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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\taoTests\models\pack; |
23 | |
24 | use core_kernel_classes_Resource; |
25 | use taoTests_models_classes_TestsService; |
26 | use common_exception_NoImplementation; |
27 | use ReflectionClass; |
28 | use common_Exception; |
29 | use Exception; |
30 | |
31 | /** |
32 | * The Test Packer calls the packable class for the given test |
33 | * |
34 | * @package taoTests |
35 | * @author Bertrand Chevrier <bertrand@taotesting.com> |
36 | */ |
37 | class Packer |
38 | { |
39 | /** |
40 | * The test to pack |
41 | * @var core_kernel_classes_Resource |
42 | */ |
43 | private $test; |
44 | |
45 | |
46 | /** |
47 | * The test service |
48 | * @var \taoTests_models_classes_TestsService |
49 | */ |
50 | private $testService; |
51 | |
52 | /** |
53 | * Create a packer for a test |
54 | * @param core_kernel_classes_Resource $test |
55 | */ |
56 | public function __construct(core_kernel_classes_Resource $test) |
57 | { |
58 | $this->test = $test; |
59 | $this->testService = taoTests_models_classes_TestsService::singleton(); |
60 | } |
61 | |
62 | /** |
63 | * Get the packer for the test regarding it's implementation. |
64 | * |
65 | * @return Packable the test packer implementation |
66 | * @throws common_exception_NoImplementation |
67 | */ |
68 | private function getTestPacker() |
69 | { |
70 | |
71 | //look at the item model |
72 | $testModel = $this->testService->getTestModel($this->test); |
73 | if (is_null($testModel)) { |
74 | throw new common_exception_NoImplementation('No test model for test ' . $this->test->getUri()); |
75 | } |
76 | |
77 | //get the testModel implementation for this model |
78 | $impl = $this->testService->getTestModelImplementation($testModel); |
79 | if (is_null($impl)) { |
80 | throw new common_exception_NoImplementation('No implementation for model ' . $testModel->getUri()); |
81 | } |
82 | |
83 | //then retrieve the packer class and instantiate it |
84 | $packerClass = new ReflectionClass($impl->getPackerClass()); |
85 | if (is_null($packerClass) || !$packerClass->implementsInterface('oat\taoTests\models\pack\Packable')) { |
86 | throw new common_exception_NoImplementation('The packer class seems to be not implemented'); |
87 | } |
88 | |
89 | return $packerClass->newInstance(); |
90 | } |
91 | |
92 | /** |
93 | * Pack a test. |
94 | * |
95 | * @return TestPack of the test. It can be serialized directly. |
96 | * @throws common_Exception |
97 | */ |
98 | public function pack() |
99 | { |
100 | |
101 | try { |
102 | //call the factory to get the itemPacker implementation |
103 | $testPacker = $this->getTestPacker(); |
104 | |
105 | //then create the pack |
106 | $testPack = $testPacker->packTest($this->test); |
107 | } catch (Exception $e) { |
108 | throw new common_Exception('The test ' . $this->test->getUri() . ' cannot be packed : ' . $e->getMessage()); |
109 | } |
110 | |
111 | return $testPack; |
112 | } |
113 | } |