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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Andrew Brown <andrew@casabrown.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC;
use OCP\Search\PagedProvider;
use OCP\Search\Provider;
use OCP\ISearch;
/**
* Provide an interface to all search providers
*/
class Search implements ISearch {
private $providers = array();
private $registeredProviders = array();
/**
* Search all providers for $query
* @param string $query
* @param string[] $inApps optionally limit results to the given apps
* @return array An array of OC\Search\Result's
*/
public function search($query, array $inApps = array()) {
// old apps might assume they get all results, so we set size 0
return $this->searchPaged($query, $inApps, 1, 0);
}
/**
* Search all providers for $query
* @param string $query
* @param string[] $inApps optionally limit results to the given apps
* @param int $page pages start at page 1
* @param int $size, 0 = all
* @return array An array of OC\Search\Result's
*/
public function searchPaged($query, array $inApps = array(), $page = 1, $size = 30) {
$this->initProviders();
$results = array();
foreach($this->providers as $provider) {
/** @var $provider Provider */
if ( ! $provider->providesResultsFor($inApps) ) {
continue;
}
if ($provider instanceof PagedProvider) {
$results = array_merge($results, $provider->searchPaged($query, $page, $size));
} else if ($provider instanceof Provider) {
$providerResults = $provider->search($query);
if ($size > 0) {
$slicedResults = array_slice($providerResults, ($page - 1) * $size, $size);
$results = array_merge($results, $slicedResults);
} else {
$results = array_merge($results, $providerResults);
}
} else {
\OC::$server->getLogger()->warning('Ignoring Unknown search provider', array('provider' => $provider));
}
}
return $results;
}
/**
* Remove all registered search providers
*/
public function clearProviders() {
$this->providers = array();
$this->registeredProviders = array();
}
/**
* Remove one existing search provider
* @param string $provider class name of a OC\Search\Provider
*/
public function removeProvider($provider) {
$this->registeredProviders = array_filter(
$this->registeredProviders,
function ($element) use ($provider) {
return ($element['class'] != $provider);
}
);
// force regeneration of providers on next search
$this->providers = array();
}
/**
* Register a new search provider to search with
* @param string $class class name of a OC\Search\Provider
* @param array $options optional
*/
public function registerProvider($class, array $options = array()) {
$this->registeredProviders[] = array('class' => $class, 'options' => $options);
}
/**
* Create instances of all the registered search providers
*/
private function initProviders() {
if( ! empty($this->providers) ) {
return;
}
foreach($this->registeredProviders as $provider) {
$class = $provider['class'];
$options = $provider['options'];
$this->providers[] = new $class($options);
}
}
}
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