rice.email
Class SnapShot

java.lang.Object
  rice.email.SnapShot

All Implemented Interfaces:

java.io.Serializable, PostData

public class SnapShot

extends java.lang.Object

implements PostData

Serves as a summary of the log chain up to the current point. Lets the email reader display the current emails without having to read through the entire chain.

Author:

Joe Montgomery

See Also:

Serialized Form

Constructor Summary

SnapShot(StoredEmail[] emails, LogEntry entry)
Constructor for SnapShot.

Method Summary

ContentHashReference	buildContentHashReference(Id[] location, byte[][] key) This method dynamically builds an appropriate ContentHashReference for this type of PostData given a location and key.
SecureReference	buildSecureReference(Id location, byte[] key) This method dynamically builds an appropriate SecureReference for this type of PostData given a location and key.
SignedReference	buildSignedReference(Id location) This method dynamically builds an appropriate SignedReference for this type of PostData given a location.
boolean	equals(java.lang.Object o) Equals method
StoredEmail[]	getStoredEmails() Returns all of the emails that the SnapShot contains.
LogEntry	getTopEntry() Returns the most recent entry in the log, at the time of the snapshot

Methods inherited from class java.lang.Object

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

Constructor Detail

SnapShot

public SnapShot(StoredEmail[] emails,
                LogEntry entry)

Constructor for SnapShot. For the given email, creates an entry which can be used in a log chain. The next field is the next LogNode in the chain.

Parameters:

email - the email to store

top - The top of the current log

Method Detail

getStoredEmails

public StoredEmail[] getStoredEmails()

Returns all of the emails that the SnapShot contains.

Returns:

the valid emails at the point of the SnapShot

getTopEntry

public LogEntry getTopEntry()

Returns the most recent entry in the log, at the time of the snapshot

Returns:

The most recent log entry reference

equals

public boolean equals(java.lang.Object o)

Equals method

Overrides:

equals in class java.lang.Object

Parameters:

o - The object to compare to

Returns:

Whether or not we are equal

buildSignedReference

public SignedReference buildSignedReference(Id location)

This method dynamically builds an appropriate SignedReference for this type of PostData given a location.

Specified by:

buildSignedReference in interface PostData

Parameters:

location - The location of the data

Returns:

A pointer to the data

buildContentHashReference

public ContentHashReference buildContentHashReference(Id[] location,
                                                      byte[][] key)

This method dynamically builds an appropriate ContentHashReference for this type of PostData given a location and key.

Specified by:

buildContentHashReference in interface PostData

Parameters:

location - The location of the data

key - The for the data

Returns:

A pointer to the data

buildSecureReference

public SecureReference buildSecureReference(Id location,
                                            byte[] key)

This method dynamically builds an appropriate SecureReference for this type of PostData given a location and key.

Specified by:

buildSecureReference in interface PostData

Parameters:

location - The location of the data

key - The for the data

Returns:

A pointer to the data