org.nanoframework.concurrent.scheduler

类 CronExpression

java.lang.Object

org.nanoframework.concurrent.scheduler.CronExpression

所有已实现的接口:

Serializable, Cloneable

public final class CronExpression
extends Object
implements Serializable, Cloneable

作者:

Sharada Jambula, James House, Contributions from Mads Henderson, Refactoring from CronTrigger to CronExpression by Aaron Craven

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
static int	MAX_YEAR

构造器概要

构造器

构造器和说明
CronExpression(CronExpression expression) Constructs a new CronExpression as a copy of an existing instance.
CronExpression(String cronExpression) Constructs a new CronExpression based on the specified parameter.

方法概要

限定符和类型	方法和说明
Object	clone() 已过时。
String	getCronExpression()
String	getExpressionSummary()
Date	getFinalFireTime() NOT YET IMPLEMENTED: Returns the final time that the CronExpression will match.
Date	getNextInvalidTimeAfter(Date date) Returns the next date/time after the given date/time which does not satisfy the expression
Date	getNextValidTimeAfter(Date date) Returns the next date/time after the given date/time which satisfies the cron expression.
Date	getTimeAfter(Date afterTime)
Date	getTimeBefore(Date endTime) NOT YET IMPLEMENTED: Returns the time before the given time that the CronExpression matches.
TimeZone	getTimeZone()
boolean	isSatisfiedBy(Date date) Indicates whether the given date satisfies the cron expression.
static boolean	isValidExpression(String cronExpression) Indicates whether the specified cron expression can be parsed into a valid cron expression
void	setTimeZone(TimeZone timeZone) Sets the time zone for which this CronExpression will be resolved.
String	toString() Returns the string representation of the CronExpression
static void	validateExpression(String cronExpression)

从类继承的方法 java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

字段详细资料

MAX_YEAR

public static final int MAX_YEAR

构造器详细资料

CronExpression

public CronExpression(String cronExpression)
               throws ParseException

Constructs a new CronExpression based on the specified parameter.

参数:

cronExpression - String representation of the cron expression the new object should represent

抛出:

ParseException - if the string expression cannot be parsed into a valid CronExpression

CronExpression

public CronExpression(CronExpression expression)

Constructs a new CronExpression as a copy of an existing instance.

参数:

expression - The existing cron expression to be copied

方法详细资料

isSatisfiedBy

public boolean isSatisfiedBy(Date date)

Indicates whether the given date satisfies the cron expression. Note that milliseconds are ignored, so two Dates falling on different milliseconds of the same second will always have the same result here.

参数:

date - the date to evaluate

返回:

a boolean indicating whether the given date satisfies the cron expression

getNextValidTimeAfter

public Date getNextValidTimeAfter(Date date)

Returns the next date/time after the given date/time which satisfies the cron expression.

参数:

date - the date/time at which to begin the search for the next valid date/time

返回:

the next valid date/time

getNextInvalidTimeAfter

public Date getNextInvalidTimeAfter(Date date)

Returns the next date/time after the given date/time which does not satisfy the expression

参数:

date - the date/time at which to begin the search for the next invalid date/time

返回:

the next valid date/time

getTimeZone

public TimeZone getTimeZone()

返回:

Returns the time zone for which this CronExpression will be resolved.

setTimeZone

public void setTimeZone(TimeZone timeZone)

Sets the time zone for which this CronExpression will be resolved.

参数:

timeZone - the timeZone

toString

public String toString()

Returns the string representation of the CronExpression

覆盖:

toString 在类中 Object

返回:

a string representation of the CronExpression

isValidExpression

public static boolean isValidExpression(String cronExpression)

Indicates whether the specified cron expression can be parsed into a valid cron expression

参数:

cronExpression - the expression to evaluate

返回:

a boolean indicating whether the given expression is a valid cron expression

validateExpression

public static void validateExpression(String cronExpression)
                               throws ParseException

抛出:

ParseException

getCronExpression

public String getCronExpression()

getExpressionSummary

public String getExpressionSummary()

getTimeAfter

public Date getTimeAfter(Date afterTime)

getTimeBefore

public Date getTimeBefore(Date endTime)

NOT YET IMPLEMENTED: Returns the time before the given time that the CronExpression matches.

参数:

endTime - the endTime

返回:

Returns the time before the given time that the CronExpression matches.

getFinalFireTime

public Date getFinalFireTime()

NOT YET IMPLEMENTED: Returns the final time that the CronExpression will match.

返回:

Returns the final time that the CronExpression will match

clone

@Deprecated
public Object clone()

已过时。

覆盖:

clone 在类中 Object