1 | <?php |
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2 | |||
3 | /* |
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4 | * This file is part of the API Platform project. |
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5 | * |
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6 | * (c) Kévin Dunglas <[email protected]> |
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7 | * |
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8 | * For the full copyright and license information, please view the LICENSE |
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9 | * file that was distributed with this source code. |
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10 | */ |
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11 | |||
12 | declare(strict_types=1); |
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13 | |||
14 | namespace ApiPlatform\Core\Hal\Serializer; |
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15 | |||
16 | use ApiPlatform\Core\Serializer\AbstractItemNormalizer; |
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17 | use ApiPlatform\Core\Serializer\CacheKeyTrait; |
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18 | use ApiPlatform\Core\Serializer\ContextTrait; |
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19 | use ApiPlatform\Core\Util\ClassInfoTrait; |
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20 | use Symfony\Component\Serializer\Exception\LogicException; |
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21 | use Symfony\Component\Serializer\Exception\UnexpectedValueException; |
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22 | use Symfony\Component\Serializer\Mapping\AttributeMetadataInterface; |
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23 | |||
24 | /** |
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25 | * Converts between objects and array including HAL metadata. |
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26 | * |
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27 | * @author Kévin Dunglas <[email protected]> |
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28 | */ |
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29 | final class ItemNormalizer extends AbstractItemNormalizer |
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30 | { |
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31 | use CacheKeyTrait; |
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32 | use ClassInfoTrait; |
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33 | use ContextTrait; |
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34 | |||
35 | public const FORMAT = 'jsonhal'; |
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36 | |||
37 | private $componentsCache = []; |
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38 | private $attributesMetadataCache = []; |
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39 | |||
40 | /** |
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41 | * {@inheritdoc} |
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42 | */ |
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43 | public function supportsNormalization($data, $format = null): bool |
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44 | { |
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45 | return self::FORMAT === $format && parent::supportsNormalization($data, $format); |
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46 | } |
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47 | |||
48 | /** |
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49 | * {@inheritdoc} |
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50 | */ |
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51 | public function normalize($object, $format = null, array $context = []) |
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52 | { |
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53 | if (null !== $this->getOutputClass($this->getObjectClass($object), $context)) { |
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54 | return parent::normalize($object, $format, $context); |
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55 | } |
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56 | |||
57 | if (!isset($context['cache_key'])) { |
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58 | $context['cache_key'] = $this->getCacheKey($format, $context); |
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59 | } |
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60 | |||
61 | $resourceClass = $this->resourceClassResolver->getResourceClass($object, $context['resource_class'] ?? null); |
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62 | $context = $this->initContext($resourceClass, $context); |
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63 | $iri = $this->iriConverter->getIriFromItem($object); |
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64 | $context['iri'] = $iri; |
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65 | $context['api_normalize'] = true; |
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66 | |||
67 | $data = parent::normalize($object, $format, $context); |
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68 | if (!\is_array($data)) { |
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69 | return $data; |
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70 | } |
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71 | |||
72 | $metadata = [ |
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73 | '_links' => [ |
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74 | 'self' => [ |
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75 | 'href' => $iri, |
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76 | ], |
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77 | ], |
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78 | ]; |
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79 | $components = $this->getComponents($object, $format, $context); |
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80 | $metadata = $this->populateRelation($metadata, $object, $format, $context, $components, 'links'); |
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81 | $metadata = $this->populateRelation($metadata, $object, $format, $context, $components, 'embedded'); |
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82 | |||
83 | return $metadata + $data; |
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84 | } |
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85 | |||
86 | /** |
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87 | * {@inheritdoc} |
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88 | */ |
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89 | public function supportsDenormalization($data, $type, $format = null): bool |
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90 | { |
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91 | // prevent the use of lower priority normalizers (e.g. serializer.normalizer.object) for this format |
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92 | return self::FORMAT === $format; |
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93 | } |
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94 | |||
95 | /** |
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96 | * {@inheritdoc} |
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97 | * |
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98 | * @throws LogicException |
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99 | */ |
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100 | public function denormalize($data, $class, $format = null, array $context = []) |
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101 | { |
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102 | throw new LogicException(sprintf('%s is a read-only format.', self::FORMAT)); |
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103 | } |
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104 | |||
105 | /** |
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106 | * {@inheritdoc} |
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107 | */ |
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108 | protected function getAttributes($object, $format = null, array $context): array |
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109 | { |
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110 | return $this->getComponents($object, $format, $context)['states']; |
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111 | } |
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112 | |||
113 | /** |
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114 | * Gets HAL components of the resource: states, links and embedded. |
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115 | * |
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116 | * @param object $object |
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117 | */ |
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118 | private function getComponents($object, ?string $format, array $context): array |
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119 | { |
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120 | $cacheKey = $this->getObjectClass($object).'-'.$context['cache_key']; |
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121 | |||
122 | if (isset($this->componentsCache[$cacheKey])) { |
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123 | return $this->componentsCache[$cacheKey]; |
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124 | } |
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125 | |||
126 | $attributes = parent::getAttributes($object, $format, $context); |
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127 | $options = $this->getFactoryOptions($context); |
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128 | |||
129 | $components = [ |
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130 | 'states' => [], |
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131 | 'links' => [], |
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132 | 'embedded' => [], |
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133 | ]; |
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134 | |||
135 | foreach ($attributes as $attribute) { |
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136 | $propertyMetadata = $this->propertyMetadataFactory->create($context['resource_class'], $attribute, $options); |
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137 | |||
138 | $type = $propertyMetadata->getType(); |
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139 | $isOne = $isMany = false; |
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140 | |||
141 | if (null !== $type) { |
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142 | if ($type->isCollection()) { |
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143 | $valueType = $type->getCollectionValueType(); |
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144 | $isMany = null !== $valueType && ($className = $valueType->getClassName()) && $this->resourceClassResolver->isResourceClass($className); |
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145 | } else { |
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146 | $className = $type->getClassName(); |
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147 | $isOne = $className && $this->resourceClassResolver->isResourceClass($className); |
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148 | } |
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149 | } |
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150 | |||
151 | if (!$isOne && !$isMany) { |
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152 | $components['states'][] = $attribute; |
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153 | continue; |
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154 | } |
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155 | |||
156 | $relation = ['name' => $attribute, 'cardinality' => $isOne ? 'one' : 'many']; |
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157 | if ($propertyMetadata->isReadableLink()) { |
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158 | $components['embedded'][] = $relation; |
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159 | } |
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160 | |||
161 | $components['links'][] = $relation; |
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162 | } |
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163 | |||
164 | if (false !== $context['cache_key']) { |
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165 | $this->componentsCache[$cacheKey] = $components; |
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166 | } |
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167 | |||
168 | return $components; |
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169 | } |
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170 | |||
171 | /** |
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172 | * Populates _links and _embedded keys. |
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173 | * |
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174 | * @param object $object |
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175 | */ |
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176 | private function populateRelation(array $data, $object, ?string $format, array $context, array $components, string $type): array |
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177 | { |
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178 | $class = $this->getObjectClass($object); |
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179 | |||
180 | $attributesMetadata = \array_key_exists($class, $this->attributesMetadataCache) ? |
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181 | $this->attributesMetadataCache[$class] : |
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182 | $this->attributesMetadataCache[$class] = $this->classMetadataFactory ? $this->classMetadataFactory->getMetadataFor($class)->getAttributesMetadata() : null; |
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183 | |||
184 | $key = '_'.$type; |
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185 | foreach ($components[$type] as $relation) { |
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186 | if (null !== $attributesMetadata && $this->isMaxDepthReached($attributesMetadata, $class, $relation['name'], $context)) { |
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187 | continue; |
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188 | } |
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189 | |||
190 | $attributeValue = $this->getAttributeValue($object, $relation['name'], $format, $context); |
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191 | if (empty($attributeValue)) { |
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192 | continue; |
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193 | } |
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194 | |||
195 | $relationName = $relation['name']; |
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196 | if ($this->nameConverter) { |
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197 | $relationName = $this->nameConverter->normalize($relationName, $class, $format, $context); |
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198 | } |
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199 | |||
200 | if ('one' === $relation['cardinality']) { |
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201 | if ('links' === $type) { |
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202 | $data[$key][$relationName]['href'] = $this->getRelationIri($attributeValue); |
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203 | continue; |
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204 | } |
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205 | |||
206 | $data[$key][$relationName] = $attributeValue; |
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207 | continue; |
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208 | } |
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209 | |||
210 | // many |
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211 | $data[$key][$relationName] = []; |
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212 | foreach ($attributeValue as $rel) { |
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213 | if ('links' === $type) { |
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214 | $rel = ['href' => $this->getRelationIri($rel)]; |
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215 | } |
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216 | |||
217 | $data[$key][$relationName][] = $rel; |
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218 | } |
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219 | } |
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220 | |||
221 | return $data; |
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222 | } |
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223 | |||
224 | /** |
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225 | * Gets the IRI of the given relation. |
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226 | * |
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227 | * @throws UnexpectedValueException |
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228 | */ |
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229 | private function getRelationIri($rel): string |
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230 | { |
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231 | if (!(\is_array($rel) || \is_string($rel))) { |
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232 | throw new UnexpectedValueException('Expected relation to be an IRI or array'); |
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233 | } |
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234 | |||
235 | return \is_string($rel) ? $rel : $rel['_links']['self']['href']; |
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236 | } |
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237 | |||
238 | /** |
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239 | * Is the max depth reached for the given attribute? |
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240 | * |
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241 | * @param AttributeMetadataInterface[] $attributesMetadata |
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242 | */ |
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243 | private function isMaxDepthReached(array $attributesMetadata, string $class, string $attribute, array &$context): bool |
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244 | { |
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245 | if ( |
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246 | !($context[self::ENABLE_MAX_DEPTH] ?? false) || |
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247 | !isset($attributesMetadata[$attribute]) || |
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248 | null === $maxDepth = $attributesMetadata[$attribute]->getMaxDepth() |
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249 | ) { |
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250 | return false; |
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251 | } |
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252 | |||
253 | $key = sprintf(self::DEPTH_KEY_PATTERN, $class, $attribute); |
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254 | if (!isset($context[$key])) { |
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255 | $context[$key] = 1; |
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256 | |||
257 | return false; |
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258 | } |
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259 | |||
260 | if ($context[$key] === $maxDepth) { |
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261 | return true; |
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262 | } |
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263 | |||
264 | ++$context[$key]; |
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265 | |||
266 | return false; |
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267 | } |
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268 | } |
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269 |
This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue.
If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. Please note the @ignore annotation hint above.