com.ds.common.util

类 TaskEngine

java.lang.Object

com.ds.common.util.TaskEngine

public class TaskEngine
extends Object

Title: 常用代码打包

Description: A class to manage the execution of tasks in the Jive system. A TaskEngine object accepts Runnable objects and queues them for execution by worker threads. Optionally, a priority may be assigned to each task. Tasks with a higher priority are taken from the queue first.

Copyright: Copyright (c) 2006

Company: www.justdos.net

版本:

1.0

作者:

wenzhang li

字段概要

字段

限定符和类型	字段和说明
static int	HIGH_PRIORITY
static int	LOW_PRIORITY
static int	MEDIUM_PRIORITY

方法概要

限定符和类型	方法和说明
static void	addTask(int priority, Runnable task) Adds a task to the task queue.
static void	addTask(Runnable task) Adds a task to the task queue.
static TimerTask	scheduleTask(int priority, Runnable task, Date date) Schedules a task to be run once after a specified delay.
static TimerTask	scheduleTask(int priority, Runnable task, long delay, long period) Schedules a task to periodically run.
static TimerTask	scheduleTask(Runnable task, Date date) Schedules a task to be run once after a specified delay.
static TimerTask	scheduleTask(Runnable task, long delay, long period) Schedules a task to periodically run.

从类继承的方法 java.lang.Object

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

字段详细资料

HIGH_PRIORITY

public static final int HIGH_PRIORITY

另请参阅:

常量字段值

MEDIUM_PRIORITY

public static final int MEDIUM_PRIORITY

另请参阅:

常量字段值

LOW_PRIORITY

public static final int LOW_PRIORITY

另请参阅:

常量字段值

方法详细资料

addTask

public static void addTask(Runnable task)

Adds a task to the task queue. The task will be executed immediately provided there is a free worker thread to execute it. Otherwise, it will execute as soon as a worker thread becomes available.

参数:

task - the task to execute

addTask

public static void addTask(int priority,
                           Runnable task)

Adds a task to the task queue. The task will be executed immediately provided there is a free worker thread to execute it. Otherwise, it will execute as soon as a worker thread becomes available.

参数:

priority - the priority of the task in the queue.

task - the task to execute

scheduleTask

public static TimerTask scheduleTask(Runnable task,
                                     Date date)

Schedules a task to be run once after a specified delay.

参数:

task - task to be scheduled.

date - the date in milliseconds at which the task is to be executed.

返回:

a TimerTask object which can be used to track execution of the task.

scheduleTask

public static TimerTask scheduleTask(int priority,
                                     Runnable task,
                                     Date date)

Schedules a task to be run once after a specified delay.

参数:

priority - the priority of the task in the queue.

task - task to be scheduled.

date - the date in milliseconds at which the task is to be executed.

返回:

a TimerTask object which can be used to track execution of the task.

scheduleTask

public static TimerTask scheduleTask(Runnable task,
                                     long delay,
                                     long period)

Schedules a task to periodically run. This is useful for tasks such as updating search indexes, deleting old data at periodic intervals, etc.

参数:

task - task to be scheduled.

delay - delay in milliseconds before task is to be executed.

period - time in milliseconds between successive task executions.

返回:

a TimerTask object which can be used to track executions of the task and to cancel subsequent executions.

scheduleTask

public static TimerTask scheduleTask(int priority,
                                     Runnable task,
                                     long delay,
                                     long period)

Schedules a task to periodically run. This is useful for tasks such as updating search indexes, deleting old data at periodic intervals, etc.

参数:

priority - the priority of the task in the queue.

task - task to be scheduled.

delay - delay in milliseconds before task is to be executed.

period - time in milliseconds between successive task executions.

返回:

a TimerTask object which can be used to track executions of the task and to cancel subsequent executions.