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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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declare(strict_types=1); |
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namespace EmberDb\Collection; |
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use EmberDb\Document; |
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use EmberDb\Exception; |
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use EmberDb\Filter\Filter; |
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class Collection |
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{ |
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/** @var MetaData */ |
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private $metaData; |
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/** @var string */ |
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private $name; |
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/** @var string */ |
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private $path; |
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public function __construct(string $name, string $path) |
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{ |
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$this->name = $name; |
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$this->path = $path; |
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$this->metaData = new MetaData($path . '/' . $name . 'meta.edb'); |
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} |
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public function insert($document) |
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{ |
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$this->writeEntries(array($document)); |
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} |
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public function insertMany($documents) |
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{ |
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$this->writeEntries($documents); |
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} |
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public function find(array $filter = []): array |
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{ |
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$documents = []; |
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$entries = $this->readEntries($filter); |
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foreach ($entries as $entry) { |
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$documents[] = new Document($entry); |
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} |
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return $documents; |
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} |
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public function remove() |
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{ |
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$filePath = $this->getCollectionFilePath(); |
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if (file_exists($filePath)) { |
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unlink($filePath); |
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} |
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} |
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private function readEntries(array $filterArray) |
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{ |
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$entries = array(); |
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$filter = new Filter($filterArray); |
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// Open file for reading |
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$collectionFilePath = $this->getCollectionFilePath(); |
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$file = fopen($collectionFilePath, 'r'); |
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// Read file line by line |
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while (($buffer = fgets($file)) !== false) { |
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$entry = json_decode(trim($buffer), true); |
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// Match entry against filter |
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if ($filter->matchesEntry($entry)) { |
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$entries[] = $entry; |
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} |
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} |
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if (!feof($file)) { |
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throw new Exception('File pointer does not point to end of file.'); |
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} |
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// Close file |
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fclose($file); |
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return $entries; |
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} |
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private function writeEntries($documents) |
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{ |
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// Open or create file for writing |
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$collectionFilePath = $this->getCollectionFilePath(); |
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$collectionFileHandle = fopen($collectionFilePath, 'a'); |
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// Add entries to end of file |
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foreach ($documents as $document) { |
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fwrite($collectionFileHandle, json_encode($document)."\n"); |
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} |
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// Close file |
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fclose($collectionFileHandle); |
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} |
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private function getCollectionFilePath() |
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{ |
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return $this->path . '/' . $this->name . '.edb'; |
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} |
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} |
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alexanderduring /
php-ember-db
