digiaonline /
graphql-php
| Total Complexity | 44 |
| Total Lines | 379 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like Schema often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Schema, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 57 | class Schema implements SchemaInterface, ConfigAwareInterface |
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| 58 | { |
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| 59 | use ConfigAwareTrait; |
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| 60 | use NodeTrait; |
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| 61 | |||
| 62 | /** |
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| 63 | * @var TypeInterface|null |
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| 64 | */ |
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| 65 | protected $query; |
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| 66 | |||
| 67 | /** |
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| 68 | * @var TypeInterface|null |
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| 69 | */ |
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| 70 | protected $mutation; |
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| 71 | |||
| 72 | /** |
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| 73 | * @var TypeInterface|null |
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| 74 | */ |
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| 75 | protected $subscription; |
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| 76 | |||
| 77 | /** |
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| 78 | * @var TypeInterface |
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| 79 | */ |
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| 80 | protected $types = []; |
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| 81 | |||
| 82 | /** |
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| 83 | * @var array |
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| 84 | */ |
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| 85 | protected $directives = []; |
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| 86 | |||
| 87 | /** |
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| 88 | * @var bool |
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| 89 | */ |
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| 90 | protected $assumeValid = false; |
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| 91 | |||
| 92 | /** |
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| 93 | * @var array |
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| 94 | */ |
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| 95 | protected $typeMap = []; |
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| 96 | |||
| 97 | /** |
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| 98 | * @var array |
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| 99 | */ |
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| 100 | protected $implementations = []; |
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| 101 | |||
| 102 | /** |
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| 103 | * @var array |
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| 104 | */ |
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| 105 | protected $possibleTypesMap = []; |
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| 106 | |||
| 107 | /** |
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| 108 | * @inheritdoc |
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| 109 | */ |
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| 110 | public function getQueryType(): ?TypeInterface |
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| 111 | { |
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| 112 | return $this->query; |
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| 113 | } |
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| 114 | |||
| 115 | /** |
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| 116 | * @inheritdoc |
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| 117 | */ |
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| 118 | public function getMutationType(): ?TypeInterface |
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| 119 | { |
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| 120 | return $this->mutation; |
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| 121 | } |
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| 122 | |||
| 123 | /** |
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| 124 | * @inheritdoc |
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| 125 | */ |
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| 126 | public function getSubscriptionType(): ?TypeInterface |
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| 127 | { |
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| 128 | return $this->subscription; |
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| 129 | } |
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| 130 | |||
| 131 | /** |
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| 132 | * @inheritdoc |
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| 133 | */ |
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| 134 | public function getDirective(string $name): ?Directive |
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| 135 | { |
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| 136 | return find($this->directives, function (Directive $directive) use ($name) { |
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| 137 | return $directive->getName() === $name; |
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| 138 | }); |
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| 139 | } |
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| 140 | |||
| 141 | /** |
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| 142 | * @inheritdoc |
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| 143 | */ |
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| 144 | public function getDirectives(): array |
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| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * @inheritdoc |
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| 151 | */ |
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| 152 | public function getTypeMap(): array |
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| 153 | { |
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| 154 | return $this->typeMap; |
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| 155 | } |
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| 156 | |||
| 157 | /** |
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| 158 | * @inheritdoc |
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| 159 | */ |
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| 160 | public function getAssumeValid(): bool |
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| 161 | { |
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| 162 | return $this->assumeValid; |
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| 163 | } |
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| 164 | |||
| 165 | /** |
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| 166 | * @inheritdoc |
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| 167 | */ |
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| 168 | public function isPossibleType(AbstractTypeInterface $abstractType, TypeInterface $possibleType): bool |
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| 169 | { |
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| 170 | /** @noinspection PhpUndefinedMethodInspection */ |
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| 171 | $abstractTypeName = $abstractType->getName(); |
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|
Bug
introduced
by
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| 172 | /** @noinspection PhpUndefinedMethodInspection */ |
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| 173 | $possibleTypeName = $possibleType->getName(); |
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| 174 | |||
| 175 | if (!isset($this->possibleTypesMap[$abstractTypeName])) { |
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| 176 | $possibleTypes = $this->getPossibleTypes($abstractType); |
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| 177 | |||
| 178 | invariant( |
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| 179 | \is_array($possibleTypes), |
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| 180 | \sprintf( |
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| 181 | 'Could not find possible implementing types for %s ' . |
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| 182 | 'in schema. Check that schema.types is defined and is an array of ' . |
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| 183 | 'all possible types in the schema.', |
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| 184 | $abstractTypeName |
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| 185 | ) |
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| 186 | ); |
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| 187 | |||
| 188 | $this->possibleTypesMap[$abstractTypeName] = \array_reduce($possibleTypes, |
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| 189 | function (array $map, TypeInterface $type) { |
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| 190 | /** @var NameAwareInterface $type */ |
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| 191 | $map[$type->getName()] = true; |
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| 192 | return $map; |
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| 193 | }, []); |
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| 194 | } |
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| 195 | |||
| 196 | return isset($this->possibleTypesMap[$abstractTypeName][$possibleTypeName]); |
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| 197 | } |
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| 198 | |||
| 199 | /** |
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| 200 | * @inheritdoc |
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| 201 | */ |
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| 202 | public function getPossibleTypes(AbstractTypeInterface $abstractType): ?array |
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| 203 | { |
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| 204 | if ($abstractType instanceof UnionType) { |
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| 205 | return $abstractType->getTypes(); |
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| 206 | } |
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| 207 | |||
| 208 | return $this->implementations[$abstractType->getName()] ?? null; |
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| 209 | } |
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| 210 | |||
| 211 | /** |
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| 212 | * @inheritdoc |
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| 213 | */ |
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| 214 | public function getType(string $name): ?TypeInterface |
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| 215 | { |
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| 216 | return $this->typeMap[$name] ?? null; |
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| 217 | } |
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| 218 | |||
| 219 | /** |
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| 220 | * @inheritdoc |
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| 221 | */ |
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| 222 | protected function beforeConfig(): void |
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| 223 | { |
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| 224 | $this->setDirectives(specifiedDirectives()); |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * @throws InvariantException |
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| 229 | */ |
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| 230 | protected function afterConfig(): void |
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| 231 | { |
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| 232 | $this->buildTypeMap(); |
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| 233 | $this->buildImplementations(); |
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| 234 | } |
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| 235 | |||
| 236 | /** |
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| 237 | * |
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| 238 | */ |
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| 239 | protected function buildTypeMap(): void |
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| 240 | { |
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| 241 | $initialTypes = [ |
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| 242 | $this->query, |
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| 243 | $this->mutation, |
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| 244 | $this->subscription, |
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| 245 | __Schema(), // Introspection |
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| 246 | ]; |
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| 247 | |||
| 248 | if ($this->types) { |
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| 249 | $initialTypes = \array_merge($initialTypes, $this->types); |
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| 250 | } |
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| 251 | |||
| 252 | // Keep track of all types referenced within the schema. |
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| 253 | $typeMap = []; |
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| 254 | |||
| 255 | // First by deeply visiting all initial types. |
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| 256 | $typeMap = \array_reduce($initialTypes, [$this, 'typeMapReducer'], $typeMap); |
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| 257 | |||
| 258 | // Then by deeply visiting all directive types. |
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| 259 | $typeMap = \array_reduce($this->directives, [$this, 'typeMapDirectiveReducer'], $typeMap); |
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| 260 | |||
| 261 | // Storing the resulting map for reference by the schema. |
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| 262 | $this->typeMap = $typeMap; |
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| 263 | } |
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| 264 | |||
| 265 | /** |
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| 266 | * @throws InvariantException |
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| 267 | */ |
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| 268 | protected function buildImplementations() |
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| 269 | { |
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| 270 | $implementations = []; |
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| 271 | |||
| 272 | // Keep track of all implementations by interface name. |
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| 273 | foreach ($this->typeMap as $typeName => $type) { |
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| 274 | if ($type instanceof ObjectType) { |
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| 275 | foreach ($type->getInterfaces() as $interface) { |
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| 276 | if (!($interface instanceof InterfaceType)) { |
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| 277 | continue; |
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| 278 | } |
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| 279 | |||
| 280 | $interfaceName = $interface->getName(); |
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| 281 | |||
| 282 | if (!isset($implementations[$interfaceName])) { |
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| 283 | $implementations[$interfaceName] = []; |
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| 284 | } |
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| 285 | |||
| 286 | $implementations[$interfaceName][] = $type; |
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| 287 | } |
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| 288 | } |
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| 289 | } |
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| 290 | |||
| 291 | $this->implementations = $implementations; |
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| 292 | } |
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| 293 | |||
| 294 | /** |
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| 295 | * @param TypeInterface|null $query |
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| 296 | * @return Schema |
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| 297 | */ |
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| 298 | protected function setQuery(?TypeInterface $query): Schema |
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| 299 | { |
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| 300 | $this->query = $query; |
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| 301 | return $this; |
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| 302 | } |
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| 303 | |||
| 304 | /** |
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| 305 | * @param TypeInterface|null $mutation |
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| 306 | * @return Schema |
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| 307 | */ |
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| 308 | protected function setMutation(?TypeInterface $mutation): Schema |
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| 309 | { |
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| 310 | $this->mutation = $mutation; |
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| 311 | return $this; |
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| 312 | } |
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| 313 | |||
| 314 | /** |
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| 315 | * @param TypeInterface|null $subscription |
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| 316 | * @return Schema |
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| 317 | */ |
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| 318 | protected function setSubscription(?TypeInterface $subscription): Schema |
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| 319 | { |
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| 320 | $this->subscription = $subscription; |
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| 321 | return $this; |
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| 322 | } |
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| 323 | |||
| 324 | /** |
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| 325 | * @param array $types |
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| 326 | * @return Schema |
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| 327 | */ |
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| 328 | protected function setTypes(array $types): Schema |
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| 329 | { |
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| 330 | $this->types = $types; |
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| 331 | return $this; |
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| 332 | } |
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| 333 | |||
| 334 | /** |
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| 335 | * @param DirectiveInterface[] $directives |
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| 336 | * @return Schema |
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| 337 | */ |
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| 338 | protected function setDirectives(array $directives): Schema |
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| 339 | { |
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| 340 | $this->directives = $directives; |
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| 341 | return $this; |
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| 342 | } |
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| 343 | |||
| 344 | /** |
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| 345 | * @param bool $assumeValid |
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| 346 | * @return Schema |
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| 347 | */ |
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| 348 | protected function setAssumeValid(bool $assumeValid): Schema |
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| 349 | { |
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| 350 | $this->assumeValid = $assumeValid; |
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| 351 | return $this; |
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| 352 | } |
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| 353 | |||
| 354 | /** |
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| 355 | * @param array $map |
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| 356 | * @param TypeInterface|NameAwareInterface|null $type |
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| 357 | * @return array |
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| 358 | * @throws InvariantException |
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| 359 | */ |
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| 360 | protected function typeMapReducer(array $map, ?TypeInterface $type): array |
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| 417 | } |
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| 418 | |||
| 419 | /** |
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| 420 | * Note: We do not type-hint the `$directive`, because we want the `SchemaValidator` to catch these errors. |
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| 421 | * |
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| 422 | * @param array $map |
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| 423 | * @param mixed|null $directive |
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| 424 | * @return array |
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| 425 | */ |
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| 426 | protected function typeMapDirectiveReducer(array $map, $directive): array |
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| 427 | { |
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| 428 | if (!($directive instanceof Directive) || |
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| 429 | ($directive instanceof Directive && !$directive->hasArguments())) { |
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| 430 | return $map; |
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| 431 | } |
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| 432 | |||
| 433 | return \array_reduce($directive->getArguments(), function ($map, Argument $argument) { |
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| 436 | } |
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| 437 | |||
| 438 | } |
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| 439 |
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