Source of file Driver.php

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src/Drivers/Pgsql/Driver.php

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

Covered by 1 test(s):

<?php declare(strict_types=1);

/**

 * Query

 * SQL Query Builder / Database Abstraction Layer

 * PHP version 7.1

 * @package     Query

 * @author      Timothy J. Warren <tim@timshomepage.net>

 * @copyright   2012 - 2018 Timothy J. Warren

 * @license     http://www.opensource.org/licenses/mit-license.html  MIT License

 * @link        https://git.timshomepage.net/aviat4ion/Query

*/

namespace Query\Drivers\Pgsql;

use Query\Drivers\AbstractDriver;

/**

 * PostgreSQL specific class

*/

class Driver extends AbstractDriver {

/**

	 * Connect to a PosgreSQL database

	 * @codeCoverageIgnore

	 * @param string $dsn

	 * @param string $username

	 * @param string $password

	 * @param array  $options

*/

	public function __construct(string $dsn, string $username=NULL, string $password=NULL, array $options=[])

		if (strpos($dsn, 'pgsql') === FALSE)

			$dsn = 'pgsql:'.$dsn;

		parent::__construct($dsn, $username, $password, $options);

/**

	 * Get a list of schemas for the current connection

	 * @return array

*/

	public function getSchemas(): ?array

		$sql = <<<SQL

			SELECT DISTINCT "schemaname" FROM "pg_tables"

			WHERE "schemaname" NOT LIKE 'pg\_%'

			AND "schemaname" != 'information_schema'

SQL;

		return $this->driverQuery($sql);

/**

	 * Retrieve foreign keys for the table

	 * @param string $table

	 * @return array

*/

	public function getFks($table): array

		$valueMap = [

			'c' => 'CASCADE',

			'r' => 'RESTRICT',

];

		$keys = parent::getFks($table);

		foreach($keys as &$key)

			foreach(['update', 'delete'] AS $type)

				if ( ! isset($valueMap[$key[$type]])) continue;

				$key[$type] = $valueMap[$key[$type]];

		return $keys;