vendor/illuminate/database/Query/JoinClause.php

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<?php

namespace Illuminate\Database\Query;

use Closure;

class JoinClause extends Builder
{
    /**
     * The type of join being performed.
     *
     * @var string
     */
    public $type;

    /**
     * The table the join clause is joining to.
     *
     * @var string
     */
    public $table;

    /**
     * The connection of the parent query builder.
     *
     * @var \Illuminate\Database\ConnectionInterface
     */
    protected $parentConnection;

    /**
     * The grammar of the parent query builder.
     *
     * @var \Illuminate\Database\Query\Grammars\Grammar
     */
    protected $parentGrammar;

    /**
     * The processor of the parent query builder.
     *
     * @var \Illuminate\Database\Query\Processors\Processor
     */
    protected $parentProcessor;

    /**
     * The class name of the parent query builder.
     *
     * @var string
     */
    protected $parentClass;

    /**
     * Create a new join clause instance.
     *
     * @param  \Illuminate\Database\Query\Builder $parentQuery
     * @param  string  $type
     * @param  string  $table
     * @return void
     */
    public function __construct(Builder $parentQuery, $type, $table)
    {