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<?php |
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declare(strict_types=1); |
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namespace QB\MySQL\Statement; |
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use QB\Generic\IQueryPart; |
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use QB\Generic\Statement\Select as GenericSelect; |
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use QB\MySQL\Clause\CombiningQuery; |
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use QB\MySQL\Clause\Lock; |
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/** |
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* @SuppressWarnings(PHPMD.ExcessiveClassComplexity) |
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*/ |
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class Select extends GenericSelect |
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{ |
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public const DISTINCTROW = 'DISTINCTROW'; |
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public const HIGH_PRIORITY = 'HIGH_PRIORITY'; |
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public const STRAIGHT_JOIN = 'STRAIGHT_JOIN'; |
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public const SQL_SMALL_RESULT = 'SQL_SMALL_RESULT'; |
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public const SQL_BIG_RESULT = 'SQL_BIG_RESULT'; |
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public const SQL_BUFFER_RESULT = 'SQL_BUFFER_RESULT'; |
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public const SQL_NO_CACHE = 'SQL_NO_CACHE'; |
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public const SQL_CALC_FOUND_ROWS = 'SQL_CALC_FOUND_ROWS'; |
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protected const GROUP_WITH_ROLLUP = 'WITH ROLLUP'; |
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protected bool $groupWithRollup = false; |
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/** @var CombiningQuery[] */ |
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protected array $combiningQueries = []; |
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protected ?Lock $lock = null; |
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protected ?int $outerOffset = null; |
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protected ?int $outerLimit = null; |
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/** @var array<string,string> */ |
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protected array $outerOrderBy = []; |
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protected ?Lock $outerLock = null; |
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/** |
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* @SuppressWarnings("complexity") |
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* |
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* @param string ...$modifiers |
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* |
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* @return $this |
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*/ |
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public function modifier(string ...$modifiers): static |
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{ |
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foreach ($modifiers as $modifier) { |
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switch ($modifier) { |
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case static::ALL: |
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case static::DISTINCT: |
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case static::DISTINCTROW: |
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$this->modifiers[0] = $modifier; |
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break; |
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case static::HIGH_PRIORITY: |
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$this->modifiers[1] = $modifier; |
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break; |
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case static::STRAIGHT_JOIN: |
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$this->modifiers[2] = $modifier; |
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break; |
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case static::SQL_SMALL_RESULT: |
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$this->modifiers[3] = $modifier; |
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break; |
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case static::SQL_BIG_RESULT: |
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$this->modifiers[4] = $modifier; |
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break; |
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case static::SQL_BUFFER_RESULT: |
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$this->modifiers[5] = $modifier; |
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break; |
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case static::SQL_NO_CACHE: |
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$this->modifiers[6] = $modifier; |
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break; |
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case static::SQL_CALC_FOUND_ROWS: |
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$this->modifiers[7] = $modifier; |
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break; |
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} |
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} |
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ksort($this->modifiers); |
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return $this; |
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} |
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/** |
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* @return $this |
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*/ |
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public function groupWithRollup(): static |
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{ |
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$this->groupWithRollup = true; |
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return $this; |
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} |
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/** |
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* @param int|null $offset |
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* |
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* @return $this |
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*/ |
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public function outerOffset(?int $offset): static |
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{ |
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$this->outerOffset = $offset; |
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return $this; |
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} |
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/** |
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* @param int|null $limit |
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* |
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* @return $this |
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*/ |
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public function outerLimit(?int $limit): static |
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{ |
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$this->outerLimit = $limit; |
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return $this; |
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} |
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/** |
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* @param string $column |
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* @param string $direction |
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* |
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* @return $this |
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*/ |
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public function outerOrderBy(string $column, string $direction = 'ASC'): static |
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{ |
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$this->outerOrderBy[$column] = $direction; |
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return $this; |
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} |
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/** |
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* @param Lock $lock |
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* |
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* @return $this |
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*/ |
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public function lock(Lock $lock): static |
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{ |
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$this->lock = $lock; |
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return $this; |
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} |
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/** |
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* @param IQueryPart $select |
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* @param string|null $modifier |
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* |
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* @return $this |
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*/ |
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public function union(IQueryPart $select, ?string $modifier = null): static |
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{ |
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$this->combiningQueries[] = new CombiningQuery(CombiningQuery::TYPE_UNION, $select, $modifier); |
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return $this; |
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} |
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/** |
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* @param Lock $lock |
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* |
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* @return $this |
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*/ |
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public function outerLock(Lock $lock): static |
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{ |
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$this->outerLock = $lock; |
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return $this; |
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} |
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/** |
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* @return string |
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*/ |
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public function __toString(): string |
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{ |
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$parts = array_merge( |
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[parent::__toString()], |
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$this->getLock(), |
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$this->getUnion() |
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); |
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$parts = array_filter($parts); |
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$sql = implode(PHP_EOL, $parts); |
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if ( |
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$this->outerLimit === null && $this->outerOffset === null && count($this->outerOrderBy) === 0 && |
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$this->outerLock === null |
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) { |
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return $sql; |
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} |
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$parts = array_merge( |
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['(' . $sql . ')'], |
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$this->getOuterOrderBy(), |
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$this->getOuterLimit(), |
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$this->getOuterLocks() |
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); |
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$parts = array_filter($parts); |
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return implode(PHP_EOL, $parts); |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getGroupBy(): array |
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{ |
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$groupBy = parent::getGroupBy(); |
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if ($this->groupWithRollup && count($groupBy) > 0) { |
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$groupBy[0] = sprintf('%s %s', $groupBy[0], static::GROUP_WITH_ROLLUP); |
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} |
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return $groupBy; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getLimit(): array |
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{ |
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$parts = []; |
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if ($this->limit !== null && $this->offset !== null) { |
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$parts[] = 'LIMIT ' . $this->offset . ', ' . $this->limit; |
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} elseif ($this->limit !== null) { |
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$parts[] = 'LIMIT ' . $this->limit; |
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} |
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return $parts; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getLock(): array |
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{ |
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if ($this->lock === null) { |
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return []; |
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} |
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return [(string)$this->lock]; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getUnion(): array |
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{ |
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$parts = []; |
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foreach ($this->combiningQueries as $query) { |
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$parts[] = (string)$query; |
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} |
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return $parts; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getOuterOrderBy(): array |
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{ |
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if (count($this->outerOrderBy) === 0) { |
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return []; |
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} |
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$parts = []; |
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foreach ($this->outerOrderBy as $column => $direction) { |
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$parts[] = "$column $direction"; |
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} |
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return ['ORDER BY ' . implode(', ', $parts)]; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getOuterLimit(): array |
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{ |
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$parts = []; |
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if ($this->outerLimit !== null && $this->outerOffset !== null) { |
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$parts[] = 'LIMIT ' . $this->outerOffset . ', ' . $this->outerLimit; |
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} elseif ($this->outerLimit !== null) { |
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$parts[] = 'LIMIT ' . $this->outerLimit; |
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} |
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return $parts; |
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} |
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/** |
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* @return string[] |
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*/ |
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protected function getOuterLocks(): array |
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{ |
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if ($this->outerLock === null) { |
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return []; |
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} |
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return [(string)$this->outerLock]; |
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} |
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} |
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