core\task\tag_cron_task Class Reference

Simple task to run the tag cron. More...

Inheritance diagram for core\task\tag_cron_task:

Public Member Functions
	bulk_delete_instances ($instances)
	This function will delete numerous tag instances efficiently. More...
	cleanup ()
	Clean up the tag tables, making sure all tagged object still exists. More...
	compute_correlations ($mincorrelation=2)
	Calculates and stores the correlated tags of all tags. More...
	eval_cron_field ($field, $min, $max)
	Take a cron field definition and return an array of valid numbers with the range min-max. More...
	execute ()
	Do the job. More...
	get_component ()
	Getter for $component. More...
	get_cron_lock ()
	Get the current lock for the entire cron. More...
	get_day ()
	Getter for $day. More...
	get_day_of_week ()
	Getter for $dayofweek. More...
	get_disabled ()
	Getter for $disabled. More...
	get_fail_delay ()
	Getter for $faildelay. More...
	get_hour ()
	Getter for $hour. More...
	get_last_run_time ()
	Get the last run time for this scheduled task. More...
	get_lock ()
	Get the current lock for this task. More...
	get_minute ()
	Getter for $minute. More...
	get_month ()
	Getter for $month. More...
	get_name ()
	Get a descriptive name for this task (shown to admins). More...
	get_next_run_time ()
	Get the next run time for this task. More...
	get_next_scheduled_time ()
	Calculate when this task should next be run based on the schedule. More...
	get_run_if_component_disabled ()
	Override this function if you want this scheduled task to run, even if the component is disabled. More...
	is_blocking ()
	Getter for $blocking. More...
	is_customised ()
	Has this task been changed from it's default config? More...
	process_computed_correlation (stdClass $tagcorrelation)
	This function processes a tag correlation and makes changes in the database as required. More...
	set_blocking ($blocking)
	Setter for $blocking. More...
	set_component ($component)
	Setter for $component. More...
	set_cron_lock (\core\lock\lock $lock)
	Set the current lock for the entire cron process. More...
	set_customised ($customised)
	Has this task been changed from it's default config? More...
	set_day ($day)
	Setter for $day. More...
	set_day_of_week ($dayofweek)
	Setter for $dayofweek. More...
	set_disabled ($disabled)
	Setter for $disabled. More...
	set_fail_delay ($faildelay)
	Setter for $faildelay. More...
	set_hour ($hour)
	Setter for $hour. More...
	set_last_run_time ($lastruntime)
	Set the last run time for this scheduled task. More...
	set_lock (\core\lock\lock $lock)
	Set the current lock for this task. More...
	set_minute ($minute)
	Setter for $minute. More...
	set_month ($month)
	Setter for $month. More...
	set_next_run_time ($nextruntime)
	Set the next run time for this task. More...

Public Attributes
const	DAYOFWEEKMAX = 6
	Maximum dayofweek value.
const	DAYOFWEEKMIN = 0
	Minimum dayofweek value.
const	HOURMAX = 23
	Maximum hour value.
const	HOURMIN = 0
	Minimum hour value.
const	MINUTEMAX = 59
	Maximum minute value.
const	MINUTEMIN = 0
	Minimum minute value.

Detailed Description

Simple task to run the tag cron.

Member Function Documentation

bulk_delete_instances()

core\task\tag_cron_task::bulk_delete_instances

(

$instances

)

This function will delete numerous tag instances efficiently.

This removes tag instances only. It doesn't check to see if it is the last use of a tag.

Parameters

array

$instances

An array of tag instance objects with the addition of the tagname and tagrawname (used for recording a delete event).

cleanup()

core\task\tag_cron_task::cleanup

(

)

Clean up the tag tables, making sure all tagged object still exists.

This method is called from cron.

This should normally not be necessary, but in case related tags are not deleted when the tagged record is removed, this should be done once in a while, perhaps on an occasional cron run. On a site with lots of tags, this could become an expensive function to call.

compute_correlations()

core\task\tag_cron_task::compute_correlations

(

$mincorrelation = 2

)

Calculates and stores the correlated tags of all tags.

The correlations are stored in the 'tag_correlation' table.

Two tags are correlated if they appear together a lot. Ex.: Users tagged with "computers" will probably also be tagged with "algorithms".

The rationale for the 'tag_correlation' table is performance. It works as a cache for a potentially heavy load query done at the 'tag_instance' table. So, the 'tag_correlation' table stores redundant information derived from the 'tag_instance' table.

Parameters

int

$mincorrelation

Only tags with more than $mincorrelation correlations will be identified.

eval_cron_field()

core\task\scheduled_task::eval_cron_field (   $field,   $min,   $max  )

inherited

Take a cron field definition and return an array of valid numbers with the range min-max.

Parameters

string	$field	- The field definition.
int	$min	- The minimum allowable value.
int	$max	- The maximum allowable value.

Return values

array(int)

execute()

core\task\tag_cron_task::execute

(

)

Do the job.

Throw exceptions on errors (the job will be retried).

Reimplemented from core\task\task_base.

get_component()

core\task\task_base::get_component ( )

inherited

Getter for $component.

Return values

string

get_cron_lock()

core\task\task_base::get_cron_lock ( )

inherited

Get the current lock for the entire cron.

Return values

core

get_day()

core\task\scheduled_task::get_day ( )

inherited

Getter for $day.

Return values

string

get_day_of_week()

core\task\scheduled_task::get_day_of_week ( )

inherited

Getter for $dayofweek.

Return values

string

get_disabled()

core\task\scheduled_task::get_disabled ( )

inherited

Getter for $disabled.

Return values

bool

get_fail_delay()

core\task\task_base::get_fail_delay ( )

inherited

Getter for $faildelay.

Return values

int

get_hour()

core\task\scheduled_task::get_hour ( )

inherited

Getter for $hour.

Return values

string

get_last_run_time()

core\task\scheduled_task::get_last_run_time ( )

inherited

Get the last run time for this scheduled task.

Return values

int

get_lock()

core\task\task_base::get_lock ( )

inherited

Get the current lock for this task.

Return values

core

get_minute()

core\task\scheduled_task::get_minute ( )

inherited

Getter for $minute.

Return values

string

get_month()

core\task\scheduled_task::get_month ( )

inherited

Getter for $month.

Return values

string

get_name()

core\task\tag_cron_task::get_name

(

)

Get a descriptive name for this task (shown to admins).

Return values

string

Reimplemented from core\task\scheduled_task.

get_next_run_time()

core\task\task_base::get_next_run_time ( )

inherited

Get the next run time for this task.

Return values

int

timestamp

get_next_scheduled_time()

core\task\scheduled_task::get_next_scheduled_time ( )

inherited

Calculate when this task should next be run based on the schedule.

Return values

int::$nextruntime,.

get_run_if_component_disabled()

core\task\scheduled_task::get_run_if_component_disabled ( )

inherited

Override this function if you want this scheduled task to run, even if the component is disabled.

Return values

bool

is_blocking()

core\task\task_base::is_blocking ( )

inherited

Getter for $blocking.

Return values

bool

is_customised()

core\task\scheduled_task::is_customised ( )

inherited

Has this task been changed from it's default config?

Return values

bool

process_computed_correlation()

core\task\tag_cron_task::process_computed_correlation

(

stdClass

$tagcorrelation

)

This function processes a tag correlation and makes changes in the database as required.

The tag correlation object needs have both a tagid property and a correlatedtags property that is an array.

Parameters

stdClass

$tagcorrelation

Return values

int/bool

The id of the tag correlation that was just processed or false.

set_blocking()

core\task\task_base::set_blocking (   $blocking )

inherited

Setter for $blocking.

Parameters

bool

$blocking

set_component()

core\task\task_base::set_component (   $component )

inherited

Setter for $component.

Parameters

string

$component

set_cron_lock()

core\task\task_base::set_cron_lock ( \core\lock\lock  $lock )

inherited

Set the current lock for the entire cron process.

Parameters

core\lock\lock

$lock

set_customised()

core\task\scheduled_task::set_customised (   $customised )

inherited

Has this task been changed from it's default config?

Parameters

bool

set_day()

core\task\scheduled_task::set_day (   $day )

inherited

Setter for $day.

Parameters

string

$day

set_day_of_week()

core\task\scheduled_task::set_day_of_week (   $dayofweek )

inherited

Setter for $dayofweek.

Parameters

string

$dayofweek

set_disabled()

core\task\scheduled_task::set_disabled (   $disabled )

inherited

Setter for $disabled.

Parameters

bool

$disabled

set_fail_delay()

core\task\task_base::set_fail_delay (   $faildelay )

inherited

Setter for $faildelay.

Parameters

int

$faildelay

set_hour()

core\task\scheduled_task::set_hour (   $hour )

inherited

Setter for $hour.

Accepts a special 'R' value which will be translated to a random hour.

Parameters

string

$hour

set_last_run_time()

core\task\scheduled_task::set_last_run_time (   $lastruntime )

inherited

Set the last run time for this scheduled task.

Parameters

int

$lastruntime

set_lock()

core\task\task_base::set_lock ( \core\lock\lock  $lock )

inherited

Set the current lock for this task.

Parameters

core\lock\lock

$lock

set_minute()

core\task\scheduled_task::set_minute (   $minute )

inherited

Setter for $minute.

Accepts a special 'R' value which will be translated to a random minute.

Parameters

string

$minute

set_month()

core\task\scheduled_task::set_month (   $month )

inherited

Setter for $month.

Parameters

string

$month

set_next_run_time()

core\task\task_base::set_next_run_time (   $nextruntime )

inherited

Set the next run time for this task.

Parameters

int

$nextruntime

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The documentation for this class was generated from the following file:

• lib/classes/task/tag_cron_task.php