How to create multiple regex conditions with Doctrine QueryBuilder

Question

When using Doctrine ORM with Postgres, how to create the same as this SQL does with QueryBuilder:

WHERE column2 IS NOT NULL AND (column1 ~= :pattern OR column1 ~= :pattern2)

I'd also like avoiding having all conditions in one line like following:

->andWhere('column2 IS NOT NULL AND (column1 ~= :pattern OR column1 ~= :pattern2'))

Answer 1

The solution is to

1) create custom DQL function

<?php

declare(strict_types=1);

use Doctrine\ORM\Query\AST\Functions\FunctionNode;
use Doctrine\ORM\Query\AST\Node;
use Doctrine\ORM\Query\Lexer;
use Doctrine\ORM\Query\Parser;
use Doctrine\ORM\Query\SqlWalker;
use function sprintf;

/**
 * "REGEX" "(" StringPrimary "," StringPrimary ")"
 */
final class RegexFunction extends FunctionNode
{
    /** @var Node */
    public $fieldExpression;

    /** @var Node */
    public $patternExpression;

    /**
     * @inheritdoc
     */
    public function getSql(SqlWalker $sqlWalker) : string
    {
        return sprintf(
            '%s :: TEXT ~* %s',
            $this->fieldExpression->dispatch($sqlWalker),
            $this->patternExpression->dispatch($sqlWalker)
        );
    }

    /**
     * @inheritdoc
     */
    public function parse(Parser $parser) : void
    {
        $parser->match(Lexer::T_IDENTIFIER);
        $parser->match(Lexer::T_OPEN_PARENTHESIS);

        $this->fieldExpression = $parser->StringPrimary();
        $parser->match(Lexer::T_COMMA);
        $this->patternExpression = $parser->StringPrimary();

        $parser->match(Lexer::T_CLOSE_PARENTHESIS);
    }
}

2) register it in config

3) then in can be used in query builder or expression builder like this:

$expr->orX()->add('REGEX(e.field, :pattern) = true');