org.mapdb
Class Queues.SimpleQueue<E>

java.lang.Object
  org.mapdb.Queues.SimpleQueue<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, BlockingQueue<E>, Queue<E>

Direct Known Subclasses:

Queues.CircularQueue, Queues.Queue, Queues.Stack

Enclosing class:

Queues

public abstract static class Queues.SimpleQueue<E>
extends Object
implements BlockingQueue<E>

Nested Class Summary

protected static class	Queues.SimpleQueue.Node<E>
protected static class	Queues.SimpleQueue.NodeSerializer<E>

Field Summary

protected Engine	engine
protected Atomic.Long	head
protected ReentrantLock[]	locks
protected Serializer<Queues.SimpleQueue.Node<E>>	nodeSerializer
protected Serializer<E>	serializer
protected static int	TICK
protected boolean	useLocks

Constructor Summary

Queues.SimpleQueue(Engine engine, Serializer<E> serializer, long headRecidRef, boolean useLocks)

Method Summary

boolean	addAll(Collection<? extends E> c)
void	clear()
void	close() Closes underlying storage and releases all resources.
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
int	drainTo(Collection<? super E> c)
int	drainTo(Collection<? super E> c, int maxElements)
E	element()
boolean	isEmpty()
Iterator<E>	iterator()
boolean	offer(E e)
boolean	offer(E e, long timeout, TimeUnit unit)
E	peek()
E	poll()
E	poll(long timeout, TimeUnit unit)
void	put(E e)
int	remainingCapacity()
E	remove()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
E	take()
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.BlockingQueue

add

Methods inherited from interface java.util.Collection

equals, hashCode

Field Detail

useLocks

protected final boolean useLocks

locks

protected final ReentrantLock[] locks

TICK

protected static final int TICK

See Also:

Constant Field Values

engine

protected final Engine engine

serializer

protected final Serializer<E> serializer

head

protected final Atomic.Long head

nodeSerializer

protected final Serializer<Queues.SimpleQueue.Node<E>> nodeSerializer

Constructor Detail

Queues.SimpleQueue

public Queues.SimpleQueue(Engine engine,
                          Serializer<E> serializer,
                          long headRecidRef,
                          boolean useLocks)

Method Detail

close

public void close()

Closes underlying storage and releases all resources. Used mostly with temporary collections where engine is not accessible.

peek

public E peek()

Specified by:

peek in interface Queue<E>

poll

public E poll()

Specified by:

poll in interface Queue<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

remove

public E remove()

Specified by:

remove in interface Queue<E>

element

public E element()

Specified by:

element in interface Queue<E>

offer

public boolean offer(E e)

Specified by:

offer in interface BlockingQueue<E>

Specified by:

offer in interface Queue<E>

put

public void put(E e)
         throws InterruptedException

Specified by:

put in interface BlockingQueue<E>

Throws:

InterruptedException

offer

public boolean offer(E e,
                     long timeout,
                     TimeUnit unit)
              throws InterruptedException

Specified by:

offer in interface BlockingQueue<E>

Throws:

InterruptedException

take

public E take()
       throws InterruptedException

Specified by:

take in interface BlockingQueue<E>

Throws:

InterruptedException

poll

public E poll(long timeout,
              TimeUnit unit)
       throws InterruptedException

Specified by:

poll in interface BlockingQueue<E>

Throws:

InterruptedException

drainTo

public int drainTo(Collection<? super E> c)

Specified by:

drainTo in interface BlockingQueue<E>

drainTo

public int drainTo(Collection<? super E> c,
                   int maxElements)

Specified by:

drainTo in interface BlockingQueue<E>

remainingCapacity

public int remainingCapacity()

Specified by:

remainingCapacity in interface BlockingQueue<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

size

public int size()

Specified by:

size in interface Collection<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface BlockingQueue<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Collection<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface BlockingQueue<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

addAll

public boolean addAll(Collection<? extends E> c)

Specified by:

addAll in interface Collection<E>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>