| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | Copyright CiviCRM LLC. All rights reserved. | |
| 5 | | | |
| 6 | | This work is published under the GNU AGPLv3 license with some | |
| 7 | | permitted exceptions and without any warranty. For full license | |
| 8 | | and copyright information, see https://civicrm.org/licensing | |
| 9 | +--------------------------------------------------------------------+ |
| 10 | */ |
| 11 | |
| 12 | namespace Civi\Api4\Query; |
| 13 | |
| 14 | /** |
| 15 | * Sql column expression |
| 16 | */ |
| 17 | class SqlField extends SqlExpression { |
| 18 | |
| 19 | protected function initialize() { |
| 20 | if ($this->alias && $this->alias !== $this->expr) { |
| 21 | throw new \API_Exception("Aliasing field names is not allowed, only expressions can have an alias."); |
| 22 | } |
| 23 | $this->fields[] = $this->expr; |
| 24 | } |
| 25 | |
| 26 | public function render(array $fieldList): string { |
| 27 | if (empty($fieldList[$this->expr])) { |
| 28 | throw new \API_Exception("Invalid field '{$this->expr}'"); |
| 29 | } |
| 30 | return $fieldList[$this->expr]['sql_name']; |
| 31 | } |
| 32 | |
| 33 | } |