org.jboss.cache.lock
Class LockStrategyReadCommitted

java.lang.Object
  org.jboss.cache.lock.LockStrategyReadCommitted

All Implemented Interfaces:

LockStrategy (src)

public class LockStrategyReadCommitted

extends java.lang.Object

implements LockStrategy (src)

Transaction isolation level of READ_COMMITTED. Similar to read/write lock, but writers are not blocked on readers It prevents dirty read only.

Dirty read allows (t1) write and then (t2) read within two separate threads, all without transaction commit.

LockStrategyReadCommitted

public LockStrategyReadCommitted()

readLock

public Sync readLock()

Description copied from interface: LockStrategy (src)

Return a read lock object.

Specified by:

readLock in interface LockStrategy (src)

Returns:

Sync (@see EDU.oswego.cs.dl.util.concurrent.Sync)

See Also:

LockStrategy.readLock()

upgradeLockAttempt

public Sync upgradeLockAttempt(long msecs)
                        throws UpgradeException (src) 

Description copied from interface: LockStrategy (src)

Attempt to upgrade the current read lock to write lock with msecs timeout.

Specified by:

upgradeLockAttempt in interface LockStrategy (src)

Parameters:

msecs - Timeout in milliseconds.

Returns:

Sync object. Will return null if timeout or failed.

Throws:

UpgradeException (src)

See Also:

LockStrategy.upgradeLockAttempt(long)

writeLock

public Sync writeLock()

Description copied from interface: LockStrategy (src)

Return a write lock object.

Specified by:

writeLock in interface LockStrategy (src)

Returns:

Sync (@see EDU.oswego.cs.dl.util.concurrent.Sync)

See Also:

LockStrategy.writeLock()