Paginator::unbindUnusedQueryParams() - Code Metrics - Inspection of "Merge pull request #7382 from Majkl578/homepage-2...." - doctrine/orm - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.7 ( 4e7157...01cff9 )

by Michael

created 2018-09-23 05:14 UTC

Paginator::unbindUnusedQueryParams() A

↳ Parent: Paginator

Complexity

Conditions	4
Paths	3

Size

Total Lines	16
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	4

Importance

Changes

Metric	Value
cc	4
eloc	8
nc	3
nop	1
dl	0
loc	16
ccs	9
cts	9
cp	1
crap	4
rs	10
c	0
b	0
f	0

<?php
/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.doctrine-project.org>.
 */

namespace Doctrine\ORM\Tools\Pagination;

use Doctrine\ORM\Query\Parser;
use Doctrine\ORM\QueryBuilder;
use Doctrine\ORM\Query;
use Doctrine\ORM\Query\ResultSetMapping;
use Doctrine\ORM\NoResultException;

/**
 * The paginator can handle various complex scenarios with DQL.
 *
 * @author Pablo Díez <[email protected]>
 * @author Benjamin Eberlei <[email protected]>
 * @license New BSD
 */
class Paginator implements \Countable, \IteratorAggregate
{
    /**
     * @var Query
     */
    private $query;

    /**
     * @var bool
     */
    private $fetchJoinCollection;

    /**
     * @var bool|null
     */
    private $useOutputWalkers;

    /**
     * @var int
     */
    private $count;

    /**
     * Constructor.
     *
     * @param Query|QueryBuilder $query               A Doctrine ORM query or query builder.
     * @param boolean            $fetchJoinCollection Whether the query joins a collection (true by default).
     */
    public function __construct($query, $fetchJoinCollection = true)
    {
        if ($query instanceof QueryBuilder) {
            $query = $query->getQuery();
        }

        $this->query = $query;
        $this->fetchJoinCollection = (bool) $fetchJoinCollection;
    }

    /**
     * Returns the query.
     *
     * @return Query
     */
    public function getQuery()
    {
        return $this->query;
    }

    /**
     * Returns whether the query joins a collection.
     *
     * @return boolean Whether the query joins a collection.
     */
    public function getFetchJoinCollection()
    {
        return $this->fetchJoinCollection;
    }

    /**
     * Returns whether the paginator will use an output walker.
     *
     * @return bool|null
     */
    public function getUseOutputWalkers()
    {
        return $this->useOutputWalkers;
    }

    /**
     * Sets whether the paginator will use an output walker.
     *
     * @param bool|null $useOutputWalkers
     *
     * @return $this
     */
    public function setUseOutputWalkers($useOutputWalkers)
    {
        $this->useOutputWalkers = $useOutputWalkers;

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function count()
    {
        if ($this->count === null) {
            try {
                $this->count = array_sum(array_map('current', $this->getCountQuery()->getScalarResult()));
            } catch (NoResultException $e) {
                $this->count = 0;
            }
        }

        return $this->count;
    }

    /**
     * {@inheritdoc}
     */
    public function getIterator()
    {
        $offset = $this->query->getFirstResult();
        $length = $this->query->getMaxResults();

        if ($this->fetchJoinCollection) {
            $subQuery = $this->cloneQuery($this->query);

            if ($this->useOutputWalker($subQuery)) {
                $subQuery->setHint(Query::HINT_CUSTOM_OUTPUT_WALKER, LimitSubqueryOutputWalker::class);
            } else {
                $this->appendTreeWalker($subQuery, LimitSubqueryWalker::class);
                $this->unbindUnusedQueryParams($subQuery);
            }

            $subQuery->setFirstResult($offset)->setMaxResults($length);

            $ids = array_map('current', $subQuery->getScalarResult());

            $whereInQuery = $this->cloneQuery($this->query);
            // don't do this for an empty id array
            if (count($ids) === 0) {
                return new \ArrayIterator([]);
            }

            $this->appendTreeWalker($whereInQuery, WhereInWalker::class);
            $whereInQuery->setHint(WhereInWalker::HINT_PAGINATOR_ID_COUNT, count($ids));
            $whereInQuery->setFirstResult(null)->setMaxResults(null);
            $whereInQuery->setParameter(WhereInWalker::PAGINATOR_ID_ALIAS, $ids);
            $whereInQuery->setCacheable($this->query->isCacheable());

            $result = $whereInQuery->getResult($this->query->getHydrationMode());
        } else {
            $result = $this->cloneQuery($this->query)
                ->setMaxResults($length)
                ->setFirstResult($offset)
                ->setCacheable($this->query->isCacheable())
                ->getResult($this->query->getHydrationMode())
            ;
        }

        return new \ArrayIterator($result);
    }

    /**
     * Clones a query.
     *
     * @param Query $query The query.
     *
     * @return Query The cloned query.
     */
    private function cloneQuery(Query $query)
    {
        /* @var $cloneQuery Query */
        $cloneQuery = clone $query;

        $cloneQuery->setParameters(clone $query->getParameters());
        $cloneQuery->setCacheable(false);

        foreach ($query->getHints() as $name => $value) {
            $cloneQuery->setHint($name, $value);
        }

        return $cloneQuery;
    }

    /**
     * Determines whether to use an output walker for the query.
     *
     * @param Query $query The query.
     *
     * @return bool
     */
    private function useOutputWalker(Query $query)
    {
        if ($this->useOutputWalkers === null) {
            return (bool) $query->getHint(Query::HINT_CUSTOM_OUTPUT_WALKER) === false;
        }

        return $this->useOutputWalkers;
    }

    /**
     * Appends a custom tree walker to the tree walkers hint.
     *
     * @param Query  $query
     * @param string $walkerClass
     */
    private function appendTreeWalker(Query $query, $walkerClass)
    {
        $hints = $query->getHint(Query::HINT_CUSTOM_TREE_WALKERS);

        if ($hints === false) {
            $hints = [];
        }

        $hints[] = $walkerClass;
        $query->setHint(Query::HINT_CUSTOM_TREE_WALKERS, $hints);
    }

    /**
     * Returns Query prepared to count.
     *
     * @return Query
     */
    private function getCountQuery()
    {
        /* @var $countQuery Query */
        $countQuery = $this->cloneQuery($this->query);

        if ( ! $countQuery->hasHint(CountWalker::HINT_DISTINCT)) {
            $countQuery->setHint(CountWalker::HINT_DISTINCT, true);
        }

        if ($this->useOutputWalker($countQuery)) {
            $platform = $countQuery->getEntityManager()->getConnection()->getDatabasePlatform(); // law of demeter win

            $rsm = new ResultSetMapping();
            $rsm->addScalarResult($platform->getSQLResultCasing('dctrn_count'), 'count');

            $countQuery->setHint(Query::HINT_CUSTOM_OUTPUT_WALKER, CountOutputWalker::class);
            $countQuery->setResultSetMapping($rsm);
        } else {
            $this->appendTreeWalker($countQuery, CountWalker::class);
            $this->unbindUnusedQueryParams($countQuery);
        }

        $countQuery->setFirstResult(null)->setMaxResults(null);

        return $countQuery;
    }

    private function unbindUnusedQueryParams(Query $query): void
    {
        $parser            = new Parser($query);
        $parameterMappings = $parser->parse()->getParameterMappings();
        /* @var $parameters \Doctrine\Common\Collections\Collection|\Doctrine\ORM\Query\Parameter[] */
        $parameters        = $query->getParameters();

        foreach ($parameters as $key => $parameter) {
            $parameterName = $parameter->getName();

            if ( ! (isset($parameterMappings[$parameterName]) || array_key_exists($parameterName, $parameterMappings))) {
                unset($parameters[$key]);
            }
        }

        $query->setParameters($parameters);
    }
}


1		<?php
2		/*
3		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4		* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5		* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
6		* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
7		* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
8		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
9		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
10		* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
11		* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
12		* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
13		* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
14		*
15		* This software consists of voluntary contributions made by many individuals
16		* and is licensed under the MIT license. For more information, see
17		* <http://www.doctrine-project.org>.
18		*/
19
20		namespace Doctrine\ORM\Tools\Pagination;
21
22		use Doctrine\ORM\Query\Parser;
23		use Doctrine\ORM\QueryBuilder;
24		use Doctrine\ORM\Query;
25		use Doctrine\ORM\Query\ResultSetMapping;
26		use Doctrine\ORM\NoResultException;
27
28		/**
29		* The paginator can handle various complex scenarios with DQL.
30		*
31		* @author Pablo Díez <[email protected]>
32		* @author Benjamin Eberlei <[email protected]>
33		* @license New BSD
34		*/
35		class Paginator implements \Countable, \IteratorAggregate
36		{
37		/**
38		* @var Query
39		*/
40		private $query;
41
42		/**
43		* @var bool
44		*/
45		private $fetchJoinCollection;
46
47		/**
48		* @var bool\|null
49		*/
50		private $useOutputWalkers;
51
52		/**
53		* @var int
54		*/
55		private $count;
56
57		/**
58		* Constructor.
59		*
60		* @param Query\|QueryBuilder $query A Doctrine ORM query or query builder.
61		* @param boolean $fetchJoinCollection Whether the query joins a collection (true by default).
62		*/
63	108	public function __construct($query, $fetchJoinCollection = true)
64		{
65	108	if ($query instanceof QueryBuilder) {
66		$query = $query->getQuery();
67		}
68
69	108	$this->query = $query;
70	108	$this->fetchJoinCollection = (bool) $fetchJoinCollection;
71	108	}
72
73		/**
74		* Returns the query.
75		*
76		* @return Query
77		*/
78		public function getQuery()
79		{
80		return $this->query;
81		}
82
83		/**
84		* Returns whether the query joins a collection.
85		*
86		* @return boolean Whether the query joins a collection.
87		*/
88		public function getFetchJoinCollection()
89		{
90		return $this->fetchJoinCollection;
91		}
92
93		/**
94		* Returns whether the paginator will use an output walker.
95		*
96		* @return bool\|null
97		*/
98		public function getUseOutputWalkers()
99		{
100		return $this->useOutputWalkers;
101		}
102
103		/**
104		* Sets whether the paginator will use an output walker.
105		*
106		* @param bool\|null $useOutputWalkers
107		*
108		* @return $this
109		*/
110	97	public function setUseOutputWalkers($useOutputWalkers)
111		{
112	97	$this->useOutputWalkers = $useOutputWalkers;
113
114	97	return $this;
115		}
116
117		/**
118		* {@inheritdoc}
119		*/
120	18	public function count()
121		{
122	18	if ($this->count === null) {
123		try {
124	18	$this->count = array_sum(array_map('current', $this->getCountQuery()->getScalarResult()));
125	2	} catch (NoResultException $e) {
126		$this->count = 0;
127		}
128		}
129
130	16	return $this->count;
131		}
132
133		/**
134		* {@inheritdoc}
135		*/
136	95	public function getIterator()
137		{
138	95	$offset = $this->query->getFirstResult();
139	95	$length = $this->query->getMaxResults();
140
141	95	if ($this->fetchJoinCollection) {
142	68	$subQuery = $this->cloneQuery($this->query);
143
144	68	if ($this->useOutputWalker($subQuery)) {
145	41	$subQuery->setHint(Query::HINT_CUSTOM_OUTPUT_WALKER, LimitSubqueryOutputWalker::class);
146		} else {
147	27	$this->appendTreeWalker($subQuery, LimitSubqueryWalker::class);
148	27	$this->unbindUnusedQueryParams($subQuery);
149		}
150
151	65	$subQuery->setFirstResult($offset)->setMaxResults($length);
152
153	65	$ids = array_map('current', $subQuery->getScalarResult());
154
155	65	$whereInQuery = $this->cloneQuery($this->query);
156		// don't do this for an empty id array
157	65	if (count($ids) === 0) {
158	2	return new \ArrayIterator([]);
159		}
160
161	64	$this->appendTreeWalker($whereInQuery, WhereInWalker::class);
162	64	$whereInQuery->setHint(WhereInWalker::HINT_PAGINATOR_ID_COUNT, count($ids));
163	64	$whereInQuery->setFirstResult(null)->setMaxResults(null);
164	64	$whereInQuery->setParameter(WhereInWalker::PAGINATOR_ID_ALIAS, $ids);
165	64	$whereInQuery->setCacheable($this->query->isCacheable());
166
167	64	$result = $whereInQuery->getResult($this->query->getHydrationMode());
168		} else {
169	27	$result = $this->cloneQuery($this->query)
170	27	->setMaxResults($length)
171	27	->setFirstResult($offset)
172	27	->setCacheable($this->query->isCacheable())
173	27	->getResult($this->query->getHydrationMode())
174		;
175		}
176
177	90	return new \ArrayIterator($result);
178		}
179
180		/**
181		* Clones a query.
182		*
183		* @param Query $query The query.
184		*
185		* @return Query The cloned query.
186		*/
187	108	private function cloneQuery(Query $query)
188		{
189		/* @var $cloneQuery Query */
190	108	$cloneQuery = clone $query;
191
192	108	$cloneQuery->setParameters(clone $query->getParameters());
193	108	$cloneQuery->setCacheable(false);
194
195	108	foreach ($query->getHints() as $name => $value) {
196	3	$cloneQuery->setHint($name, $value);
197		}
198
199	108	return $cloneQuery;
200		}
201
202		/**
203		* Determines whether to use an output walker for the query.
204		*
205		* @param Query $query The query.
206		*
207		* @return bool
208		*/
209	82	private function useOutputWalker(Query $query)
210		{
211	82	if ($this->useOutputWalkers === null) {
212	11	return (bool) $query->getHint(Query::HINT_CUSTOM_OUTPUT_WALKER) === false;
213		}
214
215	71	return $this->useOutputWalkers;
216		}
217
218		/**
219		* Appends a custom tree walker to the tree walkers hint.
220		*
221		* @param Query $query
222		* @param string $walkerClass
223		*/
224	75	private function appendTreeWalker(Query $query, $walkerClass)
225		{
226	75	$hints = $query->getHint(Query::HINT_CUSTOM_TREE_WALKERS);
227
228	75	if ($hints === false) {
229	74	$hints = [];
230		}
231
232	75	$hints[] = $walkerClass;
233	75	$query->setHint(Query::HINT_CUSTOM_TREE_WALKERS, $hints);
234	75	}
235
236		/**
237		* Returns Query prepared to count.
238		*
239		* @return Query
240		*/
241	18	private function getCountQuery()
242		{
243		/* @var $countQuery Query */
244	18	$countQuery = $this->cloneQuery($this->query);
245
246	18	if ( ! $countQuery->hasHint(CountWalker::HINT_DISTINCT)) {
247	18	$countQuery->setHint(CountWalker::HINT_DISTINCT, true);
248		}
249
250	18	if ($this->useOutputWalker($countQuery)) {
251	9	$platform = $countQuery->getEntityManager()->getConnection()->getDatabasePlatform(); // law of demeter win
252
253	9	$rsm = new ResultSetMapping();
254	9	$rsm->addScalarResult($platform->getSQLResultCasing('dctrn_count'), 'count');
255
256	9	$countQuery->setHint(Query::HINT_CUSTOM_OUTPUT_WALKER, CountOutputWalker::class);
257	9	$countQuery->setResultSetMapping($rsm);
258		} else {
259	10	$this->appendTreeWalker($countQuery, CountWalker::class);
260	10	$this->unbindUnusedQueryParams($countQuery);
261		}
262
263	16	$countQuery->setFirstResult(null)->setMaxResults(null);
264
265	16	return $countQuery;
266		}
267
268	34	private function unbindUnusedQueryParams(Query $query): void
269		{
270	34	$parser = new Parser($query);
271	34	$parameterMappings = $parser->parse()->getParameterMappings();
272		/* @var $parameters \Doctrine\Common\Collections\Collection\|\Doctrine\ORM\Query\Parameter[] */
273	29	$parameters = $query->getParameters();
274
275	29	foreach ($parameters as $key => $parameter) {
276	4	$parameterName = $parameter->getName();
277
278	4	if ( ! (isset($parameterMappings[$parameterName]) \|\| array_key_exists($parameterName, $parameterMappings))) {
279	4	unset($parameters[$key]);
280		}
281		}
282
283	29	$query->setParameters($parameters);
284	29	}
285		}
286

doctrine / orm

Push — 2.7 ( 4e7157...01cff9 )

Paginator::unbindUnusedQueryParams() A

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