net.cnri.repository.ref

Class DigitalObjectReferenceCounter

java.lang.Object

net.cnri.repository.ref.DigitalObjectReferenceCounter

public class DigitalObjectReferenceCounter
extends java.lang.Object

Counts references by object handle to DigitalObjects and Data Elements. Override unreachable(String) to perform an object automatically when a handle has no extant references.

Constructor Summary

Constructors

Constructor and Description
DigitalObjectReferenceCounter()

Method Summary

Methods

Modifier and Type	Method and Description
void	cleanUp() Remove references to DigitalObjects and DataElements that have been garbage collected.
int	get(java.lang.String handle) Return the number of tracked references to the given handle.
int	getTotalCount() Returns the total number of tracked references to all handles
java.lang.String	pollHandle()
java.lang.String	removeHandle()
java.lang.String	removeHandle(long timeout)
void	track(DataElement el) Track a reference to the given DataElement.
void	track(DigitalObject dobj) Track a reference to the given DigitalObject.

Methods inherited from class java.lang.Object

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

Constructor Detail

DigitalObjectReferenceCounter

public DigitalObjectReferenceCounter()

Method Detail

track

public void track(DigitalObject dobj)

Track a reference to the given DigitalObject.

track

public void track(DataElement el)

Track a reference to the given DataElement.

cleanUp

public void cleanUp()

Remove references to DigitalObjects and DataElements that have been garbage collected.

getTotalCount

public int getTotalCount()

Returns the total number of tracked references to all handles

get

public int get(java.lang.String handle)

Return the number of tracked references to the given handle.

pollHandle

public java.lang.String pollHandle()

removeHandle

public java.lang.String removeHandle()
                              throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException

removeHandle

public java.lang.String removeHandle(long timeout)
                              throws java.lang.InterruptedException

Throws:

java.lang.InterruptedException