clone, getData, getQuery, getSqlDAO, setQuery, setSqlDAO, templatize

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.apache.log4j.Logger LOGGER

Class logger.

millisPer

private long millisPer

lastTick

private long lastTick

Constructor Detail

DifferenceQueryRateLogger

public DifferenceQueryRateLogger()

Basic constructor.

Method Detail

setMinsPerTick

public void setMinsPerTick(int minsPerTick)

Sets the number of minutes to calculate rate against. For instance, if you want to log this data as a rate per minute, minsPerTick should be 1; per hour, 60; etc.

Parameters:

minsPerTick - the number of minutes per interval

getData

public java.lang.Float getData()

Overrides:

getData in class DifferenceQueryLogger

See Also:

class comment for details, QueryLogger.getData()