Passed
Pull Request — master (#20)
by Igor
02:11
created

Avg::__invoke()   A

Complexity

Conditions 3
Paths 4

Size

Total Lines 12
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 9
CRAP Score 3

Importance

Changes 2
Bugs 0 Features 0
Metric Value
cc 3
eloc 8
c 2
b 0
f 0
nc 4
nop 1
dl 0
loc 12
ccs 9
cts 9
cp 1
crap 3
rs 10
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<?php
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/**
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 * @author Igor Pomiluyko <[email protected]>
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 */
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namespace WS\Utils\Collections\Functions\Group\Aggregator;
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use WS\Utils\Collections\Collection;
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use WS\Utils\Collections\Functions\ObjectFunctions;
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class Avg
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{
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    private $fieldName;
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    public function __construct(string $fieldName)
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    {
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        $this->fieldName = $fieldName;
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    }
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    public function __invoke(Collection $collection)
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    {
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        $acc = null;
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        $cnt = 0;
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        foreach ($collection as $element) {
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            $acc += ObjectFunctions::getPropertyValue($element, $this->fieldName);
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            $cnt++;
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        }
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        if (!$cnt) {
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            return null;
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        }
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        return $acc / $cnt;
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    }
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}
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