103 lines
3.1 KiB
PHP
103 lines
3.1 KiB
PHP
<?php
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/**
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* Class ActionScheduler_Abstract_RecurringSchedule
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*/
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abstract class ActionScheduler_Abstract_RecurringSchedule extends ActionScheduler_Abstract_Schedule {
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/**
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* The date & time the first instance of this schedule was setup to run (which may not be this instance).
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*
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* Schedule objects are attached to an action object. Each schedule stores the run date for that
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* object as the start date - @see $this->start - and logic to calculate the next run date after
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* that - @see $this->calculate_next(). The $first_date property also keeps a record of when the very
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* first instance of this chain of schedules ran.
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*
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* @var DateTime
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*/
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private $first_date = NULL;
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/**
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* Timestamp equivalent of @see $this->first_date
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*
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* @var int
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*/
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protected $first_timestamp = NULL;
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/**
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* The recurrance between each time an action is run using this schedule.
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* Used to calculate the start date & time. Can be a number of seconds, in the
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* case of ActionScheduler_IntervalSchedule, or a cron expression, as in the
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* case of ActionScheduler_CronSchedule. Or something else.
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*
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* @var mixed
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*/
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protected $recurrence;
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/**
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* @param DateTime $date The date & time to run the action.
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* @param mixed $recurrence The data used to determine the schedule's recurrance.
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* @param DateTime|null $first (Optional) The date & time the first instance of this interval schedule ran. Default null, meaning this is the first instance.
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*/
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public function __construct( DateTime $date, $recurrence, DateTime $first = null ) {
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parent::__construct( $date );
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$this->first_date = empty( $first ) ? $date : $first;
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$this->recurrence = $recurrence;
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}
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/**
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* @return bool
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*/
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public function is_recurring() {
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return true;
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}
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/**
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* Get the date & time of the first schedule in this recurring series.
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*
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* @return DateTime|null
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*/
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public function get_first_date() {
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return clone $this->first_date;
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}
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/**
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* @return string
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*/
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public function get_recurrence() {
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return $this->recurrence;
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}
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/**
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* For PHP 5.2 compat, since DateTime objects can't be serialized
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* @return array
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*/
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public function __sleep() {
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$sleep_params = parent::__sleep();
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$this->first_timestamp = $this->first_date->getTimestamp();
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return array_merge( $sleep_params, array(
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'first_timestamp',
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'recurrence'
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) );
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}
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/**
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* Unserialize recurring schedules serialized/stored prior to AS 3.0.0
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*
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* Prior to Action Scheduler 3.0.0, schedules used different property names to refer
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* to equivalent data. For example, ActionScheduler_IntervalSchedule::start_timestamp
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* was the same as ActionScheduler_SimpleSchedule::timestamp. This was addressed in
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* Action Scheduler 3.0.0, where properties and property names were aligned for better
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* inheritance. To maintain backward compatibility with scheduled serialized and stored
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* prior to 3.0, we need to correctly map the old property names.
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*/
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public function __wakeup() {
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parent::__wakeup();
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if ( $this->first_timestamp > 0 ) {
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$this->first_date = as_get_datetime_object( $this->first_timestamp );
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} else {
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$this->first_date = $this->get_date();
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}
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}
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}
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