CompilerCache::hashWhere() - Code Metrics - Inspection of "Merge pull request #147: add support for `Fragment..." - cycle/database - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.x ( be80d1...0b4d06 )

by Aleksei

created 2023-12-04 16:36 UTC

CompilerCache::hashWhere() F

↳ Parent: CompilerCache

Complexity

Conditions	30
Paths	304

Size

Total Lines	86
Code Lines	52

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	40
CRAP Score	31.9956

Importance

Changes

Metric	Value
cc	30
eloc	52
c	0
b	0
f	0
nc	304
nop	2
dl	0
loc	86
rs	2.0333
ccs	40
cts	46
cp	0.8696
crap	31.9956

How to fix Long Method Complexity

<?php

/**
 * This file is part of Cycle ORM package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Cycle\Database\Driver;

use Cycle\Database\Injection\Expression;
use Cycle\Database\Injection\Fragment;
use Cycle\Database\Injection\FragmentInterface;
use Cycle\Database\Injection\JsonExpression;
use Cycle\Database\Injection\Parameter;
use Cycle\Database\Injection\ParameterInterface;
use Cycle\Database\Query\QueryInterface;
use Cycle\Database\Query\QueryParameters;
use Cycle\Database\Query\SelectQuery;

/**
 * Caches calculated queries. Code in this class is performance optimized.
 */
final class CompilerCache implements CompilerInterface
{
    private array $cache = [];

    public function __construct(
        private CachingCompilerInterface $compiler
    ) {
    }

    /**
     * @psalm-param non-empty-string $identifier
     */
    public function quoteIdentifier(string $identifier): string
    {
        return $this->compiler->quoteIdentifier($identifier);
    }

    /**
     * @psalm-return non-empty-string
     */
    public function compile(QueryParameters $params, string $prefix, FragmentInterface $fragment): string
    {
        if ($fragment->getType() === self::SELECT_QUERY) {
            $queryHash = $prefix . $this->hashSelectQuery($params, $fragment->getTokens());

            if (isset($this->cache[$queryHash])) {
                return $this->cache[$queryHash];
            }

            return $this->cache[$queryHash] = $this->compiler->compile(
                new QueryParameters(),
                $prefix,
                $fragment
            );
        }

        if ($fragment->getType() === self::INSERT_QUERY) {
            $tokens = $fragment->getTokens();

            if (count($tokens['values']) === 1) {
                $queryHash = $prefix . $this->hashInsertQuery($params, $tokens);
                if (isset($this->cache[$queryHash])) {
                    return $this->cache[$queryHash];
                }

                return $this->cache[$queryHash] = $this->compiler->compile(
                    new QueryParameters(),
                    $prefix,
                    $fragment
                );
            }
        }

        return $this->compiler->compile(
            $params,
            $prefix,
            $fragment
        );
    }

    /**
     * @psalm-return non-empty-string
     */
    protected function hashInsertQuery(QueryParameters $params, array $tokens): string
    {
        $hash = 'i_' . $tokens['table'] . implode('_', $tokens['columns']) . '_r' . ($tokens['return'] ?? '');
        foreach ($tokens['values'] as $value) {
            if ($value instanceof FragmentInterface) {
                if ($value instanceof Expression || $value instanceof Fragment) {
                    foreach ($tokens['parameters'] as $param) {
                        $params->push($param);
                    }
                }

                $hash .= $value;
                continue;
            }

            if (!$value instanceof ParameterInterface) {
                $value = new Parameter($value);
            }

            if ($value->isArray()) {
                foreach ($value->getValue() as $child) {
                    if ($child instanceof FragmentInterface) {
                        continue;
                    }

                    if (!$child instanceof ParameterInterface) {
                        $child = new Parameter($child);
                    }

                    $params->push($child);
                }

                $hash .= 'P?';
                continue;
            }

            $params->push($value);
            $hash .= 'P?';
        }

        return $hash;
    }

    /**
     * @psalm-return non-empty-string
     */
    protected function hashSelectQuery(QueryParameters $params, array $tokens): string
    {
        // stable part of hash
        if (is_array($tokens['distinct']) && isset($tokens['distinct']['on'])) {
            $hash = 's_' . $tokens['forUpdate'] . '_on_' . $tokens['distinct']['on'];
        } else {
            $hash = 's_' . $tokens['forUpdate'] . '_' . $tokens['distinct'];
        }

        foreach ($tokens['from'] as $table) {
            if ($table instanceof SelectQuery) {
                $hash .= 's_' . ($table->getPrefix() ?? '');
                $hash .= $this->hashSelectQuery($params, $table->getTokens());
                continue;
            }

            $hash .= $table;
        }

        $hash .= $this->hashColumns($params, $tokens['columns']);

        foreach ($tokens['join'] as $join) {
            $hash .= 'j' . $join['alias'] . $join['type'];

            if ($join['outer'] instanceof SelectQuery) {
                $hash .= $join['outer']->getPrefix() === null ? '' : 'p_' . $join['outer']->getPrefix();
                $hash .= $this->hashSelectQuery($params, $join['outer']->getTokens());
            } else {
                $hash .= $join['outer'];
            }

            $hash .= 'on' . $this->hashWhere($params, $join['on']);
        }

        if ($tokens['where'] !== []) {
            $hash .= 'w' . $this->hashWhere($params, $tokens['where']);
        }

        if ($tokens['having'] !== []) {
            $hash .= 'h' . $this->hashWhere($params, $tokens['having']);
        }

        $hash .= implode(',', $tokens['groupBy']);

        foreach ($tokens['orderBy'] as $order) {
            $hash .= $order[0] . $order[1];
        }

        $hash .= $this->compiler->hashLimit($params, $tokens);

        foreach ($tokens['union'] as $union) {
            $hash .= $union[0];
            if ($union[1] instanceof SelectQuery) {
                $hash .= $union[1]->getPrefix() === null ? '' : 'p_' . $union[1]->getPrefix();
                $hash .= $this->hashSelectQuery($params, $union[1]->getTokens());
                continue;
            }

            $hash .= $union[1];
        }

        return $hash;
    }

    /**
     * @psalm-return non-empty-string
     */
    protected function hashWhere(QueryParameters $params, array $where): string
    {
        $hash = '';
        foreach ($where as $condition) {
            // OR/AND keyword
            [$boolean, $context] = $condition;

            $hash .= $boolean;
            if (is_string($context)) {
                $hash .= $context;
                continue;
            }

            if ($context instanceof FragmentInterface) {
                if (
                    $context instanceof Expression ||
                    $context instanceof Fragment ||
                    $context instanceof JsonExpression
                ) {
                    foreach ($context->getTokens()['parameters'] as $param) {
                        $params->push($param);
                    }
                }

                $hash .= $context;
                continue;
            }

            if ($context[0] instanceof QueryInterface) {
                $hash .= $context[0]->getPrefix() === null ? '' : 'p_' . $context[0]->getPrefix();
                $hash .= $this->hashSelectQuery($params, $context[0]->getTokens());
            } elseif ($context[0] instanceof ParameterInterface) {
                $hash .= $this->hashParam($params, $context[0]);
            } else {
                if ($context[0] instanceof Expression || $context[0] instanceof Fragment) {
                    foreach ($context[0]->getTokens()['parameters'] as $param) {
                        $params->push($param);
                    }
                }

                $hash .= $context[0];
            }

            // operator
            if ($context[1] instanceof Expression || $context[1] instanceof Fragment) {
                foreach ($context[1]->getTokens()['parameters'] as $param) {
                    $params->push($param);
                }
            }

            $hash .= $context[1];

            if ($context[2] instanceof QueryInterface) {
                $hash .= $context[2]->getPrefix() === null ? '' : 'p_' . $context[2]->getPrefix();
                $hash .= $this->hashSelectQuery($params, $context[2]->getTokens());
            } elseif ($context[2] instanceof ParameterInterface) {
                $hash .= $this->hashParam($params, $context[2]);
            } else {
                if ($context[2] instanceof Expression || $context[2] instanceof Fragment) {
                    foreach ($context[2]->getTokens()['parameters'] as $param) {
                        $params->push($param);
                    }
                }

                $hash .= $context[2];
            }

            if (isset($context[3])) {
                if ($context[3] instanceof QueryInterface) {
                    $hash .= $context[3]->getPrefix() === null ? '' : 'p_' . $context[3]->getPrefix();
                    $hash .= $this->hashSelectQuery($params, $context[3]->getTokens());
                } elseif ($context[3] instanceof ParameterInterface) {
                    $hash .= $this->hashParam($params, $context[3]);
                } else {
                    if ($context[3] instanceof Expression || $context[3] instanceof Fragment) {
                        foreach ($context[3]->getTokens()['parameters'] as $param) {
                            $params->push($param);
                        }
                    }

                    $hash .= $context[3];
                }
            }
        }

        return $hash;
    }

    /**
     * @psalm-return non-empty-string
     */
    protected function hashColumns(QueryParameters $params, array $columns): string
    {
        $hash = '';
        foreach ($columns as $column) {
            if ($column instanceof Expression || $column instanceof Fragment) {
                foreach ($column->getTokens()['parameters'] as $param) {
                    $params->push($param);
                }
            }

            $hash .= (string) $column . ',';
        }

        return $hash;
    }

    /**
     * @psalm-return non-empty-string
     */
    private function hashParam(QueryParameters $params, ParameterInterface $param): string
    {
        if ($param->isNull()) {
            return 'N';
        }

        if ($param->isArray()) {
            $simpleParams = [];
            foreach ($param->getValue() as $value) {
                if ($value instanceof FragmentInterface) {
                    foreach ($value->getTokens()['parameters'] as $fragmentParam) {
                        $params->push($fragmentParam);
                    }
                } else {
                    $simpleParams[] = $value;
                }
            }

            if ($simpleParams !== []) {
                $params->push(new Parameter($simpleParams));
            }

            return 'A' . count($param->getValue());
        }

        $params->push($param);

        return '?';
    }
}


1		<?php
2
3		/**
4		* This file is part of Cycle ORM package.
5		*
6		* For the full copyright and license information, please view the LICENSE
7		* file that was distributed with this source code.
8		*/
9
10		declare(strict_types=1);
11
12		namespace Cycle\Database\Driver;
13
14		use Cycle\Database\Injection\Expression;
15		use Cycle\Database\Injection\Fragment;
16		use Cycle\Database\Injection\FragmentInterface;
17		use Cycle\Database\Injection\JsonExpression;
18		use Cycle\Database\Injection\Parameter;
19		use Cycle\Database\Injection\ParameterInterface;
20		use Cycle\Database\Query\QueryInterface;
21		use Cycle\Database\Query\QueryParameters;
22		use Cycle\Database\Query\SelectQuery;
23
24		/**
25		* Caches calculated queries. Code in this class is performance optimized.
26		*/
27		final class CompilerCache implements CompilerInterface
28		{
29		private array $cache = [];
30	72
31		public function __construct(
32		private CachingCompilerInterface $compiler
33	72	) {
34		}
35
36		/**
37		* @psalm-param non-empty-string $identifier
38	2600	*/
39		public function quoteIdentifier(string $identifier): string
40	2600	{
41		return $this->compiler->quoteIdentifier($identifier);
42		}
43
44		/**
45		* @psalm-return non-empty-string
46	1946	*/
47		public function compile(QueryParameters $params, string $prefix, FragmentInterface $fragment): string
48	1946	{
49	1344	if ($fragment->getType() === self::SELECT_QUERY) {
50		$queryHash = $prefix . $this->hashSelectQuery($params, $fragment->getTokens());
51	1344
52	628	if (isset($this->cache[$queryHash])) {
53		return $this->cache[$queryHash];
54		}
55	984
56	984	return $this->cache[$queryHash] = $this->compiler->compile(
57		new QueryParameters(),
58		$prefix,
59		$fragment
60		);
61		}
62	860
63	348	if ($fragment->getType() === self::INSERT_QUERY) {
64		$tokens = $fragment->getTokens();
65	348
66	250	if (count($tokens['values']) === 1) {
67	250	$queryHash = $prefix . $this->hashInsertQuery($params, $tokens);
68	200	if (isset($this->cache[$queryHash])) {
69		return $this->cache[$queryHash];
70		}
71	62
72	62	return $this->cache[$queryHash] = $this->compiler->compile(
73		new QueryParameters(),
74		$prefix,
75		$fragment
76		);
77		}
78		}
79	636
80	636	return $this->compiler->compile(
81		$params,
82		$prefix,
83		$fragment
84		);
85		}
86
87		/**
88		* @psalm-return non-empty-string
89	250	*/
90		protected function hashInsertQuery(QueryParameters $params, array $tokens): string
91	250	{
92	250	$hash = 'i_' . $tokens['table'] . implode('_', $tokens['columns']) . '_r' . ($tokens['return'] ?? '');
93	250	foreach ($tokens['values'] as $value) {
94		if ($value instanceof FragmentInterface) {
95		if ($value instanceof Expression \|\| $value instanceof Fragment) {
96		foreach ($tokens['parameters'] as $param) {
97		$params->push($param);
98		}
99		}
100
101		$hash .= $value;
102		continue;
103		}
104	250
105		if (!$value instanceof ParameterInterface) {
106		$value = new Parameter($value);
107		}
108	250
109	250	if ($value->isArray()) {
110	250	foreach ($value->getValue() as $child) {
111		if ($child instanceof FragmentInterface) {
112		continue;
113		}
114	250
115	250	if (!$child instanceof ParameterInterface) {
116		$child = new Parameter($child);
117		}
118	250
119		$params->push($child);
120		}
121	250
122	250	$hash .= 'P?';
123		continue;
124		}
125
126		$params->push($value);
127		$hash .= 'P?';
128		}
129	250
130		return $hash;
131		}
132
133		/**
134		* @psalm-return non-empty-string
135	1344	*/
136		protected function hashSelectQuery(QueryParameters $params, array $tokens): string
137		{
138	1344	// stable part of hash
139	2	if (is_array($tokens['distinct']) && isset($tokens['distinct']['on'])) {
140		$hash = 's_' . $tokens['forUpdate'] . '_on_' . $tokens['distinct']['on'];
141	1344	} else {
142		$hash = 's_' . $tokens['forUpdate'] . '_' . $tokens['distinct'];
143		}
144	1344
145	1344	foreach ($tokens['from'] as $table) {
146	6	if ($table instanceof SelectQuery) {
147	6	$hash .= 's_' . ($table->getPrefix() ?? '');
148	6	$hash .= $this->hashSelectQuery($params, $table->getTokens());
149		continue;
150		}
151	1344
152		$hash .= $table;
153		}
154	1344
155		$hash .= $this->hashColumns($params, $tokens['columns']);
156	1344
157	210	foreach ($tokens['join'] as $join) {
158		$hash .= 'j' . $join['alias'] . $join['type'];
159	210
160	6	if ($join['outer'] instanceof SelectQuery) {
161	6	$hash .= $join['outer']->getPrefix() === null ? '' : 'p_' . $join['outer']->getPrefix();
162	6	$hash .= $this->hashSelectQuery($params, $join['outer']->getTokens());
163		} else {
164		$hash .= $join['outer'];
165	204	}
166	204
167		$hash .= 'on' . $this->hashWhere($params, $join['on']);
168		}
169	1344
170	648	if ($tokens['where'] !== []) {
171		$hash .= 'w' . $this->hashWhere($params, $tokens['where']);
172		}
173	1344
174	156	if ($tokens['having'] !== []) {
175		$hash .= 'h' . $this->hashWhere($params, $tokens['having']);
176		}
177	1344
178		$hash .= implode(',', $tokens['groupBy']);
179	1344
180	102	foreach ($tokens['orderBy'] as $order) {
181		$hash .= $order[0] . $order[1];
182		}
183	1344
184		$hash .= $this->compiler->hashLimit($params, $tokens);
185	1344
186	18	foreach ($tokens['union'] as $union) {
187	18	$hash .= $union[0];
188	18	if ($union[1] instanceof SelectQuery) {
189	18	$hash .= $union[1]->getPrefix() === null ? '' : 'p_' . $union[1]->getPrefix();
190	18	$hash .= $this->hashSelectQuery($params, $union[1]->getTokens());
191		continue;
192		}
193
194		$hash .= $union[1];
195		}
196	1344
197		return $hash;
198		}
199
200		/**
201		* @psalm-return non-empty-string
202	990	*/
203		protected function hashWhere(QueryParameters $params, array $where): string
204	990	{
205	990	$hash = '';
206		foreach ($where as $condition) {
207	990	// OR/AND keyword
208		[$boolean, $context] = $condition;
209	990
210	990	$hash .= $boolean;
211	180	if (is_string($context)) {
212	180	$hash .= $context;
213		continue;
214		}
215	984
216	6	if ($context instanceof FragmentInterface) {
217	6	if (
218	6	$context instanceof Expression \|\|
219		$context instanceof Fragment \|\|
220		$context instanceof JsonExpression
221		) {
222	6	foreach ($context->getTokens()['parameters'] as $param) {
223	6	$params->push($param);
224		}
225		}
226	984
227	18	$hash .= $context;
228	18	continue;
229	984	}
230	6
231		if ($context[0] instanceof QueryInterface) {
232	978	$hash .= $context[0]->getPrefix() === null ? '' : 'p_' . $context[0]->getPrefix();
233	12	$hash .= $this->hashSelectQuery($params, $context[0]->getTokens());
234	12	} elseif ($context[0] instanceof ParameterInterface) {
235		$hash .= $this->hashParam($params, $context[0]);
236		} else {
237		if ($context[0] instanceof Expression \|\| $context[0] instanceof Fragment) {
238	978	foreach ($context[0]->getTokens()['parameters'] as $param) {
239		$params->push($param);
240		}
241		}
242	984
243	12	$hash .= $context[0];
244	6	}
245
246		// operator
247		if ($context[1] instanceof Expression \|\| $context[1] instanceof Fragment) {
248	984	foreach ($context[1]->getTokens()['parameters'] as $param) {
249		$params->push($param);
250	984	}
251	30	}
252	30
253	984	$hash .= $context[1];
254	816
255		if ($context[2] instanceof QueryInterface) {
256	264	$hash .= $context[2]->getPrefix() === null ? '' : 'p_' . $context[2]->getPrefix();
257	264	$hash .= $this->hashSelectQuery($params, $context[2]->getTokens());
258	12	} elseif ($context[2] instanceof ParameterInterface) {
259		$hash .= $this->hashParam($params, $context[2]);
260		} else {
261		if ($context[2] instanceof Expression \|\| $context[2] instanceof Fragment) {
262	264	foreach ($context[2]->getTokens()['parameters'] as $param) {
263		$params->push($param);
264		}
265	984	}
266	48
267		$hash .= $context[2];
268		}
269	48
270	48	if (isset($context[3])) {
271		if ($context[3] instanceof QueryInterface) {
272		$hash .= $context[3]->getPrefix() === null ? '' : 'p_' . $context[3]->getPrefix();
273		$hash .= $this->hashSelectQuery($params, $context[3]->getTokens());
274		} elseif ($context[3] instanceof ParameterInterface) {
275		$hash .= $this->hashParam($params, $context[3]);
276		} else {
277		if ($context[3] instanceof Expression \|\| $context[3] instanceof Fragment) {
278		foreach ($context[3]->getTokens()['parameters'] as $param) {
279		$params->push($param);
280		}
281		}
282
283	990	$hash .= $context[3];
284		}
285		}
286		}
287
288		return $hash;
289	1344	}
290
291	1344	/**
292	1344	* @psalm-return non-empty-string
293	1344	*/
294	48	protected function hashColumns(QueryParameters $params, array $columns): string
295	12	{
296		$hash = '';
297		foreach ($columns as $column) {
298		if ($column instanceof Expression \|\| $column instanceof Fragment) {
299	1344	foreach ($column->getTokens()['parameters'] as $param) {
300		$params->push($param);
301		}
302	1344	}
303
304		$hash .= (string) $column . ',';
305		}
306
307		return $hash;
308	816	}
309
310	816	/**
311	24	* @psalm-return non-empty-string
312		*/
313		private function hashParam(QueryParameters $params, ParameterInterface $param): string
314	792	{
315		if ($param->isNull()) {
316	792	return 'N';
317	42	}
318
319		if ($param->isArray()) {
320	774	$simpleParams = [];
321		foreach ($param->getValue() as $value) {
322		if ($value instanceof FragmentInterface) {
323		foreach ($value->getTokens()['parameters'] as $fragmentParam) {
324		$params->push($fragmentParam);
325		}
326		} else {
327		$simpleParams[] = $value;
328		}
329		}
330
331		if ($simpleParams !== []) {
332		$params->push(new Parameter($simpleParams));
333		}
334
335		return 'A' . count($param->getValue());
336		}
337
338		$params->push($param);
339
340		return '?';
341		}
342		}
343

cycle / database

Push — 2.x ( be80d1...0b4d06 )

CompilerCache::hashWhere() F

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Long Method Complexity

Long Method

Duplication Side-by-Side

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