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| java.lang.Object
 com.opensymphony.oscache.util.FastCronParser
| FastCronParser | | public class FastCronParser (Code) | | Parses cron expressions and determines at what time in the past is the
most recent match for the supplied expression.
author:
Chris Miller
author:
$Author: ltorunski $
version:
$Revision: 340 $ |
| Constructor Summary | |
| public | FastCronParser()
Creates a FastCronParser that uses a default cron expression of "* * * * *". | | public | FastCronParser(String cronExpression)
Constructs a new FastCronParser based on the supplied expression. |
| Method Summary | |
| public String | getCronExpression()
Retrieves the current cron expression. | | public String | getExpressionSummary()
Recreates the original human-readable cron expression based on the internal
datastructure values. | | public long | getTimeBefore(long time)
Find the most recent time that matches this cron expression. | | public boolean | hasMoreRecentMatch(long time)
Determines whether this cron expression matches a date/time that is more recent
than the one supplied.
Parameters:
time - The time to compare the cron expression against. | | public void | setCronExpression(String cronExpression)
Resets the cron expression to the value supplied. |
| FastCronParser | | public FastCronParser()(Code) | | Creates a FastCronParser that uses a default cron expression of "* * * * *".
This will match any time that is supplied.
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| FastCronParser | | public FastCronParser(String cronExpression) throws ParseException(Code) | | Constructs a new FastCronParser based on the supplied expression.
throws:
ParseException - if the supplied expression is not a valid cron expression. |
| getCronExpression | | public String getCronExpression()(Code) | | Retrieves the current cron expression.
the current cron expression. |
| getExpressionSummary | | public String getExpressionSummary()(Code) | | Recreates the original human-readable cron expression based on the internal
datastructure values.
A cron expression that corresponds to the current state of theinternal data structure. |
| getTimeBefore | | public long getTimeBefore(long time)(Code) | | Find the most recent time that matches this cron expression. This time will
always be in the past, ie a lower value than the supplied time.
Parameters:
time - The time (in milliseconds) that we're using as our upper bound. The time (in milliseconds) when this cron event last occurred. |
| hasMoreRecentMatch | | public boolean hasMoreRecentMatch(long time)(Code) | | Determines whether this cron expression matches a date/time that is more recent
than the one supplied.
Parameters:
time - The time to compare the cron expression against. true if the cron expression matches a time that is closerto the current time than the supplied time is, false otherwise. |
| setCronExpression | | public void setCronExpression(String cronExpression) throws ParseException(Code) | | Resets the cron expression to the value supplied.
Parameters:
cronExpression - the new cron expression.
throws:
ParseException - if the supplied expression is not a valid cron expression. |
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