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<?php |
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declare(strict_types = 1); |
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namespace Puzzle\QueryBuilder\Queries\Snippets\Joins; |
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use Puzzle\QueryBuilder\Snippet; |
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use Puzzle\QueryBuilder\Queries\Snippets\Join; |
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use Puzzle\QueryBuilder\Queries\Snippets; |
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abstract class AbstractJoin implements Join, Snippet |
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{ |
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private |
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$table, |
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$using, |
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$on; |
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public function __construct(string $table, ?string $alias = null) |
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{ |
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$this->table = new Snippets\TableName($table, $alias); |
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$this->on = []; |
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} |
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/** |
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* @param array[string]|string $column |
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*/ |
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public function using($column): self |
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{ |
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$this->on = []; |
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$this->using = new Snippets\Using($column); |
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return $this; |
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} |
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public function on(?string $leftColumn, ?string $rightColumn): self |
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{ |
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$this->using = null; |
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$this->on[] = new Snippets\On($leftColumn, $rightColumn); |
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return $this; |
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} |
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public function toString(): string |
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{ |
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$joinQueryPart = sprintf( |
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'%s %s', |
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$this->getJoinDeclaration(), |
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$this->table->toString() |
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); |
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$joinQueryPart .= $this->buildOnConditionClause(); |
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$joinQueryPart .= $this->buildUsingConditionClause(); |
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return $joinQueryPart; |
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} |
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abstract protected function getJoinDeclaration(): string; |
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private function buildUsingConditionClause(): string |
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{ |
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if(!$this->using instanceof Snippet) |
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{ |
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return ''; |
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} |
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return ' ' . $this->using->toString(); |
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} |
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private function buildOnConditionClause(): string |
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{ |
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$conditionClause = array(); |
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foreach($this->on as $on) |
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{ |
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if($on instanceof Snippet) |
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{ |
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$conditionClause[] = $on->toString(); |
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} |
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} |
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return empty($conditionClause) ? '' : ' ' . implode('', $conditionClause); |
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} |
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} |
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puzzle-org /
query-builder
Loading history...
Only declaring a single property per statement allows you to later on add doc comments more easily.
It is also recommended by PSR2, so it is a common style that many people expect.