backup_activity_task Class Reference

Provides all the settings and steps to perform one complete backup of the activity. More...

Inheritance diagram for backup_activity_task:

Public Member Functions
	__construct ($name, $moduleid, $plan=null)
	Constructor - instantiates one object of this class.
	add_result ($result)
	Add the given info to the current plan's results.
	add_step ($step)
	build ()
	Create all the steps that will be part of this task.
	calculate_checksum ()
	This function will return one unique and stable checksum for one instance of the class implementing it.
	destroy ()
	Destroy all circular references.
	execute ()
	Exceptionally override the execute method, so, based in the activity_included setting, we are able to skip the execution of one task completely.
	get_activityid ()
	get_backupid ()
	get_basepath ()
	get_contextid ()
	get_courseid ()
	get_kept_roles ()
	Get the user roles that should be kept in the destination course for a course copy operation.
	get_logger ()
	get_moduleid ()
	get_modulename ()
	get_name ()
	get_progress ()
	Gets the progress reporter, which can be used to report progress within the backup or restore process.
	get_results ()
	Return the current plan's results.
	get_sectionid ()
	get_setting ($name)
	Tries to look for the instance specific setting value, task specific setting value or the common plan setting value - in that order.
	get_setting_value ($name)
	get_settings ()
	get_steps ()
	get_taskbasepath ()
	get_weight ()
	Returns the weight of this task, an approximation of the amount of time it will take.
	is_checksum_correct ($checksum)
	Given one checksum, returns if matches object's checksum (true) or no (false)
	is_excluding_activities ()
	log ($message, $level, $a=null, $depth=null, $display=false)
	This function will be responsible for handling the params, and to call to the corresponding logger->process() once all modifications in params have been performed.
	set_plan ($plan)
	setting_exists ($name)

Static Public Member Functions
static	encode_content_links ($content)
	Encodes URLs to the activity instance's scripts into a site-independent form.

Protected Member Functions
	add_setting ($setting)
	define_my_settings ()
	Defines activity specific settings to be added to the common ones.
	define_my_steps ()
	Defines activity specific steps for this task.
	define_settings ()
	Defines the common setting that any backup activity will have.

Protected Attributes
	$activityid
bool	$built
	$contextid
bool	$executed
	$moduleid
	$modulename
string	$name
backup_plan restore_plan	$plan
	$sectionid
base_setting[]	$settings
base_step[]	$steps

Detailed Description

Provides all the settings and steps to perform one complete backup of the activity.

Activities are supposed to provide the subclass of this class in their file mod/MODULENAME/backup/moodle2/backup_MODULENAME_activity_task.class.php The expected name of the subclass is backup_MODULENAME_activity_task

Constructor & Destructor Documentation

__construct()

backup_activity_task::__construct	(		$name,
			$moduleid,
			$plan = null )

Constructor - instantiates one object of this class.

Parameters

string	$name	the task identifier
int	$moduleid	course module id (id in course_modules table)
backup_plan | null	$plan	the backup plan instance this task is part of

Member Function Documentation

add_result()

base_task::add_result ( $result )

inherited

Add the given info to the current plan's results.

See also

base_plan\add_result()

Parameters

array

$result

associative array describing a result of a task/step

build()

backup_activity_task::build

(

)

Create all the steps that will be part of this task.

Reimplemented from base_task.

calculate_checksum()

base_task::calculate_checksum ( )

inherited

This function will return one unique and stable checksum for one instance of the class implementing it.

It's each implementation responsibility to do it recursively if needed and use optional store (caching) of the checksum if necessary/possible

Implements checksumable.

define_my_settings()

backup_activity_task::define_my_settings ( )

abstractprotected

Defines activity specific settings to be added to the common ones.

This method is called from self::define_settings(). The activity module author may use it to define additional settings that influence the execution of the backup.

Most activities just leave the method empty.

See also

self\define_settings() for the example how to define own settings

Reimplemented in backup_assign_activity_task, backup_bigbluebuttonbn_activity_task, backup_book_activity_task, backup_chat_activity_task, backup_choice_activity_task, backup_data_activity_task, backup_feedback_activity_task, backup_folder_activity_task, backup_forum_activity_task, backup_glossary_activity_task, backup_h5pactivity_activity_task, backup_imscp_activity_task, backup_label_activity_task, backup_lesson_activity_task, backup_lti_activity_task, backup_page_activity_task, backup_quiz_activity_task, backup_resource_activity_task, backup_scorm_activity_task, backup_survey_activity_task, backup_url_activity_task, backup_wiki_activity_task, and backup_workshop_activity_task.

define_my_steps()

backup_activity_task::define_my_steps ( )

abstractprotected

Defines activity specific steps for this task.

This method is called from self::build(). Activities are supposed to call {self\add_step()} in it to include their specific steps in the backup plan.

Reimplemented in backup_assign_activity_task, backup_bigbluebuttonbn_activity_task, backup_book_activity_task, backup_chat_activity_task, backup_choice_activity_task, backup_data_activity_task, backup_feedback_activity_task, backup_folder_activity_task, backup_forum_activity_task, backup_glossary_activity_task, backup_h5pactivity_activity_task, backup_imscp_activity_task, backup_label_activity_task, backup_lesson_activity_task, backup_lti_activity_task, backup_page_activity_task, backup_quiz_activity_task, backup_resource_activity_task, backup_scorm_activity_task, backup_survey_activity_task, backup_url_activity_task, backup_wiki_activity_task, and backup_workshop_activity_task.

define_settings()

backup_activity_task::define_settings ( )

protected

Defines the common setting that any backup activity will have.

Reimplemented from base_task.

destroy()

base_task::destroy ( )

inherited

Destroy all circular references.

It helps PHP 5.2 a lot!

encode_content_links()

static backup_activity_task::encode_content_links ( $content )

static

Encodes URLs to the activity instance's scripts into a site-independent form.

The current instance of the activity may be referenced from other places in the course by URLs like http://my.moodle.site/mod/workshop/view.php?id=42 Obvisouly, such URLs are not valid any more once the course is restored elsewhere. For this reason the backup file does not store the original URLs but encodes them into a transportable form. During the restore, the reverse process is applied and the encoded URLs are replaced with the new ones valid for the target site.

Every plugin must override this method in its subclass.

See also

backup_xml_transformer class that actually runs the transformation

Parameters

string

$content

some HTML text that eventually contains URLs to the activity instance scripts

Return values

string

the content with the URLs encoded

Reimplemented in backup_assign_activity_task, backup_bigbluebuttonbn_activity_task, backup_book_activity_task, backup_chat_activity_task, backup_choice_activity_task, backup_data_activity_task, backup_feedback_activity_task, backup_folder_activity_task, backup_forum_activity_task, backup_glossary_activity_task, backup_h5pactivity_activity_task, backup_imscp_activity_task, backup_label_activity_task, backup_lesson_activity_task, backup_lti_activity_task, backup_page_activity_task, backup_quiz_activity_task, backup_resource_activity_task, backup_scorm_activity_task, backup_survey_activity_task, backup_url_activity_task, backup_wiki_activity_task, and backup_workshop_activity_task.

execute()

backup_activity_task::execute

(

)

Exceptionally override the execute method, so, based in the activity_included setting, we are able to skip the execution of one task completely.

Reimplemented from base_task.

get_activityid()

backup_activity_task::get_activityid

(

)

Return values

int	the id of the activity instance (id in the activity's instances table)

get_contextid()

backup_activity_task::get_contextid

(

)

Return values

int	the id of the associated CONTEXT_MODULE instance

get_kept_roles()

backup_task::get_kept_roles ( )

inherited

Get the user roles that should be kept in the destination course for a course copy operation.

Return values

array

get_moduleid()

backup_activity_task::get_moduleid

(

)

Return values

int	the course module id (id in the course_modules table)

get_modulename()

backup_activity_task::get_modulename

(

)

Return values

string

the name of the module, eg 'workshop' (from the modules table)

get_progress()

base_task::get_progress ( )

inherited

Gets the progress reporter, which can be used to report progress within the backup or restore process.

Return values

core\progress\base

Progress reporting object

get_results()

base_task::get_results ( )

inherited

Return the current plan's results.

Return values

array|null

get_sectionid()

backup_activity_task::get_sectionid

(

)

Return values

int	the course section id (id in the course_sections table)

get_setting()

backup_activity_task::get_setting

(

$name

)

Tries to look for the instance specific setting value, task specific setting value or the common plan setting value - in that order.

Parameters

string

$name

the name of the setting

Return values

mixed|null

the value of the setting or null if not found

Reimplemented from base_task.

get_taskbasepath()

backup_activity_task::get_taskbasepath

(

)

Return values

string

full path to the directory where this task writes its files

Reimplemented from base_task.

get_weight()

base_task::get_weight ( )

inherited

Returns the weight of this task, an approximation of the amount of time it will take.

By default this value is 1. It can be increased for longer tasks.

Return values

int

Weight

Reimplemented in backup_final_task.

is_checksum_correct()

base_task::is_checksum_correct ( $checksum )

inherited

Given one checksum, returns if matches object's checksum (true) or no (false)

Implements checksumable.

log()

base_task::log ( $message, $level, $a = null, $depth = null, $display = false )

inherited

This function will be responsible for handling the params, and to call to the corresponding logger->process() once all modifications in params have been performed.

Implements loggable.

---

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

• backup/moodle2/backup_activity_task.class.php