QueryHelper::caseWhen() - Code Metrics - Inspection of "Merge pull request #5 from Horat1us/feature/case-w..." - Horat1us/yii2-base - Measure and Improve Code Quality continuously with Scrutinizer

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by Alexander

created 2017-09-04 16:11 UTC

QueryHelper::caseWhen() A

↳ Parent: QueryHelper

Complexity

Conditions	3
Paths	4

Size

Total Lines	16
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3

Importance

Changes

Metric	Value
dl	0
loc	16
ccs	8
cts	8
cp	1
rs	9.4285
c	0
b	0
f	0
cc	3
eloc	8
nc	4
nop	3
crap	3

<?php

namespace Horat1us\Yii\Helpers;

use yii\db\Expression;

/**
 * Class QueryHelper
 * @package Horat1us\Yii\Helpers
 */
class QueryHelper
{
    /**
     * @param string $sqlMethod
     * @param mixed[] $params
     * @return Expression
     */
    public static function sqlCall(string $sqlMethod, ...$params): Expression
    {
        $expressions = implode(', ', array_map(function ($expression) {
            return "({$expression})";
        }, (array)$params));

        $command = "{$sqlMethod}({$expressions})";

        return new Expression($command);
    }

    /**
     * Only for PostgreSQL
     *
     * @param array ...$params
     * @return Expression
     */
    public static function coalesce(...$params): Expression
    {
        return static::sqlCall('COALESCE', ...$params);
    }

    /**
     * @param array $cases
     * @param string|null $value
     * @param string|null $else
     * @return string
     */
    public static function caseWhen(array $cases, string $value = '', string $else = null): string
    {
        $command = "CASE {$value}";

        foreach ($cases as $condition => $statement) {
            $command .= " WHEN {$condition} THEN {$statement}";
        }

        if ($else) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            $command .= " ELSE {$else}";
        }

        $command .= " END";

        return new Expression($command);
    }
}

1		<?php
2
3		namespace Horat1us\Yii\Helpers;
4
5		use yii\db\Expression;
6
7		/**
8		* Class QueryHelper
9		* @package Horat1us\Yii\Helpers
10		*/
11		class QueryHelper
12		{
13		/**
14		* @param string $sqlMethod
15		* @param mixed[] $params
16		* @return Expression
17		*/
18		public static function sqlCall(string $sqlMethod, ...$params): Expression
19		{
20	3	$expressions = implode(', ', array_map(function ($expression) {
21	3	return "({$expression})";
22	3	}, (array)$params));
23
24	3	$command = "{$sqlMethod}({$expressions})";
25
26	3	return new Expression($command);
27		}
28
29		/**
30		* Only for PostgreSQL
31		*
32		* @param array ...$params
33		* @return Expression
34		*/
35	1	public static function coalesce(...$params): Expression
36		{
37	1	return static::sqlCall('COALESCE', ...$params);
38		}
39
40		/**
41		* @param array $cases
42		* @param string\|null $value
43		* @param string\|null $else
44		* @return string
45		*/
46	3	public static function caseWhen(array $cases, string $value = '', string $else = null): string
47		{
48	3	$command = "CASE {$value}";
49
50	3	foreach ($cases as $condition => $statement) {
51	3	$command .= " WHEN {$condition} THEN {$statement}";
52		}
53
54	3	if ($else) {
		0 ignored issues – show Bug Best Practice introduced 2017-09-04 15:42 UTC by Report Bug Copy Issue Report The expression `$else` of type `null\|string` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
55	1	$command .= " ELSE {$else}";
56		}
57
58	3	$command .= " END";
59
60	3	return new Expression($command);
61		}
62		}

Horat1us / yii2-base

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QueryHelper::caseWhen() A

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