com.jfw.scheduler
Class Scheduler

java.lang.Object
  com.jfw.scheduler.Scheduler

public final class Scheduler
extends java.lang.Object

The container of classes in scheduling.
Is a singleton, the instance is returned by method getInstance().

Field Summary

static java.lang.String	DESC_KEY Key used in scheduleList.
static java.lang.String	FREQUENCE_KEY Key used in scheduleList.
static java.lang.String	ID_KEY Key used in scheduleList.
static java.lang.String	THREAD_KEY Key used in scheduleList.

Method Summary

ScheduleThread	add(java.lang.String scheduledBean, java.lang.String frequence, java.lang.String description, java.lang.String id) Add a scheduled bean.
java.util.ArrayList	getErrors() Get a clone of attribute errors.
static Scheduler	getInstance() Return attribute instance.
java.util.Set	getScheduleList() Get a Set object with keys of scheduleList.
ScheduleThread	getScheduleThread(java.lang.String scheduleBean) Get the thread who execute a scheduled bean.
java.util.HashMap	getScheduleThreadAttributes(java.lang.String scheduleBean) Get all parameters of a scheduled bean.
void	remove(java.lang.String scheduledBean) Remove a scheduled bean from scheduler.
void	removeAll() Remove alla scheduled beans from scheduler.

Methods inherited from class java.lang.Object

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

Field Detail

FREQUENCE_KEY

public static final java.lang.String FREQUENCE_KEY

Key used in scheduleList.

See Also:

Constant Field Values

DESC_KEY

public static final java.lang.String DESC_KEY

Key used in scheduleList.

See Also:

Constant Field Values

ID_KEY

public static final java.lang.String ID_KEY

Key used in scheduleList.

See Also:

Constant Field Values

THREAD_KEY

public static final java.lang.String THREAD_KEY

Key used in scheduleList.

See Also:

Constant Field Values

Method Detail

getInstance

public static Scheduler getInstance()

Return attribute instance.

Returns:

the only instance of the class.

add

public ScheduleThread add(java.lang.String scheduledBean,
                          java.lang.String frequence,
                          java.lang.String description,
                          java.lang.String id)

Add a scheduled bean. Sceduled beans must be of type ScheduleBean.

Parameters:

scheduledBean - the class name of scheduled bean.

frequence - execution frequence.

description - description of scheduled bean.

id - the id of the scheduled bean.

Returns:

a ScheduleThread object.

remove

public void remove(java.lang.String scheduledBean)

Remove a scheduled bean from scheduler.

Parameters:

scheduledBean - the class name of scheduled bean; is the name of the class plus the id.

removeAll

public void removeAll()

Remove alla scheduled beans from scheduler.

getScheduleList

public java.util.Set getScheduleList()

Get a Set object with keys of scheduleList.

Returns:

a Set object with keys of scheduleList.

getScheduleThreadAttributes

public java.util.HashMap getScheduleThreadAttributes(java.lang.String scheduleBean)

Get all parameters of a scheduled bean.

Returns:

parameters of a scheduled bean. This is the HashMap added in scheduleList.

getScheduleThread

public ScheduleThread getScheduleThread(java.lang.String scheduleBean)

Get the thread who execute a scheduled bean.

Parameters:

scheduleBean - the class name of the scheduled bean.

Returns:

a ScheduleThread object.

getErrors

public java.util.ArrayList getErrors()

Get a clone of attribute errors.

Returns:

a clone of attribute errors.