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                <?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 7.1  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package     Query  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author      Timothy J. Warren <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright   2012 - 2018 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/aviat4ion/Query  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                	 * @param string $dsn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $username  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $password  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param array  $options  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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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 (strpos($dsn, 'pgsql') === FALSE)  | 
            
            
                                                                        
                            
            
                                    
            
            
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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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                	 * @param string $table  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function getFks($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]])) continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                }  | 
            
            
                        
There are different options of fixing this problem.
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