Getters::getColumns() - Code Metrics - Inspection of "Breaking one huge class into several smaller trait..." - ajant/SimpleArrayLibrary - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b87405...9bfa56 )

by Aleksandar

created 2016-08-21 13:45 UTC

Getters::getColumns() C

↳ Parent: Getters

Complexity

Conditions	12
Paths	27

Size

Total Lines	30
Code Lines	17

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	30
rs	5.1612
cc	12
eloc	17
nc	27
nop	3

How to fix Complexity

<?php

namespace SimpleArrayLibrary\Categories;

use InvalidArgumentException;
use UnexpectedValueException;

trait Getters
{
    /**
     * Extracts a column from an array
     *
     * @param array $array
     * @param array $columns
     * @param bool  $allRowsMustHaveAllColumns
     *
     * @return array
     * @throws UnexpectedValueException
     */
    public static function getColumns(array $array, array $columns, $allRowsMustHaveAllColumns = false)
    {
        // validation
        foreach ($array as $key => $row) {
            if (!is_array($row)) {
                throw new UnexpectedValueException('Array element "' . $key . '" is not an array');
            }
        }
        foreach ($columns as $key => $column) {
            if (!is_string($column) && !is_numeric($column)) {
                throw new InvalidArgumentException('Invalid column type in columns array, index "' . $key . '"');
            }
        }
        if (!is_bool($allRowsMustHaveAllColumns)) {
            throw new InvalidArgumentException('allRowsMustHaveAllColumns flag must be boolean');
        }

        $return = array_fill_keys($columns, array());
        foreach ($array as $key => $row) {
            foreach ($columns as $column) {
                if (isset($row[$column]) || array_key_exists($column, $row)) {
                    $return[$column][$key] = $row[$column];
                } elseif ($allRowsMustHaveAllColumns) {
                    throw new UnexpectedValueException('Row "' . $key . '" is missing column: "' . $column . '"');
                }
            }
        }

        return $return;
    }

    /**
     * Checks if an array is rectangular array and returns dimensions or -1 if it's not rectangular
     *
     * @param array $array
     *
     * @return int|array
     */
    public static function getRectangularDimensions(array $array)
    {
        $return = -1;
        $allArrays = array_map('is_array', $array);
        // all elements are arrays, iterate through them and call the static function recursively
        if (self::allElementsEqual($allArrays, true)) {
            $elementsPerArray = array();
            foreach ($array as $row) {
                $noElements = self::getRectangularDimensions($row);
                if ($noElements == -1) {
                    return $noElements;
                }
                $elementsPerArray[] = $noElements;
            }
            if (!self::allElementsEqual($elementsPerArray)) {
                return -1;
            } else {
                $return   = reset($elementsPerArray);
                $return[] = count($elementsPerArray);
            }
        } // none of the elements are arrays, return number of elements of the "bottom" array
        elseif (self::allElementsEqual($allArrays, false)) {
            $return = array(0 => count($array));
        }

        return $return;
    }

    /**
     * Selects random sub array
     *
     * @param array $array
     * @param int $numberOfRequiredElements
     *
     * @return array
     * @throws InvalidArgumentException
     */
    public static function selectRandomArrayElements(array $array, $numberOfRequiredElements)
    {
        // validation, must be positive int or 0
        if (!self::isLogicallyCastableToInt($numberOfRequiredElements)) {
            throw new InvalidArgumentException('Number of requested elements parameter must be a positive integer');
        }
        if ($numberOfRequiredElements <= 0) {
            throw new InvalidArgumentException('Number of requested elements parameter must be a positive integer');
        }

        $selected = $array;
        if (count($array) > $numberOfRequiredElements) {
            // select required number of random keys
            $selectedKeys = array_rand($array, $numberOfRequiredElements);
            $selectedKeys = $numberOfRequiredElements == 1 ? [$selectedKeys] : $selectedKeys;
            // select only array members with selected random keys
            $selected = array_intersect_key($array, array_fill_keys($selectedKeys, null));
        }

        return $selected;
    }
}

1			<?php
2
3			namespace SimpleArrayLibrary\Categories;
4
5			use InvalidArgumentException;
6			use UnexpectedValueException;
7
8			trait Getters
9			{
10			/**
11			* Extracts a column from an array
12			*
13			* @param array $array
14			* @param array $columns
15			* @param bool $allRowsMustHaveAllColumns
16			*
17			* @return array
18			* @throws UnexpectedValueException
19			*/
20			public static function getColumns(array $array, array $columns, $allRowsMustHaveAllColumns = false)
21			{
22			// validation
23			foreach ($array as $key => $row) {
24			if (!is_array($row)) {
25			throw new UnexpectedValueException('Array element "' . $key . '" is not an array');
26			}
27			}
28			foreach ($columns as $key => $column) {
29			if (!is_string($column) && !is_numeric($column)) {
30			throw new InvalidArgumentException('Invalid column type in columns array, index "' . $key . '"');
31			}
32			}
33			if (!is_bool($allRowsMustHaveAllColumns)) {
34			throw new InvalidArgumentException('allRowsMustHaveAllColumns flag must be boolean');
35			}
36
37			$return = array_fill_keys($columns, array());
38			foreach ($array as $key => $row) {
39			foreach ($columns as $column) {
40			if (isset($row[$column]) \|\| array_key_exists($column, $row)) {
41			$return[$column][$key] = $row[$column];
42			} elseif ($allRowsMustHaveAllColumns) {
43			throw new UnexpectedValueException('Row "' . $key . '" is missing column: "' . $column . '"');
44			}
45			}
46			}
47
48			return $return;
49			}
50
51			/**
52			* Checks if an array is rectangular array and returns dimensions or -1 if it's not rectangular
53			*
54			* @param array $array
55			*
56			* @return int\|array
57			*/
58			public static function getRectangularDimensions(array $array)
59			{
60			$return = -1;
61			$allArrays = array_map('is_array', $array);
62			// all elements are arrays, iterate through them and call the static function recursively
63			if (self::allElementsEqual($allArrays, true)) {
64			$elementsPerArray = array();
65			foreach ($array as $row) {
66			$noElements = self::getRectangularDimensions($row);
67			if ($noElements == -1) {
68			return $noElements;
69			}
70			$elementsPerArray[] = $noElements;
71			}
72			if (!self::allElementsEqual($elementsPerArray)) {
73			return -1;
74			} else {
75			$return = reset($elementsPerArray);
76			$return[] = count($elementsPerArray);
77			}
78			} // none of the elements are arrays, return number of elements of the "bottom" array
79			elseif (self::allElementsEqual($allArrays, false)) {
80			$return = array(0 => count($array));
81			}
82
83			return $return;
84			}
85
86			/**
87			* Selects random sub array
88			*
89			* @param array $array
90			* @param int $numberOfRequiredElements
91			*
92			* @return array
93			* @throws InvalidArgumentException
94			*/
95			public static function selectRandomArrayElements(array $array, $numberOfRequiredElements)
96			{
97			// validation, must be positive int or 0
98			if (!self::isLogicallyCastableToInt($numberOfRequiredElements)) {
99			throw new InvalidArgumentException('Number of requested elements parameter must be a positive integer');
100			}
101			if ($numberOfRequiredElements <= 0) {
102			throw new InvalidArgumentException('Number of requested elements parameter must be a positive integer');
103			}
104
105			$selected = $array;
106			if (count($array) > $numberOfRequiredElements) {
107			// select required number of random keys
108			$selectedKeys = array_rand($array, $numberOfRequiredElements);
109			$selectedKeys = $numberOfRequiredElements == 1 ? [$selectedKeys] : $selectedKeys;
110			// select only array members with selected random keys
111			$selected = array_intersect_key($array, array_fill_keys($selectedKeys, null));
112			}
113
114			return $selected;
115			}
116			}

ajant / SimpleArrayLibrary

Push — master ( b87405...9bfa56 )

Getters::getColumns() C

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

Filter issues like