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<?php |
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/** |
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* Ember Db - An embeddable document database for php. |
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* Copyright (C) 2016 Alexander During |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @link http://github.com/alexanderduring/php-ember-db |
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* @copyright Copyright (C) 2016 Alexander During |
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* @license http://www.gnu.org/licenses GNU General Public License v3.0 |
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*/ |
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namespace EmberDb; |
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class Document |
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{ |
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private $data; |
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/** |
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* @param array $data |
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*/ |
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public function __construct($data = array()) |
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{ |
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$this->data = $data; |
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} |
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/** |
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* @param string $path 'comma.separated.path.to.value' |
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* @return boolean |
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*/ |
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public function has($path) |
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{ |
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$exists = true; |
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$subtree = $this->data; |
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$segments = $this->getPathSegments($path); |
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foreach ($segments as $key) { |
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if (!array_key_exists($key, $subtree)) { |
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$exists = false; |
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} else { |
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$subtree = $subtree[$key]; |
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} |
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} |
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return $exists; |
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} |
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/** |
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* @param string $path 'comma.separated.path.to.value' |
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* @return array|mixed |
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*/ |
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public function get($path) |
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{ |
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$subtree = $this->data; |
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$segments = $this->getPathSegments($path); |
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foreach ($segments as $key) { |
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$subtree = $subtree[$key]; |
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} |
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return $subtree; |
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} |
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/** |
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* This method allows you to set a value in the document by using this syntax: |
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* |
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* set('path.to.level', 'myValue') |
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* |
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* ... does nothing else than ... |
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* |
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* document[path][to][level] = 'myValue' |
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* |
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* Because the path is translated into an array structure in interations |
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* we need to store the reference to each intermediate array field |
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* for usage in the next iteration. |
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* |
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* @param string $path 'comma.separated.path.to.value' |
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* @param mixed $value The value to store |
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* @return boolean |
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*/ |
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public function set($path, $value) |
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{ |
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$subtree = &$this->data; |
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$segments = $this->getPathSegments($path); |
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$lastKey = array_pop($segments); |
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foreach ($segments as $key) { |
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if (array_key_exists($key, $subtree)) { |
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if (!is_array($subtree[$key])) { |
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return false; |
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} |
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$subtree = &$subtree[$key]; |
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} else { |
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$subtree[$key] = array(); |
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$subtree = &$subtree[$key]; |
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} |
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} |
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$subtree[$lastKey] = $value; |
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} |
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public function toJson() |
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{ |
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return json_encode($this->data); |
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} |
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public function toArray() |
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{ |
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return $this->data; |
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} |
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/** |
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* @param string $path |
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* @return array |
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*/ |
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private function getPathSegments($path) |
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{ |
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trim($path, '.'); |
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$segments = explode('.', $path); |
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return $segments; |
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} |
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} |
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alexanderduring /
php-ember-db
