[GH-462] [DDC-2055] Generate SELECT clause from ResultSetMappingBuilder

This issue is created automatically through a Github pull request on behalf of beberlei:

Url: https://github.com/doctrine/doctrine2/pull/462

Message:

Add support to generate entity result parts of the SELECT clause from a ResultSetMappingBuilder instance. Add support for column incrementing.

Sample:

public function testGenerateSelectClauseIncrement()

{ $rsm = new ResultSetMappingBuilder($this->_em); $rsm->addRootEntityFromClassMetadata('Doctrine\Tests\Models\CMS\CmsUser', 'u', ResultSetMappingBuilder::COLUMN_RENAMING_INCREMENT); $selectClause = $rsm->generateSelectClause(); $this->assertEquals('u.id AS id0, u.status AS status1, u.username AS username2, u.name AS name3, u.email_id AS email_id4', $selectClause); }

Restrictions:

This only generates the entity result clauses, not the ones for scalar results! Because we don't know what the scalar result actually means.