core_search\document Class Reference

Represents a document to index. More...

Inheritance diagram for core_search\document:

Public Member Functions
	__construct ($itemid, $componentname, $areaname)
	We ensure that the document has a unique id across search areas. More...
	add_stored_file ($file)
	Add a stored file to the document. More...
	export_for_engine ()
	Returns the document ready to submit to the search engine. More...
	export_for_template (\renderer_base $output)
	Export the document data to be used as a template context. More...
	export_for_template (renderer_base $output)
	Function to export the renderer data in a format that is suitable for a mustache template. More...
	get ($field)
	Getter. More...
	get_context_url ()
	Gets the url to the context. More...
	get_doc_icon ()
	Gets document icon instance. More...
	get_doc_url ()
	Gets the url to the doc. More...
	get_files ()
	Returns the array of attached files. More...
	get_is_new ()
	Returns if the document is new. More...
	is_set ($field)
	Checks if a field is set. More...
	set ($fieldname, $value)
	Setter. More...
	set_context_url (\moodle_url $url)
	set_data_from_engine ($docdata)
	Fills the document with data coming from the search engine. More...
	set_doc_icon (document_icon $docicon)
	Sets document icon instance. More...
	set_doc_url (\moodle_url $url)
	Sets the document url. More...
	set_extra ($fieldname, $value)
	Sets data to this->extradata. More...
	set_is_new ($new)
	Set if this is a new document. More...

Static Public Member Functions
static	format_string_for_engine ($string)
	Formats a string value for the search engine. More...
static	format_text_for_engine ($text)
	Formats a text value for the search engine. More...
static	format_time_for_engine ($timestamp)
	Formats the timestamp preparing the time fields to be inserted into the search engine. More...
static	get_default_fields_definition ()
	Returns all default fields definitions. More...
static	import_time_from_engine ($time)
	Returns a timestamp from the value stored in the search engine. More...

Public Attributes
int const	SCHEMA_VERSION = 2017091700
	Change list (for engine implementers): 2017091700 - add optional field groupid. More...

Protected Member Functions
	apply_defaults ()
	Apply any defaults to unset fields before export. More...
	format_text ($text)
	Formats a text string coming from the search engine. More...
	get_text_format ()
	Returns how text is returned from the search engine. More...

Protected Attributes
int null	$contentfilearea = null
	The content field filearea.
int null	$contentitemid = null
	The content field itemid.
moodle_url	$contexturl = null
	Link to the document context.
array	$data = array()
	$data The document data.
core_search document_icon	$docicon = null
	Document icon instance.
moodle_url	$docurl = null
	Link to the document.
array	$extradata = array()
	Extra data needed to render the document.
stored_file[]	$files = array()
	An array of stored files to attach to the document.
bool	$isnew = false
	Should be set to true if document hasn't been indexed before. More...

Static Protected Attributes
static array	$enginefields = array()
	Any fields that are engine specifc. More...
static array	$optionalfields
	All optional fields docs can contain. More...
static array	$requiredfields
	All required fields any doc should contain. More...

Detailed Description

Represents a document to index.

Note that, if you are writting a search engine and you want to change core_search\document behaviour, you can overwrite this class, will be automatically loaded from search_YOURENGINE\document.

Copyright

2015 David Monllao http://www.davidmonllao.com

License

http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

__construct()

core_search\document::__construct	(		$itemid,
			$componentname,
			$areaname
	)

We ensure that the document has a unique id across search areas.

Parameters

int	$itemid	An id unique to the search area
string	$componentname	The search area component Frankenstyle name
string	$areaname	The area name (the search area class name)

Return values

void

Member Function Documentation

add_stored_file()

core_search\document::add_stored_file

(

$file

)

Add a stored file to the document.

Parameters

stored_file | int

$file

The file to add, or file id.

Return values

void

apply_defaults()

core_search\document::apply_defaults ( )

protected

Apply any defaults to unset fields before export.

Called after document building, but before export.

Sub-classes of this should make sure to call parent::apply_defaults().

Reimplemented in search_solr\document.

export_for_engine()

core_search\document::export_for_engine

(

)

Returns the document ready to submit to the search engine.

Exceptions

coding_exception

Return values

array

export_for_template() [1/2]

core_search\document::export_for_template

(

\renderer_base

$output

)

Export the document data to be used as a template context.

Adding more info than the required one as people might be interested in extending the template.

Although content is a required field when setting up the document, it accepts '' (empty) values as they may be the result of striping out HTML.

SECURITY NOTE: It is the responsibility of the document to properly escape any text to be displayed. The renderer will output the content without any further cleaning.

Parameters

renderer_base

$output

The renderer.

Return values

array

export_for_template() [2/2]

templatable::export_for_template ( renderer_base  $output )

inherited

Function to export the renderer data in a format that is suitable for a mustache template.

This means:

1. No complex types - only stdClass, array, int, string, float, bool
2. Any additional info that is required for the template is pre-calculated (e.g. capability checks).

Parameters

renderer_base

$output

Used to do a final render of any components that need to be rendered for export.

Return values

stdClass|array

Implemented in forumreport_summary\output\filters, core_user\output\unified_filter, core_user\output\status_field, core_tag\output\taglist, core_tag\output\tagindex, core_tag\output\tagfeed, core_tag\output\tagcloud, core_tag\output\tag, report_competency\output\user_course_navigation, report_competency\output\report, core_privacy\output\exported_navigation_page, core_privacy\output\exported_html_page, MoodleQuickForm_wikieditor, mod_lti\output\tool_configure_page, mod_lti\output\external_registration_return_page, mod_forum\output\quick_search_form, mod_forum\output\big_search_form, mod_feedback\output\summary, booktool_print\output\print_book_page, booktool_print\output\print_book_chapter_page, assign_attempt_history_chooser, mod_assign\output\grading_app, login_signup_form, progress_bar, action_menu, tabtree, tabobject, custom_menu_item, initials_bar, paging_bar, url_select, single_select, pix_icon, pix_icon_font, help_icon, component_action, MoodleQuickForm_warning, MoodleQuickForm_url, MoodleQuickForm_textarea, MoodleQuickForm_tags, MoodleQuickForm_submit, MoodleQuickForm_static, MoodleQuickForm_selectwithlink, MoodleQuickForm_selectgroups, MoodleQuickForm_select, MoodleQuickForm_recaptcha, MoodleQuickForm_passwordunmask, MoodleQuickForm_group, MoodleQuickForm_grading, MoodleQuickForm_filepicker, MoodleQuickForm_filemanager, MoodleQuickForm_editor, MoodleQuickForm_date_time_selector, MoodleQuickForm_date_selector, MoodleQuickForm_checkbox, MoodleQuickForm_autocomplete, MoodleQuickForm_advcheckbox, core\output\chooser_section, core\output\chooser_item, core\output\chooser, core\output\checkbox_toggleall, core_group\output\index_page, core_group\output\group_details, enrol_lti\output\registration, core_course\output\modchooser, block_timeline\output\main, block_starredcourses\output\main, block_search_forums\output\search_form, block_recentlyaccesseditems\output\main, block_recentlyaccessedcourses\output\main, block_myprofile\output\myprofile, block_myoverview\output\main, block_lp\output\summary, block_lp\output\plans_to_review_page, block_lp\output\competencies_to_review_page, core_auth\output\verify_age_location_page, core_auth\output\login, core_auth\output\digital_minor_page, tool_templatelibrary\output\list_templates_page, tool_policy\output\page_viewdoc, tool_policy\output\page_viewalldoc, tool_policy\output\page_nopermission, tool_policy\output\page_managedocs_list, tool_policy\output\page_agreedocs, tool_policy\output\guestconsent, tool_policy\output\acceptances, tool_lp\output\user_evidence_list_page, tool_lp\output\user_competency_summary_in_course, tool_lp\output\user_competency_summary, tool_lp\output\user_competency_course_navigation, tool_lp\output\template_competencies_page, tool_lp\output\related_competencies, tool_lp\output\plans_page, tool_lp\output\module_navigation, tool_lp\output\manage_templates_page, tool_lp\output\manage_competency_frameworks_page, tool_lp\output\manage_competencies_page, tool_lp\output\course_competencies_page, tool_lp\output\competency_summary, tool_lp\output\competency_plan_navigation, tool_langimport\output\langimport_page, tool_dataprivacy\output\summary_page, tool_dataprivacy\output\request_filter, tool_dataprivacy\output\purposes, tool_dataprivacy\output\my_data_requests_page, tool_dataprivacy\output\defaults_page, tool_dataprivacy\output\data_requests_page, tool_dataprivacy\output\data_registry_page, tool_dataprivacy\output\data_registry_compliance_page, tool_dataprivacy\output\data_deletion_page, tool_dataprivacy\output\categories, and tool_customlang\output\translator.

format_string_for_engine()

static core_search\document::format_string_for_engine (   $string )

static

Formats a string value for the search engine.

Search engines may overwrite this method to apply restrictions, like limiting the size. The default behaviour is just returning the string.

Parameters

string

$string

Return values

string

Reimplemented in search_solr\document.

format_text()

core_search\document::format_text (   $text )

protected

Formats a text string coming from the search engine.

By default just return the text as it is:

• Search areas are responsible of sending just plain data, the search engine may append HTML or markdown to it (highlighing for example).
• The view is responsible of shortening the text if it is too big

Parameters

string

$text

Text to format

Return values

string

HTML text to be renderer

Reimplemented in search_solr\document.

format_text_for_engine()

static core_search\document::format_text_for_engine (   $text )

static

Formats a text value for the search engine.

Search engines may overwrite this method to apply restrictions, like limiting the size. The default behaviour is just returning the string.

Parameters

string

$text

Return values

string

format_time_for_engine()

static core_search\document::format_time_for_engine (   $timestamp )

static

Formats the timestamp preparing the time fields to be inserted into the search engine.

By default it just returns a timestamp so any search engine could just store integers and use integers comparison to get documents between x and y timestamps, but search engines might be interested in using their own field formats. They can do it extending this class in search_xxx\document.

Parameters

int

$timestamp

Return values

string

Reimplemented in search_solr\document.

get()

core_search\document::get

(

$field

)

Getter.

Use self::is_set if you are not sure if this field is set or not as otherwise it will trigger a coding_exception

Exceptions

coding_exception

Parameters

string

$field

Return values

string|int

get_context_url()

core_search\document::get_context_url

(

)

Gets the url to the context.

Return values

moodle_url

get_default_fields_definition()

static core_search\document::get_default_fields_definition ( )

static

Returns all default fields definitions.

Return values

array

get_doc_icon()

core_search\document::get_doc_icon

(

)

Gets document icon instance.

Return values

core_search

get_doc_url()

core_search\document::get_doc_url

(

)

Gets the url to the doc.

Return values

moodle_url

get_files()

core_search\document::get_files

(

)

Returns the array of attached files.

Return values

stored_file[]

get_is_new()

core_search\document::get_is_new

(

)

Returns if the document is new.

False if unknown.

Return values

bool

get_text_format()

core_search\document::get_text_format ( )

protected

Returns how text is returned from the search engine.

Return values

int

Reimplemented in search_solr\document.

import_time_from_engine()

static core_search\document::import_time_from_engine (   $time )

static

Returns a timestamp from the value stored in the search engine.

By default it just returns a timestamp so any search engine could just store integers and use integers comparison to get documents between x and y timestamps, but search engines might be interested in using their own field formats. They should do it extending this class in search_xxx\document.

Parameters

string

$time

Return values

int

Reimplemented in search_solr\document.

is_set()

core_search\document::is_set

(

$field

)

Checks if a field is set.

Parameters

string

$field

Return values

bool

set()

core_search\document::set	(		$fieldname,
			$value
	)

Setter.

Basic checkings to prevent common issues.

If the field is a string tags will be stripped, if it is an integer or a date it will be casted to a PHP integer. tdate fields values are expected to be timestamps.

Exceptions

coding_exception

Parameters

string	$fieldname	The field name
string | int	$value	The value to store

Return values

string|int

The stored value

set_data_from_engine()

core_search\document::set_data_from_engine

(

$docdata

)

Fills the document with data coming from the search engine.

Exceptions

core_search

set_doc_icon()

core_search\document::set_doc_icon

(

document_icon

$docicon

)

Sets document icon instance.

Parameters

core_search\document_icon

$docicon

set_doc_url()

core_search\document::set_doc_url

(

\moodle_url

$url

)

Sets the document url.

Parameters

moodle_url

$url

Return values

void

set_extra()

core_search\document::set_extra	(		$fieldname,
			$value
	)

Sets data to this->extradata.

This data can be retrieved using core_search\document->get($fieldname).

Parameters

string	$fieldname
string	$value

Return values

void

set_is_new()

core_search\document::set_is_new

(

$new

)

Set if this is a new document.

False if unknown.

Parameters

bool

$new

Member Data Documentation

$enginefields

array core_search\document::$enginefields = array()

staticprotected

Any fields that are engine specifc.

These are fields that are solely used by a search engine plugin for internal purposes.

Field names should be prefixed with engine name to avoid potential conflict with core fields.

Uses same format as fields above.

$isnew

bool core_search\document::$isnew = false

protected

Should be set to true if document hasn't been indexed before.

False if unknown.

$optionalfields

array core_search\document::$optionalfields

staticprotected

Initial value:

= array(
        'userid' => array(
            'type' => 'int',
            'stored' => true,
            'indexed' => true
        ),
        'groupid' => array(
            'type' => 'int',
            'stored' => true,
            'indexed' => true
        ),
        'description1' => array(
            'type' => 'text',
            'stored' => true,
            'indexed' => true,
            'mainquery' => true
        ),
        'description2' => array(
            'type' => 'text',
            'stored' => true,
            'indexed' => true,
            'mainquery' => true
        )
    )

All optional fields docs can contain.

Although it matches solr fields format, this is just to define the field types. Search engine plugins are responsible of setting their appropriate field types and map these naming to whatever format they need.

$requiredfields

array core_search\document::$requiredfields

staticprotected

All required fields any doc should contain.

We have to choose a format to specify field types, using solr format as we have to choose one and solr is the default search engine.

Search engine plugins are responsible of setting their appropriate field types and map these naming to whatever format they need.

SCHEMA_VERSION

int const core_search\document::SCHEMA_VERSION = 2017091700

Change list (for engine implementers): 2017091700 - add optional field groupid.

Schema version number (update if any change)

---

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

• search/classes/document.php