ApiQueryAllLinks::execute() - Code Metrics - wikimedia/mediawiki - Measure and Improve Code Quality continuously with Scrutinizer

ApiQueryAllLinks::execute() A
last analyzed 2016-11-13 17:42 UTC

↳ Parent: ApiQueryAllLinks

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	2
nc	1
nop	0
dl	0
loc	3
rs	10
c	0
b	0
f	0

<?php
/**
 *
 *
 * Created on July 7, 2007
 *
 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
 *
 * 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
 */

/**
 * Query module to enumerate links from all pages together.
 *
 * @ingroup API
 */
class ApiQueryAllLinks extends ApiQueryGeneratorBase {

	private $table, $tablePrefix, $indexTag;

	private $fieldTitle = 'title';
	private $dfltNamespace = NS_MAIN;
	private $hasNamespace = true;
	private $useIndex = null;
	private $props = [];

	public function __construct( ApiQuery $query, $moduleName ) {
		switch ( $moduleName ) {
			case 'alllinks':
				$prefix = 'al';
				$this->table = 'pagelinks';
				$this->tablePrefix = 'pl_';
				$this->useIndex = 'pl_namespace';
				$this->indexTag = 'l';
				break;
			case 'alltransclusions':
				$prefix = 'at';
				$this->table = 'templatelinks';
				$this->tablePrefix = 'tl_';
				$this->dfltNamespace = NS_TEMPLATE;
				$this->useIndex = 'tl_namespace';
				$this->indexTag = 't';
				break;
			case 'allfileusages':
				$prefix = 'af';
				$this->table = 'imagelinks';
				$this->tablePrefix = 'il_';
				$this->fieldTitle = 'to';
				$this->dfltNamespace = NS_FILE;
				$this->hasNamespace = false;
				$this->indexTag = 'f';
				break;
			case 'allredirects':
				$prefix = 'ar';
				$this->table = 'redirect';
				$this->tablePrefix = 'rd_';
				$this->indexTag = 'r';
				$this->props = [
					'fragment' => 'rd_fragment',
					'interwiki' => 'rd_interwiki',
				];
				break;
			default:
				ApiBase::dieDebug( __METHOD__, 'Unknown module name' );
		}

		parent::__construct( $query, $moduleName, $prefix );
function myFunction($a) {
    switch ($a) {
        case 'foo':
            $x = 1;
            break;

        case 'bar':
            $x = 2;
            break;
    }

    // $x is potentially undefined here.
    echo $x;
}
	}

	public function execute() {
		$this->run();
	}

	public function getCacheMode( $params ) {
		return 'public';
	}

	public function executeGenerator( $resultPageSet ) {
		$this->run( $resultPageSet );
	}

	/**
	 * @param ApiPageSet $resultPageSet
	 * @return void
	 */
	private function run( $resultPageSet = null ) {
		$db = $this->getDB();
		$params = $this->extractRequestParams();

		$pfx = $this->tablePrefix;
		$fieldTitle = $this->fieldTitle;
		$prop = array_flip( $params['prop'] );
		$fld_ids = isset( $prop['ids'] );
		$fld_title = isset( $prop['title'] );
		if ( $this->hasNamespace ) {
			$namespace = $params['namespace'];
		} else {
			$namespace = $this->dfltNamespace;
		}

		if ( $params['unique'] ) {
			$matches = array_intersect_key( $prop, $this->props + [ 'ids' => 1 ] );
			if ( $matches ) {
				$p = $this->getModulePrefix();
				$this->dieUsage(
					"Cannot use {$p}prop=" . implode( '|', array_keys( $matches ) ) . " with {$p}unique",
					'params'
				);
			}
			$this->addOption( 'DISTINCT' );
		}

		$this->addTables( $this->table );
		if ( $this->hasNamespace ) {
			$this->addWhereFld( $pfx . 'namespace', $namespace );
		}

		$continue = !is_null( $params['continue'] );
		if ( $continue ) {
			$continueArr = explode( '|', $params['continue'] );
			$op = $params['dir'] == 'descending' ? '<' : '>';
			if ( $params['unique'] ) {
				$this->dieContinueUsageIf( count( $continueArr ) != 1 );
				$continueTitle = $db->addQuotes( $continueArr[0] );
				$this->addWhere( "{$pfx}{$fieldTitle} $op= $continueTitle" );
			} else {
				$this->dieContinueUsageIf( count( $continueArr ) != 2 );
				$continueTitle = $db->addQuotes( $continueArr[0] );
				$continueFrom = intval( $continueArr[1] );
				$this->addWhere(
					"{$pfx}{$fieldTitle} $op $continueTitle OR " .
					"({$pfx}{$fieldTitle} = $continueTitle AND " .
					"{$pfx}from $op= $continueFrom)"
				);
			}
		}

		// 'continue' always overrides 'from'
		$from = ( $continue || $params['from'] === null ? null :
			$this->titlePartToKey( $params['from'], $namespace ) );
		$to = ( $params['to'] === null ? null :
			$this->titlePartToKey( $params['to'], $namespace ) );
		$this->addWhereRange( $pfx . $fieldTitle, 'newer', $from, $to );

		if ( isset( $params['prefix'] ) ) {
			$this->addWhere( $pfx . $fieldTitle . $db->buildLike( $this->titlePartToKey(
				$params['prefix'], $namespace ), $db->anyString() ) );
		}

		$this->addFields( [ 'pl_title' => $pfx . $fieldTitle ] );
		$this->addFieldsIf( [ 'pl_from' => $pfx . 'from' ], !$params['unique'] );
		foreach ( $this->props as $name => $field ) {
			$this->addFieldsIf( $field, isset( $prop[$name] ) );
		}

		if ( $this->useIndex ) {
			$this->addOption( 'USE INDEX', $this->useIndex );
		}
		$limit = $params['limit'];
		$this->addOption( 'LIMIT', $limit + 1 );

		$sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
		$orderBy = [];
		$orderBy[] = $pfx . $fieldTitle . $sort;
		if ( !$params['unique'] ) {
			$orderBy[] = $pfx . 'from' . $sort;
		}
		$this->addOption( 'ORDER BY', $orderBy );

		$res = $this->select( __METHOD__ );

		$pageids = [];
		$titles = [];
		$count = 0;
		$result = $this->getResult();
		foreach ( $res as $row ) {
			if ( ++$count > $limit ) {
				// We've reached the one extra which shows that there are
				// additional pages to be had. Stop here...
				if ( $params['unique'] ) {
					$this->setContinueEnumParameter( 'continue', $row->pl_title );
				} else {
					$this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from );
				}
				break;
			}

			if ( is_null( $resultPageSet ) ) {
				$vals = [
					ApiResult::META_TYPE => 'assoc',
				];
				if ( $fld_ids ) {
					$vals['fromid'] = intval( $row->pl_from );
				}
				if ( $fld_title ) {
					$title = Title::makeTitle( $namespace, $row->pl_title );
					ApiQueryBase::addTitleInfo( $vals, $title );
				}
				foreach ( $this->props as $name => $field ) {
					if ( isset( $prop[$name] ) && $row->$field !== null && $row->$field !== '' ) {
						$vals[$name] = $row->$field;
					}
				}
				$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
				if ( !$fit ) {
					if ( $params['unique'] ) {
						$this->setContinueEnumParameter( 'continue', $row->pl_title );
					} else {
						$this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from );
					}
					break;
				}
			} elseif ( $params['unique'] ) {
				$titles[] = Title::makeTitle( $namespace, $row->pl_title );
			} else {
				$pageids[] = $row->pl_from;
			}
		}

		if ( is_null( $resultPageSet ) ) {
			$result->addIndexedTagName( [ 'query', $this->getModuleName() ], $this->indexTag );
		} elseif ( $params['unique'] ) {
			$resultPageSet->populateFromTitles( $titles );
		} else {
			$resultPageSet->populateFromPageIDs( $pageids );
		}
	}

	public function getAllowedParams() {
		$allowedParams = [
			'continue' => [
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
			],
			'from' => null,
			'to' => null,
			'prefix' => null,
			'unique' => false,
			'prop' => [
				ApiBase::PARAM_ISMULTI => true,
				ApiBase::PARAM_DFLT => 'title',
				ApiBase::PARAM_TYPE => array_merge(
					[ 'ids', 'title' ], array_keys( $this->props )
				),
				ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
			],
			'namespace' => [
				ApiBase::PARAM_DFLT => $this->dfltNamespace,
				ApiBase::PARAM_TYPE => 'namespace'
			],
			'limit' => [
				ApiBase::PARAM_DFLT => 10,
				ApiBase::PARAM_TYPE => 'limit',
				ApiBase::PARAM_MIN => 1,
				ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
				ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
			],
			'dir' => [
				ApiBase::PARAM_DFLT => 'ascending',
				ApiBase::PARAM_TYPE => [
					'ascending',
					'descending'
				]
			],
		];
		if ( !$this->hasNamespace ) {
			unset( $allowedParams['namespace'] );
		}

		return $allowedParams;
	}

	protected function getExamplesMessages() {
		$p = $this->getModulePrefix();
		$name = $this->getModuleName();
		$path = $this->getModulePath();

		return [
			"action=query&list={$name}&{$p}from=B&{$p}prop=ids|title"
				=> "apihelp-$path-example-B",
			"action=query&list={$name}&{$p}unique=&{$p}from=B"
				=> "apihelp-$path-example-unique",
			"action=query&generator={$name}&g{$p}unique=&g{$p}from=B"
				=> "apihelp-$path-example-unique-generator",
			"action=query&generator={$name}&g{$p}from=B"
				=> "apihelp-$path-example-generator",
		];
	}

	public function getHelpUrls() {
		$name = ucfirst( $this->getModuleName() );

		return "https://www.mediawiki.org/wiki/API:{$name}";
	}
}


1		<?php
2		/**
3		*
4		*
5		* Created on July 7, 2007
6		*
7		* Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
8		*
9		* This program is free software; you can redistribute it and/or modify
10		* it under the terms of the GNU General Public License as published by
11		* the Free Software Foundation; either version 2 of the License, or
12		* (at your option) any later version.
13		*
14		* This program is distributed in the hope that it will be useful,
15		* but WITHOUT ANY WARRANTY; without even the implied warranty of
16		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17		* GNU General Public License for more details.
18		*
19		* You should have received a copy of the GNU General Public License along
20		* with this program; if not, write to the Free Software Foundation, Inc.,
21		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22		* http://www.gnu.org/copyleft/gpl.html
23		*
24		* @file
25		*/
26
27		/**
28		* Query module to enumerate links from all pages together.
29		*
30		* @ingroup API
31		*/
32		class ApiQueryAllLinks extends ApiQueryGeneratorBase {
33
34		private $table, $tablePrefix, $indexTag;
		0 ignored issues – show Coding Style introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report It is generally advisable to only define one property per statement. Only declaring a single property per statement allows you to later on add doc comments more easily. It is also recommended by PSR2, so it is a common style that many people expect. Loading history...
35		private $fieldTitle = 'title';
36		private $dfltNamespace = NS_MAIN;
37		private $hasNamespace = true;
38		private $useIndex = null;
39		private $props = [];
40
41		public function __construct( ApiQuery $query, $moduleName ) {
42		switch ( $moduleName ) {
43		case 'alllinks':
44		$prefix = 'al';
45		$this->table = 'pagelinks';
46		$this->tablePrefix = 'pl_';
47		$this->useIndex = 'pl_namespace';
48		$this->indexTag = 'l';
49		break;
50	View Code Duplication	case 'alltransclusions':
51		$prefix = 'at';
52		$this->table = 'templatelinks';
53		$this->tablePrefix = 'tl_';
54		$this->dfltNamespace = NS_TEMPLATE;
55		$this->useIndex = 'tl_namespace';
56		$this->indexTag = 't';
57		break;
58	View Code Duplication	case 'allfileusages':
59		$prefix = 'af';
60		$this->table = 'imagelinks';
61		$this->tablePrefix = 'il_';
62		$this->fieldTitle = 'to';
63		$this->dfltNamespace = NS_FILE;
64		$this->hasNamespace = false;
65		$this->indexTag = 'f';
66		break;
67		case 'allredirects':
68		$prefix = 'ar';
69		$this->table = 'redirect';
70		$this->tablePrefix = 'rd_';
71		$this->indexTag = 'r';
72		$this->props = [
73		'fragment' => 'rd_fragment',
74		'interwiki' => 'rd_interwiki',
75		];
76		break;
77		default:
78		ApiBase::dieDebug( __METHOD__, 'Unknown module name' );
79		}
80
81		parent::__construct( $query, $moduleName, $prefix );
		0 ignored issues – show Bug introduced 2016-01-16 18:00 UTC by Report Bug Copy Issue Report The variable `$prefix` does not seem to be defined for all execution paths leading up to this point. If you define a variable conditionally, it can happen that it is not defined for all execution paths. Let’s take a look at an example: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } // $x is potentially undefined here. echo $x; } In the above example, the variable `$x` is defined if you pass “foo” or “bar” as argument for `$a`. However, since the `switch` statement has no default case statement, if you pass any other value, the variable `$x` would be undefined. Available Fixes Check for existence of the variable explicitly: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } if (isset($x)) { // Make sure it's always set. echo $x; } } Define a default value for the variable: function myFunction($a) { $x = ''; // Set a default which gets overridden for certain paths. switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; } echo $x; } Add a value for the missing path: function myFunction($a) { switch ($a) { case 'foo': $x = 1; break; case 'bar': $x = 2; break; // We add support for the missing case. default: $x = ''; break; } echo $x; } Loading history...
82		}
83
84		public function execute() {
85		$this->run();
86		}
87
88		public function getCacheMode( $params ) {
89		return 'public';
90		}
91
92		public function executeGenerator( $resultPageSet ) {
93		$this->run( $resultPageSet );
94		}
95
96		/**
97		* @param ApiPageSet $resultPageSet
98		* @return void
99		*/
100		private function run( $resultPageSet = null ) {
101		$db = $this->getDB();
102		$params = $this->extractRequestParams();
103
104		$pfx = $this->tablePrefix;
105		$fieldTitle = $this->fieldTitle;
106		$prop = array_flip( $params['prop'] );
107		$fld_ids = isset( $prop['ids'] );
108		$fld_title = isset( $prop['title'] );
109		if ( $this->hasNamespace ) {
110		$namespace = $params['namespace'];
111		} else {
112		$namespace = $this->dfltNamespace;
113		}
114
115		if ( $params['unique'] ) {
116		$matches = array_intersect_key( $prop, $this->props + [ 'ids' => 1 ] );
117		if ( $matches ) {
118		$p = $this->getModulePrefix();
119		$this->dieUsage(
120		"Cannot use {$p}prop=" . implode( '\|', array_keys( $matches ) ) . " with {$p}unique",
121		'params'
122		);
123		}
124		$this->addOption( 'DISTINCT' );
125		}
126
127		$this->addTables( $this->table );
128		if ( $this->hasNamespace ) {
129		$this->addWhereFld( $pfx . 'namespace', $namespace );
130		}
131
132		$continue = !is_null( $params['continue'] );
133		if ( $continue ) {
134		$continueArr = explode( '\|', $params['continue'] );
135		$op = $params['dir'] == 'descending' ? '<' : '>';
136		if ( $params['unique'] ) {
137		$this->dieContinueUsageIf( count( $continueArr ) != 1 );
138		$continueTitle = $db->addQuotes( $continueArr[0] );
139		$this->addWhere( "{$pfx}{$fieldTitle} $op= $continueTitle" );
140		} else {
141		$this->dieContinueUsageIf( count( $continueArr ) != 2 );
142		$continueTitle = $db->addQuotes( $continueArr[0] );
143		$continueFrom = intval( $continueArr[1] );
144		$this->addWhere(
145		"{$pfx}{$fieldTitle} $op $continueTitle OR " .
146		"({$pfx}{$fieldTitle} = $continueTitle AND " .
147		"{$pfx}from $op= $continueFrom)"
148		);
149		}
150		}
151
152		// 'continue' always overrides 'from'
153		$from = ( $continue \|\| $params['from'] === null ? null :
154		$this->titlePartToKey( $params['from'], $namespace ) );
155		$to = ( $params['to'] === null ? null :
156		$this->titlePartToKey( $params['to'], $namespace ) );
157		$this->addWhereRange( $pfx . $fieldTitle, 'newer', $from, $to );
158
159		if ( isset( $params['prefix'] ) ) {
160		$this->addWhere( $pfx . $fieldTitle . $db->buildLike( $this->titlePartToKey(
161		$params['prefix'], $namespace ), $db->anyString() ) );
162		}
163
164		$this->addFields( [ 'pl_title' => $pfx . $fieldTitle ] );
165		$this->addFieldsIf( [ 'pl_from' => $pfx . 'from' ], !$params['unique'] );
166		foreach ( $this->props as $name => $field ) {
167		$this->addFieldsIf( $field, isset( $prop[$name] ) );
168		}
169
170		if ( $this->useIndex ) {
171		$this->addOption( 'USE INDEX', $this->useIndex );
172		}
173		$limit = $params['limit'];
174		$this->addOption( 'LIMIT', $limit + 1 );
175
176		$sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
177		$orderBy = [];
178		$orderBy[] = $pfx . $fieldTitle . $sort;
179		if ( !$params['unique'] ) {
180		$orderBy[] = $pfx . 'from' . $sort;
181		}
182		$this->addOption( 'ORDER BY', $orderBy );
183
184		$res = $this->select( __METHOD__ );
185
186		$pageids = [];
187		$titles = [];
188		$count = 0;
189		$result = $this->getResult();
190		foreach ( $res as $row ) {
191	View Code Duplication	if ( ++$count > $limit ) {
192		// We've reached the one extra which shows that there are
193		// additional pages to be had. Stop here...
194		if ( $params['unique'] ) {
195		$this->setContinueEnumParameter( 'continue', $row->pl_title );
196		} else {
197		$this->setContinueEnumParameter( 'continue', $row->pl_title . '\|' . $row->pl_from );
198		}
199		break;
200		}
201
202		if ( is_null( $resultPageSet ) ) {
203		$vals = [
204		ApiResult::META_TYPE => 'assoc',
205		];
206		if ( $fld_ids ) {
207		$vals['fromid'] = intval( $row->pl_from );
208		}
209		if ( $fld_title ) {
210		$title = Title::makeTitle( $namespace, $row->pl_title );
211		ApiQueryBase::addTitleInfo( $vals, $title );
212		}
213		foreach ( $this->props as $name => $field ) {
214		if ( isset( $prop[$name] ) && $row->$field !== null && $row->$field !== '' ) {
215		$vals[$name] = $row->$field;
216		}
217		}
218		$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
219	View Code Duplication	if ( !$fit ) {
220		if ( $params['unique'] ) {
221		$this->setContinueEnumParameter( 'continue', $row->pl_title );
222		} else {
223		$this->setContinueEnumParameter( 'continue', $row->pl_title . '\|' . $row->pl_from );
224		}
225		break;
226		}
227		} elseif ( $params['unique'] ) {
228		$titles[] = Title::makeTitle( $namespace, $row->pl_title );
229		} else {
230		$pageids[] = $row->pl_from;
231		}
232		}
233
234	View Code Duplication	if ( is_null( $resultPageSet ) ) {
235		$result->addIndexedTagName( [ 'query', $this->getModuleName() ], $this->indexTag );
236		} elseif ( $params['unique'] ) {
237		$resultPageSet->populateFromTitles( $titles );
238		} else {
239		$resultPageSet->populateFromPageIDs( $pageids );
240		}
241		}
242
243		public function getAllowedParams() {
244		$allowedParams = [
245		'continue' => [
246		ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
247		],
248		'from' => null,
249		'to' => null,
250		'prefix' => null,
251		'unique' => false,
252		'prop' => [
253		ApiBase::PARAM_ISMULTI => true,
254		ApiBase::PARAM_DFLT => 'title',
255		ApiBase::PARAM_TYPE => array_merge(
256		[ 'ids', 'title' ], array_keys( $this->props )
257		),
258		ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
259		],
260		'namespace' => [
261		ApiBase::PARAM_DFLT => $this->dfltNamespace,
262		ApiBase::PARAM_TYPE => 'namespace'
263		],
264		'limit' => [
265		ApiBase::PARAM_DFLT => 10,
266		ApiBase::PARAM_TYPE => 'limit',
267		ApiBase::PARAM_MIN => 1,
268		ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
269		ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
270		],
271		'dir' => [
272		ApiBase::PARAM_DFLT => 'ascending',
273		ApiBase::PARAM_TYPE => [
274		'ascending',
275		'descending'
276		]
277		],
278		];
279		if ( !$this->hasNamespace ) {
280		unset( $allowedParams['namespace'] );
281		}
282
283		return $allowedParams;
284		}
285
286		protected function getExamplesMessages() {
287		$p = $this->getModulePrefix();
288		$name = $this->getModuleName();
289		$path = $this->getModulePath();
290
291		return [
292		"action=query&list={$name}&{$p}from=B&{$p}prop=ids\|title"
293		=> "apihelp-$path-example-B",
294		"action=query&list={$name}&{$p}unique=&{$p}from=B"
295		=> "apihelp-$path-example-unique",
296		"action=query&generator={$name}&g{$p}unique=&g{$p}from=B"
297		=> "apihelp-$path-example-unique-generator",
298		"action=query&generator={$name}&g{$p}from=B"
299		=> "apihelp-$path-example-generator",
300		];
301		}
302
303		public function getHelpUrls() {
304		$name = ucfirst( $this->getModuleName() );
305
306		return "https://www.mediawiki.org/wiki/API:{$name}";
307		}
308		}
309

wikimedia / mediawiki

ApiQueryAllLinks::execute() A last analyzed 2016-11-13 17:42 UTC

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ApiQueryAllLinks::execute() A
last analyzed 2016-11-13 17:42 UTC