Complex classes like AbstractEntity 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 AbstractEntity, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 10 | abstract class AbstractEntity implements EntityInterface  | 
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| 11 | { | 
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| 12 | /**  | 
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| 13 | * @var array  | 
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| 14 | */  | 
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| 15 | protected $data = [];  | 
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| 16 | |||
| 17 | /**  | 
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| 18 | * @var array  | 
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| 19 | */  | 
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| 20 | protected $mapping = [];  | 
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| 21 | |||
| 22 | /**  | 
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| 23 | * @var array  | 
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| 24 | */  | 
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| 25 | protected $relationshipMap = [];  | 
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| 26 | |||
| 27 | /**  | 
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| 28 | * @var array  | 
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| 29 | */  | 
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| 30 | protected $relationships = [];  | 
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| 31 | |||
| 32 | /**  | 
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| 33 | * @var array  | 
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| 34 | */  | 
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| 35 | protected $decorators = [];  | 
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| 36 | |||
| 37 | /**  | 
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| 38 | * @var string  | 
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| 39 | */  | 
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| 40 | protected $validator;  | 
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| 41 | |||
| 42 | /**  | 
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| 43 | * @var string  | 
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| 44 | */  | 
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| 45 | protected $readScope;  | 
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| 46 | |||
| 47 | /**  | 
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| 48 | * @var string  | 
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| 49 | */  | 
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| 50 | protected $writeScope;  | 
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| 51 | |||
| 52 | /**  | 
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| 53 |      * {@inheritdoc} | 
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| 54 | */  | 
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| 55 | 1 | public function toArray(array $scopes = [])  | 
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| 67 | |||
| 68 | /**  | 
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| 69 |      * {@inheritdoc} | 
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| 70 | */  | 
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| 71 | 2 | public function getData(array $scopes = [], $toPersist = false)  | 
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| 107 | |||
| 108 | /**  | 
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| 109 |      * {@inheritdoc} | 
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| 110 | */  | 
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| 111 | public function getMapping()  | 
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| 117 | |||
| 118 | /**  | 
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| 119 |      * {@inheritdoc} | 
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| 120 | */  | 
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| 121 | 1 | public function getRelationshipMap()  | 
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| 125 | |||
| 126 | /**  | 
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| 127 |      * {@inheritdoc} | 
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| 128 | */  | 
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| 129 | 2 | public function getRelationships()  | 
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| 133 | |||
| 134 | /**  | 
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| 135 |      * {@inheritdoc} | 
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| 136 | */  | 
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| 137 | 1 | public function addRelationship($relationship, Collection $collection)  | 
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| 143 | |||
| 144 | /**  | 
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| 145 |      * {@inheritdoc} | 
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| 146 | */  | 
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| 147 | 3 | public function getDecorators($action = null)  | 
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| 158 | |||
| 159 | /**  | 
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| 160 |      * {@inheritdoc} | 
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| 161 | */  | 
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| 162 | 1 | public function getValidator()  | 
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| 166 | |||
| 167 | /**  | 
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| 168 |      * {@inheritdoc} | 
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| 169 | */  | 
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| 170 | 4 | public function hydrate(array $data)  | 
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| 178 | |||
| 179 | /**  | 
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| 180 |      * {@inheritdoc} | 
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| 181 | */  | 
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| 182 | 3 | public function offsetSet($offset, $value)  | 
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| 198 | |||
| 199 | /**  | 
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| 200 |      * {@inheritdoc} | 
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| 201 | */  | 
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| 202 | 2 | public function offsetGet($offset)  | 
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| 212 | |||
| 213 | /**  | 
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| 214 |      * {@inheritdoc} | 
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| 215 | */  | 
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| 216 | 1 | public function offsetExists($offset)  | 
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| 220 | |||
| 221 | /**  | 
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| 222 |      * {@inheritdoc} | 
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| 223 | */  | 
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| 224 | 1 | public function offsetUnset($offset)  | 
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| 228 | |||
| 229 | /**  | 
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| 230 |      * {@inheritdoc} | 
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| 231 | */  | 
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| 232 | 2 | public function getReadScope()  | 
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| 236 | |||
| 237 | /**  | 
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| 238 |      * {@inheritdoc} | 
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| 239 | */  | 
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| 240 | 2 | public function getWriteScope()  | 
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| 244 | }  | 
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| 245 |