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<?php
/**
* API for MediaWiki 1.17+
*
* Created on May 14, 2010
*
* Copyright © 2010 Sam Reed
* 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
*/
/**
* This gives links pointing to the given interwiki
* @ingroup API
*/
class ApiQueryIWBacklinks extends ApiQueryGeneratorBase {
public function __construct( $query, $moduleName ) {
parent::__construct( $query, $moduleName, 'iwbl' );
}
public function execute() {
$this->run();
}
public function executeGenerator( $resultPageSet ) {
$this->run( $resultPageSet );
}
/**
* @param $resultPageSet ApiPageSet
* @return void
*/
public function run( $resultPageSet = null ) {
$params = $this->extractRequestParams();
if ( isset( $params['title'] ) && !isset( $params['prefix'] ) ) {
$this->dieUsageMsg( array( 'missingparam', 'prefix' ) );
}
if ( !is_null( $params['continue'] ) ) {
$cont = explode( '|', $params['continue'] );
if ( count( $cont ) != 3 ) {
$this->dieUsage( 'Invalid continue param. You should pass the ' .
'original value returned by the previous query', '_badcontinue' );
}
$db = $this->getDB();
$op = $params['dir'] == 'descending' ? '<' : '>';
$prefix = $db->addQuotes( $cont[0] );
$title = $db->addQuotes( $cont[1] );
$from = intval( $cont[2] );
$this->addWhere(
"iwl_prefix $op $prefix OR " .
"(iwl_prefix = $prefix AND " .
"(iwl_title $op $title OR " .
"(iwl_title = $title AND " .
"iwl_from $op= $from)))"
);
}
$prop = array_flip( $params['prop'] );
$iwprefix = isset( $prop['iwprefix'] );
$iwtitle = isset( $prop['iwtitle'] );
$this->addTables( array( 'iwlinks', 'page' ) );
$this->addWhere( 'iwl_from = page_id' );
$this->addFields( array( 'page_id', 'page_title', 'page_namespace', 'page_is_redirect',
'iwl_from', 'iwl_prefix', 'iwl_title' ) );
$sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
if ( isset( $params['prefix'] ) ) {
$this->addWhereFld( 'iwl_prefix', $params['prefix'] );
if ( isset( $params['title'] ) ) {
$this->addWhereFld( 'iwl_title', $params['title'] );
$this->addOption( 'ORDER BY', 'iwl_from' . $sort );
} else {
$this->addOption( 'ORDER BY', array(
'iwl_title' . $sort,
'iwl_from' . $sort
));
}
} else {
$this->addOption( 'ORDER BY', array(
'iwl_prefix' . $sort,
'iwl_title' . $sort,
'iwl_from' . $sort
));
}
$this->addOption( 'LIMIT', $params['limit'] + 1 );
$res = $this->select( __METHOD__ );
$pages = array();
$count = 0;
$result = $this->getResult();
foreach ( $res as $row ) {
if ( ++ $count > $params['limit'] ) {
// We've reached the one extra which shows that there are additional pages to be had. Stop here...
// Continue string preserved in case the redirect query doesn't pass the limit
$this->setContinueEnumParameter( 'continue', "{$row->iwl_prefix}|{$row->iwl_title}|{$row->iwl_from}" );
break;
}
if ( !is_null( $resultPageSet ) ) {
$pages[] = Title::newFromRow( $row );
} else {
$entry = array( 'pageid' => $row->page_id );
$title = Title::makeTitle( $row->page_namespace, $row->page_title );
ApiQueryBase::addTitleInfo( $entry, $title );
if ( $row->page_is_redirect ) {
$entry['redirect'] = '';
}
if ( $iwprefix ) {
$entry['iwprefix'] = $row->iwl_prefix;
}
if ( $iwtitle ) {
$entry['iwtitle'] = $row->iwl_title;
}
$fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $entry );
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', "{$row->iwl_prefix}|{$row->iwl_title}|{$row->iwl_from}" );
break;
}
}
}
if ( is_null( $resultPageSet ) ) {
$result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'iw' );
} else {
$resultPageSet->populateFromTitles( $pages );
}
}
public function getCacheMode( $params ) {
return 'public';
}
public function getAllowedParams() {
return array(
'prefix' => null,
'title' => null,
'continue' => null,
'limit' => array(
ApiBase::PARAM_DFLT => 10,
ApiBase::PARAM_TYPE => 'limit',
ApiBase::PARAM_MIN => 1,
ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
),
'prop' => array(
ApiBase::PARAM_ISMULTI => true,
ApiBase::PARAM_DFLT => '',
ApiBase::PARAM_TYPE => array(
'iwprefix',
'iwtitle',
),
),
'dir' => array(
ApiBase::PARAM_DFLT => 'ascending',
ApiBase::PARAM_TYPE => array(
'ascending',
'descending'
)
),
);
}
public function getParamDescription() {
return array(
'prefix' => 'Prefix for the interwiki',
'title' => "Interwiki link to search for. Must be used with {$this->getModulePrefix()}prefix",
'continue' => 'When more results are available, use this to continue',
'prop' => array(
'Which properties to get',
' iwprefix - Adds the prefix of the interwiki',
' iwtitle - Adds the title of the interwiki',
),
'limit' => 'How many total pages to return',
'dir' => 'The direction in which to list',
);
}
public function getResultProperties() {
return array(
'' => array(
'pageid' => 'integer',
'ns' => 'namespace',
'title' => 'string',
'redirect' => 'boolean'
),
'iwprefix' => array(
'iwprefix' => 'string'
),
'iwtitle' => array(
'iwtitle' => 'string'
)
);
}
public function getDescription() {
return array( 'Find all pages that link to the given interwiki link.',
'Can be used to find all links with a prefix, or',
'all links to a title (with a given prefix).',
'Using neither parameter is effectively "All IW Links"',
);
}
public function getPossibleErrors() {
return array_merge( parent::getPossibleErrors(), array(
array( 'missingparam', 'prefix' ),
array( 'code' => '_badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
) );
}
public function getExamples() {
return array(
'api.php?action=query&list=iwbacklinks&iwbltitle=Test&iwblprefix=wikibooks',
'api.php?action=query&generator=iwbacklinks&giwbltitle=Test&giwblprefix=wikibooks&prop=info'
);
}
public function getVersion() {
return __CLASS__ . ': $Id$';
}
}
|
