org.rocksdb

Class Statistics

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.Statistics

All Implemented Interfaces:

java.lang.AutoCloseable

public class Statistics
extends RocksObject

Statistics to analyze the performance of a db. Pointer for statistics object is managed by Options class.

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

owningHandle_

Constructor Summary

Constructors

Constructor and Description
Statistics()
Statistics(java.util.EnumSet<HistogramType> ignoreHistograms)
Statistics(java.util.EnumSet<HistogramType> ignoreHistograms, Statistics otherStatistics)
Statistics(Statistics otherStatistics)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	disposeInternal(long handle)
long	getAndResetTickerCount(TickerType tickerType) Get the count for a ticker and reset the tickers count.
HistogramData	getHistogramData(HistogramType histogramType) Gets the histogram data for a particular histogram.
java.lang.String	getHistogramString(HistogramType histogramType) Gets a string representation of a particular histogram.
long	getTickerCount(TickerType tickerType) Get the count for a ticker.
void	reset() Resets all ticker and histogram stats.
void	setStatsLevel(StatsLevel statsLevel) Sets the stats level.
StatsLevel	statsLevel() Gets the current stats level.
java.lang.String	toString() String representation of the statistic object.

Methods inherited from class org.rocksdb.RocksObject

disposeInternal

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

Methods inherited from class org.rocksdb.AbstractNativeReference

dispose, finalize

Methods inherited from class java.lang.Object

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

Constructor Detail

Statistics

public Statistics()

Statistics

public Statistics(Statistics otherStatistics)

Statistics

public Statistics(java.util.EnumSet<HistogramType> ignoreHistograms)

Statistics

public Statistics(java.util.EnumSet<HistogramType> ignoreHistograms,
          Statistics otherStatistics)

Method Detail

statsLevel

public StatsLevel statsLevel()

Gets the current stats level.

Returns:

The stats level.

setStatsLevel

public void setStatsLevel(StatsLevel statsLevel)

Sets the stats level.

Parameters:

statsLevel - The stats level to set.

getTickerCount

public long getTickerCount(TickerType tickerType)

Get the count for a ticker.

Parameters:

tickerType - The ticker to get the count for

Returns:

The count for the ticker

getAndResetTickerCount

public long getAndResetTickerCount(TickerType tickerType)

Get the count for a ticker and reset the tickers count.

Parameters:

tickerType - The ticker to get the count for

Returns:

The count for the ticker

getHistogramData

public HistogramData getHistogramData(HistogramType histogramType)

Gets the histogram data for a particular histogram.

Parameters:

histogramType - The histogram to retrieve the data for

Returns:

The histogram data

getHistogramString

public java.lang.String getHistogramString(HistogramType histogramType)

Gets a string representation of a particular histogram.

Parameters:

histogramType - The histogram to retrieve the data for

Returns:

A string representation of the histogram data

reset

public void reset()
           throws RocksDBException

Resets all ticker and histogram stats.

Throws:

RocksDBException - if an error occurs when resetting the statistics.

toString

public java.lang.String toString()

String representation of the statistic object.

Overrides:

toString in class java.lang.Object

disposeInternal

protected final void disposeInternal(long handle)

Specified by:

disposeInternal in class RocksObject