net.moznion.mysql.namelocker

Class NameLocker

java.lang.Object

net.moznion.mysql.namelocker.NameLocker

All Implemented Interfaces:

AutoCloseable

public class NameLocker
extends Object
implements AutoCloseable

MySQL named locker.

Author:

moznion

Constructor Summary

Constructors

Constructor and Description
NameLocker(Connection connection, String lockName) Get a named lock.
NameLocker(Connection connection, String lockName, int timeout) Get a named lock.

Method Summary

Modifier and Type	Method and Description
void	close()

Methods inherited from class java.lang.Object

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

Constructor Detail

NameLocker

public NameLocker(Connection connection,
                  String lockName)
           throws SQLException,
                  CannotObtainLockException,
                  AlreadyLockedException

Get a named lock.

This method does not wait for a timeout when getting a lock.

Parameters:

connection - MySQL connection

lockName - Name of lock

Throws:

SQLException - SQL is something wrong

CannotObtainLockException - Cannot obtain a lock by something error of MySQL

AlreadyLockedException - A lock has already taken by other client

NameLocker

public NameLocker(Connection connection,
                  String lockName,
                  int timeout)
           throws SQLException,
                  CannotObtainLockException,
                  AlreadyLockedException

Get a named lock.

Parameters:

connection - MySQL connection

lockName - Name of lock

timeout - Seconds for timeout

Throws:

SQLException - SQL is something wrong

CannotObtainLockException - Cannot obtain a lock by something error of MySQL

AlreadyLockedException - A lock has already taken by other client

Method Detail

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception