Package org.infinispan.counter.impl.function

Class CompareAndSwapFunction<K extends CounterKey>

java.lang.Object

org.infinispan.counter.impl.function.CompareAndSwapFunction<K>

All Implemented Interfaces:

Function<org.infinispan.functional.EntryView.ReadWriteEntryView<K,CounterValue>,Object>

public class CompareAndSwapFunction<K extends CounterKey>
extends Object

The compare-and-swap function to update the CounterValue.

It returns the previous value and it is considered successful when the return value is the expected.

For a bounded counter (if the current value is equal to the expected), if the value is outside the bounds, it returns CounterState.LOWER_BOUND_REACHED or CounterState.UPPER_BOUND_REACHED if the lower bound or upper bound is violated.

Since:

9.2

Author:

Pedro Ruivo

Field Summary

Fields

Modifier and Type	Field	Description
static final org.infinispan.commons.marshall.AdvancedExternalizer<CompareAndSwapFunction>	EXTERNALIZER

Constructor Summary

Constructors

Constructor	Description
CompareAndSwapFunction(long expect, long value)

Method Summary

Modifier and Type	Method	Description
final Object	apply(org.infinispan.functional.EntryView.ReadWriteEntryView<K,CounterValue> entryView)
protected Log	getLog()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Function

andThen, compose

Field Details

EXTERNALIZER

public static final org.infinispan.commons.marshall.AdvancedExternalizer<CompareAndSwapFunction> EXTERNALIZER

Constructor Details

CompareAndSwapFunction

public CompareAndSwapFunction(long expect,
 long value)

Method Details

getLog

protected Log getLog()

apply

public final Object apply(org.infinispan.functional.EntryView.ReadWriteEntryView<K,CounterValue> entryView)

Specified by:

apply in interface Function<K extends CounterKey,R>