vanilla /
garden-schema
Complex classes like Schema often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. 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 Schema, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class Schema implements \JsonSerializable { |
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| 14 | /** |
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| 15 | * Trigger a notice when extraneous properties are encountered during validation. |
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| 16 | */ |
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| 17 | const VALIDATE_EXTRA_PROPERTY_NOTICE = 0x1; |
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| 18 | |||
| 19 | /** |
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| 20 | * Throw a ValidationException when extraneous properties are encountered during validation. |
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| 21 | */ |
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| 22 | const VALIDATE_EXTRA_PROPERTY_EXCEPTION = 0x2; |
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| 23 | |||
| 24 | /** |
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| 25 | * @var array All the known types. |
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| 26 | * |
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| 27 | * If this is ever given some sort of public access then remove the static. |
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| 28 | */ |
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| 29 | private static $types = [ |
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| 30 | 'array' => ['a'], |
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| 31 | 'object' => ['o'], |
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| 32 | 'integer' => ['i', 'int'], |
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| 33 | 'string' => ['s', 'str'], |
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| 34 | 'number' => ['f', 'float'], |
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| 35 | 'boolean' => ['b', 'bool'], |
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| 36 | 'timestamp' => ['ts'], |
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| 37 | 'datetime' => ['dt'], |
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| 38 | 'null' => ['n'] |
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| 39 | ]; |
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| 40 | |||
| 41 | private $schema = []; |
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| 42 | |||
| 43 | /** |
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| 44 | * @var int A bitwise combination of the various **Schema::FLAG_*** constants. |
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| 45 | */ |
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| 46 | private $flags = 0; |
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| 47 | |||
| 48 | /** |
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| 49 | * @var array An array of callbacks that will custom validate the schema. |
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| 50 | */ |
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| 51 | private $validators = []; |
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| 52 | |||
| 53 | /** |
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| 54 | * @var string|Validation The name of the class or an instance that will be cloned. |
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| 55 | */ |
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| 56 | private $validationClass = Validation::class; |
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| 57 | |||
| 58 | |||
| 59 | /// Methods /// |
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| 60 | |||
| 61 | /** |
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| 62 | * Initialize an instance of a new {@link Schema} class. |
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| 63 | * |
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| 64 | * @param array $schema The array schema to validate against. |
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| 65 | */ |
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| 66 | 161 | public function __construct($schema = []) { |
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| 69 | |||
| 70 | /** |
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| 71 | * Grab the schema's current description. |
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| 72 | * |
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| 73 | * @return string |
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| 74 | */ |
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| 75 | 1 | public function getDescription() { |
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| 78 | |||
| 79 | /** |
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| 80 | * Set the description for the schema. |
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| 81 | * |
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| 82 | * @param string $description The new description. |
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| 83 | * @throws \InvalidArgumentException Throws an exception when the provided description is not a string. |
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| 84 | * @return Schema |
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| 85 | */ |
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| 86 | 2 | public function setDescription($description) { |
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| 95 | |||
| 96 | /** |
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| 97 | * Get a schema field. |
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| 98 | * |
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| 99 | * @param string|array $path The JSON schema path of the field with parts separated by dots. |
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| 100 | * @param mixed $default The value to return if the field isn't found. |
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| 101 | * @return mixed Returns the field value or `$default`. |
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| 102 | */ |
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| 103 | 4 | public function getField($path, $default = null) { |
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| 120 | |||
| 121 | /** |
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| 122 | * Set a schema field. |
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| 123 | * |
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| 124 | * @param string|array $path The JSON schema path of the field with parts separated by dots. |
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| 125 | * @param mixed $value The new value. |
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| 126 | * @return $this |
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| 127 | */ |
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| 128 | 3 | public function setField($path, $value) { |
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| 151 | |||
| 152 | /** |
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| 153 | * Get the ID for the schema. |
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| 154 | * |
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| 155 | * @return string |
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| 156 | */ |
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| 157 | 2 | public function getID() { |
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| 160 | |||
| 161 | /** |
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| 162 | * Set the ID for the schema. |
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| 163 | * |
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| 164 | * @param string $ID The new ID. |
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| 165 | * @throws \InvalidArgumentException Throws an exception when the provided ID is not a string. |
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| 166 | * @return Schema |
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| 167 | */ |
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| 168 | public function setID($ID) { |
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| 177 | |||
| 178 | /** |
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| 179 | * Return the validation flags. |
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| 180 | * |
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| 181 | * @return int Returns a bitwise combination of flags. |
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| 182 | */ |
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| 183 | 1 | public function getFlags() { |
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| 186 | |||
| 187 | /** |
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| 188 | * Set the validation flags. |
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| 189 | * |
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| 190 | * @param int $flags One or more of the **Schema::FLAG_*** constants. |
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| 191 | * @return Schema Returns the current instance for fluent calls. |
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| 192 | */ |
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| 193 | 8 | public function setFlags($flags) { |
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| 201 | |||
| 202 | /** |
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| 203 | * Whether or not the schema has a flag (or combination of flags). |
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| 204 | * |
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| 205 | * @param int $flag One or more of the **Schema::VALIDATE_*** constants. |
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| 206 | * @return bool Returns **true** if all of the flags are set or **false** otherwise. |
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| 207 | */ |
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| 208 | 18 | public function hasFlag($flag) { |
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| 211 | |||
| 212 | /** |
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| 213 | * Set a flag. |
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| 214 | * |
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| 215 | * @param int $flag One or more of the **Schema::VALIDATE_*** constants. |
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| 216 | * @param bool $value Either true or false. |
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| 217 | * @return $this |
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| 218 | */ |
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| 219 | 1 | public function setFlag($flag, $value) { |
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| 227 | |||
| 228 | /** |
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| 229 | * Merge a schema with this one. |
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| 230 | * |
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| 231 | * @param Schema $schema A scheme instance. Its parameters will be merged into the current instance. |
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| 232 | * @return $this |
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| 233 | */ |
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| 234 | 3 | public function merge(Schema $schema) { |
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| 238 | |||
| 239 | /** |
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| 240 | * Add another schema to this one. |
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| 241 | * |
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| 242 | * Adding schemas together is analogous to array addition. When you add a schema it will only add missing information. |
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| 243 | * |
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| 244 | * @param Schema $schema The schema to add. |
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| 245 | * @param bool $addProperties Whether to add properties that don't exist in this schema. |
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| 246 | * @return $this |
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| 247 | */ |
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| 248 | 3 | public function add(Schema $schema, $addProperties = false) { |
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| 252 | |||
| 253 | /** |
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| 254 | * The internal implementation of schema merging. |
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| 255 | * |
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| 256 | * @param array &$target The target of the merge. |
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| 257 | * @param array $source The source of the merge. |
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| 258 | * @param bool $overwrite Whether or not to replace values. |
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| 259 | * @param bool $addProperties Whether or not to add object properties to the target. |
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| 260 | * @return array |
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| 261 | */ |
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| 262 | 6 | private function mergeInternal(array &$target, array $source, $overwrite = true, $addProperties = true) { |
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| 314 | |||
| 315 | // public function overlay(Schema $schema ) |
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| 316 | |||
| 317 | /** |
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| 318 | * Returns the internal schema array. |
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| 319 | * |
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| 320 | * @return array |
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| 321 | * @see Schema::jsonSerialize() |
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| 322 | */ |
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| 323 | 15 | public function getSchemaArray() { |
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| 326 | |||
| 327 | /** |
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| 328 | * Parse a short schema and return the associated schema. |
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| 329 | * |
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| 330 | * @param array $arr The schema array. |
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| 331 | * @param mixed ...$args Constructor arguments for the schema instance. |
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| 332 | * @return static Returns a new schema. |
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| 333 | */ |
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| 334 | 156 | public static function parse(array $arr, ...$args) { |
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| 339 | |||
| 340 | /** |
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| 341 | * Parse a schema in short form into a full schema array. |
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| 342 | * |
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| 343 | * @param array $arr The array to parse into a schema. |
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| 344 | * @return array The full schema array. |
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| 345 | * @throws \InvalidArgumentException Throws an exception when an item in the schema is invalid. |
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| 346 | */ |
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| 347 | 156 | protected function parseInternal(array $arr) { |
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| 379 | |||
| 380 | /** |
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| 381 | * Parse a schema node. |
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| 382 | * |
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| 383 | * @param array $node The node to parse. |
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| 384 | * @param mixed $value Additional information from the node. |
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| 385 | * @return array Returns a JSON schema compatible node. |
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| 386 | */ |
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| 387 | 150 | private function parseNode($node, $value = null) { |
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| 437 | |||
| 438 | /** |
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| 439 | * Parse the schema for an object's properties. |
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| 440 | * |
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| 441 | * @param array $arr An object property schema. |
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| 442 | * @return array Returns a schema array suitable to be placed in the **properties** key of a schema. |
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| 443 | */ |
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| 444 | 98 | private function parseProperties(array $arr) { |
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| 470 | |||
| 471 | /** |
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| 472 | * Parse a short parameter string into a full array parameter. |
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| 473 | * |
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| 474 | * @param string $key The short parameter string to parse. |
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| 475 | * @param array $value An array of other information that might help resolve ambiguity. |
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| 476 | * @return array Returns an array in the form `[string name, array param, bool required]`. |
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| 477 | * @throws \InvalidArgumentException Throws an exception if the short param is not in the correct format. |
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| 478 | */ |
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| 479 | 150 | public function parseShortParam($key, $value = []) { |
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| 537 | |||
| 538 | /** |
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| 539 | * Add a custom validator to to validate the schema. |
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| 540 | * |
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| 541 | * @param string $fieldname The name of the field to validate, if any. |
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| 542 | * |
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| 543 | * If you are adding a validator to a deeply nested field then separate the path with dots. |
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| 544 | * @param callable $callback The callback to validate with. |
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| 545 | * @return Schema Returns `$this` for fluent calls. |
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| 546 | */ |
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| 547 | 2 | public function addValidator($fieldname, callable $callback) { |
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| 551 | |||
| 552 | /** |
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| 553 | * Require one of a given set of fields in the schema. |
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| 554 | * |
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| 555 | * @param array $required The field names to require. |
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| 556 | * @param string $fieldname The name of the field to attach to. |
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| 557 | * @param int $count The count of required items. |
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| 558 | * @return Schema Returns `$this` for fluent calls. |
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| 559 | */ |
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| 560 | 1 | public function requireOneOf(array $required, $fieldname = '', $count = 1) { |
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| 609 | |||
| 610 | /** |
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| 611 | * Validate data against the schema. |
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| 612 | * |
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| 613 | * @param mixed $data The data to validate. |
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| 614 | * @param bool $sparse Whether or not this is a sparse validation. |
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| 615 | * @return mixed Returns a cleaned version of the data. |
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| 616 | * @throws ValidationException Throws an exception when the data does not validate against the schema. |
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| 617 | */ |
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| 618 | 126 | public function validate($data, $sparse = false) { |
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| 634 | |||
| 635 | /** |
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| 636 | * Validate data against the schema and return the result. |
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| 637 | * |
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| 638 | * @param mixed $data The data to validate. |
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| 639 | * @param bool $sparse Whether or not to do a sparse validation. |
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| 640 | * @return bool Returns true if the data is valid. False otherwise. |
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| 641 | */ |
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| 642 | 33 | public function isValid($data, $sparse = false) { |
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| 650 | |||
| 651 | /** |
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| 652 | * Validate a field. |
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| 653 | * |
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| 654 | * @param mixed $value The value to validate. |
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| 655 | * @param ValidationField $field A validation object to add errors to. |
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| 656 | * @param bool $sparse Whether or not this is a sparse validation. |
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| 657 | * @return mixed|Invalid Returns a clean version of the value with all extra fields stripped out or invalid if the value |
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| 658 | * is completely invalid. |
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| 659 | */ |
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| 660 | 126 | protected function validateField($value, ValidationField $field, $sparse = false) { |
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| 719 | |||
| 720 | /** |
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| 721 | * Validate an array. |
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| 722 | * |
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| 723 | * @param mixed $value The value to validate. |
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| 724 | * @param ValidationField $field The validation results to add. |
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| 725 | * @param bool $sparse Whether or not this is a sparse validation. |
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| 726 | * @return array|Invalid Returns an array or invalid if validation fails. |
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| 727 | */ |
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| 728 | 14 | protected function validateArray($value, ValidationField $field, $sparse = false) { |
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| 760 | |||
| 761 | /** |
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| 762 | * Validate a boolean value. |
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| 763 | * |
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| 764 | * @param mixed $value The value to validate. |
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| 765 | * @param ValidationField $field The validation results to add. |
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| 766 | * @return bool|Invalid Returns the cleaned value or invalid if validation fails. |
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| 767 | */ |
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| 768 | 21 | protected function validateBoolean($value, ValidationField $field) { |
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| 776 | |||
| 777 | /** |
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| 778 | * Validate a date time. |
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| 779 | * |
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| 780 | * @param mixed $value The value to validate. |
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| 781 | * @param ValidationField $field The validation results to add. |
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| 782 | * @return \DateTimeInterface|Invalid Returns the cleaned value or **null** if it isn't valid. |
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| 783 | */ |
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| 784 | 12 | protected function validateDatetime($value, ValidationField $field) { |
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| 809 | |||
| 810 | /** |
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| 811 | * Validate a float. |
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| 812 | * |
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| 813 | * @param mixed $value The value to validate. |
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| 814 | * @param ValidationField $field The validation results to add. |
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| 815 | * @return float|Invalid Returns a number or **null** if validation fails. |
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| 816 | */ |
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| 817 | 8 | protected function validateNumber($value, ValidationField $field) { |
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| 825 | |||
| 826 | /** |
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| 827 | * Validate and integer. |
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| 828 | * |
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| 829 | * @param mixed $value The value to validate. |
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| 830 | * @param ValidationField $field The validation results to add. |
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| 831 | * @return int|Invalid Returns the cleaned value or **null** if validation fails. |
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| 832 | */ |
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| 833 | 24 | protected function validateInteger($value, ValidationField $field) { |
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| 842 | |||
| 843 | /** |
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| 844 | * Validate an object. |
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| 845 | * |
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| 846 | * @param mixed $value The value to validate. |
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| 847 | * @param ValidationField $field The validation results to add. |
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| 848 | * @param bool $sparse Whether or not this is a sparse validation. |
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| 849 | * @return object|Invalid Returns a clean object or **null** if validation fails. |
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| 850 | */ |
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| 851 | 86 | protected function validateObject($value, ValidationField $field, $sparse = false) { |
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| 863 | |||
| 864 | /** |
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| 865 | * Validate data against the schema and return the result. |
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| 866 | * |
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| 867 | * @param array|\ArrayAccess $data The data to validate. |
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| 868 | * @param ValidationField $field This argument will be filled with the validation result. |
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| 869 | * @param bool $sparse Whether or not this is a sparse validation. |
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| 870 | * @return array|Invalid Returns a clean array with only the appropriate properties and the data coerced to proper types. |
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| 871 | * or invalid if there are no valid properties. |
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| 872 | */ |
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| 873 | 85 | protected function validateProperties($data, ValidationField $field, $sparse = false) { |
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| 938 | |||
| 939 | /** |
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| 940 | * Validate a string. |
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| 941 | * |
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| 942 | * @param mixed $value The value to validate. |
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| 943 | * @param ValidationField $field The validation results to add. |
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| 944 | * @return string|Invalid Returns the valid string or **null** if validation fails. |
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| 945 | */ |
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| 946 | 55 | protected function validateString($value, ValidationField $field) { |
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| 1035 | |||
| 1036 | /** |
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| 1037 | * Validate a unix timestamp. |
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| 1038 | * |
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| 1039 | * @param mixed $value The value to validate. |
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| 1040 | * @param ValidationField $field The field being validated. |
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| 1041 | * @return int|Invalid Returns a valid timestamp or invalid if the value doesn't validate. |
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| 1042 | */ |
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| 1043 | 7 | protected function validateTimestamp($value, ValidationField $field) { |
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| 1054 | |||
| 1055 | /** |
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| 1056 | * Validate a null value. |
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| 1057 | * |
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| 1058 | * @param mixed $value The value to validate. |
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| 1059 | * @param ValidationField $field The error collector for the field. |
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| 1060 | * @return null|Invalid Returns **null** or invalid. |
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| 1061 | */ |
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| 1062 | protected function validateNull($value, ValidationField $field) { |
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| 1069 | |||
| 1070 | /** |
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| 1071 | * Validate a value against an enum. |
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| 1072 | * |
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| 1073 | * @param mixed $value The value to test. |
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| 1074 | * @param ValidationField $field The validation object for adding errors. |
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| 1075 | * @return mixed|Invalid Returns the value if it is one of the enumerated values or invalid otherwise. |
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| 1076 | */ |
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| 1077 | 124 | protected function validateEnum($value, ValidationField $field) { |
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| 1096 | |||
| 1097 | /** |
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| 1098 | * Call all of the validators attached to a field. |
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| 1099 | * |
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| 1100 | * @param mixed $value The field value being validated. |
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| 1101 | * @param ValidationField $field The validation object to add errors. |
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| 1102 | */ |
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| 1103 | 124 | protected function callValidators($value, ValidationField $field) { |
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| 1123 | |||
| 1124 | /** |
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| 1125 | * Specify data which should be serialized to JSON. |
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| 1126 | * |
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| 1127 | * This method specifically returns data compatible with the JSON schema format. |
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| 1128 | * |
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| 1129 | * @return mixed Returns data which can be serialized by **json_encode()**, which is a value of any type other than a resource. |
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| 1130 | * @link http://php.net/manual/en/jsonserializable.jsonserialize.php |
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| 1131 | * @link http://json-schema.org/ |
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| 1132 | */ |
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| 1133 | public function jsonSerialize() { |
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| 1168 | |||
| 1169 | /** |
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| 1170 | * Look up a type based on its alias. |
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| 1171 | * |
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| 1172 | * @param string $alias The type alias or type name to lookup. |
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| 1173 | * @return mixed |
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| 1174 | */ |
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| 1175 | 149 | protected function getType($alias) { |
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| 1186 | |||
| 1187 | /** |
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| 1188 | * Get the class that's used to contain validation information. |
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| 1189 | * |
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| 1190 | * @return Validation|string Returns the validation class. |
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| 1191 | */ |
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| 1192 | 126 | public function getValidationClass() { |
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| 1195 | |||
| 1196 | /** |
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| 1197 | * Set the class that's used to contain validation information. |
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| 1198 | * |
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| 1199 | * @param Validation|string $class Either the name of a class or a class that will be cloned. |
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| 1200 | * @return $this |
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| 1201 | */ |
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| 1202 | 1 | public function setValidationClass($class) { |
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| 1210 | |||
| 1211 | /** |
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| 1212 | * Create a new validation instance. |
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| 1213 | * |
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| 1214 | * @return Validation Returns a validation object. |
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| 1215 | */ |
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| 1216 | 126 | protected function createValidation() { |
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| 1226 | |||
| 1227 | /** |
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| 1228 | * Check whether or not a value is an array or accessible like an array. |
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| 1229 | * |
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| 1230 | * @param mixed $value The value to check. |
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| 1231 | * @return bool Returns **true** if the value can be used like an array or **false** otherwise. |
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| 1232 | */ |
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| 1233 | 86 | private function isArray($value) { |
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| 1236 | |||
| 1237 | /** |
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| 1238 | * Cast a value to an array. |
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| 1239 | * |
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| 1240 | * @param \Traversable $value The value to convert. |
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| 1241 | * @return array Returns an array. |
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| 1242 | */ |
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| 1243 | private function toArray(\Traversable $value) { |
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| 1249 | |||
| 1250 | /** |
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| 1251 | * Return a sparse version of this schema. |
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| 1252 | * |
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| 1253 | * A sparse schema has no required properties. |
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| 1254 | * |
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| 1255 | * @return Schema Returns a new sparse schema. |
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| 1256 | */ |
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| 1257 | 2 | public function withSparse() { |
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| 1261 | |||
| 1262 | /** |
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| 1263 | * The internal implementation of `Schema::withSparse()`. |
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| 1264 | * |
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| 1265 | * @param array|Schema $schema The schema to make sparse. |
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| 1266 | * @param \SplObjectStorage $schemas Collected sparse schemas that have already been made. |
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| 1267 | * @return mixed |
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| 1268 | */ |
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| 1269 | 2 | private function withSparseInternal($schema, \SplObjectStorage $schemas) { |
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| 1297 | } |
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| 1298 |
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This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line.
To visualize
will produce issues in the first and second line, while this second example
will produce no issues.