Inherited by MediaWiki\CommentStore\CommentStore.

Public Member Functions
	__construct ( $tempTables, Language $lang, $stage)

	createComment (IDatabase $dbw, $comment, array $data=null)
	Create a new CommentStoreComment, inserting it into the database if necessary.

	getComment ( $key, $row=null, $fallback=false)
	Extract the comment from a row.

	getCommentLegacy (IDatabase $db, $key, $row=null, $fallback=false)
	Extract the comment from a row, with legacy lookups.

	getFields ( $key)
	Get SELECT fields for the comment key.

	getJoin ( $key)
	Get SELECT fields and joins for the comment key.

	getTempTableMigrationStage (string $key)

	insert (IDatabase $dbw, $key, $comment=null, $data=null)
	Insert a comment in preparation for a row that references it.

	insertWithTempTable (IDatabase $dbw, $key, $comment=null, $data=null)
	Insert a comment in a temporary table in preparation for a row that references it.

Static Public Member Functions
static	hash ( $text, $data)
	Hashing function for comment storage.

Public Attributes
const	COMMENT_CHARACTER_LIMIT = 500
	Maximum length of a comment in UTF-8 characters.

const	MAX_DATA_LENGTH = 65535
	Maximum length of serialized data in bytes.

Protected Attributes
	$tempTables
	Define fields that use temporary tables for transitional purposes Array keys are field names, values are arrays with these possible fields:

Detailed Description

Definition at line 38 of file CommentStoreBase.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\CommentStore\CommentStoreBase::__construct	(		$tempTables,
		Language	$lang,
			$stage )

Parameters

array	$tempTables	Define fields that use temporary tables for transitional purposes
Language	$lang	Language to use for comment truncation. Defaults to content language.
int	$stage	One of the MIGRATION_* constants, or an appropriate combination of SCHEMA_COMPAT_* constants.

Definition at line 86 of file CommentStoreBase.php.

References $lang, MediaWiki\CommentStore\CommentStoreBase\$tempTables, SCHEMA_COMPAT_READ_BOTH, and SCHEMA_COMPAT_WRITE_BOTH.

Member Function Documentation

◆ createComment()

MediaWiki\CommentStore\CommentStoreBase::createComment	(	IDatabase	$dbw,
			$comment,
		array	$data = null )

Create a new CommentStoreComment, inserting it into the database if necessary.

If a comment is going to be passed to self::insert() or the like multiple times, it will be more efficient to pass a CommentStoreComment once rather than making self::insert() do it every time through.

Note: When passing a CommentStoreComment, this may set $comment->id if it's not already set. If $comment->id is already set, it will not be verified that the specified comment actually exists or that it corresponds to the comment text, message, and/or data in the CommentStoreComment.

Parameters

IDatabase	$dbw	Database handle to insert on. Unused if `$comment` is a CommentStoreComment and `$comment->id` is set.
string \| Message \| CommentStoreComment	$comment	Comment text or Message object, or a CommentStoreComment.
array \| null	$data	Structured data to store. Keys beginning with '_' are reserved. Ignored if $comment is a CommentStoreComment.

Returns: CommentStoreComment

Definition at line 401 of file CommentStoreBase.php.

References FormatJson\ALL_OK, FormatJson\encode(), MediaWiki\CommentStore\CommentStoreBase\hash(), Wikimedia\Rdbms\IDatabase\insert(), Wikimedia\Rdbms\IDatabase\insertId(), MediaWiki\CommentStore\CommentStoreBase\MAX_DATA_LENGTH, Wikimedia\Rdbms\IReadableDatabase\newSelectQueryBuilder(), MediaWiki\CommentStore\CommentStoreComment\newUnsavedComment(), SCHEMA_COMPAT_WRITE_NEW, and true.

◆ getComment()

MediaWiki\CommentStore\CommentStoreBase::getComment	(	$key,
		$row = null,
		$fallback = false )

Extract the comment from a row.

Use self::getJoin() to ensure the row contains the needed data.

If you need to fake a comment in a row for some reason, set fields {$key}_text (string) and {$key}_data (JSON string or null).

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

string	$key	A key such as "rev_comment" identifying the comment field being fetched.
stdClass \| array \| null	$row	Result row.
bool	$fallback	If true, fall back as well as possible instead of throwing an exception.

Returns: CommentStoreComment

Definition at line 344 of file CommentStoreBase.php.

References $fallback.

◆ getCommentLegacy()

MediaWiki\CommentStore\CommentStoreBase::getCommentLegacy	(	IDatabase	$db,
			$key,
			$row = null,
			$fallback = false )

Extract the comment from a row, with legacy lookups.

If $row might have been generated using self::getFields() rather than self::getJoin(), use this. Prefer self::getComment() if you know callers used self::getJoin() for the row fetch.

If you need to fake a comment in a row for some reason, set fields {$key}_text (string) and {$key}_data (JSON string or null).

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

IDatabase	$db	Database handle to use for lookup
string	$key	A key such as "rev_comment" identifying the comment field being fetched.
stdClass \| array \| null	$row	Result row.
bool	$fallback	If true, fall back as well as possible instead of throwing an exception.

Returns: CommentStoreComment

Definition at line 372 of file CommentStoreBase.php.

References $fallback.

◆ getFields()

MediaWiki\CommentStore\CommentStoreBase::getFields ( $key )

Get SELECT fields for the comment key.

Each resulting row should be passed to self::getCommentLegacy() to get the actual comment.

Note: Use of this method may require a subsequent database query to actually fetch the comment. If possible, use self::getJoin() instead.

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

string $key A key such as "rev_comment" identifying the comment field being fetched.

Returns: string[] to include in the $vars to IDatabase->select(). All fields are aliased, so + is safe to use.

Definition at line 115 of file CommentStoreBase.php.

References MIGRATION_NEW, SCHEMA_COMPAT_READ_BOTH, SCHEMA_COMPAT_READ_NEW, and SCHEMA_COMPAT_READ_OLD.

◆ getJoin()

MediaWiki\CommentStore\CommentStoreBase::getJoin ( $key )

Get SELECT fields and joins for the comment key.

Each resulting row should be passed to self::getComment() to get the actual comment.

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

string $key A key such as "rev_comment" identifying the comment field being fetched.

Returns

array[] With three keys:

tables: (string[]) to include in the $table to IDatabase->select() or SelectQueryBuilder::tables
fields: (string[]) to include in the $vars to IDatabase->select() or SelectQueryBuilder::fields
joins: (array) to include in the $join_conds to IDatabase->select() or SelectQueryBuilder::joinConds All tables, fields, and joins are aliased, so + is safe to use.

Definition at line 154 of file CommentStoreBase.php.

References $t, MIGRATION_NEW, SCHEMA_COMPAT_READ_BOTH, SCHEMA_COMPAT_READ_NEW, and SCHEMA_COMPAT_READ_OLD.

◆ getTempTableMigrationStage()

MediaWiki\CommentStore\CommentStoreBase::getTempTableMigrationStage ( string $key )

Since: 1.40

Parameters

string $key

Returns: int|null

Definition at line 573 of file CommentStoreBase.php.

◆ hash()

static MediaWiki\CommentStore\CommentStoreBase::hash	(		$text,
			$data )

static

Hashing function for comment storage.

Parameters

string	$text	Comment text
string \| null	$data	Comment data

Returns: int 32-bit signed integer

Definition at line 623 of file CommentStoreBase.php.

Referenced by MediaWiki\CommentStore\CommentStoreBase\createComment().

◆ insert()

MediaWiki\CommentStore\CommentStoreBase::insert	(	IDatabase	$dbw,
			$key,
			$comment = null,
			$data = null )

Insert a comment in preparation for a row that references it.

Note: It's recommended to include both the call to this method and the row insert in the same transaction.

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

IDatabase	$dbw	Database handle to insert on
string	$key	A key such as "rev_comment" identifying the comment field being fetched.
string \| Message \| CommentStoreComment \| null	$comment	As for `self::createComment()`
array \| null	$data	As for `self::createComment()`

Returns: array Fields for the insert or update

Definition at line 509 of file CommentStoreBase.php.

References MIGRATION_NEW, and SCHEMA_COMPAT_WRITE_OLD.

◆ insertWithTempTable()

MediaWiki\CommentStore\CommentStoreBase::insertWithTempTable	(	IDatabase	$dbw,
			$key,
			$comment = null,
			$data = null )

Insert a comment in a temporary table in preparation for a row that references it.

This is currently needed for "rev_comment". In the future that requirement will be removed.

Note: It's recommended to include both the call to this method and the row insert in the same transaction.

Since: 1.30; 1.31 Method signature changed, $key parameter added (required since 1.35)

Parameters

IDatabase	$dbw	Database handle to insert on
string	$key	A key such as "rev_comment" identifying the comment field being fetched.
string \| Message \| CommentStoreComment \| null	$comment	As for `self::createComment()`
array \| null	$data	As for `self::createComment()`

Returns

array Two values:

array Fields for the insert or update
callable Function to call when the primary key of the row being inserted/updated is known. Pass it that primary key.

Definition at line 545 of file CommentStoreBase.php.

References wfDeprecated().

Member Data Documentation

◆ $tempTables

MediaWiki\CommentStore\CommentStoreBase::$tempTables

protected

Define fields that use temporary tables for transitional purposes Array keys are field names, values are arrays with these possible fields:

table: Temporary table name
pk: Temporary table column referring to the main table's primary key
field: Temporary table column referring comment.comment_id
joinPK: Main table's primary key
stage: Migration stage
deprecatedIn: Version when using insertWithTempTable() was deprecated

Definition at line 63 of file CommentStoreBase.php.

Referenced by MediaWiki\CommentStore\CommentStoreBase\__construct().

◆ COMMENT_CHARACTER_LIMIT

const MediaWiki\CommentStore\CommentStoreBase::COMMENT_CHARACTER_LIMIT = 500

Maximum length of a comment in UTF-8 characters.

Longer comments will be truncated.

Note: This must be at least 255 and not greater than floor( MAX_DATA_LENGTH / 4 ).

Definition at line 44 of file CommentStoreBase.php.

◆ MAX_DATA_LENGTH

const MediaWiki\CommentStore\CommentStoreBase::MAX_DATA_LENGTH = 65535

Maximum length of serialized data in bytes.

Longer data will result in an exception.

Note: This value is determined by the size of the underlying database field, currently BLOB in MySQL/MariaDB.

Definition at line 51 of file CommentStoreBase.php.

Referenced by MediaWiki\CommentStore\CommentStoreBase\createComment().

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

includes/CommentStore/CommentStoreBase.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ createComment()

◆ getComment()

◆ getCommentLegacy()

◆ getFields()

◆ getJoin()

◆ getTempTableMigrationStage()

◆ hash()

◆ insert()

◆ insertWithTempTable()

Member Data Documentation

◆ $tempTables

◆ COMMENT_CHARACTER_LIMIT

◆ MAX_DATA_LENGTH