Package org.apache.ignite.internal.metric

Class IoStatisticsHolderQuery

java.lang.Object

org.apache.ignite.internal.metric.IoStatisticsHolderQuery

All Implemented Interfaces:

IoStatisticsHolder

public class IoStatisticsHolderQuery
extends Object
implements IoStatisticsHolder

Query Statistics holder to gather statistics related to concrete query. Used in org.apache.ignite.internal.stat.IoStatisticsHolderIndex and org.apache.ignite.internal.stat.IoStatisticsHolderCache. Query Statistics holder to gather statistics related to concrete query. Used in org.apache.ignite.internal.stat.IoStatisticsHolderIndex and org.apache.ignite.internal.stat.IoStatisticsHolderCache.

Field Summary

Fields

Modifier and Type	Field	Description
static String	LOGICAL_READS
static String	PHYSICAL_READS

Constructor Summary

Constructors

Constructor	Description
IoStatisticsHolderQuery()

Method Summary

Modifier and Type	Method	Description
long	logicalReads()
void	merge(long logicalReads, long physicalReads)	Add given given statistics into this.
String	metricRegistryName()
long	physicalReads()
String	toString()
void	trackLogicalRead(long pageAddr)	Track logical read of given page.
void	trackPhysicalAndLogicalRead(long pageAddr)	Track physical and logical read of given page.

Methods inherited from class java.lang.Object

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

Field Detail

PHYSICAL_READS

public static final String PHYSICAL_READS

See Also:

Constant Field Values

LOGICAL_READS

public static final String LOGICAL_READS

See Also:

Constant Field Values

Constructor Detail

IoStatisticsHolderQuery

public IoStatisticsHolderQuery()

Method Detail

trackLogicalRead

public void trackLogicalRead(long pageAddr)

Track logical read of given page.

Specified by:

trackLogicalRead in interface IoStatisticsHolder

Parameters:

pageAddr - Address of page.

trackPhysicalAndLogicalRead

public void trackPhysicalAndLogicalRead(long pageAddr)

Track physical and logical read of given page.

Specified by:

trackPhysicalAndLogicalRead in interface IoStatisticsHolder

Parameters:

pageAddr - start address of page.

logicalReads

public long logicalReads()

Specified by:

logicalReads in interface IoStatisticsHolder

Returns:

Number of logical reads.

physicalReads

public long physicalReads()

Specified by:

physicalReads in interface IoStatisticsHolder

Returns:

Number of physical reads.

metricRegistryName

public String metricRegistryName()

Specified by:

metricRegistryName in interface IoStatisticsHolder

Returns:

Metric registry name.

merge

public void merge(long logicalReads,
                  long physicalReads)

Add given given statistics into this. Merge query statistics.

Parameters:

logicalReads - Logical reads which will be added to current query statistics.

physicalReads - Physical reads which will be added to current query statistics,

toString

public String toString()

Overrides:

toString in class Object