MetadataRelationsTrait::isUnknownPolymorphSide() - Code Metrics - Inspection of "WIP: Metadata relation clean" - Algo-Web/POData-Laravel - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#219)

by Christopher

created 2020-02-24 14:36 UTC

MetadataRelationsTrait::isUnknownPolymorphSide() A

↳ Parent: MetadataRelationsTrait

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	2
c	1
b	0
f	0
dl	0
loc	6
rs	10
cc	1
nc	1
nop	0

<?php
/**
 * Created by PhpStorm.
 * User: alex
 * Date: 13/02/20
 * Time: 1:08 PM.
 */
namespace AlgoWeb\PODataLaravel\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\MorphMany;
use Illuminate\Database\Eloquent\Relations\MorphOne;
use Illuminate\Database\Eloquent\Relations\MorphToMany;
use Illuminate\Database\Eloquent\Relations\Relation;
use POData\Common\InvalidOperationException;

trait MetadataRelationsTrait
{
    use MetadataKeyMethodNamesTrait;

    protected static $relationHooks = [];
    protected static $relationCategories = [];


    /**
     * Get model's relationships.
     *
     * @throws InvalidOperationException
     * @throws \ReflectionException
     * @return array
     */
    public function getRelationships()
    {
        if (empty(static::$relationHooks)) {
            $hooks = [];

            $rels = $this->getRelationshipsFromMethods(true);

            $this->getRelationshipsUnknownPolyMorph($rels, $hooks);

            $this->getRelationshipsKnownPolyMorph($rels, $hooks);

            $this->getRelationshipsHasOne($rels, $hooks);

            $this->getRelationshipsHasMany($rels, $hooks);

            static::$relationHooks = $hooks;
        }

        return static::$relationHooks;
    }

    /**
     * Is this model the known side of at least one polymorphic relation?
     *
     * @throws InvalidOperationException
     * @throws \ReflectionException
     */
    public function isKnownPolymorphSide()
    {
        // isKnownPolymorph needs to be checking KnownPolymorphSide results - if you're checking UnknownPolymorphSide,
        // you're turned around
        $rels = $this->getRelationshipsFromMethods();
        return !empty($rels['KnownPolyMorphSide']);
    }

    /**
     * Is this model on the unknown side of at least one polymorphic relation?
     *
     * @throws InvalidOperationException
     * @throws \ReflectionException
     */
    public function isUnknownPolymorphSide()
    {
        // isUnknownPolymorph needs to be checking UnknownPolymorphSide results - if you're checking KnownPolymorphSide,
        // you're turned around
        $rels = $this->getRelationshipsFromMethods();
        return !empty($rels['UnknownPolyMorphSide']);
    }

    /**
     * @param bool $biDir
     *
     * @throws InvalidOperationException
     * @throws \ReflectionException
     * @return array
     */
    protected function getRelationshipsFromMethods(bool $biDir = false)
    {
        $biDirVal = intval($biDir);
        $isCached = isset(static::$relationCategories[$biDirVal]) && !empty(static::$relationCategories[$biDirVal]);
        if (!$isCached) {
            /** @var Model $model */
            $model = $this;
            $relationships = [
                'HasOne' => [],
                'UnknownPolyMorphSide' => [],
                'HasMany' => [],
                'KnownPolyMorphSide' => []
            ];
            $methods = $this->getModelClassMethods($model);
            foreach ($methods as $method) {
                //Use reflection to inspect the code, based on Illuminate/Support/SerializableClosure.php
                $reflection = new \ReflectionMethod($model, $method);
                $fileName = $reflection->getFileName();

                $file = new \SplFileObject($fileName);
                $file->seek($reflection->getStartLine()-1);
                $code = '';
                while ($file->key() < $reflection->getEndLine()) {
                    $code .= $file->current();
                    $file->next();
                }

                $code = trim(preg_replace('/\s\s+/', '', $code));
                if (false === stripos($code, 'function')) {
                    $msg = 'Function definition must have keyword \'function\'';
                    throw new InvalidOperationException($msg);
                }
                $begin = strpos($code, 'function(');
                $code = substr($code, /* @scrutinizer ignore-type */$begin, strrpos($code, '}')-$begin+1);
                $lastCode = $code[strlen(/* @scrutinizer ignore-type */$code)-1];
                if ('}' != $lastCode) {
                    $msg = 'Final character of function definition must be closing brace';
                    throw new InvalidOperationException($msg);
                }
                foreach (static::$relTypes as $relation) {
                    $search = '$this->' . $relation . '(';
                    $found = stripos(/* @scrutinizer ignore-type */$code, $search);
                    if (!$found) {
                        continue;
                    }
                    //Resolve the relation's model to a Relation object.
                    $relationObj = $model->$method();
                    if (!($relationObj instanceof Relation)) {
                        continue;
                    }
                    $relObject = $relationObj->getRelated();
                    $relatedModel = '\\' . get_class($relObject);
                    if (!in_array(MetadataTrait::class, class_uses($relatedModel))) {
                        continue;
                    }
                    $targObject = $biDir ? $relationObj : $relatedModel;
                    if (in_array($relation, static::$manyRelTypes)) {
                        //Collection or array of models (because Collection is Arrayable)
                        $relationships['HasMany'][$method] = $targObject;
                    } elseif ('morphTo' === $relation) {
                        // Model isn't specified because relation is polymorphic
                        $relationships['UnknownPolyMorphSide'][$method] =
                            $biDir ? $relationObj : '\Illuminate\Database\Eloquent\Model|\Eloquent';
                    } else {
                        //Single model is returned
                        $relationships['HasOne'][$method] = $targObject;
                    }
                    if (in_array($relation, ['morphMany', 'morphOne', 'morphToMany'])) {
                        $relationships['KnownPolyMorphSide'][$method] = $targObject;
                    }
                    if (in_array($relation, ['morphedByMany'])) {
                        $relationships['UnknownPolyMorphSide'][$method] = $targObject;
                    }
                }
            }
            static::$relationCategories[$biDirVal] = $relationships;
        }
        return static::$relationCategories[$biDirVal];
    }

    /**
     * @param  array                     $rels
     * @param  array                     $hooks
     * @throws InvalidOperationException
     */
    protected function getRelationshipsHasMany(array $rels, array &$hooks)
    {
        /**
         * @var string   $property
         * @var Relation $relation
         */
        foreach ($rels['HasMany'] as $property => $relation) {
            if ($relation instanceof MorphMany || $relation instanceof MorphToMany) {
                continue;
            }
            $mult = '*';
            $targ = get_class($relation->getRelated());
            $keyName = $this->polyglotFkKey($relation);
            $localName = $this->polyglotRkKey($relation);
            $thruName = $this->polyglotThroughKey($relation);

            $first = $keyName;
            $last = $localName;
            $this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, null, $thruName);
        }
    }

    /**
     * @param  array                     $rels
     * @param  array                     $hooks
     * @throws InvalidOperationException
     */
    protected function getRelationshipsHasOne(array $rels, array &$hooks)
    {
        /**
         * @var string   $property
         * @var Relation $foo
         */
        foreach ($rels['HasOne'] as $property => $foo) {
            if ($foo instanceof MorphOne) {
                continue;
            }
            $isBelong = $foo instanceof BelongsTo;
            $mult = $isBelong ? '1' : '0..1';
            $targ = get_class($foo->getRelated());

            $keyName = $this->polyglotFkKey($foo);
            $localName = $this->polyglotRkKey($foo);
            $first = $isBelong ? $localName : $keyName;
            $last = $isBelong ? $keyName : $localName;
            $this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ);
        }
    }

    /**
     * @param  array                     $rels
     * @param  array                     $hooks
     * @throws InvalidOperationException
     */
    protected function getRelationshipsKnownPolyMorph(array $rels, array &$hooks)
    {
        /**
         * @var string   $property
         * @var Relation $foo
         */
        foreach ($rels['KnownPolyMorphSide'] as $property => $foo) {
            $isMany = $foo instanceof MorphToMany;
            $targ = get_class($foo->getRelated());
            $mult = $isMany ? '*' : ($foo instanceof MorphMany ? '*' : '1');
            $mult = $foo instanceof MorphOne ? '0..1' : $mult;

            $keyName = $this->polyglotFkKey($foo);
            $localName = $this->polyglotRkKey($foo);
            $first = $isMany ? $keyName : $localName;
            $last = $isMany ? $localName : $keyName;
            $this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, 'unknown');
        }
    }

    /**
     * @param  array                     $rels
     * @param  array                     $hooks
     * @throws InvalidOperationException
     */
    protected function getRelationshipsUnknownPolyMorph(array $rels, array &$hooks)
    {
        /**
         * @var string   $property
         * @var Relation $foo
         */
        foreach ($rels['UnknownPolyMorphSide'] as $property => $foo) {
            $isMany = $foo instanceof MorphToMany;
            $targ = get_class($foo->getRelated());
            $mult = $isMany ? '*' : '1';
            
            $keyName = $this->polyglotFkKey($foo);
            $localName = $this->polyglotRkKey($foo);

            $first = $keyName;
            $last = (isset($localName) && '' != $localName) ? $localName : $foo->getRelated()->getKeyName();
            $this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, 'known');
        }
    }

    /**
     * @param             $hooks
     * @param             $foreignField
     * @param             $RelationName
     * @param             $localKey
     * @param             $mult
     * @param string|null $relatedObject
     * @param mixed|null  $type
     * @param mixed|null  $through
     */
    protected function addRelationsHook(
        array &$hooks,
        $foreignField,
        $RelationName,
        $localKey,
        $mult,
        $relatedObject,
        $type = null,
        $through = null
    ) {
        if (!isset($hooks[$foreignField])) {
            $hooks[$foreignField] = [];
        }
        if (!isset($hooks[$foreignField][$relatedObject])) {
            $hooks[$foreignField][$relatedObject] = [];
        }
        $hooks[$foreignField][$relatedObject][$RelationName] = [
            'property' => $RelationName,
            'local' => $localKey,
            'through' => $through,
            'multiplicity' => $mult,
            'type' => $type
        ];
    }
}


1			<?php
2			/**
3			* Created by PhpStorm.
4			* User: alex
5			* Date: 13/02/20
6			* Time: 1:08 PM.
7			*/
8			namespace AlgoWeb\PODataLaravel\Models;
9
10			use Illuminate\Database\Eloquent\Model;
11			use Illuminate\Database\Eloquent\Relations\BelongsTo;
12			use Illuminate\Database\Eloquent\Relations\MorphMany;
13			use Illuminate\Database\Eloquent\Relations\MorphOne;
14			use Illuminate\Database\Eloquent\Relations\MorphToMany;
15			use Illuminate\Database\Eloquent\Relations\Relation;
16			use POData\Common\InvalidOperationException;
17
18			trait MetadataRelationsTrait
19			{
20			use MetadataKeyMethodNamesTrait;
21
22			protected static $relationHooks = [];
23			protected static $relationCategories = [];
24
25
26			/**
27			* Get model's relationships.
28			*
29			* @throws InvalidOperationException
30			* @throws \ReflectionException
31			* @return array
32			*/
33			public function getRelationships()
34			{
35			if (empty(static::$relationHooks)) {
36			$hooks = [];
37
38			$rels = $this->getRelationshipsFromMethods(true);
39
40			$this->getRelationshipsUnknownPolyMorph($rels, $hooks);
41
42			$this->getRelationshipsKnownPolyMorph($rels, $hooks);
43
44			$this->getRelationshipsHasOne($rels, $hooks);
45
46			$this->getRelationshipsHasMany($rels, $hooks);
47
48			static::$relationHooks = $hooks;
49			}
50
51			return static::$relationHooks;
52			}
53
54			/**
55			* Is this model the known side of at least one polymorphic relation?
56			*
57			* @throws InvalidOperationException
58			* @throws \ReflectionException
59			*/
60			public function isKnownPolymorphSide()
61			{
62			// isKnownPolymorph needs to be checking KnownPolymorphSide results - if you're checking UnknownPolymorphSide,
63			// you're turned around
64			$rels = $this->getRelationshipsFromMethods();
65			return !empty($rels['KnownPolyMorphSide']);
66			}
67
68			/**
69			* Is this model on the unknown side of at least one polymorphic relation?
70			*
71			* @throws InvalidOperationException
72			* @throws \ReflectionException
73			*/
74			public function isUnknownPolymorphSide()
75			{
76			// isUnknownPolymorph needs to be checking UnknownPolymorphSide results - if you're checking KnownPolymorphSide,
77			// you're turned around
78			$rels = $this->getRelationshipsFromMethods();
79			return !empty($rels['UnknownPolyMorphSide']);
80			}
81
82			/**
83			* @param bool $biDir
84			*
85			* @throws InvalidOperationException
86			* @throws \ReflectionException
87			* @return array
88			*/
89			protected function getRelationshipsFromMethods(bool $biDir = false)
90			{
91			$biDirVal = intval($biDir);
92			$isCached = isset(static::$relationCategories[$biDirVal]) && !empty(static::$relationCategories[$biDirVal]);
93			if (!$isCached) {
94			/** @var Model $model */
95			$model = $this;
96			$relationships = [
97			'HasOne' => [],
98			'UnknownPolyMorphSide' => [],
99			'HasMany' => [],
100			'KnownPolyMorphSide' => []
101			];
102			$methods = $this->getModelClassMethods($model);
103			foreach ($methods as $method) {
104			//Use reflection to inspect the code, based on Illuminate/Support/SerializableClosure.php
105			$reflection = new \ReflectionMethod($model, $method);
106			$fileName = $reflection->getFileName();
107
108			$file = new \SplFileObject($fileName);
109			$file->seek($reflection->getStartLine()-1);
110			$code = '';
111			while ($file->key() < $reflection->getEndLine()) {
112			$code .= $file->current();
113			$file->next();
114			}
115
116			$code = trim(preg_replace('/\s\s+/', '', $code));
117			if (false === stripos($code, 'function')) {
118			$msg = 'Function definition must have keyword \'function\'';
119			throw new InvalidOperationException($msg);
120			}
121			$begin = strpos($code, 'function(');
122			$code = substr($code, /* @scrutinizer ignore-type */$begin, strrpos($code, '}')-$begin+1);
123			$lastCode = $code[strlen(/* @scrutinizer ignore-type */$code)-1];
124			if ('}' != $lastCode) {
125			$msg = 'Final character of function definition must be closing brace';
126			throw new InvalidOperationException($msg);
127			}
128			foreach (static::$relTypes as $relation) {
129			$search = '$this->' . $relation . '(';
130			$found = stripos(/* @scrutinizer ignore-type */$code, $search);
131			if (!$found) {
132			continue;
133			}
134			//Resolve the relation's model to a Relation object.
135			$relationObj = $model->$method();
136			if (!($relationObj instanceof Relation)) {
137			continue;
138			}
139			$relObject = $relationObj->getRelated();
140			$relatedModel = '\\' . get_class($relObject);
141			if (!in_array(MetadataTrait::class, class_uses($relatedModel))) {
142			continue;
143			}
144			$targObject = $biDir ? $relationObj : $relatedModel;
145			if (in_array($relation, static::$manyRelTypes)) {
146			//Collection or array of models (because Collection is Arrayable)
147			$relationships['HasMany'][$method] = $targObject;
148			} elseif ('morphTo' === $relation) {
149			// Model isn't specified because relation is polymorphic
150			$relationships['UnknownPolyMorphSide'][$method] =
151			$biDir ? $relationObj : '\Illuminate\Database\Eloquent\Model\|\Eloquent';
152			} else {
153			//Single model is returned
154			$relationships['HasOne'][$method] = $targObject;
155			}
156			if (in_array($relation, ['morphMany', 'morphOne', 'morphToMany'])) {
157			$relationships['KnownPolyMorphSide'][$method] = $targObject;
158			}
159			if (in_array($relation, ['morphedByMany'])) {
160			$relationships['UnknownPolyMorphSide'][$method] = $targObject;
161			}
162			}
163			}
164			static::$relationCategories[$biDirVal] = $relationships;
165			}
166			return static::$relationCategories[$biDirVal];
167			}
168
169			/**
170			* @param array $rels
171			* @param array $hooks
172			* @throws InvalidOperationException
173			*/
174			protected function getRelationshipsHasMany(array $rels, array &$hooks)
175			{
176			/**
177			* @var string $property
178			* @var Relation $relation
179			*/
180			foreach ($rels['HasMany'] as $property => $relation) {
181			if ($relation instanceof MorphMany \|\| $relation instanceof MorphToMany) {
182			continue;
183			}
184			$mult = '*';
185			$targ = get_class($relation->getRelated());
186			$keyName = $this->polyglotFkKey($relation);
187			$localName = $this->polyglotRkKey($relation);
188			$thruName = $this->polyglotThroughKey($relation);
189
190			$first = $keyName;
191			$last = $localName;
192			$this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, null, $thruName);
193			}
194			}
195
196			/**
197			* @param array $rels
198			* @param array $hooks
199			* @throws InvalidOperationException
200			*/
201			protected function getRelationshipsHasOne(array $rels, array &$hooks)
202			{
203			/**
204			* @var string $property
205			* @var Relation $foo
206			*/
207			foreach ($rels['HasOne'] as $property => $foo) {
208			if ($foo instanceof MorphOne) {
209			continue;
210			}
211			$isBelong = $foo instanceof BelongsTo;
212			$mult = $isBelong ? '1' : '0..1';
213			$targ = get_class($foo->getRelated());
214
215			$keyName = $this->polyglotFkKey($foo);
216			$localName = $this->polyglotRkKey($foo);
217			$first = $isBelong ? $localName : $keyName;
218			$last = $isBelong ? $keyName : $localName;
219			$this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ);
220			}
221			}
222
223			/**
224			* @param array $rels
225			* @param array $hooks
226			* @throws InvalidOperationException
227			*/
228			protected function getRelationshipsKnownPolyMorph(array $rels, array &$hooks)
229			{
230			/**
231			* @var string $property
232			* @var Relation $foo
233			*/
234			foreach ($rels['KnownPolyMorphSide'] as $property => $foo) {
235			$isMany = $foo instanceof MorphToMany;
236			$targ = get_class($foo->getRelated());
237			$mult = $isMany ? '' : ($foo instanceof MorphMany ? '' : '1');
238			$mult = $foo instanceof MorphOne ? '0..1' : $mult;
239
240			$keyName = $this->polyglotFkKey($foo);
241			$localName = $this->polyglotRkKey($foo);
242			$first = $isMany ? $keyName : $localName;
243			$last = $isMany ? $localName : $keyName;
244			$this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, 'unknown');
245			}
246			}
247
248			/**
249			* @param array $rels
250			* @param array $hooks
251			* @throws InvalidOperationException
252			*/
253			protected function getRelationshipsUnknownPolyMorph(array $rels, array &$hooks)
254			{
255			/**
256			* @var string $property
257			* @var Relation $foo
258			*/
259			foreach ($rels['UnknownPolyMorphSide'] as $property => $foo) {
260			$isMany = $foo instanceof MorphToMany;
261			$targ = get_class($foo->getRelated());
262			$mult = $isMany ? '*' : '1';
263
264			$keyName = $this->polyglotFkKey($foo);
265			$localName = $this->polyglotRkKey($foo);
266
267			$first = $keyName;
268			$last = (isset($localName) && '' != $localName) ? $localName : $foo->getRelated()->getKeyName();
269			$this->addRelationsHook($hooks, $first, $property, $last, $mult, $targ, 'known');
270			}
271			}
272
273			/**
274			* @param $hooks
275			* @param $foreignField
276			* @param $RelationName
277			* @param $localKey
278			* @param $mult
279			* @param string\|null $relatedObject
280			* @param mixed\|null $type
281			* @param mixed\|null $through
282			*/
283			protected function addRelationsHook(
284			array &$hooks,
285			$foreignField,
286			$RelationName,
287			$localKey,
288			$mult,
289			$relatedObject,
290			$type = null,
291			$through = null
292			) {
293			if (!isset($hooks[$foreignField])) {
294			$hooks[$foreignField] = [];
295			}
296			if (!isset($hooks[$foreignField][$relatedObject])) {
297			$hooks[$foreignField][$relatedObject] = [];
298			}
299			$hooks[$foreignField][$relatedObject][$RelationName] = [
300			'property' => $RelationName,
301			'local' => $localKey,
302			'through' => $through,
303			'multiplicity' => $mult,
304			'type' => $type
305			];
306			}
307			}
308

Algo-Web / POData-Laravel

Pull Request — master (#219)

MetadataRelationsTrait::isUnknownPolymorphSide() A

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