AssociationStubFactory::getHandlerMethod() - Code Metrics - Inspection of "Association stub rework" - Algo-Web/POData-Laravel - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#221)

by Christopher

created 2020-02-26 14:53 UTC

AssociationStubFactory::getHandlerMethod() A

↳ Parent: AssociationStubFactory

Complexity

Conditions	1
Paths	1

Size

Total Lines	14
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
eloc	11
c	2
b	0
f	0
dl	0
loc	14
rs	9.9
cc	1
nc	1
nop	1

<?php
declare(strict_types=1);

namespace AlgoWeb\PODataLaravel\Models\ObjectMap\Entities\Associations;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasManyThrough;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Database\Eloquent\Relations\MorphMany;
use Illuminate\Database\Eloquent\Relations\MorphOne;
use Illuminate\Database\Eloquent\Relations\MorphTo;
use Illuminate\Database\Eloquent\Relations\MorphToMany;
use Illuminate\Database\Eloquent\Relations\Relation;
use POData\Common\InvalidOperationException;

abstract class AssociationStubFactory
{
    /**
     * @param Model $parent
     * @param string $name
     * @param Relation $relation
     * @return AssociationStubBase
     * @throws InvalidOperationException
     */
    public static function associationStubFromRelation(Model $parent, string $name): AssociationStubBase
    {
        $relation = $parent->{$name}();
        $handler = self::getHandlerMethod($relation);
        /**
         * @var AssociationStubBase $stub
         */
        $stub = self::{'handle' . $handler}($name, $relation);
        $stub->setBaseType(get_class($parent));
        if (!$stub->isOk()) {
            throw new InvalidOperationException('Generated stub not consistent');
        }
        return $stub;
    }

    private static function getHandlerMethod(Relation $relation):string
    {
        $methods = [];
        $methods[$relation instanceof BelongsTo] = 'BelongsTo'; //DONE
        $methods[$relation instanceof MorphTo] = 'MorphTo'; //DONE
        $methods[$relation instanceof BelongsToMany] = 'BelongsToMany'; //DONE
        $methods[$relation instanceof MorphToMany] = 'MorphToMany'; // DONE
        $methods[$relation instanceof HasOne] = 'HasOne';
        $methods[$relation instanceof HasMany] = 'HasMany';
        $methods[$relation instanceof HasManyThrough] = 'HasManyThrough'; //DONE
        $methods[$relation instanceof MorphMany] = 'MorphMany';
        $methods[$relation instanceof MorphOne] = 'MorphOne';

        return $methods[true];
    }

    /**
     * @param  string              $name
     * @param  Relation            $relation
     * @param  string              $cacheKey
     * @return AssociationStubMonomorphic
     */
    protected static function handleBelongsTo(string $name, Relation $relation, $cacheKey = 'BelongsTo'): AssociationStubMonomorphic
    {
        $stub = new AssociationStubMonomorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[1]);
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setMultiplicity(AssociationStubRelationType::ONE());
        return $stub;
    }

    /**
     * @param  string              $name
     * @param  Relation            $relation
     * @param  string              $cacheKey
     * @return AssociationStubPolymorphic
     */
    protected static function handleMorphTo(string $name, Relation $relation, $cacheKey = 'MorphTo') : AssociationStubPolymorphic
    {
        $stub = new AssociationStubPolymorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[2] ?: $relation->getRelated()->getKeyName());
        $stub->setForeignField($keyChain[2]);
        $stub->setMultiplicity(AssociationStubRelationType::ONE());
        $stub->setTargType(null);
        $stub->setMorphType($keyChain[1]);
        return $stub;
    }


    /**
     * @param  string              $name
     * @param  Relation            $relation
     * @param  string              $cacheKey
     * @return AssociationStubMonomorphic
     */
    protected static function handleBelongsToMany(string $name, Relation $relation, $cacheKey = 'BelongsToMany'): AssociationStubMonomorphic
    {
        $stub = new AssociationStubMonomorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setMultiplicity(AssociationStubRelationType::MANY());
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[3]);
        return $stub;
    }
    /**
     * @param  string              $name
     * @param  Relation            $relation
     * @param  string              $cacheKey
     * @return AssociationStubMonomorphic
     */
    protected static function handleHasManyThrough(string $name, Relation $relation, $cacheKey = 'HasManyThrough'):AssociationStubMonomorphic
    {
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub = new AssociationStubMonomorphic();
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setMultiplicity(AssociationStubRelationType::MANY());
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[3]);
        return $stub;
    }

    /**
     * @param  string              $name
     * @param  Relation            $relation
     * @param  string              $cacheKey
     * @return AssociationStubPolymorphic
     */
    protected static function handleMorphToMany(string $name, Relation $relation, $cacheKey = 'MorphToMany'): AssociationStubBase
    {
        //return self::handleBelongsToMany($name,$relation);
        //TODO: investigate if this could be treated as a BelongsToMany Or more importantly a Monomorphic as we know both sides
        $inverse = self::getKeyChain($relation, "inverse")[0];
        $stub = new AssociationStubPolymorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[3]);
        $stub->setForeignField($inverse ? null : $keyChain[1]);
        $stub->setMultiplicity(AssociationStubRelationType::MANY());
        $stub->setMorphType($keyChain[2]);
        $stub->setTargType($inverse ? null : get_class($relation->getRelated()));
        return $stub;
    }

    /**
     * @param string $name
     * @param Relation $relation
     * @param string $cacheKey
     * @return AssociationStubMonomorphic
     */
    protected static function handleHasOne(string $name, Relation $relation, $cacheKey = 'HasOneOrMany'): AssociationStubMonomorphic
    {
        $stub = new AssociationStubMonomorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[1]);
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setMultiplicity(AssociationStubRelationType::NULL_ONE());
        return $stub;
    }

    /**
     * @param string $name
     * @param Relation $relation
     * @param string $cacheKey
     * @return AssociationStubMonomorphic
     */
    protected static function handleHasMany(string $name, Relation $relation, $cacheKey = 'HasOneOrMany'): AssociationStubMonomorphic
    {
        $stub = new AssociationStubMonomorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[1]);
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setMultiplicity(AssociationStubRelationType::MANY());
        return $stub;
    }

    /**
     * @param  string                     $name
     * @param  Relation                   $relation
     * @param  string                     $cacheKey
     * @return AssociationStubPolymorphic
     */
    protected static function handleMorphOne(string $name, Relation $relation, $cacheKey = 'MorphOneOrMany'):AssociationStubPolymorphic
    {
        $stub = new AssociationStubPolymorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[0]);
        $stub->setForeignField($keyChain[2]);
        $stub->setTargType(get_class($relation->getRelated()));
        $stub->setMorphType($keyChain[1]);
        $stub->setMultiplicity(AssociationStubRelationType::NULL_ONE());
        return $stub;
    }


    /**
     * @param  string                     $name
     * @param  Relation                  $relation
     * @param  string                     $cacheKey
     * @return AssociationStubPolymorphic
     */
    protected static function handleMorphMany(string $name, Relation $relation, $cacheKey = 'MorphOneOrMany'): AssociationStubPolymorphic
    {
        $stub = new AssociationStubPolymorphic();
        $keyChain = self::getKeyChain($relation, $cacheKey);
        $stub->setRelationName($name);
        $stub->setThroughFieldChain($keyChain);
        $stub->setKeyField($keyChain[0]);
        $stub->setMorphType($keyChain[1]);
        $stub->setForeignField($keyChain[2]);
        $stub->setMultiplicity(AssociationStubRelationType::MANY());
        $stub->setTargType(get_class($relation->getRelated()));
        return $stub;
    }

    /**
     * @param Relation $relation
     * @param string $cacheKey
     * @return array
     */
    private static function getKeyChain(Relation $relation, string $cacheKey) : array
    {
        $fields = self::$fieldOrderCache[$cacheKey];
        $getter =  function () use ($fields) {
            $carry = [];
            foreach ($fields as $item) {
                $v = $this->{$item};

                if ($v == null && $item == 'ownerKey') {
                    $carry[] = null;
                    continue;
                }
                //TODO: investigate if this is needed can we use quailifed keys?
                $segments = explode('.', strval($this->{$item}));
                $carry[] = end($segments);
            }
            return $carry;
        };
        return call_user_func($getter->bindTo($relation, Relation::class));
    }

    private static $fieldOrderCache = [
        'BelongsTo' => ['foreignKey', 'ownerKey'],
        'BelongsToMany' => ['parentKey','foreignPivotKey','relatedPivotKey','relatedKey'],
        'HasOneOrMany' => ['localKey', 'foreignKey' ],
        'HasManyThrough' => ['localKey', 'firstKey', 'secondLocalKey', 'secondKey'],
        'MorphToMany' => ['parentKey','foreignPivotKey','morphType', 'relatedPivotKey','relatedKey'],
        'MorphTo' => ['foreignKey', 'morphType', 'ownerKey'],
        'MorphOneOrMany' => ['foreignKey', 'morphType', 'localKey' ],
        'inverse' => ['inverse'], // TODO: currently used to get inverse, should be removed when morephtomany is fixed

    ];
}


1			<?php
2			declare(strict_types=1);
3
4			namespace AlgoWeb\PODataLaravel\Models\ObjectMap\Entities\Associations;
5
6			use Illuminate\Database\Eloquent\Model;
7			use Illuminate\Database\Eloquent\Relations\BelongsTo;
8			use Illuminate\Database\Eloquent\Relations\BelongsToMany;
9			use Illuminate\Database\Eloquent\Relations\HasMany;
10			use Illuminate\Database\Eloquent\Relations\HasManyThrough;
11			use Illuminate\Database\Eloquent\Relations\HasOne;
12			use Illuminate\Database\Eloquent\Relations\MorphMany;
13			use Illuminate\Database\Eloquent\Relations\MorphOne;
14			use Illuminate\Database\Eloquent\Relations\MorphTo;
15			use Illuminate\Database\Eloquent\Relations\MorphToMany;
16			use Illuminate\Database\Eloquent\Relations\Relation;
17			use POData\Common\InvalidOperationException;
18
19			abstract class AssociationStubFactory
20			{
21			/**
22			* @param Model $parent
23			* @param string $name
24			* @param Relation $relation
25			* @return AssociationStubBase
26			* @throws InvalidOperationException
27			*/
28			public static function associationStubFromRelation(Model $parent, string $name): AssociationStubBase
29			{
30			$relation = $parent->{$name}();
31			$handler = self::getHandlerMethod($relation);
32			/**
33			* @var AssociationStubBase $stub
34			*/
35			$stub = self::{'handle' . $handler}($name, $relation);
36			$stub->setBaseType(get_class($parent));
37			if (!$stub->isOk()) {
38			throw new InvalidOperationException('Generated stub not consistent');
39			}
40			return $stub;
41			}
42
43			private static function getHandlerMethod(Relation $relation):string
44			{
45			$methods = [];
46			$methods[$relation instanceof BelongsTo] = 'BelongsTo'; //DONE
47			$methods[$relation instanceof MorphTo] = 'MorphTo'; //DONE
48			$methods[$relation instanceof BelongsToMany] = 'BelongsToMany'; //DONE
49			$methods[$relation instanceof MorphToMany] = 'MorphToMany'; // DONE
50			$methods[$relation instanceof HasOne] = 'HasOne';
51			$methods[$relation instanceof HasMany] = 'HasMany';
52			$methods[$relation instanceof HasManyThrough] = 'HasManyThrough'; //DONE
53			$methods[$relation instanceof MorphMany] = 'MorphMany';
54			$methods[$relation instanceof MorphOne] = 'MorphOne';
55
56			return $methods[true];
57			}
58
59			/**
60			* @param string $name
61			* @param Relation $relation
62			* @param string $cacheKey
63			* @return AssociationStubMonomorphic
64			*/
65			protected static function handleBelongsTo(string $name, Relation $relation, $cacheKey = 'BelongsTo'): AssociationStubMonomorphic
66			{
67			$stub = new AssociationStubMonomorphic();
68			$keyChain = self::getKeyChain($relation, $cacheKey);
69			$stub->setRelationName($name);
70			$stub->setThroughFieldChain($keyChain);
71			$stub->setKeyField($keyChain[0]);
72			$stub->setForeignField($keyChain[1]);
73			$stub->setTargType(get_class($relation->getRelated()));
74			$stub->setMultiplicity(AssociationStubRelationType::ONE());
75			return $stub;
76			}
77
78			/**
79			* @param string $name
80			* @param Relation $relation
81			* @param string $cacheKey
82			* @return AssociationStubPolymorphic
83			*/
84			protected static function handleMorphTo(string $name, Relation $relation, $cacheKey = 'MorphTo') : AssociationStubPolymorphic
85			{
86			$stub = new AssociationStubPolymorphic();
87			$keyChain = self::getKeyChain($relation, $cacheKey);
88			$stub->setRelationName($name);
89			$stub->setThroughFieldChain($keyChain);
90			$stub->setKeyField($keyChain[2] ?: $relation->getRelated()->getKeyName());
91			$stub->setForeignField($keyChain[2]);
92			$stub->setMultiplicity(AssociationStubRelationType::ONE());
93			$stub->setTargType(null);
94			$stub->setMorphType($keyChain[1]);
95			return $stub;
96			}
97
98
99			/**
100			* @param string $name
101			* @param Relation $relation
102			* @param string $cacheKey
103			* @return AssociationStubMonomorphic
104			*/
105			protected static function handleBelongsToMany(string $name, Relation $relation, $cacheKey = 'BelongsToMany'): AssociationStubMonomorphic
106			{
107			$stub = new AssociationStubMonomorphic();
108			$keyChain = self::getKeyChain($relation, $cacheKey);
109			$stub->setRelationName($name);
110			$stub->setThroughFieldChain($keyChain);
111			$stub->setMultiplicity(AssociationStubRelationType::MANY());
112			$stub->setTargType(get_class($relation->getRelated()));
113			$stub->setKeyField($keyChain[0]);
114			$stub->setForeignField($keyChain[3]);
115			return $stub;
116			}
117			/**
118			* @param string $name
119			* @param Relation $relation
120			* @param string $cacheKey
121			* @return AssociationStubMonomorphic
122			*/
123			protected static function handleHasManyThrough(string $name, Relation $relation, $cacheKey = 'HasManyThrough'):AssociationStubMonomorphic
124			{
125			$keyChain = self::getKeyChain($relation, $cacheKey);
126			$stub = new AssociationStubMonomorphic();
127			$stub->setRelationName($name);
128			$stub->setThroughFieldChain($keyChain);
129			$stub->setMultiplicity(AssociationStubRelationType::MANY());
130			$stub->setTargType(get_class($relation->getRelated()));
131			$stub->setKeyField($keyChain[0]);
132			$stub->setForeignField($keyChain[3]);
133			return $stub;
134			}
135
136			/**
137			* @param string $name
138			* @param Relation $relation
139			* @param string $cacheKey
140			* @return AssociationStubPolymorphic
141			*/
142			protected static function handleMorphToMany(string $name, Relation $relation, $cacheKey = 'MorphToMany'): AssociationStubBase
143			{
144			//return self::handleBelongsToMany($name,$relation);
145			//TODO: investigate if this could be treated as a BelongsToMany Or more importantly a Monomorphic as we know both sides
146			$inverse = self::getKeyChain($relation, "inverse")[0];
147			$stub = new AssociationStubPolymorphic();
148			$keyChain = self::getKeyChain($relation, $cacheKey);
149			$stub->setRelationName($name);
150			$stub->setThroughFieldChain($keyChain);
151			$stub->setKeyField($keyChain[3]);
152			$stub->setForeignField($inverse ? null : $keyChain[1]);
153			$stub->setMultiplicity(AssociationStubRelationType::MANY());
154			$stub->setMorphType($keyChain[2]);
155			$stub->setTargType($inverse ? null : get_class($relation->getRelated()));
156			return $stub;
157			}
158
159			/**
160			* @param string $name
161			* @param Relation $relation
162			* @param string $cacheKey
163			* @return AssociationStubMonomorphic
164			*/
165			protected static function handleHasOne(string $name, Relation $relation, $cacheKey = 'HasOneOrMany'): AssociationStubMonomorphic
166			{
167			$stub = new AssociationStubMonomorphic();
168			$keyChain = self::getKeyChain($relation, $cacheKey);
169			$stub->setRelationName($name);
170			$stub->setThroughFieldChain($keyChain);
171			$stub->setKeyField($keyChain[0]);
172			$stub->setForeignField($keyChain[1]);
173			$stub->setTargType(get_class($relation->getRelated()));
174			$stub->setMultiplicity(AssociationStubRelationType::NULL_ONE());
175			return $stub;
176			}
177
178			/**
179			* @param string $name
180			* @param Relation $relation
181			* @param string $cacheKey
182			* @return AssociationStubMonomorphic
183			*/
184			protected static function handleHasMany(string $name, Relation $relation, $cacheKey = 'HasOneOrMany'): AssociationStubMonomorphic
185			{
186			$stub = new AssociationStubMonomorphic();
187			$keyChain = self::getKeyChain($relation, $cacheKey);
188			$stub->setRelationName($name);
189			$stub->setThroughFieldChain($keyChain);
190			$stub->setKeyField($keyChain[0]);
191			$stub->setForeignField($keyChain[1]);
192			$stub->setTargType(get_class($relation->getRelated()));
193			$stub->setMultiplicity(AssociationStubRelationType::MANY());
194			return $stub;
195			}
196
197			/**
198			* @param string $name
199			* @param Relation $relation
200			* @param string $cacheKey
201			* @return AssociationStubPolymorphic
202			*/
203			protected static function handleMorphOne(string $name, Relation $relation, $cacheKey = 'MorphOneOrMany'):AssociationStubPolymorphic
204			{
205			$stub = new AssociationStubPolymorphic();
206			$keyChain = self::getKeyChain($relation, $cacheKey);
207			$stub->setRelationName($name);
208			$stub->setThroughFieldChain($keyChain);
209			$stub->setKeyField($keyChain[0]);
210			$stub->setForeignField($keyChain[2]);
211			$stub->setTargType(get_class($relation->getRelated()));
212			$stub->setMorphType($keyChain[1]);
213			$stub->setMultiplicity(AssociationStubRelationType::NULL_ONE());
214			return $stub;
215			}
216
217
218			/**
219			* @param string $name
220			* @param Relation $relation
221			* @param string $cacheKey
222			* @return AssociationStubPolymorphic
223			*/
224			protected static function handleMorphMany(string $name, Relation $relation, $cacheKey = 'MorphOneOrMany'): AssociationStubPolymorphic
225			{
226			$stub = new AssociationStubPolymorphic();
227			$keyChain = self::getKeyChain($relation, $cacheKey);
228			$stub->setRelationName($name);
229			$stub->setThroughFieldChain($keyChain);
230			$stub->setKeyField($keyChain[0]);
231			$stub->setMorphType($keyChain[1]);
232			$stub->setForeignField($keyChain[2]);
233			$stub->setMultiplicity(AssociationStubRelationType::MANY());
234			$stub->setTargType(get_class($relation->getRelated()));
235			return $stub;
236			}
237
238			/**
239			* @param Relation $relation
240			* @param string $cacheKey
241			* @return array
242			*/
243			private static function getKeyChain(Relation $relation, string $cacheKey) : array
244			{
245			$fields = self::$fieldOrderCache[$cacheKey];
246			$getter = function () use ($fields) {
247			$carry = [];
248			foreach ($fields as $item) {
249			$v = $this->{$item};
			1 ignored issue – show Comprehensibility Best Practice introduced 2020-02-25 12:31 UTC by Report Bug Copy Issue Report The variable `$this` seems to be never defined. Loading history...
250			if ($v == null && $item == 'ownerKey') {
251			$carry[] = null;
252			continue;
253			}
254			//TODO: investigate if this is needed can we use quailifed keys?
255			$segments = explode('.', strval($this->{$item}));
256			$carry[] = end($segments);
257			}
258			return $carry;
259			};
260			return call_user_func($getter->bindTo($relation, Relation::class));
261			}
262
263			private static $fieldOrderCache = [
264			'BelongsTo' => ['foreignKey', 'ownerKey'],
265			'BelongsToMany' => ['parentKey','foreignPivotKey','relatedPivotKey','relatedKey'],
266			'HasOneOrMany' => ['localKey', 'foreignKey' ],
267			'HasManyThrough' => ['localKey', 'firstKey', 'secondLocalKey', 'secondKey'],
268			'MorphToMany' => ['parentKey','foreignPivotKey','morphType', 'relatedPivotKey','relatedKey'],
269			'MorphTo' => ['foreignKey', 'morphType', 'ownerKey'],
270			'MorphOneOrMany' => ['foreignKey', 'morphType', 'localKey' ],
271			'inverse' => ['inverse'], // TODO: currently used to get inverse, should be removed when morephtomany is fixed
272
273			];
274			}
275

Algo-Web / POData-Laravel

Pull Request — master (#221)

AssociationStubFactory::getHandlerMethod() A

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