org.apache.iotdb.db.utils.datastructure

类 FixedPriorityBlockingQueue<T>

java.lang.Object

org.apache.iotdb.db.utils.datastructure.FixedPriorityBlockingQueue<T>

public class FixedPriorityBlockingQueue<T>
extends Object

This is a priority blocking queue with a maximum size. If the queue's size is larger than the max size, the element with max priority will be kick out.

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	FixedPriorityBlockingQueue.PollLastHook<T>

构造器概要

构造器

构造器和说明
FixedPriorityBlockingQueue(int maxSize, Comparator<T> comparator)

方法概要

限定符和类型	方法和说明
void	clear()
boolean	contains(T element)
Comparator<T>	getComparator()
int	getMaxSize()
boolean	isEmpty()
void	put(T element)
void	regsitPollLastHook(FixedPriorityBlockingQueue.PollLastHook<T> hook) Add a hook for this queue.
int	size()
T	take() Return the element with min priority.
T	takeMax() Return the element with max priority.
String	toString()

从类继承的方法 java.lang.Object

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

构造器详细资料

FixedPriorityBlockingQueue

public FixedPriorityBlockingQueue(int maxSize,
                                  Comparator<T> comparator)

方法详细资料

put

public void put(T element)
         throws InterruptedException

抛出:

InterruptedException

take

public T take()
       throws InterruptedException

Return the element with min priority. If the queue is empty, the thread will be blocked util there are some elements inserted into the queue.

返回:

抛出:

InterruptedException

takeMax

public T takeMax()
          throws InterruptedException

Return the element with max priority. If the queue is empty, the thread will be blocked util there are some elements inserted into the queue.

返回:

抛出:

InterruptedException

regsitPollLastHook

public void regsitPollLastHook(FixedPriorityBlockingQueue.PollLastHook<T> hook)

Add a hook for this queue. If an element is kicked out because the queue's size exceed the largest value, the hook will apply to this element. Notice, multiple hooks can be added to a queue, and all of them will be applied to the element kicked out. The order in which they are applied depends on the order in which they were registered.

参数:

hook -

contains

public boolean contains(T element)

size

public int size()

clear

public void clear()

isEmpty

public boolean isEmpty()

getComparator

public Comparator<T> getComparator()

getMaxSize

public int getMaxSize()

toString

public String toString()

覆盖:

toString 在类中 Object