root/solr/files/lib/data/solr/SolrBridge.php @ 1184

<?php

/**
 *
 */     
class SolrBridge {
        
        /**
         * 
         * @var array<Apache_Solr_Document>
         */
        protected $documents = array();
        
        /**
         *
         * @var SolrService
         */
        protected $solr = null;
        
        /**
         *
         */
        public function __construct() {
        
                // load search type objects
                SearchEngne::getSearchTypes();
                
                $path = parse_url(SOLR_URL);
                $this->solr = new SolrService($path['host'], isset($path['port']) ? $path['port'] : 80, $path['path']);
        }
        
        /**
         *
         */
        protected function commit() {
                $this->solr->addDocuments( $this->documents );
                $this->solr->commit();
                
                // mark items as done
                $sql = "INSERT IGNORE INTO
                                        wcf".WCF_N."_solr_index
                                        (typeName, messageID)";
                foreach($this->documents as $doc) {
                        $sql .= ""; //TODO: mark as done
                }
                $result = WCF::getDB()->sendQuery($sql);
                
                // reset array
                $this->documents = array();
                
                $this->solr->optimize();
        }
        
        /**
         *
         */
        protected function getTotals(array $types) {

                $sql = '';
                foreach ($types as $type) {

                        // get search type object
                        $doc = SearchEngine::$searchTypeObjects[$type];
                        if (!$doc->isAccessible()) continue;
                        if (!empty($sql)) $sql .= "\nUNION\n";
                        
                        // get field names
                        $messageIDFieldName = $doc->getIDFieldName();
                        $messageIDFieldName = strpos($messageIDFieldName, '.') !== false ? $messageIDFieldName : "messageTable.".$messageIDFieldName;
                        
                        $sql .= "(      
                                SELECT          MAX(".$messageIDFieldName.") AS messageID,
                                                '".$type."' AS messageType
                                FROM            ".$doc->getTableName()." messageTable
                                                ".$doc->getJoins()."
                                WHERE           1
                                                ".(!empty($conditions[$type]) ? " ".(!empty($q) ? "AND" : "")." (".$conditions[$type].")" : "")."
                                GROUP BY        messageID
                        )";
                }
                
                // send search query
                $types = array();
                $result = WCF::getDB()->sendQuery($sql, $limit);
                while ($row = WCF::getDB()->fetchArray($result)) {
                        $types[$row['messageType']] = $row['messageID'];
                }
                
                return $types;
        }
        
        /**
         *
         */
        public function loadDocuments($type, $min, $max) {
                // get search type object
                $doc = SearchEngine::$searchTypeObjects[$type];
                if (!$doc->isAccessible()) continue;
                
                // get field names
                $messageIDFieldName = $doc->getIDFieldName();
                $messageIDFieldName = strpos($messageIDFieldName, '.') !== false ? $messageIDFieldName : "messageTable.".$messageIDFieldName;
                $subjectFieldNames = $doc->getSubjectFieldNames();
                $messageFieldNames = $doc->getMessageFieldNames();
                $userIDFieldName = $doc->getUserIDFieldName();
                $usernameFieldName = $doc->getUsernameFieldName();
                $timeFieldName = $doc->getTimeFieldName();
                
                $sql = "SELECT          
                                        '".$type."' AS messageType,
                                        ".$messageIDFieldName." AS messageID,
                                        CAST(messageTable.".reset($subjectFieldNames)." AS CHAR CHARACTER SET ".WCF::getDB()->getCharset().") AS subject,
                                        CAST(messageTable.".reset($messageFieldNames)." AS CHAR CHARACTER SET ".WCF::getDB()->getCharset().") AS message,
                                        ".$userIDFieldName." AS userID,
                                        CAST(".$usernameFieldName." AS CHAR CHARACTER SET ".WCF::getDB()->getCharset().") AS username,
                                        ".$timeFieldName." AS time
                        FROM            ".$doc->getTableName()." messageTable
                                        ".$doc->getJoins()."
                        WHERE           ".$messageIDFieldName." BETWEEN $min AND $max
                                        ".(!empty($conditions[$type]) ? " ".(!empty($q) ? "AND" : "")." (".$conditions[$type].")" : "")."
                        GROUP BY        messageID";

                $result = WCF::getDB()->sendQuery($sql, $limit);
                while ($row = WCF::getDB()->fetchArray($result)) {
                        $this->addDocument($row);
                }
        }
        
        /**
         *
         */
        protected function addDocument($fields) {
                $part = new Apache_Solr_Document();
                foreach ( $fields as $key => $value ) {
                        if ( is_array( $value ) ) {
                                foreach ( $value as $deppval ) {
                                        $part->setMultiValue( $key, $deppval );
                                }
                        }
                        else {
                                $part->$key = $value;
                        }
                }
                
                $this->documents[] = $part;
        }
        
        /**
         *
         */
        public function doCrawl($types, $limit) {
                foreach($this->getIndexStatus($types) as $typeName => $status) {
                
                        // nothing to do?
                        if($row['total'] == $row['current']) {
                                continue;
                        }
                        
                        if (!isset(SearchEngine::$searchTypeObjects[$type])) {
                                throw new SystemException('unknown search type '.$type, 101001);
                        }
                        
                        $this->loadDocuments($row['current'] + 1, min($row['total'], $row['current'] + 1 + $limit));
                
                        // write to solr
                        $this->commit();
                }
        }
        
        /**
         * 
         */
        public function getIndexStatus($types = null) {
                
                // read available types
                $status = array();
                
                // get types
                $types = is_array($types) ? $types : SearchEngine::getSearchTypes();
                
                // set counters to zero
                foreach ($types as $type) {
                        $status[$type] = array(
                                'current' => 0,
                                'total' => 0,
                        );
                }
                
                // read current status
                
                while ($row = WCF::getDB()->fetchArray($result)) {
                        $typeName = $row['typeName'];
                        $status[$typeName]['current'] = $row['messageID'];
                }

                // read totals
                foreach ($this->getTotals($type) as $typeName => $total) {
                        $status[$typeName]['total'] = $row['messageID'];
                }
                
                return $messages;
        }
}
?>