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1 |
1 | <?php |
2 | |
3 | declare(strict_types=1); |
4 | |
5 | /** |
6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License |
8 | * as published by the Free Software Foundation; under version 2 |
9 | * of the License (non-upgradable). |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
19 | * |
20 | * Copyright (c) 2013 (original work) Open Assessment Technologies S.A. |
21 | * |
22 | * @author "Patrick Plichart, <patrick@taotesting.com>" |
23 | * |
24 | * An Assessment Result is used to report the results of a candidate's interaction |
25 | * with a test and/or one or more items attempted. Information about the test is optional, |
26 | * in some systems it may be possible to interact with items that are not organized into a |
27 | * test at all. For example, items that are organized with learning resources and presented |
28 | * individually in a formative context. |
29 | */ |
30 | |
31 | // phpcs:disable PSR1.Classes.ClassDeclaration.MissingNamespace,Squiz.Classes.ValidClassName.NotCamelCaps |
32 | abstract class taoResultServer_models_classes_Variable implements JsonSerializable |
33 | { |
34 | public const CARDINALITY_SINGLE = 'single'; |
35 | public const CARDINALITY_MULTIPLE = 'multiple'; |
36 | public const CARDINALITY_ORDERED = 'ordered'; |
37 | public const CARDINALITY_RECORD = 'record'; |
38 | |
39 | public const TYPE_VARIABLE_INTEGER = 'integer'; |
40 | public const TYPE_VARIABLE_BOOLEAN = 'boolean'; |
41 | public const TYPE_VARIABLE_IDENTIFIER = 'identifier'; |
42 | public const TYPE_VARIABLE_DURATION = 'duration'; |
43 | public const TYPE_VARIABLE_FLOAT = 'float'; |
44 | |
45 | /** |
46 | * The purpose of an itemVariable is to report the value of the item variable with the given identifier. |
47 | * |
48 | * @var string|null |
49 | */ |
50 | protected $identifier; |
51 | |
52 | /** |
53 | * The cardinality of the variable, taken from the corresponding declaration or definition. |
54 | * |
55 | * @var string|null {single, multiple, ordered, record} |
56 | */ |
57 | protected $cardinality; |
58 | |
59 | /** |
60 | * The base type of the variable, taken from the corresponding declaration of definition. |
61 | * This value is omitted only for variables with record cardinality. |
62 | * |
63 | * @var string|null should move to an enumeration |
64 | */ |
65 | protected $baseType; |
66 | |
67 | /** |
68 | * The epoch when the variable has been last modified |
69 | * |
70 | * @var string|null |
71 | */ |
72 | protected $epoch; |
73 | |
74 | private bool $isExternallyGraded = false; |
75 | |
76 | abstract protected function getType(): string; |
77 | |
78 | public function setIdentifier(string $identifier): self |
79 | { |
80 | $this->identifier = $identifier; |
81 | |
82 | return $this; |
83 | } |
84 | |
85 | public function getIdentifier(): ?string |
86 | { |
87 | return $this->identifier; |
88 | } |
89 | |
90 | /** |
91 | * @throws common_exception_InvalidArgumentType |
92 | */ |
93 | public function setCardinality($cardinality = self::CARDINALITY_SINGLE): self |
94 | { |
95 | if ( |
96 | !in_array( |
97 | $cardinality, |
98 | [ |
99 | self::CARDINALITY_SINGLE, |
100 | self::CARDINALITY_MULTIPLE, |
101 | self::CARDINALITY_ORDERED, |
102 | self::CARDINALITY_RECORD, |
103 | ], |
104 | true |
105 | ) |
106 | ) { |
107 | throw new common_exception_InvalidArgumentType('cardinality'); |
108 | } |
109 | |
110 | $this->cardinality = $cardinality; |
111 | |
112 | return $this; |
113 | } |
114 | |
115 | public function getCardinality(): ?string |
116 | { |
117 | return $this->cardinality; |
118 | } |
119 | |
120 | public function setBaseType(string $baseType): self |
121 | { |
122 | $this->baseType = $baseType; |
123 | |
124 | return $this; |
125 | } |
126 | |
127 | public function getBaseType(): ?string |
128 | { |
129 | return $this->baseType; |
130 | } |
131 | |
132 | public function setEpoch(string $epoch): self |
133 | { |
134 | $this->epoch = $epoch; |
135 | |
136 | return $this; |
137 | } |
138 | |
139 | public function getEpoch(): ?string |
140 | { |
141 | return $this->epoch; |
142 | } |
143 | |
144 | public function getCreationTime(): ?float |
145 | { |
146 | if (!isset($this->epoch)) { |
147 | return null; |
148 | } |
149 | [$usec, $sec] = explode(' ', $this->epoch); |
150 | |
151 | return ((float)$usec + (float)$sec); |
152 | } |
153 | |
154 | public function isSetEpoch(): bool |
155 | { |
156 | return (isset($this->epoch)); |
157 | } |
158 | |
159 | public function isMultiple(): bool |
160 | { |
161 | return in_array($this->cardinality, [self::CARDINALITY_MULTIPLE, self::CARDINALITY_ORDERED], true); |
162 | } |
163 | |
164 | /** |
165 | * get the value of the variable |
166 | * |
167 | * @return mixed |
168 | */ |
169 | abstract public function getValue(); |
170 | |
171 | /** |
172 | * Set the value of the variable |
173 | * |
174 | * @param $value mixed |
175 | */ |
176 | abstract public function setValue($value); |
177 | |
178 | /** |
179 | * @deprecated Use jsonSerialize method instead |
180 | */ |
181 | public function toJson(): string |
182 | { |
183 | return json_encode($this); |
184 | } |
185 | |
186 | /** |
187 | * {@inheritdoc} |
188 | */ |
189 | public function jsonSerialize() |
190 | { |
191 | return [ |
192 | 'identifier' => $this->identifier, |
193 | 'cardinality' => $this->cardinality, |
194 | 'baseType' => $this->baseType, |
195 | 'epoch' => $this->epoch, |
196 | 'type' => $this->getType(), |
197 | 'externallyGraded' => $this->getExternallyGraded(), |
198 | ]; |
199 | } |
200 | |
201 | /** |
202 | * @return taoResultServer_models_classes_OutcomeVariable|taoResultServer_models_classes_ResponseVariable|taoResultServer_models_classes_TraceVariable |
203 | * @throws common_exception_InvalidArgumentType |
204 | * @throws LogicException |
205 | */ |
206 | public static function fromData(array $rawVariable) |
207 | { |
208 | self::validateKeys(['identifier', 'cardinality', 'baseType', 'epoch', 'type'], $rawVariable); |
209 | |
210 | switch ($rawVariable['type']) { |
211 | case taoResultServer_models_classes_OutcomeVariable::TYPE: |
212 | $variable = self::fromOutcomeVariableData($rawVariable); |
213 | break; |
214 | case taoResultServer_models_classes_ResponseVariable::TYPE: |
215 | $variable = self::fromResponseVariableData($rawVariable); |
216 | break; |
217 | case taoResultServer_models_classes_TraceVariable::TYPE: |
218 | $variable = self::fromTraceVariableData($rawVariable); |
219 | break; |
220 | default: |
221 | throw new \LogicException(sprintf('Unsupported variable type: %s', $rawVariable['type'])); |
222 | } |
223 | |
224 | if (isset($rawVariable['baseType'])) { |
225 | $variable->setBaseType($rawVariable['baseType']); |
226 | } |
227 | |
228 | return $variable |
229 | ->setIdentifier($rawVariable['identifier']) |
230 | ->setCardinality($rawVariable['cardinality']) |
231 | ->setEpoch($rawVariable['epoch']); |
232 | } |
233 | |
234 | /** |
235 | * @throws LogicException |
236 | */ |
237 | protected static function validateKeys(array $keys, array $data): void |
238 | { |
239 | foreach ($keys as $key) { |
240 | if (!array_key_exists($key, $data)) { |
241 | throw new LogicException(sprintf('Key "%s" is not defined in variable data.', $key)); |
242 | } |
243 | } |
244 | } |
245 | |
246 | private static function fromOutcomeVariableData( |
247 | array $rawOutcomeVariable |
248 | ): taoResultServer_models_classes_OutcomeVariable { |
249 | self::validateKeys(['normalMinimum', 'normalMaximum', 'value'], $rawOutcomeVariable); |
250 | |
251 | return (new taoResultServer_models_classes_OutcomeVariable()) |
252 | ->setNormalMinimum($rawOutcomeVariable['normalMinimum']) |
253 | ->setNormalMaximum($rawOutcomeVariable['normalMaximum']) |
254 | ->setEncodedValue($rawOutcomeVariable['value']) |
255 | ->setExternallyGraded($rawOutcomeVariable['externallyGraded'] ?? false); |
256 | } |
257 | |
258 | private static function fromResponseVariableData( |
259 | array $rawResponseVariable |
260 | ): taoResultServer_models_classes_ResponseVariable { |
261 | self::validateKeys(['correctResponse', 'candidateResponse'], $rawResponseVariable); |
262 | |
263 | return (new taoResultServer_models_classes_ResponseVariable()) |
264 | ->setCorrectResponse($rawResponseVariable['correctResponse']) |
265 | ->setEncodedCandidateResponse($rawResponseVariable['candidateResponse']); |
266 | } |
267 | |
268 | private static function fromTraceVariableData(array $rawTraceVariable): taoResultServer_models_classes_TraceVariable |
269 | { |
270 | self::validateKeys(['trace'], $rawTraceVariable); |
271 | |
272 | return (new taoResultServer_models_classes_TraceVariable())->setTrace($rawTraceVariable['trace']); |
273 | } |
274 | |
275 | public function setExternallyGraded(bool $flag): self |
276 | { |
277 | $this->isExternallyGraded = $flag; |
278 | |
279 | return $this; |
280 | } |
281 | |
282 | public function getExternallyGraded(): bool |
283 | { |
284 | return $this->isExternallyGraded; |
285 | } |
286 | } |