Complex classes like CachedParameterResolver 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 CachedParameterResolver, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
            ||
| 19 | class CachedParameterResolver implements ParameterResolverInterface  | 
            ||
| 20 | { | 
            ||
| 21 | /**  | 
            ||
| 22 | * @var ParameterResolverInterface  | 
            ||
| 23 | */  | 
            ||
| 24 | private $parameterResolver;  | 
            ||
| 25 | |||
| 26 | /**  | 
            ||
| 27 | * @var mixed[]  | 
            ||
| 28 | */  | 
            ||
| 29 | private $cache = [];  | 
            ||
| 30 | |||
| 31 | /**  | 
            ||
| 32 | * @param ParameterResolverInterface $parameterResolver  | 
            ||
| 33 | */  | 
            ||
| 34 | 29 | public function __construct(ParameterResolverInterface $parameterResolver)  | 
            |
| 38 | |||
| 39 | /**  | 
            ||
| 40 |      * {@inheritdoc} | 
            ||
| 41 | */  | 
            ||
| 42 | 1 | public function resolveApi()  | 
            |
| 48 | |||
| 49 | /**  | 
            ||
| 50 |      * {@inheritdoc} | 
            ||
| 51 | */  | 
            ||
| 52 | 2 | public function resolveCriteria($mandatory = false)  | 
            |
| 64 | |||
| 65 | /**  | 
            ||
| 66 |      * {@inheritdoc} | 
            ||
| 67 | */  | 
            ||
| 68 | 1 | public function resolveCurrentPage()  | 
            |
| 74 | |||
| 75 | /**  | 
            ||
| 76 |      * {@inheritdoc} | 
            ||
| 77 | */  | 
            ||
| 78 | 1 | public function resolveForm(ResourceInterface $resource)  | 
            |
| 84 | |||
| 85 | /**  | 
            ||
| 86 |      * {@inheritdoc} | 
            ||
| 87 | */  | 
            ||
| 88 | 1 | public function resolveGrid(ResourceInterface $resource)  | 
            |
| 94 | |||
| 95 | /**  | 
            ||
| 96 |      * {@inheritdoc} | 
            ||
| 97 | */  | 
            ||
| 98 | 1 | public function resolveHateoas()  | 
            |
| 104 | |||
| 105 | /**  | 
            ||
| 106 |      * {@inheritdoc} | 
            ||
| 107 | */  | 
            ||
| 108 | 1 | public function resolveLocationRoute()  | 
            |
| 114 | |||
| 115 | /**  | 
            ||
| 116 |      * {@inheritdoc} | 
            ||
| 117 | */  | 
            ||
| 118 | 1 | public function resolveLocationRouteParameters($object)  | 
            |
| 124 | |||
| 125 | /**  | 
            ||
| 126 |      * {@inheritdoc} | 
            ||
| 127 | */  | 
            ||
| 128 | 1 | public function resolveMaxPerPage()  | 
            |
| 134 | |||
| 135 | /**  | 
            ||
| 136 |      * {@inheritdoc} | 
            ||
| 137 | */  | 
            ||
| 138 | 1 | public function resolveRedirectRoute()  | 
            |
| 144 | |||
| 145 | /**  | 
            ||
| 146 |      * {@inheritdoc} | 
            ||
| 147 | */  | 
            ||
| 148 | 1 | public function resolveRedirectRouteParameters($object = null, $forwardParameters = false)  | 
            |
| 167 | |||
| 168 | /**  | 
            ||
| 169 | * @return bool  | 
            ||
| 170 | */  | 
            ||
| 171 | 1 | public function resolveRedirectRouteParametersForward()  | 
            |
| 177 | |||
| 178 | /**  | 
            ||
| 179 |      * {@inheritdoc} | 
            ||
| 180 | */  | 
            ||
| 181 | 1 | public function resolveRepositoryMethod($action)  | 
            |
| 187 | |||
| 188 | /**  | 
            ||
| 189 |      * {@inheritdoc} | 
            ||
| 190 | */  | 
            ||
| 191 | 1 | public function resolveSerializerGroups()  | 
            |
| 192 |     { | 
            ||
| 193 | 1 | return !isset($this->cache[$key = 'serializer_groups'])  | 
            |
| 194 | 1 | ? $this->cache[$key] = $this->parameterResolver->resolveSerializerGroups()  | 
            |
| 195 | 1 | : $this->cache[$key];  | 
            |
| 196 | }  | 
            ||
| 197 | |||
| 198 | /**  | 
            ||
| 199 |      * {@inheritdoc} | 
            ||
| 200 | */  | 
            ||
| 201 | 1 | public function resolveSerializerNull()  | 
            |
| 207 | |||
| 208 | /**  | 
            ||
| 209 |      * {@inheritdoc} | 
            ||
| 210 | */  | 
            ||
| 211 | 1 | public function resolveSorting()  | 
            |
| 217 | |||
| 218 | /**  | 
            ||
| 219 |      * {@inheritdoc} | 
            ||
| 220 | */  | 
            ||
| 221 | 1 | public function resolveStatusCode($statusCode)  | 
            |
| 227 | |||
| 228 | /**  | 
            ||
| 229 |      * {@inheritdoc} | 
            ||
| 230 | */  | 
            ||
| 231 | 1 | public function resolveTemplate()  | 
            |
| 237 | |||
| 238 | /**  | 
            ||
| 239 |      * {@inheritdoc} | 
            ||
| 240 | */  | 
            ||
| 241 | 1 | public function resolveThemes()  | 
            |
| 247 | |||
| 248 | /**  | 
            ||
| 249 |      * {@inheritdoc} | 
            ||
| 250 | */  | 
            ||
| 251 | 1 | public function resolveTranslationDomain()  | 
            |
| 257 | |||
| 258 | /**  | 
            ||
| 259 |      * {@inheritdoc} | 
            ||
| 260 | */  | 
            ||
| 261 | 1 | public function resolveValidationGroups()  | 
            |
| 267 | |||
| 268 | /**  | 
            ||
| 269 |      * {@inheritdoc} | 
            ||
| 270 | */  | 
            ||
| 271 | 1 | public function resolveVoter()  | 
            |
| 277 | }  | 
            ||
| 278 |