mondrian.rolap.agg
Class CountingAggregationManager

java.lang.Object
  mondrian.rolap.RolapAggregationManager
      mondrian.rolap.agg.AggregationManager
          mondrian.rolap.agg.CountingAggregationManager

public class CountingAggregationManager
extends AggregationManager

This class adds to AggregationManager counters for aggregation cache hit and miss. It should only be used for testing purpose due to potential performance regression by the introduction of synchronized blocks.

Author:

Khanh Vu

Nested Class Summary

Nested classes/interfaces inherited from class mondrian.rolap.agg.AggregationManager

AggregationManager.PinSetImpl

Nested classes/interfaces inherited from class mondrian.rolap.RolapAggregationManager

RolapAggregationManager.PinSet

Constructor Summary

CountingAggregationManager()

Method Summary

Object	getCellFromCache(CellRequest request) Calls super method and sets counters.
Object	getCellFromCache(CellRequest request, RolapAggregationManager.PinSet pinSet) Calls super method and sets counters.
double	getHitRatio() Returns the cache hit ratio.
int	getMissCount() Returns number of cache misses.
int	getRequestCount() Returns total number of cache requests.
void	resetCounters() Resets both counters to zero

Methods inherited from class mondrian.rolap.agg.AggregationManager

createPinSet, findAgg, generateSql, getDrillThroughSql, getLogger, instance, loadAggregation

Methods inherited from class mondrian.rolap.RolapAggregationManager

getCacheCellReader, getCacheControl, makeCacheRegion, makeDrillThroughRequest, makeRequest, makeRequest

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingAggregationManager

CountingAggregationManager()

Method Detail

getCellFromCache

public Object getCellFromCache(CellRequest request)

Calls super method and sets counters.

Overrides:

getCellFromCache in class AggregationManager

Parameters:

request - Cell request

Returns:

Cell value, or null if cell is not in any aggregation in cache, or Util.nullValue if cell's value is null

getCellFromCache

public Object getCellFromCache(CellRequest request,
                               RolapAggregationManager.PinSet pinSet)

Calls super method and sets counters.

Overrides:

getCellFromCache in class AggregationManager

getRequestCount

public int getRequestCount()

Returns total number of cache requests.

Returns:

an integer represents value of request counter

getMissCount

public int getMissCount()

Returns number of cache misses.

Returns:

an integer represents value of cache miss counter

getHitRatio

public double getHitRatio()

Returns the cache hit ratio.

Returns:

a double value represent hit ratio

resetCounters

public void resetCounters()

Resets both counters to zero