ChainProcessor::process() - Code Metrics - Inspection of "Added some unit tests for the ETL." - oliverde8/php-etl - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 2bfb13...b8de7b )

by De Cramer

created 2018-03-23 18:07 UTC

ChainProcessor::process() A

↳ Parent: ChainProcessor

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	2
dl	0
loc	3
ccs	2
cts	2
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php

namespace Oliverde8\Component\PhpEtl;

use Oliverde8\Component\PhpEtl\ChainOperation\ChainOperationInterface;
use Oliverde8\Component\PhpEtl\Item\ChainBreakItem;
use Oliverde8\Component\PhpEtl\Item\DataItem;
use Oliverde8\Component\PhpEtl\Item\GroupedItemInterface;
use Oliverde8\Component\PhpEtl\Item\ItemInterface;
use Oliverde8\Component\PhpEtl\Item\StopItem;

/**
 * Class ChainProcessor
 *
 * @author    de Cramer Oliver<[email protected]>
 * @copyright 2018 Oliverde8
 * @package Oliverde8\Component\PhpEtl
 */
class ChainProcessor
{
    /** @var ChainOperationInterface[] */
    protected $chainLinks = [];

    /** @var string[] */
    protected $chainLinkNames = [];

    /**
     * ChainProcessor constructor.
     *
     * @param ChainOperationInterface[] $chainLinks
     */
    public function __construct(array $chainLinks)
    {
        $this->chainLinkNames = array_keys($chainLinks);
        $this->chainLinks = array_values($chainLinks);
    }

    /**
     * Process items.
     *
     * @param \Iterator $items
     * @param $context
     */
    public function process(\Iterator $items, $context)
    {
        $this->processItems($items, 0, $context);
    }

    /**
     * Process list of items with chain starting at $startAt.
     *
     * @param \Iterator $items
     * @param int $startAt
     * @param array $context
     *
     * @return ItemInterface
     */
    protected function processItems(\Iterator $items, $startAt, &$context)
    {
        foreach ($items as $item) {
            $dataItem = new DataItem($item);
            $this->processItem($dataItem, $startAt, $context);
        }

        $stopItem = new StopItem();
        while ($this->processItem($stopItem, $startAt, $context) !== $stopItem);

        return $stopItem;
    }

    /**
     * Process an item, with chains starting at.
     *
     * @param ItemInterface $item
     * @param int $startAt
     * @param array $context
     *
     * @return ItemInterface
     */
    protected function processItem(ItemInterface $item, $startAt, &$context)
    {
        for ($chainNumber = $startAt; $chainNumber < count($this->chainLinks); $chainNumber++) {
for ($i=0; $i<count($array); $i++) { // calls count() on each iteration
}

// Better
for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once
}
            $item = $this->chainLinks[$chainNumber]->process($item, $context);

            if ($item instanceof GroupedItemInterface) {
                $this->processItems($item->getIterator(), $chainNumber + 1, $context);

                return new StopItem();
            } else if ($item instanceof ChainBreakItem) {
                return $item;
            }
        }

        return $item;
    }
}


1		<?php
2
3		namespace Oliverde8\Component\PhpEtl;
4
5		use Oliverde8\Component\PhpEtl\ChainOperation\ChainOperationInterface;
6		use Oliverde8\Component\PhpEtl\Item\ChainBreakItem;
7		use Oliverde8\Component\PhpEtl\Item\DataItem;
8		use Oliverde8\Component\PhpEtl\Item\GroupedItemInterface;
9		use Oliverde8\Component\PhpEtl\Item\ItemInterface;
10		use Oliverde8\Component\PhpEtl\Item\StopItem;
11
12		/**
13		* Class ChainProcessor
14		*
15		* @author de Cramer Oliver<[email protected]>
16		* @copyright 2018 Oliverde8
17		* @package Oliverde8\Component\PhpEtl
18		*/
19		class ChainProcessor
20		{
21		/** @var ChainOperationInterface[] */
22		protected $chainLinks = [];
23
24		/** @var string[] */
25		protected $chainLinkNames = [];
26
27		/**
28		* ChainProcessor constructor.
29		*
30		* @param ChainOperationInterface[] $chainLinks
31		*/
32	4	public function __construct(array $chainLinks)
33		{
34	4	$this->chainLinkNames = array_keys($chainLinks);
35	4	$this->chainLinks = array_values($chainLinks);
36	4	}
37
38		/**
39		* Process items.
40		*
41		* @param \Iterator $items
42		* @param $context
43		*/
44	4	public function process(\Iterator $items, $context)
45		{
46	4	$this->processItems($items, 0, $context);
47	4	}
48
49		/**
50		* Process list of items with chain starting at $startAt.
51		*
52		* @param \Iterator $items
53		* @param int $startAt
54		* @param array $context
55		*
56		* @return ItemInterface
57		*/
58	4	protected function processItems(\Iterator $items, $startAt, &$context)
59		{
60	4	foreach ($items as $item) {
61	4	$dataItem = new DataItem($item);
62	4	$this->processItem($dataItem, $startAt, $context);
63		}
64
65	4	$stopItem = new StopItem();
66	4	while ($this->processItem($stopItem, $startAt, $context) !== $stopItem);
67
68	4	return $stopItem;
69		}
70
71		/**
72		* Process an item, with chains starting at.
73		*
74		* @param ItemInterface $item
75		* @param int $startAt
76		* @param array $context
77		*
78		* @return ItemInterface
79		*/
80	4	protected function processItem(ItemInterface $item, $startAt, &$context)
81		{
82	4	for ($chainNumber = $startAt; $chainNumber < count($this->chainLinks); $chainNumber++) {
		0 ignored issues – show Performance Best Practice introduced 2018-03-23 13:51 UTC by Report Bug Copy Issue Report It seems like you are calling the size function `count()` as part of the test condition. You might want to compute the size beforehand, and not on each iteration. If the size of the collection does not change during the iteration, it is generally a good practice to compute it beforehand, and not on each iteration: for ($i=0; $i<count($array); $i++) { // calls count() on each iteration } // Better for ($i=0, $c=count($array); $i<$c; $i++) { // calls count() just once } Loading history...
83	4	$item = $this->chainLinks[$chainNumber]->process($item, $context);
84
85	4	if ($item instanceof GroupedItemInterface) {
86	2	$this->processItems($item->getIterator(), $chainNumber + 1, $context);
87
88	2	return new StopItem();
89	4	} else if ($item instanceof ChainBreakItem) {
90	3	return $item;
91		}
92		}
93
94	4	return $item;
95		}
96		}
97

oliverde8 / php-etl

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ChainProcessor::process() A

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