org.infinispan.distribution.ch
Class DefaultConsistentHash

java.lang.Object
  org.infinispan.distribution.ch.AbstractConsistentHash
      org.infinispan.distribution.ch.AbstractWheelConsistentHash
          org.infinispan.distribution.ch.DefaultConsistentHash

All Implemented Interfaces:

ConsistentHash

public class DefaultConsistentHash
extends AbstractWheelConsistentHash

Nested Class Summary

static class

DefaultConsistentHash.Externalizer

Field Summary

Fields inherited from class org.infinispan.distribution.ch.AbstractWheelConsistentHash

caches, hashFunction, log, numVirtualNodes, positionKeys, positionValues, trace

Fields inherited from class org.infinispan.distribution.ch.AbstractConsistentHash

groupManager

Constructor Summary

DefaultConsistentHash()

DefaultConsistentHash(Hash hash)

Method Summary

boolean	equals(Object o)
int	hashCode()
boolean	isKeyLocalToAddress(Address target, Object key, int replCount) Test to see whether a key is mapped to a given address.
List<Address>	locate(Object key, int replCount) Locates a key, given a replication count (number of copies).

Methods inherited from class org.infinispan.distribution.ch.AbstractWheelConsistentHash

getCaches, getHashIds, getNormalizedHash, getPositionIndex, getPositionsIterator, isVirtualNodesEnabled, setCaches, setHashFunction, setNumVirtualNodes, toString

Methods inherited from class org.infinispan.distribution.ch.AbstractConsistentHash

getBackupsForNode, getGrouping, getStateProvidersOnJoin, getStateProvidersOnLeave, locateAll, setGroupManager

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultConsistentHash

public DefaultConsistentHash()

DefaultConsistentHash

public DefaultConsistentHash(Hash hash)

Method Detail

locate

public List<Address> locate(Object key,
                            int replCount)

Description copied from interface: ConsistentHash

Locates a key, given a replication count (number of copies).

Parameters:

key - key to locate

replCount - replication count (number of copies)

Returns:

a list of addresses where the key resides, where this list is a subset of the addresses set in ConsistentHash.setCaches(java.util.Set). Should never be null, and should contain replCount elements or the max number of caches available, whichever is smaller.

isKeyLocalToAddress

public boolean isKeyLocalToAddress(Address target,
                                   Object key,
                                   int replCount)

Description copied from interface: ConsistentHash

Test to see whether a key is mapped to a given address.

Specified by:

isKeyLocalToAddress in interface ConsistentHash

Overrides:

isKeyLocalToAddress in class AbstractConsistentHash

Parameters:

target - address to test

key - key to test

replCount - repl count

Returns:

true if the key is mapped to the address; false otherwise

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object