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| 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2023 (original work) Open Assessment Technologies SA; |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | namespace oat\generis\model\kernel\persistence\starsql\search; |
| 23 | |
| 24 | use Laudis\Neo4j\Databags\Statement; |
| 25 | use WikibaseSolutions\CypherDSL\Expressions\Procedures\Procedure; |
| 26 | use WikibaseSolutions\CypherDSL\Query; |
| 27 | |
| 28 | class CountSerializer extends QuerySerializer |
| 29 | { |
| 30 | public function serialyse() |
| 31 | { |
| 32 | $subject = $this->getMainNode(); |
| 33 | |
| 34 | $this->buildMatchPatterns($subject); |
| 35 | $this->buildWhereConditions($subject); |
| 36 | |
| 37 | $query = Query::new()->match($this->matchPatterns); |
| 38 | $query->where($this->whereConditions); |
| 39 | $query->returning(Procedure::raw( |
| 40 | 'count', |
| 41 | Query::rawExpression(sprintf('DISTINCT %s', $subject->getVariable()->getName())) |
| 42 | )); |
| 43 | |
| 44 | return Statement::create($query->build(), $this->parameters); |
| 45 | } |
| 46 | |
| 47 | public function count(bool $count = true): self |
| 48 | { |
| 49 | if ($count) { |
| 50 | return $this; |
| 51 | } else { |
| 52 | return (new QuerySerializer()) |
| 53 | ->setServiceLocator($this->getServiceLocator()) |
| 54 | ->setOptions($this->getOptions()) |
| 55 | ->setDriverEscaper($this->getDriverEscaper()) |
| 56 | ->setCriteriaList($this->criteriaList); |
| 57 | } |
| 58 | } |
| 59 | } |