Issues in deleteOrphanedRevisions.php (master) - Issues in master - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

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maintenance/deleteOrphanedRevisions.php (1 issue)

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Bug 1

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Minor 1

Chad Horohoe 1

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<?php
/**
 * Delete revisions which refer to a nonexisting page.
 * Sometimes manual deletion done in a rush leaves crap in the database.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Maintenance
 * @author Rob Church <[email protected]>
 * @todo More efficient cleanup of text records
 */

require_once __DIR__ . '/Maintenance.php';

/**
 * Maintenance script that deletes revisions which refer to a nonexisting page.
 *
 * @ingroup Maintenance
 */
class DeleteOrphanedRevisions extends Maintenance {
	public function __construct() {
		parent::__construct();
		$this->addDescription(
			'Maintenance script to delete revisions which refer to a nonexisting page' );
		$this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' );
	}

	public function execute() {
		$this->output( "Delete Orphaned Revisions\n" );

		$report = $this->hasOption( 'report' );

		$dbw = $this->getDB( DB_MASTER );
		$this->beginTransaction( $dbw, __METHOD__ );
		list( $page, $revision ) = $dbw->tableNamesN( 'page', 'revision' );

		# Find all the orphaned revisions
		$this->output( "Checking for orphaned revisions..." );
		$sql = "SELECT rev_id FROM {$revision} LEFT JOIN {$page} ON rev_page = page_id "
			. "WHERE page_namespace IS NULL";
		$res = $dbw->query( $sql, 'deleteOrphanedRevisions' );

		# Stash 'em all up for deletion (if needed)
		$revisions = [];
		foreach ( $res as $row ) {
			$revisions[] = $row->rev_id;
		}
		$count = count( $revisions );
		$this->output( "found {$count}.\n" );

		# Nothing to do?
		if ( $report || $count == 0 ) {
			$this->commitTransaction( $dbw, __METHOD__ );
			exit( 0 );
		}

		# Delete each revision
		$this->output( "Deleting..." );
		$this->deleteRevs( $revisions, $dbw );
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
		$this->output( "done.\n" );

		# Close the transaction and call the script to purge unused text records
		$this->commitTransaction( $dbw, __METHOD__ );
		$this->purgeRedundantText( true );
	}

	/**
	 * Delete one or more revisions from the database
	 * Do this inside a transaction
	 *
	 * @param array $id Array of revision id values
	 * @param Database $dbw Database class (needs to be a master)
	 */
	private function deleteRevs( $id, &$dbw ) {
		if ( !is_array( $id ) ) {
			$id = [ $id ];
		}
		$dbw->delete( 'revision', [ 'rev_id' => $id ], __METHOD__ );
	}
}

$maintClass = "DeleteOrphanedRevisions";
require_once RUN_MAINTENANCE_IF_MAIN;


1			<?php
2			/**
3			* Delete revisions which refer to a nonexisting page.
4			* Sometimes manual deletion done in a rush leaves crap in the database.
5			*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License along
17			* with this program; if not, write to the Free Software Foundation, Inc.,
18			* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19			* http://www.gnu.org/copyleft/gpl.html
20			*
21			* @file
22			* @ingroup Maintenance
23			* @author Rob Church <[email protected]>
24			* @todo More efficient cleanup of text records
25			*/
26
27			require_once __DIR__ . '/Maintenance.php';
28
29			/**
30			* Maintenance script that deletes revisions which refer to a nonexisting page.
31			*
32			* @ingroup Maintenance
33			*/
34			class DeleteOrphanedRevisions extends Maintenance {
35			public function __construct() {
36			parent::__construct();
37			$this->addDescription(
38			'Maintenance script to delete revisions which refer to a nonexisting page' );
39			$this->addOption( 'report', 'Prints out a count of affected revisions but doesn\'t delete them' );
40			}
41
42			public function execute() {
43			$this->output( "Delete Orphaned Revisions\n" );
44
45			$report = $this->hasOption( 'report' );
46
47			$dbw = $this->getDB( DB_MASTER );
48			$this->beginTransaction( $dbw, __METHOD__ );
49			list( $page, $revision ) = $dbw->tableNamesN( 'page', 'revision' );
50
51			# Find all the orphaned revisions
52			$this->output( "Checking for orphaned revisions..." );
53			$sql = "SELECT rev_id FROM {$revision} LEFT JOIN {$page} ON rev_page = page_id "
54			. "WHERE page_namespace IS NULL";
55			$res = $dbw->query( $sql, 'deleteOrphanedRevisions' );
56
57			# Stash 'em all up for deletion (if needed)
58			$revisions = [];
59			foreach ( $res as $row ) {
60			$revisions[] = $row->rev_id;
61			}
62			$count = count( $revisions );
63			$this->output( "found {$count}.\n" );
64
65			# Nothing to do?
66			if ( $report \|\| $count == 0 ) {
67			$this->commitTransaction( $dbw, __METHOD__ );
68			exit( 0 );
69			}
70
71			# Delete each revision
72			$this->output( "Deleting..." );
73			$this->deleteRevs( $revisions, $dbw );
			0 ignored issues – show Bug introduced 2016-09-29 17:29 UTC by Report Bug Copy Issue Report Show Similar Issues like this It seems like `$dbw` defined by `$this->getDB(DB_MASTER)` on line `47` can be `null`; however, `DeleteOrphanedRevisions::deleteRevs()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
74			$this->output( "done.\n" );
75
76			# Close the transaction and call the script to purge unused text records
77			$this->commitTransaction( $dbw, __METHOD__ );
78			$this->purgeRedundantText( true );
79			}
80
81			/**
82			* Delete one or more revisions from the database
83			* Do this inside a transaction
84			*
85			* @param array $id Array of revision id values
86			* @param Database $dbw Database class (needs to be a master)
87			*/
88			private function deleteRevs( $id, &$dbw ) {
89			if ( !is_array( $id ) ) {
90			$id = [ $id ];
91			}
92			$dbw->delete( 'revision', [ 'rev_id' => $id ], __METHOD__ );
93			}
94			}
95
96			$maintClass = "DeleteOrphanedRevisions";
97			require_once RUN_MAINTENANCE_IF_MAIN;
98

wikimedia / mediawiki

Issues (4122)

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maintenance/deleteOrphanedRevisions.php (1 issue)

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