org.apache.ambari.server.metadata

Class CachedRoleCommandOrderProvider

java.lang.Object

org.apache.ambari.server.metadata.CachedRoleCommandOrderProvider

All Implemented Interfaces:

RoleCommandOrderProvider

public class CachedRoleCommandOrderProvider
extends Object
implements RoleCommandOrderProvider

RoleCommandOrderProvider which caches RoleCommandOrder objects for a cluster to avoid the cost of construction of RoleCommandOrder objects each time.

Constructor Summary

Constructors

Constructor and Description
CachedRoleCommandOrderProvider()

Method Summary

Modifier and Type	Method and Description
void	clearRoleCommandOrderCache() Clear all entries - used after an upgrade
RoleCommandOrder	getRoleCommandOrder(Cluster cluster)
RoleCommandOrder	getRoleCommandOrder(Long clusterId)

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedRoleCommandOrderProvider

@Inject
public CachedRoleCommandOrderProvider()

Method Detail

getRoleCommandOrder

public RoleCommandOrder getRoleCommandOrder(Long clusterId)

Specified by:

getRoleCommandOrder in interface RoleCommandOrderProvider

getRoleCommandOrder

public RoleCommandOrder getRoleCommandOrder(Cluster cluster)

Specified by:

getRoleCommandOrder in interface RoleCommandOrderProvider

clearRoleCommandOrderCache

public void clearRoleCommandOrderCache()

Clear all entries - used after an upgrade