Package org.terracotta.statistics

Class StatisticMapper<SOURCE extends java.lang.Enum<SOURCE>,TARGET extends java.lang.Enum<TARGET>>

java.lang.Object

org.terracotta.statistics.StatisticMapper<SOURCE,TARGET>

All Implemented Interfaces:

OperationObserver<TARGET>, OperationStatistic<TARGET>, SourceStatistic<ChainedOperationObserver<? super TARGET>>

public class StatisticMapper<SOURCE extends java.lang.Enum<SOURCE>,TARGET extends java.lang.Enum<TARGET>>
extends java.lang.Object
implements OperationStatistic<TARGET>

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.concurrent.ConcurrentMap<ChainedOperationObserver<? super TARGET>,ChainedOperationObserver<SOURCE>>	derivedStats
private java.util.Map<SOURCE,TARGET>	reverseTranslation
private java.lang.Class<SOURCE>	sourceType
private OperationStatistic<SOURCE>	statistic
private java.lang.Class<TARGET>	targetType
private java.util.Map<TARGET,java.util.Set<SOURCE>>	translation

Constructor Summary

Constructors

Constructor	Description
StatisticMapper(java.util.Map<TARGET,java.util.Set<SOURCE>> translation, OperationStatistic<SOURCE> statistic)

Method Summary

Modifier and Type	Method	Description
void	addDerivedStatistic(ChainedOperationObserver<? super TARGET> derived)	Register the given Observer to be called by this SourceStatistic
void	begin()	Called immediately prior to the operation beginning.
long	count(TARGET type)	Return the count of operations with the given type.
void	end(TARGET result)	Called immediately after the operation completes with no interesting parameters, and with the same thread the called {OperationObserver.begin()} before.
java.util.Collection<ChainedOperationObserver<? super TARGET>>	getDerivedStatistics()	Retrieve all registered statistics.
void	removeDerivedStatistic(ChainedOperationObserver<? super TARGET> derived)	Remove the given registered Observer from this SourceStatistic.
private static <B extends java.lang.Enum<B>,A extends java.lang.Enum<A>> java.util.Map<B,A>	reverse(java.util.Map<A,java.util.Set<B>> map)
ValueStatistic<java.lang.Long>	statistic(java.util.Set<TARGET> results)
ValueStatistic<java.lang.Long>	statistic(TARGET result)	Return a ValueStatistic returning the count for the given result.
long	sum()
long	sum(java.util.Set<TARGET> types)
java.lang.Class<TARGET>	type()

Methods inherited from class java.lang.Object

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

Field Detail

targetType

private final java.lang.Class<TARGET extends java.lang.Enum<TARGET>> targetType

sourceType

private final java.lang.Class<SOURCE extends java.lang.Enum<SOURCE>> sourceType

statistic

private final OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>> statistic

translation

private final java.util.Map<TARGET extends java.lang.Enum<TARGET>,java.util.Set<SOURCE extends java.lang.Enum<SOURCE>>> translation

reverseTranslation

private final java.util.Map<SOURCE extends java.lang.Enum<SOURCE>,TARGET extends java.lang.Enum<TARGET>> reverseTranslation

derivedStats

private final java.util.concurrent.ConcurrentMap<ChainedOperationObserver<? super TARGET extends java.lang.Enum<TARGET>>,ChainedOperationObserver<SOURCE extends java.lang.Enum<SOURCE>>> derivedStats

Constructor Detail

StatisticMapper

public StatisticMapper(java.util.Map<TARGET,java.util.Set<SOURCE>> translation,
                       OperationStatistic<SOURCE> statistic)

Method Detail

reverse

private static <B extends java.lang.Enum<B>,A extends java.lang.Enum<A>> java.util.Map<B,A> reverse(java.util.Map<A,java.util.Set<B>> map)

type

public java.lang.Class<TARGET> type()

Specified by:

type in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

statistic

public ValueStatistic<java.lang.Long> statistic(TARGET result)

Description copied from interface: OperationStatistic

Return a ValueStatistic returning the count for the given result.

Specified by:

statistic in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

Parameters:

result - the result of interest

Returns:

a ValueStatistic instance

statistic

public ValueStatistic<java.lang.Long> statistic(java.util.Set<TARGET> results)

Specified by:

statistic in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

count

public long count(TARGET type)

Description copied from interface: OperationStatistic

Return the count of operations with the given type.

Specified by:

count in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

Parameters:

type - the result type

Returns:

the operation count

sum

public long sum(java.util.Set<TARGET> types)

Specified by:

sum in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

sum

public long sum()

Specified by:

sum in interface OperationStatistic<SOURCE extends java.lang.Enum<SOURCE>>

addDerivedStatistic

public void addDerivedStatistic(ChainedOperationObserver<? super TARGET> derived)

Description copied from interface: SourceStatistic

Register the given Observer to be called by this SourceStatistic

Specified by:

addDerivedStatistic in interface SourceStatistic<SOURCE extends java.lang.Enum<SOURCE>>

Parameters:

derived - statistic to be registered

removeDerivedStatistic

public void removeDerivedStatistic(ChainedOperationObserver<? super TARGET> derived)

Description copied from interface: SourceStatistic

Remove the given registered Observer from this SourceStatistic.

Specified by:

removeDerivedStatistic in interface SourceStatistic<SOURCE extends java.lang.Enum<SOURCE>>

Parameters:

derived - statistic to be removed

getDerivedStatistics

public java.util.Collection<ChainedOperationObserver<? super TARGET>> getDerivedStatistics()

Description copied from interface: SourceStatistic

Retrieve all registered statistics.

Specified by:

getDerivedStatistics in interface SourceStatistic<SOURCE extends java.lang.Enum<SOURCE>>

Returns:

an unmodifiable collection of all derived statistics

begin

public void begin()

Description copied from interface: OperationObserver

Called immediately prior to the operation beginning.

Specified by:

begin in interface OperationObserver<SOURCE extends java.lang.Enum<SOURCE>>

end

public void end(TARGET result)

Description copied from interface: OperationObserver

Called immediately after the operation completes with no interesting parameters, and with the same thread the called {OperationObserver.begin()} before.

Specified by:

end in interface OperationObserver<SOURCE extends java.lang.Enum<SOURCE>>

Parameters:

result - the operation result