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<?php |
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/** |
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* API module to get a list of modified properties per page for a persons semantic watchlist. |
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* |
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* @since 0.1 |
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* |
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* @file ApiQuerySemanticWatchlist.php |
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* @ingroup SemanticWatchlist |
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* @ingroup API |
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* |
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* @licence GNU GPL v3+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class ApiQuerySemanticWatchlist extends ApiQueryBase { |
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public function __construct( $main, $action ) { |
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parent :: __construct( $main, $action, 'sw' ); |
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} |
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/** |
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* Retrieve the specil words from the database. |
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*/ |
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public function execute() { |
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// Get the requests parameters. |
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$params = $this->extractRequestParams(); |
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if ( !( isset( $params['userid'] ) XOR isset( $params['groupids'] ) ) ) { |
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$this->dieUsage( wfMessage( 'swl-err-userid-xor-groupids' )->text(), 'userid-xor-groupids' ); |
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} |
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$isUserFilter = isset( $params['userid'] ); |
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$filter = $isUserFilter ? $params['userid'] : $params['groupids']; |
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$this->setupChangeSetQuery( $filter, $isUserFilter, $params['limit'], $params['continue'] ); |
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$sets = $this->select( __METHOD__ ); |
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$count = 0; |
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$resultSets = array(); |
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foreach ( $sets as $set ) { |
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if ( ++$count > $params['limit'] ) { |
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// We've reached the one extra which shows that |
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// there are additional pages to be had. Stop here... |
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$this->setContinueEnumParameter( 'continue', $set->edit_time . '-' . $set->spe_set_id ); |
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break; |
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} |
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if ( !is_null( Title::newFromID( $set->edit_page_id ) ) ) { |
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$resultSets[] = SWLChangeSet::newFromDBResult( $set ); |
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} |
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} |
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if ( $params['merge'] ) { |
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$this->mergeSets( $resultSets ); |
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} |
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foreach ( $resultSets as &$set ) { |
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$set = $set->toArray(); |
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foreach ( $set['changes'] as $propName => $changes ) { |
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$this->getResult()->setIndexedTagName( $set['changes'][$propName], 'change' ); |
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} |
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} |
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$this->getResult()->setIndexedTagName( $resultSets, 'set' ); |
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$this->getResult()->addValue( |
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null, |
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'sets', |
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$resultSets |
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); |
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} |
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/** |
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* Gets a list of change sets belonging to any of the watchlist groups |
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* watched by the user, newest first. |
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* |
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* @param mixed $filter User ID or array of group IDs |
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* @param boolean $isUserFilter |
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* @param integer $limit |
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* @param string $continue |
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*/ |
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protected function setupChangeSetQuery( $filter, $isUserFilter, $limit, $continue ) { |
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$tables = array( 'swl_edits', 'swl_sets_per_edit', 'swl_sets_per_group' ); |
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if ( $isUserFilter ) { |
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$tables[] = 'swl_users_per_group'; |
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} |
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$this->addTables( $tables ); |
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$this->addJoinConds( array( |
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'swl_sets_per_edit' => array( 'INNER JOIN', array( 'edit_id=spe_edit_id' ) ), |
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'swl_sets_per_group' => array( 'INNER JOIN', array( 'spe_set_id=spg_set_id' ) ), |
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) ); |
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if ( $isUserFilter ) { |
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$this->addJoinConds( array( |
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'swl_users_per_group' => array( 'INNER JOIN', array( 'spg_group_id=upg_group_id' ) ), |
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) ); |
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} |
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$this->addFields( array( |
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'spe_set_id', |
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'edit_user_name', |
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'edit_page_id', |
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'edit_time', |
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'edit_id' |
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) ); |
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$this->addWhere( array( |
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( $isUserFilter ? 'upg_user_id' : 'spg_group_id' ) => $filter |
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) ); |
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$this->addOption( 'DISTINCT' ); |
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$this->addOption( 'LIMIT', $limit + 1 ); |
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$this->addOption( 'ORDER BY', 'edit_time DESC, spe_set_id DESC' ); |
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if ( !is_null( $continue ) ) { |
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$continueParams = explode( '-', $continue ); |
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if ( count( $continueParams ) == 2 ) { |
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$dbr = wfGetDB( DB_REPLICA ); |
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$this->addWhere( 'edit_time <= ' . $dbr->addQuotes( $continueParams[0] ) ); |
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$this->addWhere( 'spe_set_id <= ' . $dbr->addQuotes( $continueParams[1] ) ); |
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} |
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else { |
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// TODO: error |
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} |
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} |
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} |
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/** |
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* Merge change sets belonging to the same edit into one sinlge change set. |
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* |
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* @since 0.1 |
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* |
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* @param array $sets |
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*/ |
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protected function mergeSets( array &$sets ) { |
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if ( count( $sets ) > 1 ) { |
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$setsPerEdits = array(); |
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// List the sets per edit. |
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foreach ( $sets as $set ) { |
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if ( !array_key_exists( $set->getEdit()->getId(), $setsPerEdits ) ) { |
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$setsPerEdits[$set->getEdit()->getId()] = array(); |
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} |
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$setsPerEdits[$set->getEdit()->getId()][] = $set; |
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} |
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$mergedSets = array(); |
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// For all edits with more then one set, merge all sets in the first one, |
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// and add it to the $mergedSets list. |
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foreach ( $setsPerEdits as $setsForEdit ) { |
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$setCount = count( $setsForEdit ); |
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if ( $setCount > 1 ) { |
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for ( $i = 1; $i < $setCount; $i++ ) { |
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$setsForEdit[0]->mergeInChangeSet( $setsForEdit[$i] ); |
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} |
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} |
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$mergedSets[] = $setsForEdit[0]; |
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} |
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$sets = $mergedSets; |
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} |
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} |
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/** |
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* (non-PHPdoc) |
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* @see includes/api/ApiBase#getAllowedParams() |
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*/ |
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public function getAllowedParams() { |
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return array ( |
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'userid' => array( |
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ApiBase::PARAM_TYPE => 'integer', |
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), |
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'groupids' => array( |
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ApiBase::PARAM_TYPE => 'integer', |
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ApiBase::PARAM_ISMULTI => true, |
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), |
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'merge' => array( |
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ApiBase::PARAM_TYPE => 'boolean', |
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ApiBase::PARAM_DFLT => false, |
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), |
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'limit' => array( |
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ApiBase :: PARAM_DFLT => 20, |
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ApiBase :: PARAM_TYPE => 'limit', |
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ApiBase :: PARAM_MIN => 1, |
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ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1, |
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ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2 |
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), |
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'continue' => null, |
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); |
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} |
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/** |
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* (non-PHPdoc) |
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* @see includes/api/ApiBase#getParamDescription() |
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*/ |
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public function getParamDescription() { |
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return array ( |
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'userid' => 'The ID of the user for which to return semantic watchlist data.', |
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'groupids' => 'The IDs of the groups for which to return semantic watchlist data.', |
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'merge' => 'Merge sets of changes that belong to the same edit?', |
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'continue' => 'Offset number from where to continue the query', |
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'limit' => 'Max amount of words to return', |
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); |
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} |
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/** |
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* (non-PHPdoc) |
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* @see includes/api/ApiBase#getDescription() |
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*/ |
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public function getDescription() { |
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return 'Returns a list of sets of changes for the either specified user of specified group(s).'; |
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} |
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/** |
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* (non-PHPdoc) |
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* @see includes/api/ApiBase#getExamples() |
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*/ |
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protected function getExamples() { |
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return array ( |
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'api.php?action=query&list=semanticwatchlist&swuserid=1', |
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'api.php?action=query&list=semanticwatchlist&swuserid=1&swlimit=42&swcontinue=20110514143957-9001', |
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'api.php?action=query&list=semanticwatchlist&swgroupids=1', |
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'api.php?action=query&list=semanticwatchlist&swgroupids=1|42&swlimit=34', |
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); |
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} |
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public function getVersion() { |
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return __CLASS__ . ': $Id$'; |
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} |
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} |
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