com.bigdata.btree

Class MyEvictionListener

java.lang.Object

com.bigdata.btree.DefaultEvictionListener

com.bigdata.btree.MyEvictionListener

All Implemented Interfaces:

IEvictionListener, HardReferenceQueueEvictionListener<PO>

public class MyEvictionListener
extends DefaultEvictionListener

Extends DefaultEvictionListener to explicitly control when an eviction notice is expected and to verify that eviction notices are received as expected.

Version:

$Id$

Author:

Bryan Thompson

Constructor Summary

Constructors

Constructor and Description
MyEvictionListener()

Method Summary

Methods

Modifier and Type	Method and Description
void	assertEvicted() Test for an eviction event.
void	assertEvictionCount(int expected) Test for the expected #of eviction notices to date.
void	evicted(HardReferenceQueue<PO> queue, PO ref)
int	getEvictionCount() The #of eviction notices to date.
void	setExpectedRef(PO ref) Set the expected reference for the next eviction notice.
void	setExpectedRefs(PO[] refs) Set the next N expected references for eviction notices.

Methods inherited from class com.bigdata.btree.DefaultEvictionListener

evicted

Methods inherited from class java.lang.Object

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

Constructor Detail

MyEvictionListener

public MyEvictionListener()

Method Detail

setExpectedRefs

public void setExpectedRefs(PO[] refs)

Set the next N expected references for eviction notices. You can only do this when nothing is currently expected.

Parameters:

refs - The expected references.

Throws:

IllegalStateExecption - unless there is no current expected reference.

setExpectedRef

public void setExpectedRef(PO ref)

Set the expected reference for the next eviction notice. The listener will thrown an exception if there is a cache eviction unless you first invoke this method.

Parameters:

ref - The expected reference or null to cause the listener to throw an exception if a reference is evicted.

assertEvicted

public void assertEvicted()

Test for an eviction event.

Throws:

junit.framework.AssertionFailedError - if nothing was evicted since the last time an expected eviction reference was set.

assertEvictionCount

public void assertEvictionCount(int expected)

Test for the expected #of eviction notices to date.

Parameters:

expected -

getEvictionCount

public int getEvictionCount()

The #of eviction notices to date.

evicted

public void evicted(HardReferenceQueue<PO> queue,
           PO ref)

Throws:

junit.framework.AssertionFailedError - if the evicted reference is not the next expected eviction reference or if no eviction is expected.