org.geotools.data
Class Lock

java.lang.Object
  |
  +--org.geotools.data.Lock

public class Lock

extends java.lang.Object

Used to Lock features for long transaction operations.

This class is responsible for supplying a unique ID for TransactionDataSource locking operations.

Example:

 Lock lock = Lock.create( 1800 ); // expire in 18 min
 

Although it is tempting to have these Lock objects stored in a static repository in the manner of GeoServer's TypeRepository.InternalLock - that decision should be left to the individual DataSources.

An AbstractTransactionalDataSource with appropriate overrideable callbacks may be an elegent way to acomplish this for.

Field Summary

private static int	count
private java.util.Date	date
private java.lang.String	id

Constructor Summary

private

Lock(java.lang.String id, java.util.Date date) Private constructor - use create factory method

Method Summary

static Lock	create(int expire) Create a Lock for use.
long	getExpire() Time from now the lock will expire
java.lang.String	getID() LockId used for transaction authorization.
private static int	nextIdNumber()

Methods inherited from class java.lang.Object

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

Field Detail

id

private final java.lang.String id

date

private final java.util.Date date

count

private static int count

Constructor Detail

Lock

private Lock(java.lang.String id,
             java.util.Date date)

Private constructor - use create factory method

Method Detail

getID

public java.lang.String getID()

LockId used for transaction authorization.

getExpire

public long getExpire()

Time from now the lock will expire

create

public static Lock create(int expire)

Create a Lock for use.

Parameters:

expire - Time from now that the lock will expire.

nextIdNumber

private static int nextIdNumber()