org.snmp4j.agent.mo.lock

Class DefaultMOLockStrategy

java.lang.Object

org.snmp4j.agent.mo.lock.DefaultMOLockStrategy

All Implemented Interfaces:

MOLockStrategy

public class DefaultMOLockStrategy
extends Object
implements MOLockStrategy

The DefaultMOLockStrategy implements a simple default locking strategy that requires a lock if a write access on a ManagedObject is intended or if the managed object accessed is an instance of UpdatableManagedObject. A managed object server that uses this lock strategy ensures that two concurrently received SET requests will not modify the same managed object at the same time with probably undefined result. In addition, managed objects that need to be updated regularly are protected against access while

Since:

2.4.0

Author:

Frank Fock

Constructor Summary

Constructors

Constructor and Description
DefaultMOLockStrategy()

Method Summary

Modifier and Type	Method and Description
boolean	isLockNeeded(ManagedObject managedObjectLookedUp, MOQuery query) Check if the server access to the provided managed object needs a lock.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultMOLockStrategy

public DefaultMOLockStrategy()

Method Detail

isLockNeeded

public boolean isLockNeeded(ManagedObject managedObjectLookedUp,
                            MOQuery query)

Description copied from interface: MOLockStrategy

Check if the server access to the provided managed object needs a lock.

Specified by:

isLockNeeded in interface MOLockStrategy

Parameters:

managedObjectLookedUp - the ManagedObject instance that is looked up and potentially accessed.

query - the query on which behalf the lookup took place. It also signals with MOQuery.isWriteAccessQuery() whether a write access is intended or not.

Returns:

true if a lock is required to access the provided managed object, false otherwise.