org.jurvis.util
Class JvCachedFile

java.lang.Object
  org.jurvis.util.JvCachedFile

public class JvCachedFile
extends Object

Information about a file in a JvFileCache.

Author:

Neil W. Weber

Field Summary

protected File	file
static int	FILE_NAME_MAX The maximum length of a file name.
protected Properties	properties
protected File	propertiesFile
protected URL	url

Constructor Summary

JvCachedFile(JvFileCache fileCache, URL url)
Create a new JvCachedFile.

Method Summary

boolean	exists() Determine if the URL has already been cached.
String	getEtag()
long	getExpires()
File	getFile()
long	getLastModified()
long	getLastRequested()
long	getLength()
URL	getURL()
protected String	mapName() Map the name of the original file name to a unique cache file name that is filesystem-safe.
protected void	readProperties() Read the meta information about the URL.
void	setEtag(String etag)
void	setExpires(long expires)
void	setLastModified(long lastModified)
void	setLastRequested(long lastRequested)
String	toString()
void	writeProperties() Write the meta information about the URL.

Methods inherited from class java.lang.Object

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

Field Detail

FILE_NAME_MAX

public static final int FILE_NAME_MAX

The maximum length of a file name. I actually have no idea what it might be in Windows.

See Also:

Constant Field Values

url

protected URL url

file

protected File file

propertiesFile

protected File propertiesFile

properties

protected Properties properties

Constructor Detail

JvCachedFile

public JvCachedFile(JvFileCache fileCache,
                    URL url)

Create a new JvCachedFile.

Parameters:

fileCache - the file cache this cached file will be part of

url - the URL of the file being cached

Method Detail

mapName

protected String mapName()

Map the name of the original file name to a unique cache file name that is filesystem-safe.

Returns:

the filesystem-safe name

exists

public boolean exists()

Determine if the URL has already been cached.

Returns:

true if the URL has already been cached; false otherwise.

readProperties

protected void readProperties()

Read the meta information about the URL.

writeProperties

public void writeProperties()

Write the meta information about the URL.

getURL

public URL getURL()

getFile

public File getFile()

getLength

public long getLength()

getLastModified

public long getLastModified()

setLastModified

public void setLastModified(long lastModified)

getLastRequested

public long getLastRequested()

setLastRequested

public void setLastRequested(long lastRequested)

getExpires

public long getExpires()

setExpires

public void setExpires(long expires)

getEtag

public String getEtag()

setEtag

public void setEtag(String etag)

toString

public String toString()

Overrides:

toString in class Object