candy.util
Class ExternalFile

java.lang.Object
  |
  +--candy.core.candyObject
        |
        +--candy.util.ExternalFile

All Implemented Interfaces:

net.jini.core.entry.Entry, java.io.Serializable

public class ExternalFile

extends candyObject

ExternalFile encapsulates the file sharing mechanism inside of candy. This class is passed around through the JavaSpace and has an entry in the server app's file_list.

Author:

Jason Corso (jcorso@cs.jhu.edu)

See Also:

Serialized Form

Field Summary

byte[]	data the data itself of the ExternalFile
ExternalFileMeta	meta The meta-information for this external file

Fields inherited from class candy.core.candyObject

description, handle, timestamp

Constructor Summary

ExternalFile()
Construct an empty ExternalFile for use as a template

ExternalFile(ExternalFileMeta m)
Construct an empty ExternalFile with meta for use as a template

ExternalFile(java.io.File f, java.lang.String m)
Construct an ExternalFile form a File object

Method Summary

void	exportData(java.io.File f) Given the File f, the ExternalFile will write its data to disk
void	importData(java.io.File f) importData launches a dialog allowing the user to select a file

Methods inherited from class candy.core.candyObject

getDescription, getHandle, setDescription, setHandle

Methods inherited from class java.lang.Object

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

Field Detail

meta

public ExternalFileMeta meta

The meta-information for this external file

data

public byte[] data

the data itself of the ExternalFile

Constructor Detail

ExternalFile

public ExternalFile(java.io.File f,
                    java.lang.String m)

Construct an ExternalFile form a File object

ExternalFile

public ExternalFile()

Construct an empty ExternalFile for use as a template

ExternalFile

public ExternalFile(ExternalFileMeta m)

Construct an empty ExternalFile with meta for use as a template

Method Detail

importData

public void importData(java.io.File f)

importData launches a dialog allowing the user to select a file

exportData

public void exportData(java.io.File f)

Given the File f, the ExternalFile will write its data to disk