de.ipcon.db

Class ExecutionPolicyCron

java.lang.Object

java.lang.Thread

de.ipcon.db.ExecutionPolicyCron

All Implemented Interfaces:

java.lang.Runnable

public class ExecutionPolicyCron
extends java.lang.Thread

Helper class used by ExecutionPolicyCronJob to handle several scheduled executions for one service. In essence, provides PriorityQueue functionality to detect the next execution time and calls the CronJob at this time. Is running in its own thread, allowing an executed service to be interrupted with a later scheduled execution (see interrupt parameter).

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
int	stopme

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
ExecutionPolicyCron()

Method Summary

Modifier and Type	Method and Description
static void	checkCronThread(boolean killcron)
static java.lang.String	createCronline(java.util.Date from, boolean minute, boolean hour, boolean day, boolean month, boolean dow)
static boolean	isMatching(java.lang.String cronline, java.util.Date d)
static boolean	matches(netrexx.lang.Rexx check, netrexx.lang.Rexx currentValue, int maxVal, int minVal) Called by the built-in cron to find out if an entry matches now.
static boolean	matchesLastOf(netrexx.lang.Rexx what, netrexx.lang.Rexx dows, netrexx.lang.Rexx currDow, netrexx.lang.Rexx actualDay, netrexx.lang.Rexx maxDays)
static java.lang.String	parseSpecial(java.lang.String cronline) Parse based on man crontab 5
void	run()
static void	sleep(int n)

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

stopme

public volatile int stopme

Constructor Detail

ExecutionPolicyCron

public ExecutionPolicyCron()

Method Detail

run

public void run()

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

parseSpecial

public static java.lang.String parseSpecial(java.lang.String cronline)

Parse based on man crontab 5

isMatching

public static boolean isMatching(java.lang.String cronline,
                                 java.util.Date d)

matches

public static boolean matches(netrexx.lang.Rexx check,
                              netrexx.lang.Rexx currentValue,
                              int maxVal,
                              int minVal)

Called by the built-in cron to find out if an entry matches now. Typically this is *, a comma-separated list or a range specification or all mixed.

Parameters:

check - the entry from the crontab

currentValue - the present value

maxVal - used to determine the given value for 'wann' to be invalid (such as 'minute 71', which will likely just never match) - a warning is logged for debugging if such a value comes up

Returns:

true if it fits

matchesLastOf

public static boolean matchesLastOf(netrexx.lang.Rexx what,
                                    netrexx.lang.Rexx dows,
                                    netrexx.lang.Rexx currDow,
                                    netrexx.lang.Rexx actualDay,
                                    netrexx.lang.Rexx maxDays)

createCronline

public static java.lang.String createCronline(java.util.Date from,
                                              boolean minute,
                                              boolean hour,
                                              boolean day,
                                              boolean month,
                                              boolean dow)

sleep

public static void sleep(int n)

checkCronThread

public static void checkCronThread(boolean killcron)