com.caucho.db.lock
Class DatabaseLock

java.lang.Object
  com.caucho.db.lock.DatabaseLock

All Implemented Interfaces:

java.util.concurrent.locks.ReadWriteLock

public final class DatabaseLock
extends java.lang.Object
implements java.util.concurrent.locks.ReadWriteLock

Locking for tables/etc.

Constructor Summary

DatabaseLock(java.lang.String id)

Method Summary

void	lockRead(long timeout) Tries to get a read lock.
void	lockWrite(long timeout) Attempts to get an exclusive write lock.
java.util.concurrent.locks.Lock	readLock()
java.lang.String	toString()
void	unlockRead()
void	unlockWrite() Unlocks the write
java.util.concurrent.locks.Lock	writeLock()

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseLock

public DatabaseLock(java.lang.String id)

Method Detail

readLock

public java.util.concurrent.locks.Lock readLock()

Specified by:

readLock in interface java.util.concurrent.locks.ReadWriteLock

writeLock

public java.util.concurrent.locks.Lock writeLock()

Specified by:

writeLock in interface java.util.concurrent.locks.ReadWriteLock

lockRead

public void lockRead(long timeout)
              throws LockTimeoutException

Tries to get a read lock.

Parameters:

timeout - how long to wait for a timeout

Throws:

LockTimeoutException

lockWrite

public void lockWrite(long timeout)

Attempts to get an exclusive write lock.

unlockRead

public void unlockRead()

unlockWrite

public void unlockWrite()

Unlocks the write

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object