nextcloud/lib/public/search/provider.php

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<?php
/**
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* @author Andrew Brown <andrew@casabrown.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Jakob Sack <mail@jakobsack.de>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
*
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* 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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
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* 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/>
*
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*/
namespace OCP\Search;
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/**
* Provides a template for search functionality throughout ownCloud;
* @since 7.0.0
*/
abstract class Provider {
/**
* @since 8.0.0
*/
const OPTION_APPS = 'apps';
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/**
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* List of options
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* @var array
* @since 7.0.0
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*/
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protected $options;
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/**
* Constructor
* @param array $options as key => value
* @since 7.0.0 - default value for $options was added in 8.0.0
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*/
public function __construct($options = array()) {
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$this->options = $options;
}
/**
* get a value from the options array or null
* @param string $key
* @return mixed
* @since 8.0.0
*/
public function getOption($key) {
if (is_array($this->options) && isset($this->options[$key])) {
return $this->options[$key];
} else {
return null;
}
}
/**
* checks if the given apps and the apps this provider has results for intersect
* returns true if the given array is empty (all apps)
* or if this provider does not have a list of apps it provides results for (legacy search providers)
* or if the two above arrays have elements in common (intersect)
* @param string[] $apps
* @return bool
* @since 8.0.0
*/
public function providesResultsFor(array $apps = array()) {
$forApps = $this->getOption(self::OPTION_APPS);
return empty($apps) || empty($forApps) || array_intersect($forApps, $apps);
}
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/**
* Search for $query
* @param string $query
* @return array An array of OCP\Search\Result's
* @since 7.0.0
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*/
abstract public function search($query);
}