org.entityfs.util.itr
Class OptimisticLockingDepthLastIterator

java.lang.Object
  org.entityfs.util.itr.AbstractLockingIterator
      org.entityfs.util.itr.OptimisticLockingDepthLastIterator

All Implemented Interfaces:

Iterator<EntityView>, DepthLastIterator<EntityView>, LockingDepthLastIterator<EntityView>, LockingIterator<EntityView>

public class OptimisticLockingDepthLastIterator
extends AbstractLockingIterator
implements LockingDepthLastIterator<EntityView>

This is a depth-last iterator (i.e. a breadth-first iterator) that will lock returned entities optimistically. Optimistic locking means that the entities will be locked as they are returned from the iterator.

Use AbstractLockingIterator.unlock(EntityView) and/or AbstractLockingIterator.unlockAll() to unlock the returned entities. See LockingIterator.

This class should have been named OptimisticLockingBreadthFirstIterator...

EntityFS iterators are not thread safe. Don't use them concurrently from several threads without synchronizing access to them.

Since:

1.0

Author:

Karl Gustafsson

See Also:

PessimisticLockingDepthFirstIterator, PessimisticLockingDepthLastIterator

In_jar:

entityfs-util

Constructor Summary

OptimisticLockingDepthLastIterator(DirectoryView dv)

OptimisticLockingDepthLastIterator(DirectoryView dv, boolean writeLock)

OptimisticLockingDepthLastIterator(DirectoryView dv, boolean writeLock, Filter<? super EntityView> filter)

Method Summary

boolean	hasNext()
EntityView	next()
void	remove()

Methods inherited from class org.entityfs.util.itr.AbstractLockingIterator

assertNotUnlocked, lock, unlock, unlockAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.entityfs.util.itr.LockingIterator

unlock, unlockAll

Constructor Detail

OptimisticLockingDepthLastIterator

public OptimisticLockingDepthLastIterator(DirectoryView dv)

OptimisticLockingDepthLastIterator

public OptimisticLockingDepthLastIterator(DirectoryView dv,
                                          boolean writeLock)

OptimisticLockingDepthLastIterator

public OptimisticLockingDepthLastIterator(DirectoryView dv,
                                          boolean writeLock,
                                          Filter<? super EntityView> filter)

Method Detail

next

public EntityView next()

Specified by:

next in interface Iterator<EntityView>

remove

public void remove()

Specified by:

remove in interface Iterator<EntityView>

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<EntityView>