org.entityfs.util.itr
Class AbstractPessimisticLockingIterator

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

All Implemented Interfaces:

Iterator<EntityView>, LockingIterator<EntityView>

Direct Known Subclasses:

PessimisticLockingDepthFirstIterator, PessimisticLockingDepthLastIterator

public abstract class AbstractPessimisticLockingIterator
extends AbstractLockingIterator
implements LockingIterator<EntityView>

An abstract base class for pessimistic locking iterators. Locks are always acquired depth last.

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

Constructor Summary

protected

AbstractPessimisticLockingIterator(DirectoryView dv, boolean writeLock, boolean depthLast, 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

AbstractPessimisticLockingIterator

protected AbstractPessimisticLockingIterator(DirectoryView dv,
                                             boolean writeLock,
                                             boolean depthLast,
                                             Filter<? super EntityView> filter)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<EntityView>

next

public EntityView next()

Specified by:

next in interface Iterator<EntityView>

remove

public void remove()

Specified by:

remove in interface Iterator<EntityView>