org.batoo.jpa.core.impl.model

Class IdQueue

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractQueue<E>

java.util.concurrent.LinkedBlockingQueue<Long>

org.batoo.jpa.core.impl.model.IdQueue

All Implemented Interfaces:

Serializable, Iterable<Long>, Collection<Long>, BlockingQueue<Long>, Queue<Long>

Direct Known Subclasses:

SequenceQueue, TableIdQueue

public abstract class IdQueue
extends LinkedBlockingQueue<Long>

Since:

2.0.0

Author:

hceylan

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IdQueue(ExecutorService idExecuter, String name, int allocationSize)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	doTopUp(Runnable runnable) Tops up the queue.
protected abstract Long	getNextId() Returns the next value from the database.
Long	poll(long timeout, TimeUnit unit)

Methods inherited from class java.util.concurrent.LinkedBlockingQueue

clear, contains, drainTo, drainTo, iterator, offer, offer, peek, poll, put, remainingCapacity, remove, size, take, toArray, toArray, toString

Methods inherited from class java.util.AbstractQueue

add, addAll, element, remove

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, removeAll, retainAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.BlockingQueue

add

Methods inherited from interface java.util.Queue

element, remove

Methods inherited from interface java.util.Collection

addAll, containsAll, equals, hashCode, isEmpty, removeAll, retainAll

Constructor Detail

IdQueue

public IdQueue(ExecutorService idExecuter,
       String name,
       int allocationSize)

Parameters:

idExecuter - the executor service to submit refill tasks

name - the physical name of the sequence or pkvalue of the table

allocationSize - the allocations size

Since:

2.0.0

Method Detail

doTopUp

protected void doTopUp(Runnable runnable)

Tops up the queue.

Parameters:

runnable - the runnable to run to top-up

Since:

2.0.0

getNextId

protected abstract Long getNextId()
                           throws SQLException

Returns the next value from the database.

Returns:

the next id

Throws:

SQLException

Since:

2.0.0

poll

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

Specified by:

poll in interface BlockingQueue<Long>

Overrides:

poll in class LinkedBlockingQueue<Long>

Throws:

InterruptedException