com.ptc.wvs.client.pview
Class PViewFileCache

java.lang.Object
  com.ptc.wvs.client.pview.PViewFileCache

public class PViewFileCache

extends Object

PViewFileCache is used to track the usage of files in the PViewCache When multiple instances of the viewer are in use, for a given url references to some viewable content (shapesource), PView will first look to its understanding of what files have been viewed. Hence when it comes to delete files from the cache, it is important no other instance of the viewer is using the file.

Supported API: false

Extendable: false

Field Summary

private String	file
private String	url
private Vector	usedBy

Constructor Summary

PViewFileCache(String url, String file, int usedby)
Creates new PViewFileCache object

Method Summary

void	addUsedBy(int usedby) Adds another viewer reference
String	getFile() Returns the associated file reference
String	getUrl() Returns the associated url reference
boolean	isUsed() Determines if FileCache is referenced by any viewer
boolean	isUsedBy(int usedby) Determines if currently used by the specified viewer reference
void	removeUsedBy(int usedby) Removes a viewers reference

Methods inherited from class java.lang.Object

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

Field Detail

usedBy

private Vector usedBy

url

private String url

file

private String file

Constructor Detail

PViewFileCache

public PViewFileCache(String url,
                      String file,
                      int usedby)

Creates new PViewFileCache object

Parameters:

url - the url that is referenced by PView

file - the actual file in the Cache

usedby - a reference to the viewer, typically the HWND (window handle)

Method Detail

addUsedBy

public void addUsedBy(int usedby)

Adds another viewer reference

isUsedBy

public boolean isUsedBy(int usedby)

Determines if currently used by the specified viewer reference

Returns:

True if currently used

removeUsedBy

public void removeUsedBy(int usedby)

Removes a viewers reference

isUsed

public boolean isUsed()

Determines if FileCache is referenced by any viewer

Returns:

True if currently used

getUrl

public String getUrl()

Returns the associated url reference

Returns:

the url

getFile

public String getFile()

Returns the associated file reference

Returns:

the file name