Package org.jgroups.util

Class MutableDigest

java.lang.Object

org.jgroups.util.Digest

org.jgroups.util.MutableDigest

All Implemented Interfaces:

java.lang.Iterable<Digest.Entry>, Constructable<Digest>, SizeStreamable, Streamable

public class MutableDigest
extends Digest

A mutable version of Digest. Has a fixed size (that of the members), but individual seqnos can be changed. This class is not synchronized

Author:

Bela Ban

Nested Class Summary

Nested classes/interfaces inherited from class org.jgroups.util.Digest

Digest.Entry, Digest.MyIterator

Field Summary

Fields inherited from class org.jgroups.util.Digest

members, seqnos

Constructor Summary

Constructors

Constructor	Description
MutableDigest(Address[] members)
MutableDigest(Digest digest)	Only used for testing

Method Summary

Modifier and Type	Method	Description
boolean	allSet()	Returns true if all members have a corresponding seqno >= 0, else false
protected int	countNonSetMembers()
protected static long[]	createEmptyArray(int size)
Address[]	getNonSetMembers()	Returns an array of members whose seqno is not set.
MutableDigest	merge(Address member, long highest_delivered_seqno, long highest_received_seqno)	Similar to set(), but if the sender already exists, its seqnos will be modified (no new entry) as follows: this.highest_delivered_seqno=max(this.highest_delivered_seqno, highest_delivered_seqno) this.highest_received_seqno=max(this.highest_received_seqno, highest_received_seqno)
MutableDigest	merge(Digest digest)	Adds a digest to this digest.
MutableDigest	set(Address member, long highest_delivered_seqno, long highest_received_seqno)
MutableDigest	set(Digest digest)

Methods inherited from class org.jgroups.util.Digest

capacity, checkPostcondition, contains, containsAll, copy, create, createArrays, equals, find, get, getMembersRaw, iterator, readFrom, readFrom, serializedSize, serializedSize, toString, toString, toString, writeTo, writeTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

MutableDigest

public MutableDigest(Address[] members)

MutableDigest

public MutableDigest(Digest digest)

Only used for testing

Method Detail

set

public MutableDigest set(Address member,
                         long highest_delivered_seqno,
                         long highest_received_seqno)

allSet

public boolean allSet()

Returns true if all members have a corresponding seqno >= 0, else false

getNonSetMembers

public Address[] getNonSetMembers()

Returns an array of members whose seqno is not set. Returns an empty array if all are set.

set

public MutableDigest set(Digest digest)

merge

public MutableDigest merge(Digest digest)

Adds a digest to this digest. For each sender in the other digest, the merge() method will be called.

merge

public MutableDigest merge(Address member,
                           long highest_delivered_seqno,
                           long highest_received_seqno)

Similar to set(), but if the sender already exists, its seqnos will be modified (no new entry) as follows:

1. this.highest_delivered_seqno=max(this.highest_delivered_seqno, highest_delivered_seqno)
2. this.highest_received_seqno=max(this.highest_received_seqno, highest_received_seqno)

createEmptyArray

protected static long[] createEmptyArray(int size)

countNonSetMembers

protected int countNonSetMembers()