FulltextsearchPlugin.php

<?php

/**
 * This file is part of the {@link http://amsl.technology amsl} project.
 *
 * @author Sebastian Nuck
 * @copyright Copyright (c) 2015, {@link http://ub.uni-leipzig.de Leipzig University Library}
 * @license http://opensource.org/licenses/gpl-license.php GNU General Public License (GPL)
 */

require_once 'OntoWiki/Plugin.php';
require_once realpath(dirname(__FILE__)) . '/classes/IndexServiceConnector.php';

class FulltextsearchPlugin extends OntoWiki_Plugin
{

    public function onIndexAction($event)
    {
        $_owApp = OntoWiki::getInstance();
        $logger = $_owApp->getCustomLogger('fulltextsearch');
        $resource = $event->resource;
        $model = $event->model;
        $indexServiceConnector = new IndexServiceConnector($this->_privateConfig);
        $class = $this->findClass($event->resource);
        $return = $indexServiceConnector->triggerReindex($resource, $model, $class);
        $indexServiceConnector->finish();
        $logger->debug('onIndexAction: ' . print_r($return, true));
    }

    public function onDeleteResourceAction($event)
    {
        $model = $event->model;
        $indexServiceConnector = new IndexServiceConnector($this->_privateConfig);
        $resources = $event->resources;
        if (!is_array($resources)) {
            $resources = array($resources);
        }
        foreach ($resources as $resource) {
            OntoWiki::getInstance()->logger->info('FulltextsearchPlugin: resource ' . $resource . ' can be deleted');
            $indexServiceConnector->triggerDeleteResource($resource, $model);
        }

        $indexServiceConnector->finish();
    }

    public function onFullreindexAction($event)
    {
        $indexServiceConnector = new IndexServiceConnector($this->_privateConfig);
        $return = $indexServiceConnector->triggerFullreindex($this->_privateConfig);
        $indexServiceConnector->finish();
        return $return;
    }

    public function onReindexAction($event) {
        $indexServiceConnector = new IndexServiceConnector($this->_privateConfig);
        $return = $indexServiceConnector->triggerReindexClass($event->model);
        $indexServiceConnector->finish();
        return $return;
    }

    /**
     * Checks whether the resource still exists in another knowledge base.
     * @param  $resource
     * @return type of $resource
     */
    private function canBeDeleted($resource)
    {
        $_owApp = OntoWiki::getInstance();
        $store = $_owApp->erfurt->getStore();
        $selectedModel = $_owApp->selectedModel;
        $modelResource = new OntoWiki_Model_Resource($store, $selectedModel, (string)$resource);
        $predicates = $modelResource->getPredicates();
        if (count($predicates) == 0) {
            return true;
        } else {
            return false;
        }
    }

    /**
     * Find a class to a given resource uri.
     */
    public function findClass($resource)
    {
        $_owApp = OntoWiki::getInstance();
        $store = $_owApp->erfurt->getStore();
        $selectedModel = $_owApp->selectedModel;
        $modelResource = $selectedModel->getResource($resource);
        $description = $modelResource->getDescription();
        if (isset($description[$resource][EF_RDF_TYPE][0]['value'])) {
            $type = $description[$resource][EF_RDF_TYPE][0]['value'];
            if ($type !== null) {
                return $type;
            } else {
                return null;
            }
        } else {
            return null;
        }
    }
}