org.terracotta.locking.strategy
Class HashcodeLockStrategy

java.lang.Object
  org.terracotta.locking.strategy.BasicLockStrategy<Object>
      org.terracotta.locking.strategy.HashcodeLockStrategy

All Implemented Interfaces:

GenericLockStrategy<String,Object>, LockStrategy<Object>

public class HashcodeLockStrategy
extends BasicLockStrategy<Object>

A simple lock strategy where locks are taken on a concatentation of the instance qualifier and the key's hashcode.

Constructor Summary

HashcodeLockStrategy()

Method Summary

String

generateLockIdForKey(String instanceQualifier, Object key) Generate the lock identifier to be used when performing operations for the given key.

Methods inherited from class org.terracotta.locking.strategy.BasicLockStrategy

beginLock, commitLock, pinLock, tryBeginLock, unpinLock

Methods inherited from class java.lang.Object

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

Constructor Detail

HashcodeLockStrategy

public HashcodeLockStrategy()

Method Detail

generateLockIdForKey

public String generateLockIdForKey(String instanceQualifier,
                                   Object key)

Description copied from interface: LockStrategy

Generate the lock identifier to be used when performing operations for the given key.

To prevent inter-map lock collisions the instanceQualifier provided by the caller should be used to form the key.

Parameters:

instanceQualifier - A unique identifier for the map being operated on.

key - key to be locked

Returns:

lock identifier