rice.post.storage
Class ContentHashReference

java.lang.Object
  rice.post.storage.ContentHashReference

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

EmailDataReference, LogEntryReference

public class ContentHashReference

extends java.lang.Object

implements java.io.Serializable

This class serves as a reference to a PostObject stored in the Post system. This class knows both the location in the network and the encryption key of the corresponding PostData object. This class has been extended to support multiple object locations and keys, with each stored in ContentHash form. This is to allow very large objects to be transparently broken up into a group of smaller objects, and each fragment is stored seperately. Note that a readObject() method has been defined to support the automatic migration of old-style references to the new style.

Version:

$Id: ContentHashReference.java 2222 2005-02-11 17:47:34Z amislove $

See Also:

Serialized Form

Constructor Summary

ContentHashReference(Id[] locations, byte[][] keys)
Contructs a PostDataReference object given the address and encryption key of the object.

Method Summary

boolean	equals(java.lang.Object o)
byte[][]	getKeys()
Id[]	getLocations()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ContentHashReference

public ContentHashReference(Id[] locations,
                            byte[][] keys)

Contructs a PostDataReference object given the address and encryption key of the object.

Parameters:

location - The location in PAST of the PostData object

key - The encryption key of the PostData object

Method Detail

getLocations

public Id[] getLocations()

Returns:

The locations of the data referenced by this object

getKeys

public byte[][] getKeys()

Returns:

The encryption keys for the data

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object