Complex classes like Role 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 Role, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 24 | class Role extends EventSourcedAggregateRoot  | 
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| 25 | { | 
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| 26 | /**  | 
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| 27 | * @var UUID  | 
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| 28 | */  | 
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| 29 | private $uuid;  | 
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| 30 | |||
| 31 | /**  | 
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| 32 | * @var StringLiteral  | 
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| 33 | */  | 
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| 34 | private $name;  | 
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| 35 | |||
| 36 | /**  | 
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| 37 | * @var Query[]  | 
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| 38 | */  | 
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| 39 | private $queries = [];  | 
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| 40 | |||
| 41 | /**  | 
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| 42 | * @var Permission[]  | 
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| 43 | */  | 
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| 44 | private $permissions = [];  | 
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| 45 | |||
| 46 | /**  | 
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| 47 | * @var UUID[]  | 
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| 48 | */  | 
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| 49 | private $labelIds = [];  | 
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| 50 | |||
| 51 | /**  | 
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| 52 | * @var StringLiteral[]  | 
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| 53 | */  | 
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| 54 | private $userIds = [];  | 
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| 55 | |||
| 56 | /**  | 
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| 57 | * @return string  | 
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| 58 | */  | 
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| 59 | public function getAggregateRootId()  | 
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| 63 | |||
| 64 | /**  | 
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| 65 | * @param UUID $uuid  | 
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| 66 | * @param StringLiteral $name  | 
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| 67 | * @return Role  | 
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| 68 | */  | 
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| 69 | public static function create(  | 
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| 82 | |||
| 83 | /**  | 
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| 84 | * Rename the role.  | 
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| 85 | *  | 
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| 86 | * @param UUID $uuid  | 
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| 87 | * @param StringLiteral $name  | 
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| 88 | */  | 
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| 89 | public function rename(  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | * Set a constraint on the role.  | 
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| 98 | *  | 
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| 99 | * @param UUID $uuid  | 
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| 100 | * @param StringLiteral $query  | 
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| 101 | */  | 
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| 102 | public function setConstraint(  | 
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| 119 | |||
| 120 | /**  | 
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| 121 | * @param SapiVersion $sapiVersion  | 
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| 122 | * @param Query $query  | 
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| 123 | */  | 
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| 124 | public function addConstraint(SapiVersion $sapiVersion, Query $query): void  | 
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| 130 | |||
| 131 | /**  | 
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| 132 | * @param SapiVersion $sapiVersion  | 
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| 133 | * @param Query $query  | 
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| 134 | */  | 
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| 135 | public function updateConstraint(SapiVersion $sapiVersion, Query $query): void  | 
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| 142 | |||
| 143 | /**  | 
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| 144 | * @param SapiVersion $sapiVersion  | 
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| 145 | */  | 
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| 146 | public function removeConstraint(SapiVersion $sapiVersion): void  | 
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| 152 | |||
| 153 | /**  | 
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| 154 | * @param SapiVersion $sapiVersion  | 
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| 155 | * @return bool  | 
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| 156 | */  | 
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| 157 | private function queryEmpty(SapiVersion $sapiVersion): bool  | 
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| 161 | |||
| 162 | /**  | 
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| 163 | * @param SapiVersion $sapiVersion  | 
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| 164 | * @param Query $query  | 
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| 165 | * @return bool  | 
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| 166 | */  | 
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| 167 | private function querySameValue(SapiVersion $sapiVersion, Query $query): bool  | 
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| 171 | |||
| 172 | /**  | 
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| 173 | * Add a permission to the role.  | 
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| 174 | *  | 
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| 175 | * @param UUID $uuid  | 
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| 176 | * @param Permission $permission  | 
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| 177 | */  | 
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| 178 | public function addPermission(  | 
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| 186 | |||
| 187 | /**  | 
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| 188 | * Remove a permission from the role.  | 
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| 189 | *  | 
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| 190 | * @param UUID $uuid  | 
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| 191 | * @param Permission $permission  | 
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| 192 | */  | 
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| 193 | public function removePermission(  | 
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| 201 | |||
| 202 | /**  | 
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| 203 | * @param UUID $labelId  | 
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| 204 | */  | 
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| 205 | public function addLabel(  | 
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| 212 | |||
| 213 | /**  | 
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| 214 | * @param \ValueObjects\Identity\UUID $labelId  | 
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| 215 | */  | 
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| 216 | public function removeLabel(  | 
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| 223 | |||
| 224 | /**  | 
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| 225 | * @param StringLiteral $userId  | 
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| 226 | */  | 
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| 227 | public function addUser(  | 
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| 234 | |||
| 235 | /**  | 
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| 236 | * @param StringLiteral $userId  | 
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| 237 | */  | 
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| 238 | public function removeUser(  | 
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| 245 | |||
| 246 | /**  | 
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| 247 | * Delete a role.  | 
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| 248 | *  | 
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| 249 | * @param UUID $uuid  | 
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| 250 | */  | 
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| 251 | public function delete(  | 
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| 256 | |||
| 257 | /**  | 
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| 258 | * @param RoleCreated $roleCreated  | 
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| 259 | */  | 
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| 260 | public function applyRoleCreated(RoleCreated $roleCreated)  | 
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| 265 | |||
| 266 | /**  | 
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| 267 | * @param RoleRenamed $roleRenamed  | 
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| 268 | */  | 
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| 269 | public function applyRoleRenamed(RoleRenamed $roleRenamed)  | 
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| 273 | |||
| 274 | /**  | 
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| 275 | * @param ConstraintAdded $constraintAdded  | 
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| 276 | */  | 
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| 277 | public function applyConstraintAdded(ConstraintAdded $constraintAdded)  | 
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| 281 | |||
| 282 | /**  | 
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| 283 | * @param ConstraintUpdated $constraintUpdated  | 
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| 284 | */  | 
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| 285 | public function applyConstraintUpdated(ConstraintUpdated $constraintUpdated)  | 
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| 289 | |||
| 290 | /**  | 
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| 291 | * @param ConstraintRemoved $constraintRemoved  | 
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| 292 | */  | 
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| 293 | public function applyConstraintRemoved(ConstraintRemoved $constraintRemoved)  | 
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| 297 | |||
| 298 | /**  | 
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| 299 | * @param PermissionAdded $permissionAdded  | 
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| 300 | */  | 
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| 301 | public function applyPermissionAdded(PermissionAdded $permissionAdded)  | 
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| 307 | |||
| 308 | /**  | 
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| 309 | * @param PermissionRemoved $permissionRemoved  | 
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| 310 | */  | 
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| 311 | public function applyPermissionRemoved(PermissionRemoved $permissionRemoved)  | 
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| 317 | |||
| 318 | /**  | 
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| 319 | * @param LabelAdded $labelAdded  | 
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| 320 | */  | 
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| 321 | public function applyLabelAdded(LabelAdded $labelAdded)  | 
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| 326 | |||
| 327 | /**  | 
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| 328 | * @param LabelRemoved $labelRemoved  | 
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| 329 | */  | 
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| 330 | public function applyLabelRemoved(LabelRemoved $labelRemoved)  | 
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| 335 | |||
| 336 | /**  | 
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| 337 | * @param UserAdded $userAdded  | 
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| 338 | */  | 
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| 339 | public function applyUserAdded(UserAdded $userAdded)  | 
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| 344 | |||
| 345 | /**  | 
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| 346 | * @param UserRemoved $userRemoved  | 
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| 347 | */  | 
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| 348 | public function applyUserRemoved(UserRemoved $userRemoved)  | 
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| 356 | }  | 
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| 357 |