Sqlite - Code Metrics - Inspection of "Feature dbal" - tflori/orm - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#36)

by Thomas

created 2017-05-18 06:00 UTC

Sqlite A

↳ Parent: Project

Complexity

Total Complexity

Size/Duplication

Total Lines	126
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

100%

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
wmc	20
lcom	1
cbo	4
dl	0
loc	126
ccs	53
cts	53
cp	1
rs	10
c	2
b	0
f	0

5 Methods

Rating	Name	Size	Complexity
A	insert()	14	3
B	describe()	24	4
A	hasMultiplePrimaryKey()	6	1
D	normalizeColumnDefinition()	29	10
A	getType()	8	2

<?php

namespace ORM\Dbal;

use ORM\Dbal;
use ORM\Exception;

/**
 * Database abstraction for SQLite databases
 *
 * @package ORM\Dbal
 * @author  Thomas Flori <[email protected]>
 */
class Sqlite extends Dbal
{
    protected static $typeMapping = [
        'integer' => Type\Integer::class,
        'int' => Type\Integer::class,

        'double' => Type\Double::class,
        'real' => Type\Double::class,
        'float' => Type\Double::class,
        'numeric' => Type\Double::class,
        'decimal' => Type\Double::class,

        'varchar' => Type\VarChar::class,
        'character' => Type\VarChar::class,

        'text' => Type\Text::class,

        'boolean' => Type\Boolean::class,
        'json' => Type\Json::class,

        'datetime' => Type\DateTime::class,
        'date' => Type\DateTime::class,
        'time' => Type\Time::class,
    ];

    public function insert($entity, $useAutoIncrement = true)
    {
        $statement = $this->buildInsertStatement($entity);
        $pdo = $this->em->getConnection();

        if ($useAutoIncrement && $entity::isAutoIncremented()) {
            $pdo->query($statement);
            return $pdo->lastInsertId();
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
        }

        $pdo->query($statement);
        $this->em->sync($entity, true);
        return true;
    }

    public function describe($schemaTable)
    {
        $table = explode(static::$identifierDivider, $schemaTable);
        list($schema, $table) = count($table) === 2 ? $table : [null, $table[0]];
        $schema = $schema !== null ? $this->escapeIdentifier($schema) . '.' : '';

        $result = $this->em->getConnection()->query(
            'PRAGMA ' . $schema . 'table_info(' . $this->escapeIdentifier($table) . ')'
        );
        $rawColumns = $result->fetchAll(\PDO::FETCH_ASSOC);

        if (count($rawColumns) === 0) {
            throw new Exception('Unknown table '  . $table);
        }

        $hasMultiplePrimaryKey = $this->hasMultiplePrimaryKey($rawColumns);

        $cols = array_map(function ($rawColumn) use ($hasMultiplePrimaryKey) {
            $columnDefinition = $this->normalizeColumnDefinition($rawColumn, $hasMultiplePrimaryKey);
            return Column::factory($columnDefinition, $this->getType($columnDefinition));
        }, $rawColumns);

        return $cols;
    }

    /**
     * Checks $rawColumns for a multiple primary key
     *
     * @param array $rawColumns
     * @return bool
     */
    protected function hasMultiplePrimaryKey($rawColumns)
    {
        return count(array_filter(array_map(function ($rawColumn) {
            return $rawColumn['pk'];
        }, $rawColumns))) > 1;
    }

    /**
     * Normalize a column definition
     *
     * The column definition from "PRAGMA table_info(<table>)" is to special as useful. Here we normalize it to a more
     * ANSI-SQL style.
     *
     * @param array $rawColumn
     * @return array
     */
    protected function normalizeColumnDefinition($rawColumn, $hasMultiplePrimaryKey = false)
    {
        $definition = [];
        $definition['data_type'] = $this->normalizeType($rawColumn['type']);
        $definition['column_name'] = $rawColumn['name'];
        $definition['is_nullable'] = $rawColumn['notnull'] === '0';
        $definition['column_default'] = $rawColumn['dflt_value'];
        $definition['character_maximum_length'] = null;
        $definition['datetime_precision'] = null;

        switch ($definition['data_type']) {
            case 'varchar':
            case 'char':
                $definition['character_maximum_length'] = $this->extractParenthesis($rawColumn['type']);
                break;
            case 'datetime':
            case 'timestamp':
            case 'time':
                $definition['datetime_precision'] = $this->extractParenthesis($rawColumn['type']);
                break;
            case 'integer':
                if (!$definition['column_default'] && $rawColumn['pk'] === '1' && !$hasMultiplePrimaryKey) {
                    $definition['column_default'] = 'sequence(rowid)';
                }
                break;
        }

        return $definition;
    }

    protected function getType($columnDefinition)
    {
        if (isset(static::$typeMapping[$columnDefinition['data_type']])) {
            return call_user_func([static::$typeMapping[$columnDefinition['data_type']], 'factory'], $columnDefinition);
        }

        return parent::getType($columnDefinition);
    }
}


1		<?php
2
3		namespace ORM\Dbal;
4
5		use ORM\Dbal;
6		use ORM\Exception;
7
8		/**
9		* Database abstraction for SQLite databases
10		*
11		* @package ORM\Dbal
12		* @author Thomas Flori <[email protected]>
13		*/
14		class Sqlite extends Dbal
15		{
16		protected static $typeMapping = [
17		'integer' => Type\Integer::class,
18		'int' => Type\Integer::class,
19
20		'double' => Type\Double::class,
21		'real' => Type\Double::class,
22		'float' => Type\Double::class,
23		'numeric' => Type\Double::class,
24		'decimal' => Type\Double::class,
25
26		'varchar' => Type\VarChar::class,
27		'character' => Type\VarChar::class,
28
29		'text' => Type\Text::class,
30
31		'boolean' => Type\Boolean::class,
32		'json' => Type\Json::class,
33
34		'datetime' => Type\DateTime::class,
35		'date' => Type\DateTime::class,
36		'time' => Type\Time::class,
37		];
38
39	2	public function insert($entity, $useAutoIncrement = true)
40		{
41	2	$statement = $this->buildInsertStatement($entity);
42	2	$pdo = $this->em->getConnection();
43
44	2	if ($useAutoIncrement && $entity::isAutoIncremented()) {
45	1	$pdo->query($statement);
46	1	return $pdo->lastInsertId();
		0 ignored issues – show Bug Best Practice introduced 2017-05-18 06:03 UTC by Report Bug Copy Issue Report The return type of `return $pdo->lastInsertId();` (`string`) is incompatible with the return type of the parent method `ORM\Dbal::insert` of type `boolean`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
47		}
48
49	1	$pdo->query($statement);
50	1	$this->em->sync($entity, true);
51	1	return true;
52		}
53
54	32	public function describe($schemaTable)
55		{
56	32	$table = explode(static::$identifierDivider, $schemaTable);
57	32	list($schema, $table) = count($table) === 2 ? $table : [null, $table[0]];
58	32	$schema = $schema !== null ? $this->escapeIdentifier($schema) . '.' : '';
59
60	32	$result = $this->em->getConnection()->query(
61	32	'PRAGMA ' . $schema . 'table_info(' . $this->escapeIdentifier($table) . ')'
62		);
63	32	$rawColumns = $result->fetchAll(\PDO::FETCH_ASSOC);
64
65	32	if (count($rawColumns) === 0) {
66	2	throw new Exception('Unknown table ' . $table);
67		}
68
69	30	$hasMultiplePrimaryKey = $this->hasMultiplePrimaryKey($rawColumns);
70
71		$cols = array_map(function ($rawColumn) use ($hasMultiplePrimaryKey) {
72	30	$columnDefinition = $this->normalizeColumnDefinition($rawColumn, $hasMultiplePrimaryKey);
73	30	return Column::factory($columnDefinition, $this->getType($columnDefinition));
74	30	}, $rawColumns);
75
76	30	return $cols;
77		}
78
79		/**
80		* Checks $rawColumns for a multiple primary key
81		*
82		* @param array $rawColumns
83		* @return bool
84		*/
85		protected function hasMultiplePrimaryKey($rawColumns)
86		{
87	30	return count(array_filter(array_map(function ($rawColumn) {
88	30	return $rawColumn['pk'];
89	30	}, $rawColumns))) > 1;
90		}
91
92		/**
93		* Normalize a column definition
94		*
95		* The column definition from "PRAGMA table_info(<table>)" is to special as useful. Here we normalize it to a more
96		* ANSI-SQL style.
97		*
98		* @param array $rawColumn
99		* @return array
100		*/
101	30	protected function normalizeColumnDefinition($rawColumn, $hasMultiplePrimaryKey = false)
102		{
103	30	$definition = [];
104	30	$definition['data_type'] = $this->normalizeType($rawColumn['type']);
105	30	$definition['column_name'] = $rawColumn['name'];
106	30	$definition['is_nullable'] = $rawColumn['notnull'] === '0';
107	30	$definition['column_default'] = $rawColumn['dflt_value'];
108	30	$definition['character_maximum_length'] = null;
109	30	$definition['datetime_precision'] = null;
110
111	30	switch ($definition['data_type']) {
112	30	case 'varchar':
113	28	case 'char':
114	2	$definition['character_maximum_length'] = $this->extractParenthesis($rawColumn['type']);
115	2	break;
116	28	case 'datetime':
117	27	case 'timestamp':
118	27	case 'time':
119	2	$definition['datetime_precision'] = $this->extractParenthesis($rawColumn['type']);
120	2	break;
121	26	case 'integer':
122	9	if (!$definition['column_default'] && $rawColumn['pk'] === '1' && !$hasMultiplePrimaryKey) {
123	1	$definition['column_default'] = 'sequence(rowid)';
124		}
125	9	break;
126		}
127
128	30	return $definition;
129		}
130
131	30	protected function getType($columnDefinition)
132		{
133	30	if (isset(static::$typeMapping[$columnDefinition['data_type']])) {
134	29	return call_user_func([static::$typeMapping[$columnDefinition['data_type']], 'factory'], $columnDefinition);
135		}
136
137	1	return parent::getType($columnDefinition);
138		}
139		}
140

tflori / orm

Pull Request — master (#36)

Sqlite A

Complexity

Size/Duplication

Coupling/Cohesion

Test Coverage

Importance

5 Methods

Duplication Side-by-Side

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