Complex classes like Request 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. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
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 Request, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 18 | class Request |
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| 19 | { |
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| 20 | |||
| 21 | /** @var Query[] */ |
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| 22 | private $queries = []; |
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| 23 | |||
| 24 | /** @var Fragment[] */ |
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| 25 | private $fragments = []; |
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| 26 | |||
| 27 | /** @var Mutation[] */ |
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| 28 | private $mutations = []; |
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| 29 | |||
| 30 | /** @var array */ |
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| 31 | private $variables = []; |
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| 32 | |||
| 33 | /** @var VariableReference[] */ |
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| 34 | private $variableReferences = []; |
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| 35 | |||
| 36 | /** @var array */ |
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| 37 | private $queryVariables = []; |
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| 38 | |||
| 39 | /** @var array */ |
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| 40 | private $fragmentReferences = []; |
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| 41 | |||
| 42 | 71 | public function __construct($data = [], $variables = []) |
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| 43 | { |
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| 44 | 71 | if (array_key_exists('queries', $data)) { |
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| 45 | 70 | $this->addQueries($data['queries']); |
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| 46 | 70 | } |
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| 47 | |||
| 48 | 71 | if (array_key_exists('mutations', $data)) { |
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| 49 | 70 | $this->addMutations($data['mutations']); |
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| 50 | 70 | } |
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| 51 | |||
| 52 | 71 | if (array_key_exists('fragments', $data)) { |
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| 53 | 70 | $this->addFragments($data['fragments']); |
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| 54 | 70 | } |
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| 55 | |||
| 56 | 71 | if (array_key_exists('fragmentReferences', $data)) { |
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| 57 | 69 | $this->addFragmentReferences($data['fragmentReferences']); |
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| 58 | 69 | } |
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| 59 | |||
| 60 | 71 | if (array_key_exists('variables', $data)) { |
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| 61 | 69 | $this->addQueryVariables($data['variables']); |
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| 62 | 69 | } |
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| 63 | |||
| 64 | 71 | if (array_key_exists('variableReferences', $data)) { |
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| 65 | 69 | foreach ($data['variableReferences'] as $ref) { |
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| 66 | 9 | if (!array_key_exists($ref->getName(), $variables)) { |
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| 67 | /** @var Variable $variable */ |
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| 68 | $variable = $ref->getVariable(); |
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| 69 | if ($variable->hasDefaultValue()) { |
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| 70 | $variables[$variable->getName()] = $variable->getDefaultValue()->getValue(); |
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| 71 | continue; |
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| 72 | } |
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| 73 | throw new InvalidRequestException(sprintf("Variable %s hasn't been submitted", $ref->getName()), $ref->getLocation()); |
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| 74 | } |
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| 75 | 69 | } |
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| 76 | |||
| 77 | 69 | $this->addVariableReferences($data['variableReferences']); |
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| 78 | 69 | } |
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| 79 | |||
| 80 | 71 | $this->setVariables($variables); |
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| 81 | 71 | } |
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| 82 | |||
| 83 | 70 | public function addQueries($queries) |
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| 84 | { |
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| 85 | 70 | foreach ($queries as $query) { |
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| 86 | 62 | $this->queries[] = $query; |
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| 87 | 70 | } |
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| 88 | 70 | } |
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| 89 | |||
| 90 | 70 | public function addMutations($mutations) |
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| 91 | { |
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| 92 | 70 | foreach ($mutations as $mutation) { |
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| 93 | 10 | $this->mutations[] = $mutation; |
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| 94 | 70 | } |
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| 95 | 70 | } |
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| 96 | |||
| 97 | 69 | public function addQueryVariables($queryVariables) |
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| 98 | { |
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| 99 | 69 | foreach ($queryVariables as $queryVariable) { |
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| 100 | 10 | $this->queryVariables[] = $queryVariable; |
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| 101 | 69 | } |
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| 102 | 69 | } |
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| 103 | |||
| 104 | 69 | public function addVariableReferences($variableReferences) |
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| 105 | { |
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| 106 | 69 | foreach ($variableReferences as $variableReference) { |
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| 107 | 9 | $this->variableReferences[] = $variableReference; |
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| 108 | 69 | } |
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| 109 | 69 | } |
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| 110 | |||
| 111 | 69 | public function addFragmentReferences($fragmentReferences) |
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| 112 | { |
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| 113 | 69 | foreach ($fragmentReferences as $fragmentReference) { |
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| 114 | 9 | $this->fragmentReferences[] = $fragmentReference; |
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| 115 | 69 | } |
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| 116 | 69 | } |
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| 117 | |||
| 118 | 70 | public function addFragments($fragments) |
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| 119 | { |
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| 120 | 70 | foreach ($fragments as $fragment) { |
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| 121 | 9 | $this->addFragment($fragment); |
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| 122 | 70 | } |
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| 123 | 70 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * @return Query[] |
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| 127 | */ |
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| 128 | 68 | public function getAllOperations() |
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| 132 | |||
| 133 | /** |
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| 134 | * @return Query[] |
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| 135 | */ |
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| 136 | 1 | public function getQueries() |
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| 140 | |||
| 141 | /** |
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| 142 | * @return Fragment[] |
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| 143 | */ |
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| 144 | 72 | public function getFragments() |
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| 148 | |||
| 149 | 9 | public function addFragment(Fragment $fragment) |
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| 153 | |||
| 154 | /** |
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| 155 | * @param $name |
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| 156 | * |
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| 157 | * @return null|Fragment |
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| 158 | */ |
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| 159 | 13 | public function getFragment($name) |
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| 160 | { |
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| 161 | 13 | foreach ($this->fragments as $fragment) { |
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| 162 | 11 | if ($fragment->getName() == $name) { |
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| 163 | 11 | return $fragment; |
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| 164 | } |
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| 165 | 10 | } |
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| 166 | |||
| 167 | 4 | return null; |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * @return Mutation[] |
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| 172 | */ |
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| 173 | 1 | public function getMutations() |
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| 177 | |||
| 178 | /** |
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| 179 | * @return bool |
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| 180 | */ |
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| 181 | 1 | public function hasQueries() |
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| 185 | |||
| 186 | /** |
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| 187 | * @return bool |
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| 188 | */ |
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| 189 | 1 | public function hasMutations() |
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| 193 | |||
| 194 | /** |
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| 195 | * @return bool |
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| 196 | */ |
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| 197 | 1 | public function hasFragments() |
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| 201 | |||
| 202 | /** |
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| 203 | * @return array |
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| 204 | */ |
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| 205 | 2 | public function getVariables() |
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| 209 | |||
| 210 | /** |
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| 211 | * @param array|string $variables |
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| 212 | * |
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| 213 | * @return $this |
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| 214 | */ |
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| 215 | 71 | public function setVariables($variables) |
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| 216 | { |
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| 217 | 71 | if (!is_array($variables)) { |
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| 218 | 1 | $variables = json_decode($variables, true); |
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| 219 | 1 | } |
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| 220 | |||
| 221 | 71 | $this->variables = $variables; |
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| 222 | 71 | foreach ($this->variableReferences as $reference) { |
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| 223 | /** invalid request with no variable */ |
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| 224 | 9 | if (!$reference->getVariable()) continue; |
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| 225 | 9 | $variableName = $reference->getVariable()->getName(); |
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| 226 | |||
| 227 | /** no variable was set at the time */ |
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| 228 | 9 | if (!array_key_exists($variableName, $variables)) continue; |
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| 229 | |||
| 230 | 9 | $reference->getVariable()->setValue($variables[$variableName]); |
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| 231 | 9 | $reference->setValue($variables[$variableName]); |
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| 232 | 71 | } |
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| 233 | |||
| 234 | 71 | return $this; |
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| 235 | } |
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| 236 | |||
| 237 | 9 | public function getVariable($name) |
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| 241 | |||
| 242 | 9 | public function hasVariable($name) |
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| 246 | |||
| 247 | /** |
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| 248 | * @return array|Variable[] |
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| 249 | */ |
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| 250 | 69 | public function getQueryVariables() |
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| 254 | |||
| 255 | /** |
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| 256 | * @param array $queryVariables |
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| 257 | */ |
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| 258 | public function setQueryVariables($queryVariables) |
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| 262 | |||
| 263 | /** |
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| 264 | * @return array|FragmentReference[] |
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| 265 | */ |
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| 266 | 74 | public function getFragmentReferences() |
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| 270 | |||
| 271 | /** |
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| 272 | * @param array $fragmentReferences |
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| 273 | */ |
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| 274 | public function setFragmentReferences($fragmentReferences) |
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| 278 | |||
| 279 | /** |
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| 280 | * @return array|VariableReference[] |
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| 281 | */ |
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| 282 | 70 | public function getVariableReferences() |
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| 286 | } |
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| 287 |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..