DQL extension not working

Question

In my project I have the following DQL extension

namespace Freedom\Doctrine\ORM\AST\Functions;

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

/**
 * MatchAgainstFunction ::=
 *  "MATCH" "(" StateFieldPathExpression {"," StateFieldPathExpression}* ")" "AGAINST" "("
 *      StringPrimary ["BOOLEAN"] ["EXPAND"] ")"
 */
class MatchAgainstFunction extends FunctionNode
{

    /** @var array list of \Doctrine\ORM\Query\AST\PathExpression */
    protected $pathExp = null;

    /** @var string */
    protected $against = null;

    /** @var boolean */
    protected $booleanMode = false;

    /** @var boolean */
    protected $queryExpansion = false;

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

        // first Path Expression is mandatory
        $this->pathExp = array();
        $this->pathExp[] = $parser->StateFieldPathExpression();

        // Subsequent Path Expressions are optional
        $lexer = $parser->getLexer();
        while ($lexer->isNextToken(Lexer::T_COMMA)) {
            $parser->match(Lexer::T_COMMA);
            $this->pathExp[] = $parser->StateFieldPathExpression();
        }

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

        // against
        if (strtolower($lexer->lookahead['value']) !== 'against') {
            $parser->syntaxError('against');
        }

        $parser->match(Lexer::T_IDENTIFIER);
        $parser->match(Lexer::T_OPEN_PARENTHESIS);
        $this->against = $parser->StringPrimary();

        if (strtolower($lexer->lookahead['value']) === 'boolean') {
            $parser->match(Lexer::T_IDENTIFIER);
            $this->booleanMode = true;
        }

        if (strtolower($lexer->lookahead['value']) === 'expand') {
            $parser->match(Lexer::T_IDENTIFIER);
            $this->queryExpansion = true;
        }

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

    public function getSql(SqlWalker $walker)
    {
        $fields = array();
        foreach ($this->pathExp as $pathExp) {
            $fields[] = $pathExp->dispatch($walker);
        }

        $against = $walker->walkStringPrimary($this->against)
                . ($this->booleanMode ? ' IN BOOLEAN MODE' : '')
                . ($this->queryExpansion ? ' WITH QUERY EXPANSION' : '');

        return sprintf('MATCH (%s) AGAINST (%s)', implode(', ', $fields), $against);
    }

}

and in my DQL I have

$builder->andWhere('MATCH (t.title) AGAINST (:title)')
        ->setParameter('title', $param);

I am getting the error

[Syntax Error] line 0, col 204: Error: Expected =, <, <=, <>, >, >=, !=, got 'ORDER'

I have an orderBy after the andWhere in my DQL.

Does anyone know why Doctrine is looking for a comparison operator?

Answer 1

I have figured it out. I changed my DQL to

$builder->andWhere('MATCH (t.title) AGAINST (:title BOOLEAN) > 0')
        ->setParameter('title', $param);

and it seems to be working now.