rice.p2p.glacier
Class FragmentKeySet

java.lang.Object
  rice.p2p.glacier.FragmentKeySet

All Implemented Interfaces:

java.io.Serializable, IdSet

public class FragmentKeySet

extends java.lang.Object

implements IdSet

DESCRIBE THE CLASS

Version:

$Id: FragmentKeySet.java 2693 2005-08-05 14:00:47Z jeffh $

Author:

ahae

See Also:

Serialized Form

Constructor Summary

	FragmentKeySet() Constructor.
	FragmentKeySet(FragmentKeySet o) Copy constructor.
protected	FragmentKeySet(java.util.SortedMap s) Constructor.

Method Summary

void	addId(Id id) add a member
void	addMember(Id id) add a member
Id[]	asArray() return this set as an array
IdSet	build() Returns a new, empty IdSet of this type
java.lang.Object	clone() DESCRIBE THE METHOD
byte[]	getHash() compute a fingerprint of the members in this IdSet
java.util.Iterator	getIterator() return an iterator over the elements of this set
byte[]	hash() return a hash of this set
boolean	isMember(Id id) test membership
boolean	isMemberId(Id id) test membership
FragmentKey	maxMember() return the largest member id
FragmentKey	minMember() return the smallest member id
int	numElements() return the number of elements
void	removeId(Id id) remove a member
void	removeMember(Id id) remove a member
FragmentKeySet	subSet(FragmentKeyRange range) return a subset of this set, consisting of the member ids in a given range
FragmentKeySet	subSet(Id from, Id to) return a subset of this set, consisting of the member ids in a given range
IdSet	subSet(IdRange range) return a subset of this set, consisting of the member ids in a given range
java.lang.String	toString() Returns a string representation of the IdSet.

Methods inherited from class java.lang.Object

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

Constructor Detail

FragmentKeySet

public FragmentKeySet()

Constructor.

FragmentKeySet

public FragmentKeySet(FragmentKeySet o)

Copy constructor. constructs a shallow copy of the given IdSet o.

Parameters:

o - the IdSet to copy

FragmentKeySet

protected FragmentKeySet(java.util.SortedMap s)

Constructor. constructs a shallow copy of the given TreeSet s.

Parameters:

s - the TreeSet based on which we construct a new IdSet

Method Detail

isMember

public boolean isMember(Id id)

test membership

Parameters:

id - the id to test

Returns:

true of id is a member, false otherwise

getIterator

public java.util.Iterator getIterator()

return an iterator over the elements of this set

Specified by:

getIterator in interface IdSet

Returns:

the interator

getHash

public byte[] getHash()

compute a fingerprint of the members in this IdSet

Returns:

an Id containing the secure hash of this set

isMemberId

public boolean isMemberId(Id id)

test membership

Specified by:

isMemberId in interface IdSet

Parameters:

id - the id to test

Returns:

true of id is a member, false otherwise

numElements

public int numElements()

return the number of elements

Specified by:

numElements in interface IdSet

Returns:

DESCRIBE THE RETURN VALUE

addMember

public void addMember(Id id)

add a member

Parameters:

id - the id to add

removeMember

public void removeMember(Id id)

remove a member

Parameters:

id - the id to remove

minMember

public FragmentKey minMember()

return the smallest member id

Returns:

the smallest id in the set

maxMember

public FragmentKey maxMember()

return the largest member id

Returns:

the largest id in the set

subSet

public FragmentKeySet subSet(Id from,
                             Id to)

return a subset of this set, consisting of the member ids in a given range

Parameters:

from - the counterclockwise end of the range (inclusive)

to - the clockwise end of the range (exclusive)

Returns:

the subset

subSet

public FragmentKeySet subSet(FragmentKeyRange range)

return a subset of this set, consisting of the member ids in a given range

Parameters:

range - the range

Returns:

the subset

toString

public java.lang.String toString()

Returns a string representation of the IdSet.

Overrides:

toString in class java.lang.Object

Returns:

DESCRIBE THE RETURN VALUE

addId

public void addId(Id id)

add a member

Specified by:

addId in interface IdSet

Parameters:

id - the id to add

removeId

public void removeId(Id id)

remove a member

Specified by:

removeId in interface IdSet

Parameters:

id - the id to remove

subSet

public IdSet subSet(IdRange range)

return a subset of this set, consisting of the member ids in a given range

Specified by:

subSet in interface IdSet

Parameters:

range - DESCRIBE THE PARAMETER

Returns:

the subset

hash

public byte[] hash()

return a hash of this set

Specified by:

hash in interface IdSet

Returns:

the hash of this set

clone

public java.lang.Object clone()

DESCRIBE THE METHOD

Specified by:

clone in interface IdSet

Overrides:

clone in class java.lang.Object

Returns:

DESCRIBE THE RETURN VALUE

build

public IdSet build()

Returns a new, empty IdSet of this type

Specified by:

build in interface IdSet

Returns:

A new IdSet

asArray

public Id[] asArray()

return this set as an array

Specified by:

asArray in interface IdSet

Returns:

the array