Doctrine\ORM\Query\Parser::UpdateClause PHP Method

    public function UpdateClause()
    {
        $this->match(Lexer::T_UPDATE);
        $token = $this->_lexer->lookahead;
        $abstractSchemaName = $this->AbstractSchemaName();

        if ($this->_lexer->isNextToken(Lexer::T_AS)) {
            $this->match(Lexer::T_AS);
        }

        $aliasIdentificationVariable = $this->AliasIdentificationVariable();

        $class = $this->_em->getClassMetadata($abstractSchemaName);

        // Building queryComponent
        $queryComponent = array(
            'metadata'     => $class,
            'parent'       => null,
            'relation'     => null,
            'map'          => null,
            'nestingLevel' => $this->_nestingLevel,
            'token'        => $token,
        );
        $this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;

        $this->match(Lexer::T_SET);

        $updateItems = array();
        $updateItems[] = $this->UpdateItem();

        while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
            $this->match(Lexer::T_COMMA);
            $updateItems[] = $this->UpdateItem();
        }

        $updateClause = new AST\UpdateClause($abstractSchemaName, $updateItems);
        $updateClause->aliasIdentificationVariable = $aliasIdentificationVariable;

        return $updateClause;
    }