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| 1 | <?php declare(strict_types=1); |
| 2 | /** |
| 3 | * Query |
| 4 | * |
| 5 | * SQL Query Builder / Database Abstraction Layer |
| 6 | * |
| 7 | * PHP version 8.1 |
| 8 | * |
| 9 | * @package Query |
| 10 | * @author Timothy J. Warren <tim@timshome.page> |
| 11 | * @copyright 2012 - 2023 Timothy J. Warren |
| 12 | * @license http://www.opensource.org/licenses/mit-license.html MIT License |
| 13 | * @link https://git.timshomepage.net/aviat/Query |
| 14 | * @version 4.0.0 |
| 15 | */ |
| 16 | |
| 17 | namespace Query\Drivers\Pgsql; |
| 18 | |
| 19 | use Query\Drivers\AbstractDriver; |
| 20 | |
| 21 | /** |
| 22 | * PostgreSQL specific class |
| 23 | */ |
| 24 | class Driver extends AbstractDriver |
| 25 | { |
| 26 | /** |
| 27 | * Connect to a PosgreSQL database |
| 28 | * |
| 29 | * @codeCoverageIgnore |
| 30 | */ |
| 31 | public function __construct(string $dsn, ?string $username=NULL, ?string $password=NULL, array $options=[]) |
| 32 | { |
| 33 | if ( ! str_contains($dsn, 'pgsql')) |
| 34 | { |
| 35 | $dsn = 'pgsql:' . $dsn; |
| 36 | } |
| 37 | |
| 38 | parent::__construct($dsn, $username, $password, $options); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Get a list of schemas for the current connection |
| 43 | */ |
| 44 | public function getSchemas(): ?array |
| 45 | { |
| 46 | $sql = <<<SQL |
| 47 | SELECT DISTINCT "schemaname" FROM "pg_tables" |
| 48 | WHERE "schemaname" NOT LIKE 'pg\_%' |
| 49 | AND "schemaname" != 'information_schema' |
| 50 | SQL; |
| 51 | |
| 52 | return $this->driverQuery($sql); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Retrieve foreign keys for the table |
| 57 | */ |
| 58 | public function getFks(string $table): array |
| 59 | { |
| 60 | $valueMap = [ |
| 61 | 'c' => 'CASCADE', |
| 62 | 'r' => 'RESTRICT', |
| 63 | ]; |
| 64 | |
| 65 | $keys = parent::getFks($table); |
| 66 | |
| 67 | foreach ($keys as &$key) |
| 68 | { |
| 69 | foreach (['update', 'delete'] as $type) |
| 70 | { |
| 71 | if ( ! isset($valueMap[$key[$type]])) |
| 72 | { |
| 73 | // @codeCoverageIgnoreStart |
| 74 | continue; |
| 75 | // @codeCoverageIgnoreEnd |
| 76 | } |
| 77 | |
| 78 | $key[$type] = $valueMap[$key[$type]]; |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | return $keys; |
| 83 | } |
| 84 | } |