InConditionBuilder::getNullCondition() - Code Metrics - Inspection of "Refactoring and cleanup" - yiisoft/db - Measure and Improve Code Quality continuously with Scrutinizer

Passed
Pull Request — master (#163)

by Wilmer
created 2020-08-31 19:03 UTC
InConditionBuilder::getNullCondition() A

↳ Parent: InConditionBuilder
Complexity

Conditions	2
Paths	2
Size

Total Lines	9
Code Lines	4
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	0
CRAP Score	6
Importance

Changes
Metric	Value
cc	2
eloc	4
nc	2
nop	2
dl	0
loc	9
ccs	0
cts	0
cp	0
crap	6
rs	10
c	0
b	0
f	0
<?php

declare(strict_types=1);

namespace Yiisoft\Db\Query\Conditions;

use Traversable;
use Yiisoft\Db\Expression\ExpressionBuilderInterface;
use Yiisoft\Db\Expression\ExpressionBuilderTrait;
use Yiisoft\Db\Expression\ExpressionInterface;
use Yiisoft\Db\Query\Query;

/**
 * Class InConditionBuilder builds objects of {@see InCondition}.
 */
class InConditionBuilder implements ExpressionBuilderInterface
{
    use ExpressionBuilderTrait;

    /**
     * Method builds the raw SQL from the $expression that will not be additionally escaped or quoted.
     *
     * @param ExpressionInterface|InCondition $expression the expression to be built.
     *
     * @param array $params the binding parameters.
     *
     * @return string the raw SQL that will not be additionally escaped or quoted.
     */
    public function build(ExpressionInterface $expression, array &$params = []): string
    {
        $operator = strtoupper($expression->getOperator());
        $operator = strtoupper($expression->/** @scrutinizer ignore-call */ getOperator());
        $column = $expression->getColumn();
        $column = $expression->getColumn();
        $values = $expression->getValues();
        $values = $expression->getValues();

        if ($column === []) {
            /* no columns to test against */
            return $operator === 'IN' ? '0=1' : '';
        }

        if ($values instanceof Query) {
            return $this->buildSubqueryInCondition($operator, $column, $values, $params);
        }

        if (!is_array($values) && !$values instanceof Traversable) {
            /* ensure values is an array */
            $values = (array) $values;
        }

        if (is_array($column)) {
            if (count($column) > 1) {
                return $this->buildCompositeInCondition($operator, $column, $values, $params);
                return $this->buildCompositeInCondition($operator, $column, /** @scrutinizer ignore-type */ $values, $params);
            } else {
                $column = reset($column);
            }
        }

        if ($column instanceof Traversable) {
            if (iterator_count($column) > 1) {
                return $this->buildCompositeInCondition($operator, $column, $values, $params);
            } else {
                $column->rewind();
                         rewind();
                $column = $column->current();
                $column = $column->current();
            }
        }

        if (is_array($values)) {
            $rawValues = $values;
        } elseif ($values instanceof Traversable) {

            $rawValues = $this->getRawValuesFromTraversableObject($values);
        }

        if (isset($rawValues) && in_array(null, $rawValues, true)) {
            $nullCondition = $this->getNullCondition($operator, $column);
            $nullConditionOperator = $operator === 'IN' ? 'OR' : 'AND';
        }

        $sqlValues = $this->buildValues($expression, $values, $params);

        if (empty($sqlValues)) {
            if (!isset($nullCondition)) {
                return $operator === 'IN' ? '0=1' : '';
            }
            return $nullCondition;
        }

        if (strpos($column, '(') === false) {
            $column = $this->queryBuilder->getDb()->quoteColumnName($column);
        }

        if (count($sqlValues) > 1) {
            $sql = "$column $operator (" . implode(', ', $sqlValues) . ')';
        } else {
            $operator = $operator === 'IN' ? '=' : '<>';
            $sql = $column . $operator . reset($sqlValues);
        }

        return isset($nullCondition) ? sprintf('%s %s %s', $sql, $nullConditionOperator, $nullCondition) : $sql;

    }

    /**
     * Builds $values to be used in {@see InCondition}.
     *
     * @param ConditionInterface|InCondition $condition
     * @param object|array $values
     * @param array $params the binding parameters
     *
     * @return array of prepared for SQL placeholders
     */
    protected function buildValues(ConditionInterface $condition, $values, array &$params = []): array
    {
        $sqlValues = [];
        $column = $condition->getColumn();
        $column = $condition->getColumn();

        if (is_array($column)) {
            $column = reset($column);
        }

        if ($column instanceof Traversable) {
            $column->rewind();
            $column = $column->current();
        }

        foreach ($values as $i => $value) {
            if (is_array($value) || $value instanceof ArrayAccess) {

                $value = isset($value[$column]) ? $value[$column] : null;
            }

            if ($value === null) {
                continue;
            } elseif ($value instanceof ExpressionInterface) {
                $sqlValues[$i] = $this->queryBuilder->buildExpression($value, $params);
            } else {
                $sqlValues[$i] = $this->queryBuilder->bindParam($value, $params);
            }
        }

        return $sqlValues;
    }

    /**
     * Builds SQL for IN condition.
     *
     * @param string $operator
     * @param array|string $columns
     * @param Query $values
     * @param array $params
     *
     * @return string SQL
     */
    protected function buildSubqueryInCondition(string $operator, $columns, Query $values, array &$params = []): string
    {
        $sql = $this->queryBuilder->buildExpression($values, $params);

        if (is_array($columns)) {
            foreach ($columns as $i => $col) {
                if (strpos($col, '(') === false) {
                    $columns[$i] = $this->queryBuilder->getDb()->quoteColumnName($col);
                }
            }

            return '(' . implode(', ', $columns) . ") $operator $sql";
        }

        if (strpos($columns, '(') === false) {
            $columns = $this->queryBuilder->getDb()->quoteColumnName($columns);
        }

        return "$columns $operator $sql";
    }

    /**
     * Builds SQL for IN condition.
     *
     * @param string $operator
     * @param array|Traversable $columns
     * @param array $values
     * @param array $params
     *
     * @return string SQL
     */
    protected function buildCompositeInCondition(string $operator, $columns, $values, array &$params = []): string
    {
        $vss = [];
        foreach ($values as $value) {
            $vs = [];

            foreach ($columns as $column) {
                if (isset($value[$column])) {
                    $vs[] = $this->queryBuilder->bindParam($value[$column], $params);
                } else {
                    $vs[] = 'NULL';
                }
            }
            $vss[] = '(' . implode(', ', $vs) . ')';
        }

        if (empty($vss)) {
            return $operator === 'IN' ? '0=1' : '';
        }

        $sqlColumns = [];
        foreach ($columns as $i => $column) {
            $sqlColumns[] = strpos($column, '(') === false
                ? $this->queryBuilder->getDb()->quoteColumnName($column) : $column;
        }

        return '(' . implode(', ', $sqlColumns) . ") $operator (" . implode(', ', $vss) . ')';
    }

    /**
     * Builds is null/is not null condition for column based on operator.
     *
     * @param string $operator
     * @param string $column
     *
     * @return string is null or is not null condition
     */
    protected function getNullCondition(string $operator, string $column): string
    {
        $column = $this->queryBuilder->getDb()->quoteColumnName($column);

        if ($operator === 'IN') {
            return sprintf('%s IS NULL', $column);
        }

        return sprintf('%s IS NOT NULL', $column);
    }

    /**
     * @param Traversable $traversableObject
     *
     * @return array raw values
     */
    protected function getRawValuesFromTraversableObject(Traversable $traversableObject): array
    {
        $rawValues = [];
        foreach ($traversableObject as $value) {
            if (is_array($value)) {
                $values = array_values($value);
                $rawValues = array_merge($rawValues, $values);
            } else {
                $rawValues[] = $value;
            }
        }

        return $rawValues;
    }
}

yiisoft / db

Pull Request — master (#163)

InConditionBuilder::getNullCondition() A

Complexity

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