}
/**
- * This is three-in-one module to query:
+ * This is a three-in-one module to query:
* * backlinks - links pointing to the given page,
* * embeddedin - what pages transclude the given page within themselves,
* * imageusage - what pages use the given image
- *
- * @addtogroup API
+ *
+ * @ingroup API
*/
class ApiQueryBacklinks extends ApiQueryGeneratorBase {
- private $params, $rootTitle, $contRedirs, $contLevel, $contTitle, $contID;
+ private $params, $rootTitle, $contRedirs, $contLevel, $contTitle, $contID, $redirID;
- // output element name, database column field prefix, database table
+ // output element name, database column field prefix, database table
private $backlinksSettings = array (
'backlinks' => array (
'code' => 'bl',
);
public function __construct($query, $moduleName) {
- $code = $prefix = $linktbl = null;
extract($this->backlinksSettings[$moduleName]);
parent :: __construct($query, $moduleName, $code);
$this->bl_ns = $prefix . '_namespace';
$this->bl_from = $prefix . '_from';
- $this->bl_tables = array (
- $linktbl,
- 'page'
- );
+ $this->bl_table = $linktbl;
$this->bl_code = $code;
$this->hasNS = $moduleName !== 'imageusage';
$this->run($resultPageSet);
}
- private function run($resultPageSet = null) {
- $this->params = $this->extractRequestParams();
-
- $redirect = $this->params['redirect'];
- if ($redirect)
- $this->dieDebug('Redirect has not been implemented', 'notimplemented');
-
- $this->processContinue();
-
- $this->addFields($this->bl_fields);
- if (is_null($resultPageSet))
- $this->addFields(array (
- 'page_id',
- 'page_namespace',
- 'page_title'
- ));
+ private function prepareFirstQuery($resultPageSet = null) {
+ /* SELECT page_id, page_title, page_namespace, page_is_redirect
+ * FROM pagelinks, page WHERE pl_from=page_id
+ * AND pl_title='Foo' AND pl_namespace=0
+ * LIMIT 11 ORDER BY pl_from
+ */
+ $db = $this->getDB();
+ $this->addTables(array('page', $this->bl_table));
+ $this->addWhere("{$this->bl_from}=page_id");
+ if(is_null($resultPageSet))
+ $this->addFields(array('page_id', 'page_title', 'page_namespace'));
else
- $this->addFields($resultPageSet->getPageTableFields()); // will include page_id
-
- $this->addTables($this->bl_tables);
- $this->addWhere($this->bl_from . '=page_id');
-
- if ($this->hasNS)
+ $this->addFields($resultPageSet->getPageTableFields());
+ $this->addFields('page_is_redirect');
+ $this->addWhereFld($this->bl_title, $this->rootTitle->getDBKey());
+ if($this->hasNS)
$this->addWhereFld($this->bl_ns, $this->rootTitle->getNamespace());
- $this->addWhereFld($this->bl_title, $this->rootTitle->getDBkey());
$this->addWhereFld('page_namespace', $this->params['namespace']);
-
+ if(!is_null($this->contID))
+ $this->addWhere("{$this->bl_from}>={$this->contID}");
if($this->params['filterredir'] == 'redirects')
$this->addWhereFld('page_is_redirect', 1);
if($this->params['filterredir'] == 'nonredirects')
$this->addWhereFld('page_is_redirect', 0);
+ $this->addOption('LIMIT', $this->params['limit'] + 1);
+ $this->addOption('ORDER BY', $this->bl_from);
+ }
- $limit = $this->params['limit'];
- $this->addOption('LIMIT', $limit +1);
- $this->addOption('ORDER BY', $this->bl_sort);
-
+ private function prepareSecondQuery($resultPageSet = null) {
+ /* SELECT page_id, page_title, page_namespace, page_is_redirect, pl_title, pl_namespace
+ FROM pagelinks, page WHERE pl_from=page_id
+ AND (pl_title='Foo' AND pl_namespace=0) OR (pl_title='Bar' AND pl_namespace=1)
+ ORDER BY pl_namespace, pl_title, pl_from LIMIT 11
+ */
$db = $this->getDB();
- if (!is_null($this->params['continue'])) {
- $plfrm = intval($this->contID);
- if ($this->contLevel == 0) {
- // For the first level, there is only one target title, so no need for complex filtering
- $this->addWhere($this->bl_from . '>=' . $plfrm);
- } else {
- $ns = $this->contTitle->getNamespace();
- $t = $db->addQuotes($this->contTitle->getDBkey());
- $whereWithoutNS = "{$this->bl_title}>$t OR ({$this->bl_title}=$t AND {$this->bl_from}>=$plfrm))";
+ $this->addTables(array('page', $this->bl_table));
+ $this->addWhere("{$this->bl_from}=page_id");
+ if(is_null($resultPageSet))
+ $this->addFields(array('page_id', 'page_title', 'page_namespace', 'page_is_redirect'));
+ else
+ $this->addFields($resultPageSet->getPageTableFields());
+ $this->addFields($this->bl_title);
+ if($this->hasNS)
+ $this->addFields($this->bl_ns);
+ $titleWhere = array();
+ foreach($this->redirTitles as $t)
+ $titleWhere[] = "({$this->bl_title} = ".$db->addQuotes($t->getDBKey()).
+ ($this->hasNS ? " AND {$this->bl_ns} = '{$t->getNamespace()}'" : "") .
+ ")";
+ $this->addWhere($db->makeList($titleWhere, LIST_OR));
+ $this->addWhereFld('page_namespace', $this->params['namespace']);
+ if(!is_null($this->redirID))
+ {
+ $first = $this->redirTitles[0];
+ $title = $db->strencode($first->getDBKey());
+ $ns = $first->getNamespace();
+ $from = $this->redirID;
+ if($this->hasNS)
+ $this->addWhere("{$this->bl_ns} > $ns OR ".
+ "({$this->bl_ns} = $ns AND ".
+ "({$this->bl_title} > '$title' OR ".
+ "({$this->bl_title} = '$title' AND ".
+ "{$this->bl_from} >= $from)))");
+ else
+ $this->addWhere("{$this->bl_title} > '$title' OR ".
+ "({$this->bl_title} = '$title' AND ".
+ "{$this->bl_from} >= $from)");
+
+ }
+ if($this->params['filterredir'] == 'redirects')
+ $this->addWhereFld('page_is_redirect', 1);
+ if($this->params['filterredir'] == 'nonredirects')
+ $this->addWhereFld('page_is_redirect', 0);
+ $this->addOption('LIMIT', $this->params['limit'] + 1);
+ $this->addOption('ORDER BY', $this->bl_sort);
+ }
- if ($this->hasNS)
- $this->addWhere("{$this->bl_ns}>$ns OR ({$this->bl_ns}=$ns AND ($whereWithoutNS)");
- else
- $this->addWhere($whereWithoutNS);
- }
+ private function run($resultPageSet = null) {
+ $this->params = $this->extractRequestParams(false);
+ $this->redirect = isset($this->params['redirect']) && $this->params['redirect'];
+ $userMax = ( $this->redirect ? ApiBase::LIMIT_BIG1/2 : ApiBase::LIMIT_BIG1 );
+ $botMax = ( $this->redirect ? ApiBase::LIMIT_BIG2/2 : ApiBase::LIMIT_BIG2 );
+ if( $this->params['limit'] == 'max' ) {
+ $this->params['limit'] = $this->getMain()->canApiHighLimits() ? $botMax : $userMax;
+ $this->getResult()->addValue( 'limits', $this->getModuleName(), $this->params['limit'] );
}
- $res = $this->select(__METHOD__);
+ $this->processContinue();
+ $this->prepareFirstQuery($resultPageSet);
+
+ $db = $this->getDB();
+ $res = $this->select(__METHOD__.'::firstQuery');
$count = 0;
- $data = array ();
+ $this->data = array ();
+ $this->continueStr = null;
+ $this->redirTitles = array();
while ($row = $db->fetchObject($res)) {
- if (++ $count > $limit) {
+ if (++ $count > $this->params['limit']) {
// We've reached the one extra which shows that there are additional pages to be had. Stop here...
- if ($redirect) {
- $ns = $row-> { $this->bl_ns };
- $t = $row-> { $this->bl_title };
- $continue = $this->getContinueRedirStr(false, 0, $ns, $t, $row->page_id);
- } else
- $continue = $this->getContinueStr($row->page_id);
- // TODO: Security issue - if the user has no right to view next title, it will still be shown
- $this->setContinueEnumParameter('continue', $continue);
+ // Continue string preserved in case the redirect query doesn't pass the limit
+ $this->continueStr = $this->getContinueStr($row->page_id);
break;
}
- if (is_null($resultPageSet)) {
- $vals = $this->extractRowInfo($row);
- if ($vals)
- $data[] = $vals;
- } else {
+ if (is_null($resultPageSet))
+ $this->extractRowInfo($row);
+ else
+ {
+ if($row->page_is_redirect)
+ $this->redirTitles[] = Title::makeTitle($row->page_namespace, $row->page_title);
$resultPageSet->processDbRow($row);
}
}
$db->freeResult($res);
- if (is_null($resultPageSet) && !empty($data)) {
+ if($this->redirect && count($this->redirTitles))
+ {
+ $this->resetQueryParams();
+ $this->prepareSecondQuery($resultPageSet);
+ $res = $this->select(__METHOD__.'::secondQuery');
+ $count = 0;
+ while($row = $db->fetchObject($res))
+ {
+ if(++$count > $this->params['limit'])
+ {
+ // We've reached the one extra which shows that there are additional pages to be had. Stop here...
+ // We need to keep the parent page of this redir in
+ if($this->hasNS)
+ $contTitle = Title::makeTitle($row->{$this->bl_ns}, $row->{$this->bl_title});
+ else
+ $contTitle = Title::makeTitle(NS_FILE, $row->{$this->bl_title});
+ $this->continueStr = $this->getContinueRedirStr($contTitle->getArticleID(), $row->page_id);
+ break;
+ }
+
+ if(is_null($resultPageSet))
+ $this->extractRedirRowInfo($row);
+ else
+ $resultPageSet->processDbRow($row);
+ }
+ $db->freeResult($res);
+ }
+ if(!is_null($this->continueStr))
+ $this->setContinueEnumParameter('continue', $this->continueStr);
+
+ if (is_null($resultPageSet)) {
+ $resultData = array();
+ foreach($this->data as $ns => $a)
+ foreach($a as $title => $arr)
+ $resultData[] = $arr;
$result = $this->getResult();
- $result->setIndexedTagName($data, $this->bl_code);
- $result->addValue('query', $this->getModuleName(), $data);
+ $result->setIndexedTagName($resultData, $this->bl_code);
+ $result->addValue('query', $this->getModuleName(), $resultData);
}
}
private function extractRowInfo($row) {
+ if(!isset($this->data[$row->page_namespace][$row->page_title])) {
+ $this->data[$row->page_namespace][$row->page_title]['pageid'] = $row->page_id;
+ ApiQueryBase::addTitleInfo($this->data[$row->page_namespace][$row->page_title], Title::makeTitle($row->page_namespace, $row->page_title));
+ if($row->page_is_redirect)
+ {
+ $this->data[$row->page_namespace][$row->page_title]['redirect'] = '';
+ $this->redirTitles[] = Title::makeTitle($row->page_namespace, $row->page_title);
+ }
+ }
+ }
- $vals = array();
- $vals['pageid'] = intval($row->page_id);
- ApiQueryBase :: addTitleInfo($vals, Title :: makeTitle($row->page_namespace, $row->page_title));
-
- return $vals;
+ private function extractRedirRowInfo($row)
+ {
+ $a['pageid'] = $row->page_id;
+ ApiQueryBase::addTitleInfo($a, Title::makeTitle($row->page_namespace, $row->page_title));
+ if($row->page_is_redirect)
+ $a['redirect'] = '';
+ $ns = $this->hasNS ? $row->{$this->bl_ns} : NS_FILE;
+ $this->data[$ns][$row->{$this->bl_title}]['redirlinks'][] = $a;
+ $this->getResult()->setIndexedTagName($this->data[$ns][$row->{$this->bl_title}]['redirlinks'], $this->bl_code);
}
protected function processContinue() {
- $pageSet = $this->getPageSet();
- $count = $pageSet->getTitleCount();
-
- if (!is_null($this->params['continue'])) {
+ if (!is_null($this->params['continue']))
$this->parseContinueParam();
-
- // Skip all completed links
-
- } else {
- $title = $this->params['title'];
- if (!is_null($title)) {
- $this->rootTitle = Title :: newFromText($title);
- } else { // This case is obsolete. Will support this for a while
- if ($count !== 1)
- $this->dieUsage("The {$this->getModuleName()} query requires one title to start", 'bad_title_count');
- $this->rootTitle = current($pageSet->getTitles()); // only one title there
- $this->setWarning('Using titles parameter is obsolete for this list. Use ' . $this->encodeParamName('title') . ' instead.');
+ else {
+ if ( $this->params['title'] !== "" ) {
+ $title = Title::newFromText( $this->params['title'] );
+ if ( !$title ) {
+ $this->dieUsageMsg(array('invalidtitle', $this->params['title']));
+ } else {
+ $this->rootTitle = $title;
+ }
+ } else {
+ $this->dieUsageMsg(array('missingparam', 'title'));
}
}
- // only image titles are allowed for the root
- if (!$this->hasNS && $this->rootTitle->getNamespace() !== NS_IMAGE)
+ // only image titles are allowed for the root in imageinfo mode
+ if (!$this->hasNS && $this->rootTitle->getNamespace() !== NS_FILE)
$this->dieUsage("The title for {$this->getModuleName()} query must be an image", 'bad_image_title');
}
protected function parseContinueParam() {
$continueList = explode('|', $this->params['continue']);
- if ($this->params['redirect']) {
- //
- // expected redirect-mode parameter:
- // ns|db_key|step|level|ns|db_key|id
- // ns+db_key -- the root title
- // step = 1 or 2 - which step to continue from - 1-titles, 2-redirects
- // level -- how many levels to follow before starting enumerating.
- // if level > 0 -- ns+title to continue from, otherwise skip these
- // id = last page_id to continue from
- //
- if (count($continueList) > 4) {
- $rootNs = intval($continueList[0]);
- if (($rootNs !== 0 || $continueList[0] === '0') && !empty ($continueList[1])) {
- $this->rootTitle = Title :: makeTitleSafe($rootNs, $continueList[1]);
- if ($this->rootTitle) {
-
- $step = intval($continueList[2]);
- if ($step === 1 || $step === 2) {
- $this->contRedirs = ($step === 2);
-
- $level = intval($continueList[3]);
- if ($level !== 0 || $continueList[3] === '0') {
- $this->contLevel = $level;
-
- if ($level === 0) {
- if (count($continueList) === 5) {
- $contID = intval($continueList[4]);
- if ($contID !== 0 || $continueList[4] === '0') {
- $this->contID = $contID;
- return; // done
- }
- }
- } else {
- if (count($continueList) === 7) {
- $contNs = intval($continueList[4]);
- if (($contNs !== 0 || $continueList[4] === '0') && !empty ($continueList[5])) {
- $this->contTitle = Title :: makeTitleSafe($contNs, $continueList[5]);
-
- $contID = intval($continueList[6]);
- if ($contID !== 0 || $continueList[6] === '0') {
- $this->contID = $contID;
- return; // done
- }
- }
- }
- }
- }
- }
- }
- }
- }
- } else {
- //
- // expected non-redirect-mode parameter:
- // ns|db_key|id
- // ns+db_key -- the root title
- // id = last page_id to continue from
- //
- if (count($continueList) === 3) {
- $rootNs = intval($continueList[0]);
- if (($rootNs !== 0 || $continueList[0] === '0') && !empty ($continueList[1])) {
- $this->rootTitle = Title :: makeTitleSafe($rootNs, $continueList[1]);
- if ($this->rootTitle) {
-
- $contID = intval($continueList[2]);
- if ($contID !== 0) {
- $this->contID = $contID;
- return; // done
- }
- }
- }
- }
- }
+ // expected format:
+ // ns | key | id1 [| id2]
+ // ns+key: root title
+ // id1: first-level page ID to continue from
+ // id2: second-level page ID to continue from
+
+ // null stuff out now so we know what's set and what isn't
+ $this->rootTitle = $this->contID = $this->redirID = null;
+ $rootNs = intval($continueList[0]);
+ if($rootNs === 0 && $continueList[0] !== '0')
+ // Illegal continue parameter
+ $this->dieUsage("Invalid continue param. You should pass the original value returned by the previous query", "_badcontinue");
+ $this->rootTitle = Title::makeTitleSafe($rootNs, $continueList[1]);
+ if(!$this->rootTitle)
+ $this->dieUsage("Invalid continue param. You should pass the original value returned by the previous query", "_badcontinue");
+ $contID = intval($continueList[2]);
+ if($contID === 0 && $continueList[2] !== '0')
+ $this->dieUsage("Invalid continue param. You should pass the original value returned by the previous query", "_badcontinue");
+ $this->contID = $contID;
+ $redirID = intval(@$continueList[3]);
+ if($redirID === 0 && @$continueList[3] !== '0')
+ // This one isn't required
+ return;
+ $this->redirID = $redirID;
- $this->dieUsage("Invalid continue param. You should pass the original value returned by the previous query", "_badcontinue");
}
protected function getContinueStr($lastPageID) {
'|' . $lastPageID;
}
- protected function getContinueRedirStr($isRedirPhase, $level, $ns, $title, $lastPageID) {
- return $this->rootTitle->getNamespace() .
- '|' . $this->rootTitle->getDBkey() .
- '|' . ($isRedirPhase ? 1 : 2) .
- '|' . $level .
- ($level > 0 ? ('|' . $ns . '|' . $title) : '') .
- '|' . $lastPageID;
+ protected function getContinueRedirStr($lastPageID, $lastRedirID) {
+ return $this->getContinueStr($lastPageID) . '|' . $lastRedirID;
}
- protected function getAllowedParams() {
-
- return array (
+ public function getAllowedParams() {
+ $retval = array (
'title' => null,
'continue' => null,
'namespace' => array (
'nonredirects'
)
),
- 'redirect' => false,
'limit' => array (
ApiBase :: PARAM_DFLT => 10,
ApiBase :: PARAM_TYPE => 'limit',
ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
)
);
+ if($this->getModuleName() == 'embeddedin')
+ return $retval;
+ $retval['redirect'] = false;
+ return $retval;
}
- protected function getParamDescription() {
- return array (
+ public function getParamDescription() {
+ $retval = array (
'title' => 'Title to search. If null, titles= parameter will be used instead, but will be obsolete soon.',
'continue' => 'When more results are available, use this to continue.',
'namespace' => 'The namespace to enumerate.',
- 'filterredir' => 'How to filter for redirects',
- 'redirect' => 'If linking page is a redirect, find all pages that link to that redirect (not implemented)',
- 'limit' => 'How many total pages to return.'
+ 'filterredir' => 'How to filter for redirects'
);
+ if($this->getModuleName() != 'embeddedin')
+ return array_merge($retval, array(
+ 'redirect' => 'If linking page is a redirect, find all pages that link to that redirect as well. Maximum limit is halved.',
+ 'limit' => "How many total pages to return. If {$this->bl_code}redirect is enabled, limit applies to each level separately."
+ ));
+ return array_merge($retval, array(
+ 'limit' => "How many total pages to return."
+ ));
}
- protected function getDescription() {
+ public function getDescription() {
switch ($this->getModuleName()) {
case 'backlinks' :
return 'Find all pages that link to the given page';
}
public function getVersion() {
- return __CLASS__ . ': $Id: ApiQueryBacklinks.php 25476 2007-09-04 14:44:46Z catrope $';
+ return __CLASS__ . ': $Id: ApiQueryBacklinks.php 46135 2009-01-24 13:03:40Z catrope $';
}
}
-
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff