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1 | <?php |
2 | |
3 | /** |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; under version 2 |
7 | * of the License (non-upgradable). |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | * |
18 | * Copyright (c) 2015 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
19 | * |
20 | */ |
21 | |
22 | namespace oat\taoItems\model\pack; |
23 | |
24 | use core_kernel_classes_Resource; |
25 | use oat\oatbox\filesystem\Directory; |
26 | use taoItems_models_classes_ItemsService; |
27 | use common_exception_NoImplementation; |
28 | use common_Exception; |
29 | use Exception; |
30 | use Zend\ServiceManager\ServiceLocatorAwareInterface; |
31 | use Zend\ServiceManager\ServiceLocatorAwareTrait; |
32 | |
33 | /** |
34 | * The Item Pack represents the item package data produced by the compilation. |
35 | * |
36 | * @package taoItems |
37 | * @author Bertrand Chevrier <bertrand@taotesting.com> |
38 | */ |
39 | class Packer implements ServiceLocatorAwareInterface |
40 | { |
41 | use ServiceLocatorAwareTrait; |
42 | |
43 | /** |
44 | * The item to pack |
45 | * @var core_kernel_classes_Resource |
46 | */ |
47 | private $item; |
48 | |
49 | /** |
50 | * The lang of the item to pack |
51 | * @var string |
52 | */ |
53 | private $lang; |
54 | |
55 | /** |
56 | * The item service |
57 | * @var taoItems_models_classes_ItemsService |
58 | */ |
59 | private $itemService; |
60 | |
61 | /** @var bool */ |
62 | private $skipValidation; |
63 | |
64 | /** |
65 | * Create a packer for an item |
66 | * |
67 | * @param core_kernel_classes_Resource $item |
68 | * @param string $lang |
69 | */ |
70 | public function __construct(core_kernel_classes_Resource $item, $lang = '', bool $skipValidation = false) |
71 | { |
72 | $this->item = $item; |
73 | $this->lang = $lang; |
74 | $this->itemService = taoItems_models_classes_ItemsService::singleton(); |
75 | $this->skipValidation = $skipValidation; |
76 | } |
77 | |
78 | /** |
79 | * Get the packer for the item regarding it's implementation. |
80 | * |
81 | * @return ItemPacker the item packer implementation |
82 | * @throws common_exception_NoImplementation |
83 | */ |
84 | protected function getItemPacker() |
85 | { |
86 | |
87 | //look at the item model |
88 | $itemModel = $this->itemService->getItemModel($this->item); |
89 | if (is_null($itemModel)) { |
90 | throw new common_exception_NoImplementation('No item model for item ' . $this->item->getUri()); |
91 | } |
92 | |
93 | //get the itemModel implementation for this model |
94 | $impl = $this->itemService->getItemModelImplementation($itemModel); |
95 | if (is_null($impl)) { |
96 | throw new common_exception_NoImplementation('No implementation for model ' . $itemModel->getUri()); |
97 | } |
98 | |
99 | //then retrieve the packer class and instantiate it |
100 | $packerClass = $impl->getPackerClass(); |
101 | if (is_null($packerClass) || get_parent_class($packerClass) !== 'oat\taoItems\model\pack\ItemPacker') { |
102 | throw new common_exception_NoImplementation('The packer class seems to be not implemented'); |
103 | } |
104 | |
105 | return new $packerClass(); |
106 | } |
107 | |
108 | /** |
109 | * Pack an item. |
110 | * @param array $assetEncoders the list of encoders to use in packing (configure the item packer) |
111 | * @param boolean $nestedResourcesInclusion |
112 | * @return ItemPack of the item. It can be serialized directly. |
113 | * @throws common_Exception |
114 | */ |
115 | public function pack($assetEncoders = [], $nestedResourcesInclusion = true) |
116 | { |
117 | |
118 | try { |
119 | //call the factory to get the itemPacker implementation |
120 | $itemPacker = $this->getItemPacker(); |
121 | |
122 | $itemPacker->setAssetEncoders($assetEncoders); |
123 | $itemPacker->setNestedResourcesInclusion($nestedResourcesInclusion); |
124 | $itemPacker->setSkipValidation($this->skipValidation); |
125 | |
126 | //then create the pack |
127 | $itemPack = $itemPacker->packItem($this->item, $this->lang, $this->getStorageDirectory()); |
128 | } catch (Exception $e) { |
129 | throw new common_Exception('The item ' . $this->item->getUri() . ' cannot be packed : ' . $e->getMessage()); |
130 | } |
131 | |
132 | return $itemPack; |
133 | } |
134 | |
135 | /** |
136 | * @return Directory |
137 | * @throws \Exception |
138 | */ |
139 | protected function getStorageDirectory() |
140 | { |
141 | /** @var \oat\oatbox\filesystem\Directory $directory */ |
142 | $directory = $this->itemService->getItemDirectory($this->item, $this->lang); |
143 | |
144 | //we should use be language unaware for storage manipulation |
145 | $path = str_replace($this->lang, '', $directory->getPrefix()); |
146 | |
147 | return $this->itemService->getDefaultItemDirectory()->getDirectory($path); |
148 | } |
149 | } |