org.jboss.ha.framework.interfaces
Class ClusteringTargetsRepository

java.lang.Object
  org.jboss.ha.framework.interfaces.ClusteringTargetsRepository

public class ClusteringTargetsRepository
extends Object

JVM singleton that associates a list of targets (+ other info) contained in a FamilyClusterInfo to a proxy family. For example, all remote proxies for a given EJB in a given cluster are part of the same proxy family. Note that home and remote for a same EJB form *2* proxy families.

Version:

$Revision: 74878 $

Revisions:

2002/08/23, Sacha Labourey:

• First implementation

Author:

Sacha Labourey.

See Also:

FamilyClusterInfo, FamilyClusterInfoImpl

Field Summary

protected static Hashtable

families

Method Summary

static FamilyClusterInfo	getFamilyClusterInfo(String familyName) Gets the FamilyClusterInfo registered under familyName.
static FamilyClusterInfo	initTarget(String familyName, List targets) Same as initTarget(familyName, targets, 0L)
static FamilyClusterInfo	initTarget(String familyName, List targets, long viewId) Checks for the existence of a FamilyClusterInfo with the given name.

Methods inherited from class java.lang.Object

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

Field Detail

families

protected static Hashtable families

Method Detail

initTarget

public static FamilyClusterInfo initTarget(String familyName,
                                           List targets)

Same as initTarget(familyName, targets, 0L)

initTarget

public static FamilyClusterInfo initTarget(String familyName,
                                           List targets,
                                           long viewId)

Checks for the existence of a FamilyClusterInfo with the given name. If found, updates it; otherwise creates and caches a new FamilyClusterInfo.

This method must be synchronized to avoid race conditions leading to multiple FamilyClusterInfo instances for the same familyName.

Parameters:

familyName - the name of the proxy family

targets - the current list of targets for the proxy family

viewId - long that can be used as a shorthand identifier for the list of targets

Returns:

a FamilyClusterInfo encapsulating the current state of the familyName.

getFamilyClusterInfo

public static FamilyClusterInfo getFamilyClusterInfo(String familyName)

Gets the FamilyClusterInfo registered under familyName.

Parameters:

familyName - the identifier of the FamilyClusterInfo

Returns:

the FamilyClusterInfo, or null if none is registered