87 lines
1.7 KiB
PHP
87 lines
1.7 KiB
PHP
<?php declare(strict_types=1);
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/**
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* Query
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*
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* SQL Query Builder / Database Abstraction Layer
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*
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* PHP version 8.1
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*
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* @package Query
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* @author Timothy J. Warren <tim@timshomepage.net>
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* @copyright 2012 - 2022 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @link https://git.timshomepage.net/aviat/Query
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* @version 4.0.0
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*/
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namespace Query\Drivers\Pgsql;
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use Query\Drivers\AbstractDriver;
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/**
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* PostgreSQL specific class
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*/
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class Driver extends AbstractDriver {
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/**
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* Connect to a PosgreSQL database
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*
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* @codeCoverageIgnore
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*/
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public function __construct(string $dsn, string $username=NULL, string $password=NULL, array $options=[])
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{
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if ( ! str_contains($dsn, 'pgsql'))
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{
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$dsn = 'pgsql:'.$dsn;
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}
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parent::__construct($dsn, $username, $password, $options);
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}
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/**
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* Get a list of schemas for the current connection
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*
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* @return array
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*/
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public function getSchemas(): ?array
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{
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$sql = <<<SQL
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SELECT DISTINCT "schemaname" FROM "pg_tables"
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WHERE "schemaname" NOT LIKE 'pg\_%'
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AND "schemaname" != 'information_schema'
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SQL;
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return $this->driverQuery($sql);
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}
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/**
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* Retrieve foreign keys for the table
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*
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* @return mixed[]|null
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*/
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public function getFks(string $table): array
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{
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$valueMap = [
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'c' => 'CASCADE',
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'r' => 'RESTRICT',
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];
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$keys = parent::getFks($table);
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foreach($keys as &$key)
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{
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foreach(['update', 'delete'] AS $type)
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{
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if ( ! isset($valueMap[$key[$type]]))
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{
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// @codeCoverageIgnoreStart
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continue;
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// @codeCoverageIgnoreEnd
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}
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$key[$type] = $valueMap[$key[$type]];
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}
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}
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return $keys;
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}
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} |