ExpressionVisitor::walkComparison() - Code Metrics - psiphp/object-agent - Measure and Improve Code Quality continuously with Scrutinizer

ExpressionVisitor::walkComparison() C
last analyzed 2017-06-03 11:53 UTC

↳ Parent: ExpressionVisitor

Complexity

Conditions	13
Paths	13

Size

Total Lines	48
Code Lines	31

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	48
rs	5.0877
c	0
b	0
f	0
cc	13
eloc	31
nc	13
nop	2

How to fix Complexity

<?php

declare(strict_types=1);

namespace Psi\Bridge\ObjectAgent\Doctrine\PhpcrOdm;

use Doctrine\ODM\PHPCR\Query\Builder\AbstractNode;
use Doctrine\ODM\PHPCR\Query\Builder\QueryBuilder;
use Psi\Component\ObjectAgent\Query\Comparison;
use Psi\Component\ObjectAgent\Query\Composite;
use Psi\Component\ObjectAgent\Query\Expression;

class ExpressionVisitor
{
    private $queryBuilder;
    private $sourceAlias;

    /**
     * @param QueryBuilder $queryBuilder
     */
    public function __construct(QueryBuilder $queryBuilder, string $sourceAlias)
    {
        $this->queryBuilder = $queryBuilder;
        $this->sourceAlias = $sourceAlias;
    }

    /**
     * Walk the given expression to build up the PHPCR-ODM query builder.
     *
     * @param Expression $expr
     * @param AbstractNode|null $parentNode
     */
    public function dispatch(Expression $expr, AbstractNode $parentNode = null)
    {
        if ($parentNode === null) {
            $parentNode = $this->queryBuilder->where();
        }

        switch (true) {

            case $expr instanceof Comparison:
                return $this->walkComparison($expr, $parentNode);

            case $expr instanceof Composite:
                return $this->walkComposite($expr, $parentNode);
        }

        throw new \RuntimeException('Unknown Expression: ' . get_class($expr));
    }

    /**
     * {@inheritdoc}
     */
    private function walkComparison(Comparison $comparison, AbstractNode $parentNode)
    {
        $field = $comparison->getField();
        $value = $comparison->getValue();

        switch ($comparison->getComparator()) {
            case Comparison::EQUALS:
                return $parentNode->eq()->field($this->getField($field))->literal($value)->end();

            case Comparison::NOT_EQUALS:
                return $parentNode->neq()->field($this->getField($field))->literal($value)->end();

            case Comparison::LESS_THAN:
                return $parentNode->lt()->field($this->getField($field))->literal($value)->end();

            case Comparison::LESS_THAN_EQUAL:
                return $parentNode->lte()->field($this->getField($field))->literal($value)->end();

            case Comparison::GREATER_THAN:
                return $parentNode->gt()->field($this->getField($field))->literal($value)->end();

            case Comparison::GREATER_THAN_EQUAL:
                return $parentNode->gte()->field($this->getField($field))->literal($value)->end();

            case Comparison::IN:
                return $this->getInConstraint($parentNode, $field, $value);

            case Comparison::NOT_IN:
                $node = $parentNode->not();
                $this->getInConstraint($node, $field, $value);

                return $node->end();

            case Comparison::CONTAINS:
                return $parentNode->like()->field($this->getField($field))->literal($value)->end();

            case Comparison::NOT_CONTAINS:
                return $parentNode->not()->like()->field($this->getField($field))->literal($value)->end()->end();

            case Comparison::NULL:
                return $parentNode->not()->fieldIsset($this->getField($field))->end();

            case Comparison::NOT_NULL:
                return $parentNode->fieldIsset($this->getField($field));
        }

        throw new \RuntimeException('Unknown comparator: ' . $comparison->getComparator());
    }

    /**
     * {@inheritdoc}
     */
    private function walkComposite(Composite $expression, AbstractNode $parentNode)
    {
        $node = $expression->getType() === Composite::AND ? $parentNode->andX() : $parentNode->orX();

        $expressions = $expression->getExpressions();

        if (empty($expressions)) {
            return $node;
        }

        $leftExpression = array_shift($expressions);
        $this->dispatch($leftExpression, $node);

        $parentNode = $node;
        foreach ($expressions as $index => $expression) {
            if (count($expressions) === $index + 1) {
                $this->dispatch($expression, $parentNode);
                break;
            }

            $this->dispatch($expression, $parentNode);
        }

        return $node;
    }

    /**
     * @param string $field
     *
     * @return string
     */
    private function getField($field): string
    {
        return $this->sourceAlias . '.' . $field;
    }

    /**
     * @param AbstractNode $parentNode
     * @param string $field
     * @param array $values
     */
    private function getInConstraint(AbstractNode $parentNode, $field, array $values)
    {
        $orNode = $parentNode->orx();

        foreach ($values as $value) {
            $orNode->eq()->field($this->getField($field))->literal($value);
        }

        $orNode->end();
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Psi\Bridge\ObjectAgent\Doctrine\PhpcrOdm;
6
7		use Doctrine\ODM\PHPCR\Query\Builder\AbstractNode;
8		use Doctrine\ODM\PHPCR\Query\Builder\QueryBuilder;
9		use Psi\Component\ObjectAgent\Query\Comparison;
10		use Psi\Component\ObjectAgent\Query\Composite;
11		use Psi\Component\ObjectAgent\Query\Expression;
12
13		class ExpressionVisitor
14		{
15		private $queryBuilder;
16		private $sourceAlias;
17
18		/**
19		* @param QueryBuilder $queryBuilder
20		*/
21		public function __construct(QueryBuilder $queryBuilder, string $sourceAlias)
22		{
23		$this->queryBuilder = $queryBuilder;
24		$this->sourceAlias = $sourceAlias;
25		}
26
27		/**
28		* Walk the given expression to build up the PHPCR-ODM query builder.
29		*
30		* @param Expression $expr
31		* @param AbstractNode\|null $parentNode
32		*/
33		public function dispatch(Expression $expr, AbstractNode $parentNode = null)
34		{
35		if ($parentNode === null) {
36		$parentNode = $this->queryBuilder->where();
37		}
38
39	View Code Duplication	switch (true) {
		0 ignored issues – show Duplication introduced 2016-11-04 12:50 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
40		case $expr instanceof Comparison:
41		return $this->walkComparison($expr, $parentNode);
42
43		case $expr instanceof Composite:
44		return $this->walkComposite($expr, $parentNode);
45		}
46
47		throw new \RuntimeException('Unknown Expression: ' . get_class($expr));
48		}
49
50		/**
51		* {@inheritdoc}
52		*/
53		private function walkComparison(Comparison $comparison, AbstractNode $parentNode)
54		{
55		$field = $comparison->getField();
56		$value = $comparison->getValue();
57
58		switch ($comparison->getComparator()) {
59		case Comparison::EQUALS:
60		return $parentNode->eq()->field($this->getField($field))->literal($value)->end();
61
62		case Comparison::NOT_EQUALS:
63		return $parentNode->neq()->field($this->getField($field))->literal($value)->end();
64
65		case Comparison::LESS_THAN:
66		return $parentNode->lt()->field($this->getField($field))->literal($value)->end();
67
68		case Comparison::LESS_THAN_EQUAL:
69		return $parentNode->lte()->field($this->getField($field))->literal($value)->end();
70
71		case Comparison::GREATER_THAN:
72		return $parentNode->gt()->field($this->getField($field))->literal($value)->end();
73
74		case Comparison::GREATER_THAN_EQUAL:
75		return $parentNode->gte()->field($this->getField($field))->literal($value)->end();
76
77		case Comparison::IN:
78		return $this->getInConstraint($parentNode, $field, $value);
79
80		case Comparison::NOT_IN:
81		$node = $parentNode->not();
82		$this->getInConstraint($node, $field, $value);
83
84		return $node->end();
85
86		case Comparison::CONTAINS:
87		return $parentNode->like()->field($this->getField($field))->literal($value)->end();
88
89		case Comparison::NOT_CONTAINS:
90		return $parentNode->not()->like()->field($this->getField($field))->literal($value)->end()->end();
91
92		case Comparison::NULL:
93		return $parentNode->not()->fieldIsset($this->getField($field))->end();
94
95		case Comparison::NOT_NULL:
96		return $parentNode->fieldIsset($this->getField($field));
97		}
98
99		throw new \RuntimeException('Unknown comparator: ' . $comparison->getComparator());
100		}
101
102		/**
103		* {@inheritdoc}
104		*/
105		private function walkComposite(Composite $expression, AbstractNode $parentNode)
106		{
107		$node = $expression->getType() === Composite::AND ? $parentNode->andX() : $parentNode->orX();
108
109		$expressions = $expression->getExpressions();
110
111		if (empty($expressions)) {
112		return $node;
113		}
114
115		$leftExpression = array_shift($expressions);
116		$this->dispatch($leftExpression, $node);
117
118		$parentNode = $node;
119		foreach ($expressions as $index => $expression) {
120		if (count($expressions) === $index + 1) {
121		$this->dispatch($expression, $parentNode);
122		break;
123		}
124
125		$this->dispatch($expression, $parentNode);
126		}
127
128		return $node;
129		}
130
131		/**
132		* @param string $field
133		*
134		* @return string
135		*/
136		private function getField($field): string
137		{
138		return $this->sourceAlias . '.' . $field;
139		}
140
141		/**
142		* @param AbstractNode $parentNode
143		* @param string $field
144		* @param array $values
145		*/
146		private function getInConstraint(AbstractNode $parentNode, $field, array $values)
147		{
148		$orNode = $parentNode->orx();
149
150		foreach ($values as $value) {
151		$orNode->eq()->field($this->getField($field))->literal($value);
152		}
153
154		$orNode->end();
155		}
156		}
157

psiphp / object-agent

ExpressionVisitor::walkComparison() C last analyzed 2017-06-03 11:53 UTC

Complexity

Size

Duplication

Importance

How to fix Complexity

Long Method

Duplication Side-by-Side

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ExpressionVisitor::walkComparison() C
last analyzed 2017-06-03 11:53 UTC