org.geotools.data
Class DefaultFeatureLock

java.lang.Object
  org.geotools.data.DefaultFeatureLock

All Implemented Interfaces:

FeatureLock

public class DefaultFeatureLock

extends java.lang.Object

implements FeatureLock

Used to lock features when used with LockingDataSource.

This class is responsible for supplying a unique Authorization ID and expirery date for LockingDataSource locking operations.

Example:

 FeatureLock lock1 = FeatureLockFactory.generate( 18*60*60 ); // expire in 18 min
 FeatureLock lock3 = FeatureLockFactory.generate( "MyLock", 30*60*60 ); // expire in 30 min
 

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

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

Author:

jgarnett, Refractions Research, Inc.

See Also:

http://vwfs.refractions.net/docs/Database_Research.pdf, http://vwfs.refractions.net/docs/Transactional_WFS_Design.pdf, http://vwfs.refractions.net/docs/Design_Implications.pdf

Field Summary

Fields inherited from interface org.geotools.data.FeatureLock

TRANSACTION

Method Summary

java.lang.String	getAuthorization() LockId used for transaction authorization.
long	getDuration() Time from now the lock will expire

Methods inherited from class java.lang.Object

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

Method Detail

getAuthorization

public java.lang.String getAuthorization()

LockId used for transaction authorization.

Specified by:

getAuthorization in interface FeatureLock

Returns:

A string of the LockId.

getDuration

public long getDuration()

Time from now the lock will expire

Specified by:

getDuration in interface FeatureLock

Returns:

A long of the time till the lock expires.