PostgreSQLQuery - Code Metrics - Inspection of "Merge branch '2'" - silverstripe/silverstripe-postgresql - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Sam

created 2019-11-28 21:47 UTC

PostgreSQLQuery A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	94
Duplicated Lines	0 %

Importance

Changes	6
Bugs	0	Features	0

Metric	Value
eloc	35
c	6
b	0
f	0
dl	0
loc	94
rs	10
wmc	14

6 Methods

Rating	Name	Size	Complexity
A	__destruct()	4	2
A	__construct()	7	2
A	getIterator()	4	2
A	numRecords()	3	1
A	parseResult()	20	5
A	nextRecord()	10	2

<?php

namespace SilverStripe\PostgreSQL;

use SilverStripe\ORM\Connect\Query;

/**
 * A result-set from a PostgreSQL database.
 *
 * @package sapphire
 * @subpackage model
 */
class PostgreSQLQuery extends Query
{
    /**
     * The internal Postgres handle that points to the result set.
     * @var resource
     */
    private $handle;

    private $columnNames = [];

    /**
     * Mapping of postgresql types to PHP types
     * Note that the bool => int mapping is by design, designed to mimic MySQL's behaviour
     * @var array
     */
    protected static $typeMapping = [
        'bool' => 'int',
        'int2' => 'int',
        'int4' => 'int',
        'int8' => 'int',
        'float4' => 'float',
        'float8' => 'float',
        'numeric' => 'float',
    ];

    /**
     * Hook the result-set given into a Query class, suitable for use by sapphire.
     * @param resource $handle the internal Postgres handle that is points to the resultset.
     */
    public function __construct($handle)
    {
        $this->handle = $handle;

        $numColumns = pg_num_fields($handle);
        for ($i = 0; $i < $numColumns; $i++) {
            $this->columnNames[$i] = pg_field_name($handle, $i);
        }
    }

    public function __destruct()
    {
        if (is_resource($this->handle)) {
            pg_free_result($this->handle);
        }
    }

    public function getIterator()
    {
        while ($data = $this->nextRecord()) {
            yield $data;
interface HasName {
    /** @return string */
    public function getName();
}

class Name {
    public $name;
}

class User implements HasName {
    /** @return string|Name */
    public function getName() {
        return new Name('foo'); // This is a violation of the ``HasName`` interface
                                // which only allows a string value to be returned.
    }
}
        }
    }

    public function numRecords()
    {
        return pg_num_rows($this->handle);
    }

    public function nextRecord()
    {
        $row = pg_fetch_array($this->handle, null, PGSQL_NUM);

        // Correct non-string types
        if ($row) {

            return $this->parseResult($row);
        }

        return false;
    }

    /**
     * @param array $row
     * @return array
     */
    protected function parseResult(array $row)
    {
        $record = [];

        foreach ($row as $i => $v) {
            $k = $this->columnNames[$i];
            $record[$k] = $v;
            $type = pg_field_type($this->handle, $i);
            if (isset(self::$typeMapping[$type])) {
                if ($type === 'bool' && $record[$k] === 't') {
                    $record[$k] = 1;

                    // Note that boolean 'f' will be converted to 0 by this
                } else {
                    settype($record[$k], self::$typeMapping[$type]);
                }
            }
        }

        return $record;
    }
}


1			<?php
2
3			namespace SilverStripe\PostgreSQL;
4
5			use SilverStripe\ORM\Connect\Query;
6
7			/**
8			* A result-set from a PostgreSQL database.
9			*
10			* @package sapphire
11			* @subpackage model
12			*/
13			class PostgreSQLQuery extends Query
14			{
15			/**
16			* The internal Postgres handle that points to the result set.
17			* @var resource
18			*/
19			private $handle;
20
21			private $columnNames = [];
22
23			/**
24			* Mapping of postgresql types to PHP types
25			* Note that the bool => int mapping is by design, designed to mimic MySQL's behaviour
26			* @var array
27			*/
28			protected static $typeMapping = [
29			'bool' => 'int',
30			'int2' => 'int',
31			'int4' => 'int',
32			'int8' => 'int',
33			'float4' => 'float',
34			'float8' => 'float',
35			'numeric' => 'float',
36			];
37
38			/**
39			* Hook the result-set given into a Query class, suitable for use by sapphire.
40			* @param resource $handle the internal Postgres handle that is points to the resultset.
41			*/
42			public function __construct($handle)
43			{
44			$this->handle = $handle;
45
46			$numColumns = pg_num_fields($handle);
47			for ($i = 0; $i < $numColumns; $i++) {
48			$this->columnNames[$i] = pg_field_name($handle, $i);
49			}
50			}
51
52			public function __destruct()
53			{
54			if (is_resource($this->handle)) {
55			pg_free_result($this->handle);
56			}
57			}
58
59			public function getIterator()
60			{
61			while ($data = $this->nextRecord()) {
62			yield $data;
			0 ignored issues – show Bug Best Practice introduced 2018-11-26 13:34 UTC by Report Bug Copy Issue Report The expression `yield $data` returns the type `Generator` which is incompatible with the return type mandated by `SilverStripe\ORM\Connect\Query::getIterator()` of `array`. In the issue above, the returned value is violating the contract defined by the mentioned interface. Let's take a look at an example: interface HasName { /** @return string / public function getName(); } class Name { public $name; } class User implements HasName { /* @return string\|Name */ public function getName() { return new Name('foo'); // This is a violation of the ``HasName`` interface // which only allows a string value to be returned. } } Loading history...
63			}
64			}
65
66			public function numRecords()
67			{
68			return pg_num_rows($this->handle);
69			}
70
71			public function nextRecord()
72			{
73			$row = pg_fetch_array($this->handle, null, PGSQL_NUM);
74
75			// Correct non-string types
76			if ($row) {
			0 ignored issues – show Bug Best Practice introduced 2019-11-28 21:51 UTC by Report Bug Copy Issue Report The expression `$row` of type `array` is implicitly converted to a boolean; are you sure this is intended? If so, consider using `! empty($expr)` instead to make it clear that you intend to check for an array without elements. This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent. Consider making the comparison explicit by using `empty(..)` or `! empty(...)` instead. Loading history...
77			return $this->parseResult($row);
78			}
79
80			return false;
81			}
82
83			/**
84			* @param array $row
85			* @return array
86			*/
87			protected function parseResult(array $row)
88			{
89			$record = [];
90
91			foreach ($row as $i => $v) {
92			$k = $this->columnNames[$i];
93			$record[$k] = $v;
94			$type = pg_field_type($this->handle, $i);
95			if (isset(self::$typeMapping[$type])) {
96			if ($type === 'bool' && $record[$k] === 't') {
97			$record[$k] = 1;
98
99			// Note that boolean 'f' will be converted to 0 by this
100			} else {
101			settype($record[$k], self::$typeMapping[$type]);
102			}
103			}
104			}
105
106			return $record;
107			}
108			}
109

silverstripe / silverstripe-postgresql

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PostgreSQLQuery A

Complexity

Size/Duplication

Importance

6 Methods

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