JsonApiController - Code Metrics - Inspection of "Add method to transform collections of resource id..." - huntie/laravel-simple-jsonapi - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — relationships ( 489f2c...b6e256 )

by Alex

created 2016-05-08 12:34 UTC

JsonApiController B

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	358
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	6

Importance

Changes	11
Bugs	0	Features	9

Metric	Value
wmc	44
c	11
b	0
f	9
lcom	1
cbo	6
dl	0
loc	358
rs	8.3396

17 Methods

Rating	Name	Size	Complexity
	getModel()	1	?
A	getModelType()	4	1
A	getModelRelationships()	4	1
C	indexAction()	32	7
A	storeAction()	10	2
A	showAction()	7	2
A	updateAction()	11	3
A	destroyAction()	7	2
A	updateToOneRelationshipAction()	13	4
C	updateToManyRelationshipAction()	27	7
A	findModelInstance()	4	1
A	getRequestParameters()	9	1
A	getRequestQuerySet()	4	1
B	transformRecord()	41	5
A	transformCollection()	8	1
A	transformCollectionIds()	11	1
B	updateRecordRelationships()	15	5

How to fix Complexity

<?php

namespace Huntie\JsonApi\Http\Controllers;

use Huntie\JsonApi\Http\JsonApiResponse;
use Huntie\JsonApi\Support\JsonApiErrors;
use Illuminate\Database\QueryException;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Routing\Controller;

abstract class JsonApiController extends Controller
{
    use JsonApiErrors;

    /**
     * Return the Eloquent Model for the resource.
     *
     * @return Model
     */
    abstract protected function getModel();

    /**
     * Return the type name of the resource.
     *
     * @return string
     */
    protected function getModelType()
    {
        return $this->getModel()->getTable();
    }

    /**
     * The model relationships that can be updated.
     *
     * @return string
     */
    protected function getModelRelationships()
    {
        return [];
    }

    /**
     * Return a listing of the resource.
     *
     * @param Request $request
     *
     * @return JsonApiResponse
     */
    public function indexAction(Request $request)
    {
        $records = $this->getModel()->newQuery();
        $params = $this->getRequestParameters($request);

        foreach ($params['sort'] as $expression) {
            $direction = substr($expression, 0, 1) === '-' ? 'desc' : 'asc';
            $column = preg_replace('/^\-/', '', $expression);
            $records = $records->orderby($column, $direction);
        }

        foreach ($params['filter'] as $attribute => $value) {
            if (is_numeric($value)) {
                // Exact numeric match
                $records = $records->where($attribute, $value);
            } else if (in_array(strtolower($value), ['true', 'false'])) {
                // Boolean match
                $records = $records->where($attribute, filter_var($value, FILTER_VALIDATE_BOOLEAN));
            } else {
                // Partial string match
                $records = $records->where($attribute, 'like', "%$value%");
// Instead of
$x = "foo $bar $baz";

// Better use either
$x = "foo " . $bar . " " . $baz;
$x = sprintf("foo %s %s", $bar, $baz);
            }
        }

        try {
            $records = $records->get();
        } catch (QueryException $e) {
            return $this->error(Response::HTTP_BAD_REQUEST, 'Invalid query parameters');
        }

        return new JsonApiResponse($this->transformCollection($records, $params['fields']));
    }

    /**
     * Store a new record.
     *
     * @param Request $request
     *
     * @return JsonApiResponse
     */
    public function storeAction(Request $request)
    {
        $record = $this->getModel()->create((array) $request->input('data.attributes'));

        if ($relationships = $request->input('data.relationships')) {
            $this->updateRecordRelationships($record, (array) $relationships);
        }

        return new JsonApiResponse($this->transformRecord($record), Response::HTTP_CREATED);
    }

    /**
     * Return a specified record.
     *
     * @param Request   $request
     * @param Model|int $record
     *
     * @return JsonApiResponse
     */
    public function showAction(Request $request, $record)
    {
        $record = $record instanceof Model ? $record : $this->findModelInstance($record);
        $params = $this->getRequestParameters($request);

        return new JsonApiResponse($this->transformRecord($record, $params['fields'], $params['include']));
    }

    /**
     * Update a specified record.
     *
     * @param Request   $request
     * @param Model|int $record
     *
     * @return JsonApiResponse
     */
    public function updateAction(Request $request, $record)
    {
        $record = $record instanceof Model ? $record : $this->findModelInstance($record);
        $record->update((array) $request->input('data.attributes'));

        if ($relationships = $request->input('data.relationships')) {
            $this->updateRecordRelationships($record, (array) $relationships);
        }

        return $this->showAction($request, $record);
    }

    /**
     * Destroy a specified record.
     *
     * @param Request   $request
     * @param Model|int $record
     *
     * @return JsonApiResponse
     */
    public function destroyAction(Request $request, $record)

    {
        $record = $record instanceof Model ? $record : $this->findModelInstance($record);
        $record->delete();

        return new JsonApiResponse(null, Response::HTTP_NO_CONTENT);
    }

    /**
     * Update a named many-to-one relationship association on a specified record.
     * http://jsonapi.org/format/#crud-updating-to-one-relationships
     *
     * @param Request     $request
     * @param Model|int   $record
     * @param string      $relation
     * @param string|null $foreignKey
     *
     * @return JsonApiResponse
     */
    public function updateToOneRelationshipAction(Request $request, $record, $relation, $foreignKey = null)
    {
        if (!in_array($relation, $this->getModelRelationships())) {
            return $this->error(Reponse::HTTP_NOT_FOUND);

        }

        $record = $record instanceof Model ? $record : $this->findModelInstance($record);
        $data = (array) $request->input('data');

        $record->update([($foreignKey ?: $relation . '_id') => $data['id']]);

        return new JsonApiResponse();
    }

    /**
     * Update named many-to-many relationship entries on a specified record.
     * http://jsonapi.org/format/#crud-updating-to-many-relationships
     *
     * @param Request   $request
     * @param Model|int $record
     * @param string    $relation
     *
     * @return JsonApiResponse
     */
    public function updateToManyRelationshipAction(Request $request, $record, $relation)
    {
        if (!in_array($relation, $this->getModelRelationships())) {
            return $this->error(Reponse::HTTP_NOT_FOUND);

        }

        $record = $record instanceof Model ? $record : $this->findModelInstance($record);
        $relationships = (array) $request->input('data');
        $items = [];

        foreach ($relationships as $item) {
            $items[$item['id']] = $item['attributes'];
        }

        switch ($request->method()) {
            case 'PATCH':
                $record->{$relation}()->sync($items);
                break;
            case 'POST':
                $record->{$relation}()->sync($items, false);
                break;
            case 'DELETE':
                $record->{$relation}()->detach(array_keys($items));
        }

        return new JsonApiResponse();
    }

    /**
     * Return an instance of the resource by primary key.
     *
     * @param int $key
     *
     * @throws \Illuminate\Database\Eloquent\ModelNotFoundException
     *
     * @return Model
     */
    protected function findModelInstance($key)
    {
        return $this->getModel()->findOrFail($key);
    }

    /**
     * Return any JSON API resource parameters from a request.
     *
     * @param Request $request
     *
     * @return array
     */
    protected function getRequestParameters($request)
    {
        return [
            'fields' => $this->getRequestQuerySet($request, 'fields.' . $this->getModelType()),
            'include' => $this->getRequestQuerySet($request, 'include'),
            'sort' => $this->getRequestQuerySet($request, 'sort'),
            'filter' => (array) $request->input('filter'),
        ];
    }

    /**
     * Return any comma separated values in a request query field as an array.
     *
     * @param Request $request
     * @param string  $key
     *
     * @return array
     */
    protected function getRequestQuerySet($request, $key)
    {
        return preg_split('/,/', $request->input($key), null, PREG_SPLIT_NO_EMPTY);
    }

    /**
     * Transform a model instance into a JSON API object.
     *
     * @param Model      $record
     * @param array|null $fields  Field names of attributes to limit to
     * @param array|null $include Relations to include
     *
     * @return array
     */
    protected function transformRecord($record, array $fields = [], array $include = [])
    {
        $relations = array_unique(array_merge($record->getRelations(), $include));
        $attributes = $record->load($relations)->toArray();
        $relationships = [];
        $included = [];

        foreach ($relations as $relation) {
            $relationships[$relation] = [
                'data' => []
            ];

            foreach (array_pull($attributes, $relation) as $relatedRecord) {
                $relationships[$relation]['data'][] = [
                    'type' => $relation,
                    'id' => $relatedRecord['id'],
                ];

                if (in_array($relation, $include)) {
                    $included[] = [
                        'type' => $relation,
                        'id' => $relatedRecord['id'],
                        'attributes' => array_except($relatedRecord, ['id', 'pivot']),
                    ];
                }
            }
        }

        if (!empty($fields)) {
            $attributes = array_only($attributes, $fields);
        }

        $data = array_filter([
            'type' => $record->getTable(),
            'id' => $record->id,
            'attributes' => array_except($attributes, ['id']),
            'relationships' => $relationships,
        ]);

        return array_filter(compact('data', 'included'));
    }

    /**
     * Transform a set of models into a JSON API collection.
     *
     * @param \Illuminate\Support\Collection $records
     * @param array                          $fields
     *
     * @return array
     */
    protected function transformCollection($records, array $fields = [])

    {
        $data = $records->map(function ($record) {
            return $this->transformRecord($record, $fields)['data'];

        });

        return compact('data');
    }

    /**
     * Transform a set of models into a collection of JSON API resource
     * identifier objects.
     *
     * @param \Illuminate\Support\Collection $records
     *
     * @return array
     */
    protected function transformCollectionIds($records)
    {
        $data = $records->map(function ($record) {
            return [
                'type' => $record->getTable(),
                'id' => $record->id,
            ];
        });

        return compact('data');
    }

    /**
     * Update one or more relationships on a model instance.
     *
     * @param Model $record
     * @param array $relationships
     */
    protected function updateRecordRelationships($record, array $relationships)
    {
        foreach ($relationships as $name => $relationship) {
            if (in_array($name, $this->getModelRelationships())) {
                $relation = $this->getModelRelationships()[$name];
                $data = $relationship['data'];

                if ($relation instanceof BelongsTo) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
                    $record->update([$relation->getForeignKey() => $data['id']]);
                } else if ($relation instanceof BelongsToMany) {
if ($x instanceof DoesNotExist) {
    // Do something.
}
                    $record->{$name}()->sync(array_pluck($data, 'id'));
                }
            }
        }
    }
}


Push — relationships ( 489f2c...b6e256 )

JsonApiController B

Complexity

Size/Duplication

Coupling/Cohesion

Importance

17 Methods

How to fix Complexity

Complex Class

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

1			<?php
2
3			namespace Huntie\JsonApi\Http\Controllers;
4
5			use Huntie\JsonApi\Http\JsonApiResponse;
6			use Huntie\JsonApi\Support\JsonApiErrors;
7			use Illuminate\Database\QueryException;
8			use Illuminate\Database\Eloquent\Model;
9			use Illuminate\Http\Request;
10			use Illuminate\Http\Response;
11			use Illuminate\Routing\Controller;
12
13			abstract class JsonApiController extends Controller
14			{
15			use JsonApiErrors;
16
17			/**
18			* Return the Eloquent Model for the resource.
19			*
20			* @return Model
21			*/
22			abstract protected function getModel();
23
24			/**
25			* Return the type name of the resource.
26			*
27			* @return string
28			*/
29			protected function getModelType()
30			{
31			return $this->getModel()->getTable();
32			}
33
34			/**
35			* The model relationships that can be updated.
36			*
37			* @return string
38			*/
39			protected function getModelRelationships()
40			{
41			return [];
42			}
43
44			/**
45			* Return a listing of the resource.
46			*
47			* @param Request $request
48			*
49			* @return JsonApiResponse
50			*/
51			public function indexAction(Request $request)
52			{
53			$records = $this->getModel()->newQuery();
54			$params = $this->getRequestParameters($request);
55
56			foreach ($params['sort'] as $expression) {
57			$direction = substr($expression, 0, 1) === '-' ? 'desc' : 'asc';
58			$column = preg_replace('/^\-/', '', $expression);
59			$records = $records->orderby($column, $direction);
60			}
61
62			foreach ($params['filter'] as $attribute => $value) {
63			if (is_numeric($value)) {
64			// Exact numeric match
65			$records = $records->where($attribute, $value);
66			} else if (in_array(strtolower($value), ['true', 'false'])) {
67			// Boolean match
68			$records = $records->where($attribute, filter_var($value, FILTER_VALIDATE_BOOLEAN));
69			} else {
70			// Partial string match
71			$records = $records->where($attribute, 'like', "%$value%");
			0 ignored issues – show Coding Style Best Practice introduced 2016-05-08 10:38 UTC by Report Bug Copy Issue Report As per coding-style, please use concatenation or `sprintf` for the variable `$value` instead of interpolation. It is generally a best practice as it is often more readable to use concatenation instead of interpolation for variables inside strings. // Instead of $x = "foo $bar $baz"; // Better use either $x = "foo " . $bar . " " . $baz; $x = sprintf("foo %s %s", $bar, $baz); Loading history...
72			}
73			}
74
75			try {
76			$records = $records->get();
77			} catch (QueryException $e) {
78			return $this->error(Response::HTTP_BAD_REQUEST, 'Invalid query parameters');
79			}
80
81			return new JsonApiResponse($this->transformCollection($records, $params['fields']));
82			}
83
84			/**
85			* Store a new record.
86			*
87			* @param Request $request
88			*
89			* @return JsonApiResponse
90			*/
91			public function storeAction(Request $request)
92			{
93			$record = $this->getModel()->create((array) $request->input('data.attributes'));
94
95			if ($relationships = $request->input('data.relationships')) {
96			$this->updateRecordRelationships($record, (array) $relationships);
97			}
98
99			return new JsonApiResponse($this->transformRecord($record), Response::HTTP_CREATED);
100			}
101
102			/**
103			* Return a specified record.
104			*
105			* @param Request $request
106			* @param Model\|int $record
107			*
108			* @return JsonApiResponse
109			*/
110			public function showAction(Request $request, $record)
111			{
112			$record = $record instanceof Model ? $record : $this->findModelInstance($record);
113			$params = $this->getRequestParameters($request);
114
115			return new JsonApiResponse($this->transformRecord($record, $params['fields'], $params['include']));
116			}
117
118			/**
119			* Update a specified record.
120			*
121			* @param Request $request
122			* @param Model\|int $record
123			*
124			* @return JsonApiResponse
125			*/
126			public function updateAction(Request $request, $record)
127			{
128			$record = $record instanceof Model ? $record : $this->findModelInstance($record);
129			$record->update((array) $request->input('data.attributes'));
130
131			if ($relationships = $request->input('data.relationships')) {
132			$this->updateRecordRelationships($record, (array) $relationships);
133			}
134
135			return $this->showAction($request, $record);
136			}
137
138			/**
139			* Destroy a specified record.
140			*
141			* @param Request $request
142			* @param Model\|int $record
143			*
144			* @return JsonApiResponse
145			*/
146			public function destroyAction(Request $request, $record)
			0 ignored issues – show Unused Code introduced 2016-05-03 18:58 UTC by Report Bug Copy Issue Report The parameter `$request` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
147			{
148			$record = $record instanceof Model ? $record : $this->findModelInstance($record);
149			$record->delete();
150
151			return new JsonApiResponse(null, Response::HTTP_NO_CONTENT);
152			}
153
154			/**
155			* Update a named many-to-one relationship association on a specified record.
156			* http://jsonapi.org/format/#crud-updating-to-one-relationships
157			*
158			* @param Request $request
159			* @param Model\|int $record
160			* @param string $relation
161			* @param string\|null $foreignKey
162			*
163			* @return JsonApiResponse
164			*/
165			public function updateToOneRelationshipAction(Request $request, $record, $relation, $foreignKey = null)
166			{
167			if (!in_array($relation, $this->getModelRelationships())) {
168			return $this->error(Reponse::HTTP_NOT_FOUND);
			0 ignored issues – show Bug introduced 2016-05-08 12:35 UTC by Report Bug Copy Issue Report The call to `error()` misses a required argument `$title`. This check looks for function calls that miss required arguments. Loading history...
169			}
170
171			$record = $record instanceof Model ? $record : $this->findModelInstance($record);
172			$data = (array) $request->input('data');
173
174			$record->update([($foreignKey ?: $relation . '_id') => $data['id']]);
175
176			return new JsonApiResponse();
177			}
178
179			/**
180			* Update named many-to-many relationship entries on a specified record.
181			* http://jsonapi.org/format/#crud-updating-to-many-relationships
182			*
183			* @param Request $request
184			* @param Model\|int $record
185			* @param string $relation
186			*
187			* @return JsonApiResponse
188			*/
189			public function updateToManyRelationshipAction(Request $request, $record, $relation)
190			{
191			if (!in_array($relation, $this->getModelRelationships())) {
192			return $this->error(Reponse::HTTP_NOT_FOUND);
			0 ignored issues – show Bug introduced 2016-05-08 12:35 UTC by Report Bug Copy Issue Report The call to `error()` misses a required argument `$title`. This check looks for function calls that miss required arguments. Loading history...
193			}
194
195			$record = $record instanceof Model ? $record : $this->findModelInstance($record);
196			$relationships = (array) $request->input('data');
197			$items = [];
198
199			foreach ($relationships as $item) {
200			$items[$item['id']] = $item['attributes'];
201			}
202
203			switch ($request->method()) {
204			case 'PATCH':
205			$record->{$relation}()->sync($items);
206			break;
207			case 'POST':
208			$record->{$relation}()->sync($items, false);
209			break;
210			case 'DELETE':
211			$record->{$relation}()->detach(array_keys($items));
212			}
213
214			return new JsonApiResponse();
215			}
216
217			/**
218			* Return an instance of the resource by primary key.
219			*
220			* @param int $key
221			*
222			* @throws \Illuminate\Database\Eloquent\ModelNotFoundException
223			*
224			* @return Model
225			*/
226			protected function findModelInstance($key)
227			{
228			return $this->getModel()->findOrFail($key);
229			}
230
231			/**
232			* Return any JSON API resource parameters from a request.
233			*
234			* @param Request $request
235			*
236			* @return array
237			*/
238			protected function getRequestParameters($request)
239			{
240			return [
241			'fields' => $this->getRequestQuerySet($request, 'fields.' . $this->getModelType()),
242			'include' => $this->getRequestQuerySet($request, 'include'),
243			'sort' => $this->getRequestQuerySet($request, 'sort'),
244			'filter' => (array) $request->input('filter'),
245			];
246			}
247
248			/**
249			* Return any comma separated values in a request query field as an array.
250			*
251			* @param Request $request
252			* @param string $key
253			*
254			* @return array
255			*/
256			protected function getRequestQuerySet($request, $key)
257			{
258			return preg_split('/,/', $request->input($key), null, PREG_SPLIT_NO_EMPTY);
259			}
260
261			/**
262			* Transform a model instance into a JSON API object.
263			*
264			* @param Model $record
265			* @param array\|null $fields Field names of attributes to limit to
266			* @param array\|null $include Relations to include
267			*
268			* @return array
269			*/
270			protected function transformRecord($record, array $fields = [], array $include = [])
271			{
272			$relations = array_unique(array_merge($record->getRelations(), $include));
273			$attributes = $record->load($relations)->toArray();
274			$relationships = [];
275			$included = [];
276
277			foreach ($relations as $relation) {
278			$relationships[$relation] = [
279			'data' => []
280			];
281
282			foreach (array_pull($attributes, $relation) as $relatedRecord) {
283			$relationships[$relation]['data'][] = [
284			'type' => $relation,
285			'id' => $relatedRecord['id'],
286			];
287
288			if (in_array($relation, $include)) {
289			$included[] = [
290			'type' => $relation,
291			'id' => $relatedRecord['id'],
292			'attributes' => array_except($relatedRecord, ['id', 'pivot']),
293			];
294			}
295			}
296			}
297
298			if (!empty($fields)) {
299			$attributes = array_only($attributes, $fields);
300			}
301
302			$data = array_filter([
303			'type' => $record->getTable(),
304			'id' => $record->id,
305			'attributes' => array_except($attributes, ['id']),
306			'relationships' => $relationships,
307			]);
308
309			return array_filter(compact('data', 'included'));
310			}
311
312			/**
313			* Transform a set of models into a JSON API collection.
314			*
315			* @param \Illuminate\Support\Collection $records
316			* @param array $fields
317			*
318			* @return array
319			*/
320			protected function transformCollection($records, array $fields = [])
			0 ignored issues – show Unused Code introduced 2016-05-08 12:38 UTC by Report Bug Copy Issue Report The parameter `$fields` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
321			{
322			$data = $records->map(function ($record) {
323			return $this->transformRecord($record, $fields)['data'];
			0 ignored issues – show Bug introduced 2016-05-08 12:38 UTC by Report Bug Copy Issue Report The variable `$fields` does not exist. Did you forget to declare it? This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug. Loading history...
324			});
325
326			return compact('data');
327			}
328
329			/**
330			* Transform a set of models into a collection of JSON API resource
331			* identifier objects.
332			*
333			* @param \Illuminate\Support\Collection $records
334			*
335			* @return array
336			*/
337			protected function transformCollectionIds($records)
338			{
339			$data = $records->map(function ($record) {
340			return [
341			'type' => $record->getTable(),
342			'id' => $record->id,
343			];
344			});
345
346			return compact('data');
347			}
348
349			/**
350			* Update one or more relationships on a model instance.
351			*
352			* @param Model $record
353			* @param array $relationships
354			*/
355			protected function updateRecordRelationships($record, array $relationships)
356			{
357			foreach ($relationships as $name => $relationship) {
358			if (in_array($name, $this->getModelRelationships())) {
359			$relation = $this->getModelRelationships()[$name];
360			$data = $relationship['data'];
361
362			if ($relation instanceof BelongsTo) {
			0 ignored issues – show Bug introduced 2016-05-08 12:35 UTC by Report Bug Copy Issue Report The class `Huntie\JsonApi\Http\Controllers\BelongsTo` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
363			$record->update([$relation->getForeignKey() => $data['id']]);
364			} else if ($relation instanceof BelongsToMany) {
			0 ignored issues – show Bug introduced 2016-05-08 12:35 UTC by Report Bug Copy Issue Report The class `Huntie\JsonApi\Http\Controllers\BelongsToMany` does not exist. Did you forget a USE statement, or did you not list all dependencies? This error could be the result of: 1. Missing dependencies PHP Analyzer uses your `composer.json` file (if available) to determine the dependencies of your project and to determine all the available classes and functions. It expects the `composer.json` to be in the root folder of your repository. Are you sure this class is defined by one of your dependencies, or did you maybe not list a dependency in either the `require` or `require-dev` section? 2. Missing use statement PHP does not complain about undefined classes in `ìnstanceof` checks. For example, the following PHP code will work perfectly fine: if ($x instanceof DoesNotExist) { // Do something. } If you have not tested against this specific condition, such errors might go unnoticed. Loading history...
365			$record->{$name}()->sync(array_pluck($data, 'id'));
366			}
367			}
368			}
369			}
370			}
371

huntie / laravel-simple-jsonapi

Push — relationships ( 489f2c...b6e256 )

JsonApiController B

Complexity

Size/Duplication

Coupling/Cohesion

Importance

17 Methods

How to fix Complexity

Complex Class

1. Missing dependencies

2. Missing use statement

1. Missing dependencies

2. Missing use statement

Duplication Side-by-Side

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