97 lines
No EOL
2.3 KiB
PHP
97 lines
No EOL
2.3 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2010, The volkszaehler.org project
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* @package util
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* @license http://www.gnu.org/licenses/gpl.txt GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org 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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* any later version.
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*
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* volkzaehler.org 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 volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Volkszaehler\Util;
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/**
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* @author Steffen Vogel <info@steffenvogel.de>
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* @package util
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*/
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abstract class Definition {
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/** @var string discriminator for database column */
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protected $name;
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/** @var string title for UI */
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protected $title;
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/** @var string description for UI */
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protected $description;
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/**
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* Hide default constructor
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*
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* @param array $object to cast from
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*/
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protected function __construct($object) {
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foreach (get_object_vars($object) as $name => $value) {
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if (property_exists(get_class($this), $name)) {
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$this->$name = $value;
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}
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else {
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throw new \Exception('unknown definition syntax: ' . $name);
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}
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}
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}
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/**
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* Factory method for creating new instances
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*
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* @param string $name
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* @return Util\Definition
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*/
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public static function get($name) {
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if (!static::exists($name)) {
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throw new \Exception('unknown definition');
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}
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return static::$definitions[$name];
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}
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/**
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* Checks if $name is defined
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* @param string $name
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*/
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public static function exists($name) {
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if (is_null(static::$definitions)) {
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static::load();
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}
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return isset(static::$definitions[$name]);
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}
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/**
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* Load JSON definitions from file (via lazy loading from get())
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*/
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protected static function load() {
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$json = JSON::decode(file_get_contents(VZ_DIR . static::FILE));
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static::$definitions = array();
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foreach ($json as $property) {
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static::$definitions[$property->name] = new static($property);
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}
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}
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}
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?>
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