dynamic /
silverstripe-salsify
| Total Complexity | 41 |
| Total Lines | 286 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Mapper 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 Mapper, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 14 | class Mapper extends Service |
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| 15 | { |
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| 16 | |||
| 17 | /** |
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| 18 | * @var |
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| 19 | */ |
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| 20 | private $file = null; |
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| 21 | |||
| 22 | /** |
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| 23 | * @var JsonMachine |
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| 24 | */ |
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| 25 | private $productStream; |
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| 26 | |||
| 27 | /** |
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| 28 | * @var JsonMachine |
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| 29 | */ |
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| 30 | private $assetStream; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var array |
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| 34 | */ |
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| 35 | private $currentUniqueFields; |
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| 36 | |||
| 37 | /** |
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| 38 | * @var int |
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| 39 | */ |
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| 40 | private $importCount = 0; |
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| 41 | |||
| 42 | /** |
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| 43 | * Mapper constructor. |
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| 44 | * @param string $importerKey |
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| 45 | * @param $file |
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| 46 | * @throws \Exception |
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| 47 | */ |
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| 48 | public function __construct($importerKey, $file = null) |
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| 49 | { |
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| 50 | parent::__construct($importerKey); |
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| 51 | if (!$this->config()->get('mapping')) { |
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| 52 | throw new Exception('A Mapper needs a mapping'); |
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| 53 | } |
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| 54 | |||
| 55 | if ($file !== null) { |
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| 56 | $this->file = $file; |
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| 57 | $this->productStream = JsonMachine::fromFile($file, '/4/products'); |
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| 58 | $this->resetAssetStream(); |
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| 59 | } |
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| 60 | } |
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| 61 | |||
| 62 | /** |
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| 63 | * |
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| 64 | */ |
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| 65 | public function resetAssetStream() |
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| 66 | { |
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| 67 | $this->assetStream = JsonMachine::fromFile($this->file, '/3/digital_assets'); |
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| 68 | } |
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| 69 | |||
| 70 | /** |
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| 71 | * Maps the data |
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| 72 | * @throws \Exception |
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| 73 | */ |
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| 74 | public function map() |
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| 83 | } |
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| 84 | |||
| 85 | /** |
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| 86 | * @param string|DataObject $class |
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| 87 | * @param array $mappings The mapping for a specific class |
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| 88 | * @param array $data |
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| 89 | * |
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| 90 | * @return DataObject |
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| 91 | * @throws \Exception |
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| 92 | */ |
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| 93 | public function mapToObject($class, $mappings, $data) |
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| 137 | } |
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| 138 | |||
| 139 | /** |
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| 140 | * @param string $class |
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| 141 | * @param array $mappings |
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| 142 | * @param array $data |
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| 143 | * |
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| 144 | * @return \SilverStripe\ORM\DataObject |
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| 145 | */ |
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| 146 | private function findObjectByUnique($class, $mappings, $data) |
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| 147 | { |
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| 148 | $uniqueFields = $this->uniqueFields($mappings); |
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| 149 | // creates a filter |
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| 150 | $filter = []; |
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| 151 | foreach ($uniqueFields as $dbField => $salsifyField) { |
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| 152 | |||
| 153 | $modifiedData = $data; |
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| 154 | $fieldMapping = $mappings[$dbField]; |
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| 155 | if (array_key_exists('modification', $fieldMapping)) { |
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| 156 | $modifiedData = $this->handleModification( |
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| 157 | $fieldMapping['modification'], |
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| 158 | $dbField, |
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| 159 | $fieldMapping, |
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| 160 | $modifiedData |
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| 161 | ); |
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| 162 | } |
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| 163 | |||
| 164 | // adds unique fields to filter |
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| 165 | $filter[$dbField] = $modifiedData[$salsifyField]; |
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| 166 | } |
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| 167 | |||
| 168 | return DataObject::get($class)->filter($filter)->first(); |
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| 169 | } |
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| 170 | |||
| 171 | /** |
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| 172 | * Gets a list of all the unique field keys |
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| 173 | * |
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| 174 | * @param array $mappings |
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| 175 | * @return array |
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| 176 | */ |
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| 177 | private function uniqueFields($mappings) |
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| 178 | { |
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| 179 | // cached after first map |
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| 180 | if (!empty($this->currentUniqueFields)) { |
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| 181 | return $this->currentUniqueFields; |
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| 182 | } |
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| 183 | |||
| 184 | $uniqueFields = []; |
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| 185 | foreach ($mappings as $dbField => $salsifyField) { |
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| 186 | if (!is_array($salsifyField)) { |
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| 187 | continue; |
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| 188 | } |
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| 189 | |||
| 190 | if (!array_key_exists('unique', $salsifyField) || |
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| 191 | !array_key_exists('salsifyField', $salsifyField)) { |
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| 192 | continue; |
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| 193 | } |
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| 194 | |||
| 195 | if ($salsifyField['unique'] !== true) { |
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| 196 | continue; |
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| 197 | } |
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| 198 | |||
| 199 | $uniqueFields[$dbField] = $salsifyField['salsifyField']; |
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| 200 | } |
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| 201 | |||
| 202 | $this->currentUniqueFields = $uniqueFields; |
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| 203 | return $uniqueFields; |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * @param string $mod |
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| 208 | * @param string $dbField |
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| 209 | * @param array $config |
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| 210 | * @param array $data |
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| 211 | * @return array |
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| 212 | */ |
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| 213 | private function handleModification($mod, $dbField, $config, $data) |
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| 214 | { |
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| 215 | if ($this->hasMethod($mod)) { |
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| 216 | return $this->{$mod}($dbField, $config, $data); |
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| 217 | } |
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| 218 | ImportTask::output("{$mod} is not a valid field modifier. skipping modification for field {$dbField}."); |
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| 219 | return $data; |
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| 220 | } |
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| 221 | |||
| 222 | /** |
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| 223 | * @param string|array $field |
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| 224 | * @return string |
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| 225 | */ |
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| 226 | public function getFieldType($field) |
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| 227 | { |
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| 228 | $fieldTypes = $this->config()->get('field_types'); |
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| 229 | if (is_array($field) && array_key_exists('type', $field)) { |
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| 230 | if (in_array($field['type'], $fieldTypes)) { |
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| 231 | return $field['type']; |
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| 232 | } |
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| 233 | } |
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| 234 | return 'Raw'; |
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| 235 | } |
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| 236 | |||
| 237 | /** |
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| 238 | * @param int $type |
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| 239 | * @param array $salsifyData |
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| 240 | * @param string $salsifyField |
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| 241 | * @param array $dbFieldConfig |
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| 242 | * @param string $dbField |
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| 243 | * @param string $class |
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| 244 | * |
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| 245 | * @return mixed |
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| 246 | */ |
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| 247 | private function handleType($type, $salsifyData, $salsifyField, $dbFieldConfig, $dbField, $class) |
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| 248 | { |
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| 249 | if ($this->hasMethod("handle{$type}Type")) { |
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| 250 | return $this->{"handle{$type}Type"}($salsifyData, $salsifyField, $dbFieldConfig, $dbField, $class); |
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| 251 | } |
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| 252 | ImportTask::output("{$type} is not a valid type. skipping field {$dbField}."); |
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| 253 | return ''; |
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| 254 | } |
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| 255 | |||
| 256 | /** |
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| 257 | * @param DataObject $object |
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| 258 | * @param string $dbField |
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| 259 | * @param mixed $value |
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| 260 | * |
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| 261 | * @throws \Exception |
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| 262 | */ |
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| 263 | private function writeValue($object, $dbField, $value) |
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| 264 | { |
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| 265 | $isManyRelation = array_key_exists($dbField, $object->config()->get('has_many')) || |
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| 266 | array_key_exists($dbField, $object->config()->get('many_many')) || |
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| 267 | array_key_exists($dbField, $object->config()->get('belongs_many_many')); |
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| 268 | |||
| 269 | if (!$isManyRelation) { |
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| 270 | $object->$dbField = $value; |
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| 271 | return; |
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| 272 | } |
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| 273 | |||
| 274 | if (!$object->exists()) { |
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| 275 | $object->write(); |
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| 276 | } |
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| 277 | |||
| 278 | if (is_array($value)) { |
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| 279 | $object->{$dbField}()->addMany($value); |
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| 280 | return; |
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| 281 | } |
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| 282 | |||
| 283 | $object->{$dbField}()->add($value); |
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| 284 | } |
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| 285 | |||
| 286 | /** |
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| 287 | * @return \JsonMachine\JsonMachine |
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| 288 | */ |
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| 289 | public function getAssetStream() |
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| 290 | { |
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| 291 | return $this->assetStream; |
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| 292 | } |
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| 293 | |||
| 294 | /** |
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| 295 | * @return bool |
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| 296 | */ |
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| 297 | public function hasFile() |
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| 300 | } |
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| 301 | } |
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| 302 |
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