digiaonline /
graphql-php
| Total Complexity | 106 |
| Total Lines | 933 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like ExecutionStrategy 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 ExecutionStrategy, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 40 | abstract class ExecutionStrategy |
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| 41 | { |
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| 42 | /** |
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| 43 | * @var ExecutionContext |
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| 44 | */ |
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| 45 | protected $context; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var OperationDefinitionNode |
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| 49 | */ |
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| 50 | protected $operation; |
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| 51 | |||
| 52 | /** |
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| 53 | * @var mixed |
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| 54 | */ |
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| 55 | protected $rootValue; |
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| 56 | |||
| 57 | |||
| 58 | /** |
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| 59 | * @var ValuesResolver |
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| 60 | */ |
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| 61 | protected $valuesResolver; |
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| 62 | |||
| 63 | /** |
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| 64 | * @var array |
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| 65 | */ |
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| 66 | protected $finalResult; |
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| 67 | |||
| 68 | /** |
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| 69 | * @var array |
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| 70 | */ |
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| 71 | protected static $defaultFieldResolver = [__CLASS__, 'defaultFieldResolver']; |
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| 72 | |||
| 73 | /** |
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| 74 | * AbstractStrategy constructor. |
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| 75 | * @param ExecutionContext $context |
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| 76 | * |
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| 77 | * @param OperationDefinitionNode $operation |
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| 78 | */ |
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| 79 | public function __construct( |
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| 80 | ExecutionContext $context, |
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| 81 | OperationDefinitionNode $operation, |
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| 82 | $rootValue |
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| 83 | ) { |
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| 84 | $this->context = $context; |
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| 85 | $this->operation = $operation; |
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| 86 | $this->rootValue = $rootValue; |
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| 87 | // TODO: Inject the ValuesResolver instance by using a builder for this class. |
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| 88 | $this->valuesResolver = new ValuesResolver(new ValueNodeCoercer()); |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * @return array|null |
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| 93 | */ |
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| 94 | abstract function execute(): ?array; |
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| 95 | |||
| 96 | /** |
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| 97 | * @param ObjectType $runtimeType |
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| 98 | * @param SelectionSetNode $selectionSet |
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| 99 | * @param $fields |
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| 100 | * @param $visitedFragmentNames |
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| 101 | * @return mixed |
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| 102 | * @throws InvalidTypeException |
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| 103 | * @throws \Digia\GraphQL\Error\ExecutionException |
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| 104 | * @throws \Digia\GraphQL\Error\InvariantException |
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| 105 | */ |
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| 106 | protected function collectFields( |
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| 107 | ObjectType $runtimeType, |
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| 108 | SelectionSetNode $selectionSet, |
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| 109 | &$fields, |
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| 110 | &$visitedFragmentNames |
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| 111 | ) { |
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| 112 | foreach ($selectionSet->getSelections() as $selection) { |
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| 113 | // Check if this Node should be included first |
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| 114 | if (!$this->shouldIncludeNode($selection)) { |
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| 115 | continue; |
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| 116 | } |
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| 117 | // Collect fields |
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| 118 | if ($selection instanceof FieldNode) { |
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| 119 | $fieldName = $this->getFieldNameKey($selection); |
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| 120 | |||
| 121 | if (!isset($fields[$fieldName])) { |
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| 122 | $fields[$fieldName] = []; |
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| 123 | } |
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| 124 | |||
| 125 | $fields[$fieldName][] = $selection; |
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| 126 | } elseif ($selection instanceof InlineFragmentNode) { |
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| 127 | if (!$this->doesFragmentConditionMatch($selection, $runtimeType)) { |
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| 128 | continue; |
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| 129 | } |
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| 130 | |||
| 131 | $this->collectFields($runtimeType, $selection->getSelectionSet(), $fields, $visitedFragmentNames); |
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| 132 | } elseif ($selection instanceof FragmentSpreadNode) { |
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| 133 | $fragmentName = $selection->getNameValue(); |
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| 134 | |||
| 135 | if (!empty($visitedFragmentNames[$fragmentName])) { |
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| 136 | continue; |
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| 137 | } |
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| 138 | |||
| 139 | $visitedFragmentNames[$fragmentName] = true; |
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| 140 | /** @var FragmentDefinitionNode $fragment */ |
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| 141 | $fragment = $this->context->getFragments()[$fragmentName]; |
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| 142 | $this->collectFields($runtimeType, $fragment->getSelectionSet(), $fields, $visitedFragmentNames); |
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| 143 | } |
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| 144 | } |
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| 145 | |||
| 146 | return $fields; |
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| 147 | } |
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| 148 | |||
| 149 | |||
| 150 | /** |
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| 151 | * @param $node |
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| 152 | * @return bool |
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| 153 | * @throws InvalidTypeException |
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| 154 | * @throws \Digia\GraphQL\Error\ExecutionException |
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| 155 | * @throws \Digia\GraphQL\Error\InvariantException |
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| 156 | */ |
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| 157 | private function shouldIncludeNode(NodeInterface $node): bool |
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| 158 | { |
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| 159 | |||
| 160 | $contextVariables = $this->context->getVariableValues(); |
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| 161 | |||
| 162 | $skip = $this->valuesResolver->getDirectiveValues(GraphQLSkipDirective(), $node, $contextVariables); |
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| 163 | |||
| 164 | if ($skip && $skip['if'] === true) { |
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| 165 | return false; |
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| 166 | } |
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| 167 | |||
| 168 | $include = $this->valuesResolver->getDirectiveValues(GraphQLIncludeDirective(), $node, $contextVariables); |
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| 169 | |||
| 170 | if ($include && $include['if'] === false) { |
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| 171 | return false; |
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| 172 | } |
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| 173 | |||
| 174 | return true; |
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| 175 | } |
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| 176 | |||
| 177 | /** |
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| 178 | * @param FragmentDefinitionNode|InlineFragmentNode $fragment |
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| 179 | * @param ObjectType $type |
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| 180 | * @return bool |
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| 181 | * @throws InvalidTypeException |
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| 182 | */ |
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| 183 | private function doesFragmentConditionMatch( |
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| 184 | NodeInterface $fragment, |
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| 185 | ObjectType $type |
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| 186 | ): bool { |
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| 187 | $typeConditionNode = $fragment->getTypeCondition(); |
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| 188 | |||
| 189 | if (!$typeConditionNode) { |
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| 190 | return true; |
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| 191 | } |
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| 192 | |||
| 193 | $conditionalType = typeFromAST($this->context->getSchema(), $typeConditionNode); |
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| 194 | |||
| 195 | if ($conditionalType === $type) { |
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| 196 | return true; |
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| 197 | } |
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| 198 | |||
| 199 | if ($conditionalType instanceof AbstractTypeInterface) { |
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| 200 | return $this->context->getSchema()->isPossibleType($conditionalType, $type); |
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| 201 | } |
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| 202 | |||
| 203 | return false; |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * @TODO: consider to move this to FieldNode |
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| 208 | * @param FieldNode $node |
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| 209 | * @return string |
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| 210 | */ |
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| 211 | private function getFieldNameKey(FieldNode $node): string |
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| 212 | { |
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| 213 | return $node->getAlias() ? $node->getAlias()->getValue() : $node->getNameValue(); |
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| 214 | } |
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| 215 | |||
| 216 | /** |
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| 217 | * Implements the "Evaluating selection sets" section of the spec for "read" mode. |
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| 218 | * @param ObjectType $objectType |
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| 219 | * @param $rootValue |
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| 220 | * @param $path |
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| 221 | * @param $fields |
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| 222 | * @return array |
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| 223 | * @throws InvalidTypeException |
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| 224 | * @throws \Digia\GraphQL\Error\ExecutionException |
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| 225 | * @throws \Digia\GraphQL\Error\InvariantException |
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| 226 | * @throws \Throwable |
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| 227 | */ |
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| 228 | protected function executeFields( |
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| 229 | ObjectType $objectType, |
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| 230 | $rootValue, |
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| 231 | $path, |
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| 232 | $fields |
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| 233 | ): array { |
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| 234 | $finalResults = []; |
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| 235 | $isContainsPromise = false; |
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| 236 | |||
| 237 | foreach ($fields as $fieldName => $fieldNodes) { |
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| 238 | $fieldPath = $path; |
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| 239 | $fieldPath[] = $fieldName; |
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| 240 | |||
| 241 | try { |
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| 242 | $result = $this->resolveField($objectType, $rootValue, $fieldNodes, $fieldPath); |
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| 243 | } catch (UndefinedException $ex) { |
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| 244 | continue; |
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| 245 | } |
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| 246 | |||
| 247 | $isContainsPromise = $isContainsPromise || $this->isPromise($result); |
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| 248 | |||
| 249 | $finalResults[$fieldName] = $result; |
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| 250 | } |
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| 251 | |||
| 252 | if ($isContainsPromise) { |
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| 253 | $keys = array_keys($finalResults); |
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| 254 | $promise = \React\Promise\all(array_values($finalResults)); |
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| 255 | $promise->then(function ($values) use ($keys, &$finalResults) { |
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| 256 | foreach ($values as $i => $value) { |
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| 257 | $finalResults[$keys[$i]] = $value; |
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| 258 | } |
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| 259 | }); |
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| 260 | } |
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| 261 | |||
| 262 | return $finalResults; |
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| 263 | } |
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| 264 | |||
| 265 | /** |
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| 266 | * Implements the "Evaluating selection sets" section of the spec for "write" mode. |
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| 267 | * |
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| 268 | * @param ObjectType $objectType |
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| 269 | * @param $rootValue |
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| 270 | * @param $path |
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| 271 | * @param $fields |
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| 272 | * @return array |
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| 273 | * @throws InvalidTypeException |
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| 274 | * @throws \Digia\GraphQL\Error\ExecutionException |
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| 275 | * @throws \Digia\GraphQL\Error\InvariantException |
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| 276 | * @throws \Throwable |
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| 277 | */ |
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| 278 | public function executeFieldsSerially( |
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| 279 | ObjectType $objectType, |
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| 280 | $rootValue, |
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| 281 | $path, |
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| 282 | $fields |
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| 283 | ) { |
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| 284 | //@TODO execute fields serially |
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| 285 | $finalResults = []; |
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| 286 | |||
| 287 | foreach ($fields as $fieldName => $fieldNodes) { |
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| 288 | $fieldPath = $path; |
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| 289 | $fieldPath[] = $fieldName; |
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| 290 | |||
| 291 | try { |
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| 292 | $result = $this->resolveField($objectType, $rootValue, $fieldNodes, $fieldPath); |
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| 293 | } catch (UndefinedException $ex) { |
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| 294 | continue; |
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| 295 | } |
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| 296 | |||
| 297 | $finalResults[$fieldName] = $result; |
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| 298 | } |
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| 299 | |||
| 300 | return $finalResults; |
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| 301 | } |
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| 302 | |||
| 303 | /** |
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| 304 | * @param Schema $schema |
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| 305 | * @param ObjectType $parentType |
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| 306 | * @param string $fieldName |
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| 307 | * @return \Digia\GraphQL\Type\Definition\Field|null |
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| 308 | * @throws InvalidTypeException |
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| 309 | */ |
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| 310 | public function getFieldDefinition( |
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| 311 | Schema $schema, |
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| 312 | ObjectType $parentType, |
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| 313 | string $fieldName |
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| 314 | ) { |
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| 315 | $schemaMetaFieldDefinition = SchemaMetaFieldDefinition(); |
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| 316 | $typeMetaFieldDefinition = TypeMetaFieldDefinition(); |
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| 317 | $typeNameMetaFieldDefinition = TypeNameMetaFieldDefinition(); |
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| 318 | |||
| 319 | if ($fieldName === $schemaMetaFieldDefinition->getName() && $schema->getQueryType() === $parentType) { |
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| 320 | return $schemaMetaFieldDefinition; |
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| 321 | } |
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| 322 | |||
| 323 | if ($fieldName === $typeMetaFieldDefinition->getName() && $schema->getQueryType() === $parentType) { |
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| 324 | return $typeMetaFieldDefinition; |
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| 325 | } |
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| 326 | |||
| 327 | if ($fieldName === $typeNameMetaFieldDefinition->getName()) { |
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| 328 | return $typeNameMetaFieldDefinition; |
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| 329 | } |
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| 330 | |||
| 331 | $fields = $parentType->getFields(); |
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| 332 | |||
| 333 | return $fields[$fieldName] ?? null; |
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| 334 | } |
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| 335 | |||
| 336 | |||
| 337 | /** |
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| 338 | * @param ObjectType $parentType |
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| 339 | * @param $rootValue |
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| 340 | * @param $fieldNodes |
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| 341 | * @param $path |
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| 342 | * @return array|null|\Throwable |
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| 343 | * @throws InvalidTypeException |
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| 344 | * @throws \Digia\GraphQL\Error\ExecutionException |
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| 345 | * @throws \Digia\GraphQL\Error\InvariantException |
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| 346 | * @throws \Throwable |
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| 347 | */ |
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| 348 | protected function resolveField( |
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| 349 | ObjectType $parentType, |
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| 350 | $rootValue, |
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| 351 | $fieldNodes, |
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| 352 | $path |
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| 353 | ) { |
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| 354 | /** @var FieldNode $fieldNode */ |
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| 355 | $fieldNode = $fieldNodes[0]; |
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| 356 | |||
| 357 | $field = $this->getFieldDefinition($this->context->getSchema(), $parentType, $fieldNode->getNameValue()); |
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| 358 | |||
| 359 | if (null === $field) { |
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| 360 | throw new UndefinedException('Undefined field definition.'); |
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| 361 | } |
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| 362 | |||
| 363 | $info = $this->buildResolveInfo($fieldNodes, $fieldNode, $field, $parentType, $path, $this->context); |
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| 364 | |||
| 365 | $resolveFunction = $this->determineResolveFunction($field, $parentType, $this->context); |
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| 366 | |||
| 367 | $result = $this->resolveFieldValueOrError( |
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| 368 | $field, |
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| 369 | $fieldNode, |
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| 370 | $resolveFunction, |
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| 371 | $rootValue, |
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| 372 | $this->context, |
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| 373 | $info |
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| 374 | ); |
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| 375 | |||
| 376 | $result = $this->completeValueCatchingError( |
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| 377 | $field->getType(), |
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| 378 | $fieldNodes, |
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| 379 | $info, |
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| 380 | $path, |
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| 381 | $result// $result is passed as $source |
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| 382 | ); |
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| 383 | |||
| 384 | return $result; |
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| 385 | } |
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| 386 | |||
| 387 | /** |
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| 388 | * @param array $fieldNodes |
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| 389 | * @param FieldNode $fieldNode |
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| 390 | * @param Field $field |
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| 391 | * @param ObjectType $parentType |
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| 392 | * @param $path |
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| 393 | * @param ExecutionContext $context |
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| 394 | * @return ResolveInfo |
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| 395 | */ |
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| 396 | private function buildResolveInfo( |
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| 397 | array $fieldNodes, |
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| 398 | FieldNode $fieldNode, |
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| 399 | Field $field, |
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| 400 | ObjectType $parentType, |
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| 401 | $path, |
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| 402 | ExecutionContext $context |
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| 403 | ) { |
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| 404 | return new ResolveInfo([ |
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| 405 | 'fieldName' => $fieldNode->getNameValue(), |
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| 406 | 'fieldNodes' => $fieldNodes, |
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| 407 | 'returnType' => $field->getType(), |
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| 408 | 'parentType' => $parentType, |
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| 409 | 'path' => $path, |
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| 410 | 'schema' => $context->getSchema(), |
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| 411 | 'fragments' => $context->getFragments(), |
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| 412 | 'rootValue' => $context->getRootValue(), |
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| 413 | 'operation' => $context->getOperation(), |
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| 414 | 'variableValues' => $context->getVariableValues(), |
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| 415 | ]); |
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| 416 | } |
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| 417 | |||
| 418 | /** |
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| 419 | * @param Field $field |
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| 420 | * @param ObjectType $objectType |
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| 421 | * @param ExecutionContext $context |
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| 422 | * @return callable|mixed|null |
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| 423 | */ |
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| 424 | private function determineResolveFunction( |
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| 425 | Field $field, |
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| 426 | ObjectType $objectType, |
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| 427 | ExecutionContext $context |
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| 428 | ) { |
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| 429 | |||
| 430 | if ($field->hasResolve()) { |
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| 431 | return $field->getResolve(); |
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| 432 | } |
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| 433 | |||
| 434 | if ($objectType->hasResolve()) { |
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| 435 | return $objectType->getResolve(); |
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| 436 | } |
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| 437 | |||
| 438 | return $this->context->getFieldResolver() ?? self::$defaultFieldResolver; |
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| 439 | } |
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| 440 | |||
| 441 | /** |
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| 442 | * @param TypeInterface $fieldType |
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| 443 | * @param $fieldNodes |
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| 444 | * @param ResolveInfo $info |
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| 445 | * @param $path |
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| 446 | * @param $result |
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| 447 | * @return null |
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| 448 | * @throws \Throwable |
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| 449 | */ |
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| 450 | public function completeValueCatchingError( |
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| 451 | TypeInterface $fieldType, |
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| 452 | $fieldNodes, |
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| 453 | ResolveInfo $info, |
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| 454 | $path, |
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| 455 | &$result |
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| 456 | ) { |
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| 457 | if ($fieldType instanceof NonNullType) { |
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| 458 | return $this->completeValueWithLocatedError( |
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| 459 | $fieldType, |
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| 460 | $fieldNodes, |
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| 461 | $info, |
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| 462 | $path, |
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| 463 | $result |
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| 464 | ); |
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| 465 | } |
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| 466 | |||
| 467 | try { |
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| 468 | $completed = $this->completeValueWithLocatedError( |
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| 469 | $fieldType, |
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| 470 | $fieldNodes, |
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| 471 | $info, |
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| 472 | $path, |
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| 473 | $result |
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| 474 | ); |
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| 475 | |||
| 476 | if ($this->isPromise($completed)) { |
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| 477 | $context = $this->context; |
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| 478 | /** @var ExtendedPromiseInterface $completed */ |
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| 479 | return $completed->then(null, function ($error) use ($context) { |
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| 480 | $context->addError($error); |
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| 481 | return new \React\Promise\FulfilledPromise(null); |
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| 482 | }); |
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| 483 | } |
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| 484 | |||
| 485 | return $completed; |
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| 486 | } catch (ExecutionException $ex) { |
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| 487 | $this->context->addError($ex); |
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| 488 | return null; |
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| 489 | } catch (\Exception $ex) { |
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| 490 | $this->context->addError(new ExecutionException($ex->getMessage())); |
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| 491 | return null; |
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| 492 | } |
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| 493 | } |
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| 494 | |||
| 495 | /** |
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| 496 | * @param TypeInterface $fieldType |
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| 497 | * @param $fieldNodes |
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| 498 | * @param ResolveInfo $info |
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| 499 | * @param $path |
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| 500 | * @param $result |
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| 501 | * @throws \Throwable |
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| 502 | */ |
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| 503 | public function completeValueWithLocatedError( |
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| 504 | TypeInterface $fieldType, |
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| 505 | $fieldNodes, |
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| 506 | ResolveInfo $info, |
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| 507 | $path, |
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| 508 | $result |
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| 509 | ) { |
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| 510 | try { |
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| 511 | $completed = $this->completeValue( |
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| 512 | $fieldType, |
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| 513 | $fieldNodes, |
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| 514 | $info, |
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| 515 | $path, |
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| 516 | $result |
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| 517 | ); |
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| 518 | |||
| 519 | return $completed; |
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| 520 | } catch (\Exception $ex) { |
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| 521 | throw $this->buildLocatedError($ex, $fieldNodes, $path); |
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| 522 | } catch (\Throwable $ex) { |
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| 523 | //@TODO throw located error |
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| 524 | throw $ex; |
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| 525 | } |
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| 526 | } |
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| 527 | |||
| 528 | /** |
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| 529 | * @param TypeInterface $returnType |
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| 530 | * @param $fieldNodes |
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| 531 | * @param ResolveInfo $info |
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| 532 | * @param $path |
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| 533 | * @param $result |
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| 534 | * @return array|mixed |
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| 535 | * @throws ExecutionException |
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| 536 | * @throws \Throwable |
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| 537 | */ |
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| 538 | private function completeValue( |
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| 539 | TypeInterface $returnType, |
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| 540 | $fieldNodes, |
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| 541 | ResolveInfo $info, |
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| 542 | $path, |
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| 543 | &$result |
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| 544 | ) { |
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| 545 | if ($this->isPromise($result)) { |
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| 546 | /** @var ExtendedPromiseInterface $result */ |
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| 547 | return $result->then(function (&$value) use ($returnType, $fieldNodes, $info, $path) { |
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| 548 | return $this->completeValue($returnType, $fieldNodes, $info, $path, $value); |
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| 549 | }); |
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| 550 | } |
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| 551 | |||
| 552 | if ($result instanceof \Throwable) { |
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| 553 | throw $result; |
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| 554 | } |
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| 555 | |||
| 556 | // If result is null-like, return null. |
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| 557 | if (null === $result) { |
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| 558 | return null; |
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| 559 | } |
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| 560 | |||
| 561 | if ($returnType instanceof NonNullType) { |
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| 562 | $completed = $this->completeValue( |
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| 563 | $returnType->getOfType(), |
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| 564 | $fieldNodes, |
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| 565 | $info, |
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| 566 | $path, |
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| 567 | $result |
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| 568 | ); |
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| 569 | |||
| 570 | if ($completed === null) { |
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| 571 | throw new ExecutionException( |
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| 572 | sprintf( |
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| 573 | 'Cannot return null for non-nullable field %s.%s.', |
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| 574 | $info->getParentType(), $info->getFieldName() |
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| 575 | ) |
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| 576 | ); |
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| 577 | } |
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| 578 | |||
| 579 | return $completed; |
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| 580 | } |
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| 581 | |||
| 582 | // If field type is List, complete each item in the list with the inner type |
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| 583 | if ($returnType instanceof ListType) { |
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| 584 | return $this->completeListValue($returnType, $fieldNodes, $info, $path, $result); |
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| 585 | } |
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| 586 | |||
| 587 | |||
| 588 | // If field type is Scalar or Enum, serialize to a valid value, returning |
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| 589 | // null if serialization is not possible. |
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| 590 | if ($returnType instanceof LeafTypeInterface) { |
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| 591 | return $this->completeLeafValue($returnType, $result); |
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| 592 | } |
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| 593 | |||
| 594 | //@TODO Make a function for checking abstract type? |
||
| 595 | if ($returnType instanceof InterfaceType || $returnType instanceof UnionType) { |
||
| 596 | return $this->completeAbstractValue($returnType, $fieldNodes, $info, $path, $result); |
||
| 597 | } |
||
| 598 | |||
| 599 | // Field type must be Object, Interface or Union and expect sub-selections. |
||
| 600 | if ($returnType instanceof ObjectType) { |
||
| 601 | return $this->completeObjectValue($returnType, $fieldNodes, $info, $path, $result); |
||
| 602 | } |
||
| 603 | |||
| 604 | throw new ExecutionException("Cannot complete value of unexpected type \"{$returnType}\"."); |
||
| 605 | } |
||
| 606 | |||
| 607 | /** |
||
| 608 | * @param AbstractTypeInterface $returnType |
||
| 609 | * @param $fieldNodes |
||
| 610 | * @param ResolveInfo $info |
||
| 611 | * @param $path |
||
| 612 | * @param $result |
||
| 613 | * @return array|PromiseInterface |
||
| 614 | * @throws ExecutionException |
||
| 615 | * @throws InvalidTypeException |
||
| 616 | * @throws \Digia\GraphQL\Error\InvariantException |
||
| 617 | * @throws \Throwable |
||
| 618 | */ |
||
| 619 | private function completeAbstractValue( |
||
| 620 | AbstractTypeInterface $returnType, |
||
| 621 | $fieldNodes, |
||
| 622 | ResolveInfo $info, |
||
| 623 | $path, |
||
| 624 | &$result |
||
| 625 | ) { |
||
| 626 | $runtimeType = $returnType->resolveType($result, $this->context->getContextValue(), $info); |
||
| 627 | |||
| 628 | if (null === $runtimeType) { |
||
| 629 | //@TODO Show warning |
||
| 630 | $runtimeType = $this->defaultTypeResolver($result, $this->context->getContextValue(), $info, $returnType); |
||
| 631 | } |
||
| 632 | |||
| 633 | if ($this->isPromise($runtimeType)) { |
||
| 634 | /** @var ExtendedPromiseInterface $runtimeType */ |
||
| 635 | return $runtimeType->then(function ($resolvedRuntimeType) use ( |
||
| 636 | $returnType, |
||
| 637 | $fieldNodes, |
||
| 638 | $info, |
||
| 639 | $path, |
||
| 640 | &$result |
||
| 641 | ) { |
||
| 642 | return $this->completeObjectValue( |
||
| 643 | $this->ensureValidRuntimeType( |
||
| 644 | $resolvedRuntimeType, |
||
| 645 | $returnType, |
||
| 646 | $fieldNodes, |
||
| 647 | $info, |
||
| 648 | $result |
||
| 649 | ), |
||
| 650 | $fieldNodes, |
||
| 651 | $info, |
||
| 652 | $path, |
||
| 653 | $result |
||
| 654 | ); |
||
| 655 | }); |
||
| 656 | } |
||
| 657 | |||
| 658 | return $this->completeObjectValue( |
||
| 659 | $this->ensureValidRuntimeType( |
||
| 660 | $runtimeType, |
||
| 661 | $returnType, |
||
| 662 | $fieldNodes, |
||
| 663 | $info, |
||
| 664 | $result |
||
| 665 | ), |
||
| 666 | $fieldNodes, |
||
| 667 | $info, |
||
| 668 | $path, |
||
| 669 | $result |
||
| 670 | ); |
||
| 671 | } |
||
| 672 | |||
| 673 | /** |
||
| 674 | * @param $runtimeTypeOrName |
||
| 675 | * @param AbstractTypeInterface $returnType |
||
| 676 | * @param $fieldNodes |
||
| 677 | * @param ResolveInfo $info |
||
| 678 | * @param $result |
||
| 679 | * @return TypeInterface|ObjectType|null |
||
| 680 | * @throws ExecutionException |
||
| 681 | */ |
||
| 682 | private function ensureValidRuntimeType( |
||
| 683 | $runtimeTypeOrName, |
||
| 684 | AbstractTypeInterface $returnType, |
||
| 685 | $fieldNodes, |
||
| 686 | ResolveInfo $info, |
||
| 687 | &$result |
||
| 688 | ) { |
||
| 689 | $runtimeType = is_string($runtimeTypeOrName) |
||
| 690 | ? $this->context->getSchema()->getType($runtimeTypeOrName) |
||
| 691 | : $runtimeTypeOrName; |
||
| 692 | |||
| 693 | $runtimeTypeName = is_string($runtimeType) ?: $runtimeType->getName(); |
||
| 694 | $returnTypeName = $returnType->getName(); |
||
| 695 | |||
| 696 | if (!$runtimeType instanceof ObjectType) { |
||
| 697 | $parentTypeName = $info->getParentType()->getName(); |
||
| 698 | $fieldName = $info->getFieldName(); |
||
| 699 | |||
| 700 | throw new ExecutionException( |
||
| 701 | "Abstract type {$returnTypeName} must resolve to an Object type at runtime " . |
||
| 702 | "for field {$parentTypeName}.{$fieldName} with " . |
||
| 703 | 'value "' . $result . '", received "{$runtimeTypeName}".' |
||
| 704 | ); |
||
| 705 | } |
||
| 706 | |||
| 707 | if (!$this->context->getSchema()->isPossibleType($returnType, $runtimeType)) { |
||
| 708 | throw new ExecutionException( |
||
| 709 | "Runtime Object type \"{$runtimeTypeName}\" is not a possible type for \"{$returnTypeName}\"." |
||
| 710 | ); |
||
| 711 | } |
||
| 712 | |||
| 713 | if ($runtimeType !== $this->context->getSchema()->getType($runtimeType->getName())) { |
||
| 714 | throw new ExecutionException( |
||
| 715 | "Schema must contain unique named types but contains multiple types named \"{$runtimeTypeName}\". " . |
||
| 716 | "Make sure that `resolveType` function of abstract type \"{$returnTypeName}\" returns the same " . |
||
| 717 | "type instance as referenced anywhere else within the schema." |
||
| 718 | ); |
||
| 719 | } |
||
| 720 | |||
| 721 | return $runtimeType; |
||
| 722 | } |
||
| 723 | |||
| 724 | /** |
||
| 725 | * @param $value |
||
| 726 | * @param $context |
||
| 727 | * @param ResolveInfo $info |
||
| 728 | * @param AbstractTypeInterface $abstractType |
||
| 729 | * @return TypeInterface|null |
||
| 730 | * @throws ExecutionException |
||
| 731 | */ |
||
| 732 | private function defaultTypeResolver($value, $context, ResolveInfo $info, AbstractTypeInterface $abstractType) |
||
| 733 | { |
||
| 734 | $possibleTypes = $info->getSchema()->getPossibleTypes($abstractType); |
||
| 735 | $promisedIsTypeOfResults = []; |
||
| 736 | |||
| 737 | foreach ($possibleTypes as $index => $type) { |
||
| 738 | $isTypeOfResult = $type->isTypeOf($value, $context, $info); |
||
| 739 | if (null !== $isTypeOfResult) { |
||
| 740 | if ($this->isPromise($isTypeOfResult)) { |
||
| 741 | $promisedIsTypeOfResults[$index] = $isTypeOfResult; |
||
| 742 | continue; |
||
| 743 | } |
||
| 744 | |||
| 745 | if ($isTypeOfResult === true) { |
||
| 746 | return $type; |
||
| 747 | } |
||
| 748 | |||
| 749 | if (\is_array($value)) { |
||
| 750 | //@TODO Make `type` configurable |
||
| 751 | if (isset($value['type']) && $value['type'] === $type->getName()) { |
||
| 752 | return $type; |
||
| 753 | } |
||
| 754 | } |
||
| 755 | } |
||
| 756 | } |
||
| 757 | |||
| 758 | if (!empty($promisedIsTypeOfResults)) { |
||
| 759 | return \React\Promise\all($promisedIsTypeOfResults) |
||
| 760 | ->then(function ($isTypeOfResults) use ($possibleTypes) { |
||
| 761 | foreach ($isTypeOfResults as $index => $result) { |
||
| 762 | if ($result) { |
||
| 763 | return $possibleTypes[$index]; |
||
| 764 | } |
||
| 765 | } |
||
| 766 | return null; |
||
| 767 | }); |
||
| 768 | } |
||
| 769 | |||
| 770 | return null; |
||
| 771 | } |
||
| 772 | |||
| 773 | /** |
||
| 774 | * @param ListType $returnType |
||
| 775 | * @param $fieldNodes |
||
| 776 | * @param ResolveInfo $info |
||
| 777 | * @param $path |
||
| 778 | * @param $result |
||
| 779 | * @return array|\React\Promise\Promise |
||
| 780 | * @throws \Throwable |
||
| 781 | */ |
||
| 782 | private function completeListValue( |
||
| 783 | ListType $returnType, |
||
| 784 | $fieldNodes, |
||
| 785 | ResolveInfo $info, |
||
| 786 | $path, |
||
| 787 | &$result |
||
| 788 | ) { |
||
| 789 | $itemType = $returnType->getOfType(); |
||
| 790 | |||
| 791 | $completedItems = []; |
||
| 792 | $containsPromise = false; |
||
| 793 | foreach ($result as $key => $item) { |
||
| 794 | $fieldPath = $path; |
||
| 795 | $fieldPath[] = $key; |
||
| 796 | $completedItem = $this->completeValueCatchingError($itemType, $fieldNodes, $info, $fieldPath, $item); |
||
| 797 | $completedItems[] = $completedItem; |
||
| 798 | $containsPromise = $containsPromise || $this->isPromise($completedItem); |
||
| 799 | } |
||
| 800 | |||
| 801 | return $containsPromise ? \React\Promise\all($completedItems) : $completedItems; |
||
| 802 | } |
||
| 803 | |||
| 804 | /** |
||
| 805 | * @param LeafTypeInterface $returnType |
||
| 806 | * @param $result |
||
| 807 | * @return mixed |
||
| 808 | * @throws ExecutionException |
||
| 809 | */ |
||
| 810 | private function completeLeafValue(LeafTypeInterface $returnType, &$result) |
||
| 811 | { |
||
| 812 | $serializedResult = $returnType->serialize($result); |
||
| 813 | |||
| 814 | if ($serializedResult === null) { |
||
| 815 | throw new ExecutionException( |
||
| 816 | sprintf('Expected a value of type "%s" but received: %s', (string)$returnType, toString($result)) |
||
| 817 | ); |
||
| 818 | } |
||
| 819 | |||
| 820 | return $serializedResult; |
||
| 821 | } |
||
| 822 | |||
| 823 | /** |
||
| 824 | * @param ObjectType $returnType |
||
| 825 | * @param $fieldNodes |
||
| 826 | * @param ResolveInfo $info |
||
| 827 | * @param $path |
||
| 828 | * @param $result |
||
| 829 | * @return array |
||
| 830 | * @throws ExecutionException |
||
| 831 | * @throws InvalidTypeException |
||
| 832 | * @throws \Digia\GraphQL\Error\InvariantException |
||
| 833 | * @throws \Throwable |
||
| 834 | */ |
||
| 835 | private function completeObjectValue( |
||
| 836 | ObjectType $returnType, |
||
| 837 | $fieldNodes, |
||
| 838 | ResolveInfo $info, |
||
| 839 | $path, |
||
| 840 | &$result |
||
| 841 | ) { |
||
| 842 | return $this->collectAndExecuteSubFields( |
||
| 843 | $returnType, |
||
| 844 | $fieldNodes, |
||
| 845 | $info, |
||
| 846 | $path, |
||
| 847 | $result |
||
| 848 | ); |
||
| 849 | } |
||
| 850 | |||
| 851 | /** |
||
| 852 | * @param Field $field |
||
| 853 | * @param FieldNode $fieldNode |
||
| 854 | * @param callable $resolveFunction |
||
| 855 | * @param $rootValue |
||
| 856 | * @param ExecutionContext $context |
||
| 857 | * @param ResolveInfo $info |
||
| 858 | * @return array|\Throwable |
||
| 859 | */ |
||
| 860 | private function resolveFieldValueOrError( |
||
| 861 | Field $field, |
||
| 862 | FieldNode $fieldNode, |
||
| 863 | ?callable $resolveFunction, |
||
| 864 | $rootValue, |
||
| 865 | ExecutionContext $context, |
||
| 866 | ResolveInfo $info |
||
| 867 | ) { |
||
| 868 | try { |
||
| 869 | $args = $this->valuesResolver->coerceArgumentValues($field, $fieldNode, $context->getVariableValues()); |
||
| 870 | |||
| 871 | return $resolveFunction($rootValue, $args, $context->getContextValue(), $info); |
||
| 872 | } catch (\Throwable $error) { |
||
| 873 | return $error; |
||
| 874 | } |
||
| 875 | } |
||
| 876 | |||
| 877 | /** |
||
| 878 | * Try to resolve a field without any field resolver function. |
||
| 879 | * |
||
| 880 | * @param array|object $rootValue |
||
| 881 | * @param $args |
||
| 882 | * @param $context |
||
| 883 | * @param ResolveInfo $info |
||
| 884 | * @return mixed|null |
||
| 885 | */ |
||
| 886 | public static function defaultFieldResolver($rootValue, $args, $context, ResolveInfo $info) |
||
| 887 | { |
||
| 888 | $fieldName = $info->getFieldName(); |
||
| 889 | $property = null; |
||
| 890 | |||
| 891 | if (is_array($rootValue) && isset($rootValue[$fieldName])) { |
||
| 892 | $property = $rootValue[$fieldName]; |
||
| 893 | } |
||
| 894 | |||
| 895 | if (is_object($rootValue)) { |
||
| 896 | $getter = 'get' . ucfirst($fieldName); |
||
| 897 | if (method_exists($rootValue, $getter)) { |
||
| 898 | $property = $rootValue->{$getter}(); |
||
| 899 | } elseif (property_exists($rootValue, $fieldName)) { |
||
| 900 | $property = $rootValue->{$fieldName}; |
||
| 901 | } |
||
| 902 | } |
||
| 903 | |||
| 904 | |||
| 905 | return $property instanceof \Closure ? $property($rootValue, $args, $context, $info) : $property; |
||
| 906 | } |
||
| 907 | |||
| 908 | /** |
||
| 909 | * @param ObjectType $returnType |
||
| 910 | * @param $fieldNodes |
||
| 911 | * @param ResolveInfo $info |
||
| 912 | * @param $path |
||
| 913 | * @param $result |
||
| 914 | * @return array |
||
| 915 | * @throws InvalidTypeException |
||
| 916 | * @throws \Digia\GraphQL\Error\ExecutionException |
||
| 917 | * @throws \Digia\GraphQL\Error\InvariantException |
||
| 918 | * @throws \Throwable |
||
| 919 | */ |
||
| 920 | private function collectAndExecuteSubFields( |
||
| 947 | } |
||
| 948 | |||
| 949 | /** |
||
| 950 | * @param $value |
||
| 951 | * @return bool |
||
| 952 | */ |
||
| 953 | protected function isPromise($value): bool |
||
| 956 | } |
||
| 957 | |||
| 958 | /** |
||
| 959 | * @param \Exception $originalException |
||
| 960 | * @param array $nodes |
||
| 961 | * @param string|array $path |
||
| 962 | * @return GraphQLException |
||
| 963 | */ |
||
| 964 | protected function buildLocatedError(\Exception $originalException, array $nodes, $path): ExecutionException |
||
| 965 | { |
||
| 966 | return new ExecutionException( |
||
| 967 | $originalException->getMessage(), |
||
| 968 | $originalException instanceof GraphQLException ? $originalException->getNodes() : $nodes, |
||
| 969 | $originalException instanceof GraphQLException ? $originalException->getSource() : null, |
||
| 970 | $originalException instanceof GraphQLException ? $originalException->getPositions() : null, |
||
| 971 | $path, |
||
| 972 | $originalException |
||
| 973 | ); |
||
| 974 | } |
||
| 975 | } |
||
| 976 |
Loading history...
Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.