Yajra\Oci8\Connectors\OracleConnector

Complexity

Total Complexity

22

Size/Duplication

Total Lines	181
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	connect()	0	10	2
A	getDsn()	0	15	2
A	parseConfig()	0	11	1
A	setHost()	0	6	2
A	setPort()	0	6	2
A	setProtocol()	0	6	2
A	setServiceId()	0	8	2
A	setTNS()	0	6	1
A	setCharset()	0	8	2
A	checkMultipleHostDsn()	0	17	4
A	createConnection()	0	12	2

<?php

namespace Yajra\Oci8\Connectors;

use Illuminate\Database\Connectors;
use Illuminate\Database\Connectors\Connector;
use Illuminate\Database\Connectors\ConnectorInterface;
use PDO;
use Yajra\Pdo\Oci8;

class OracleConnector extends Connector implements ConnectorInterface
{
    /**
     * The default PDO connection options.
     *
     * @var array
     */
    protected $options = [
        PDO::ATTR_CASE         => PDO::CASE_LOWER,
        PDO::ATTR_ERRMODE      => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
    ];

    /**
     * Establish a database connection.
     *
     * @param array $config
     * @return PDO
     */
    public function connect(array $config)
    {
        $tns = ! empty($config['tns']) ? $config['tns'] : $this->getDsn($config);

        $options = $this->getOptions($config);

        $connection = $this->createConnection($tns, $config, $options);

        return $connection;
    }

    /**
     * Create a DSN string from a configuration.
     *
     * @param  array $config
     * @return string
     */
    protected function getDsn(array $config)
    {
        if (! empty($config['tns'])) {
            return $config['tns'];
        }

        // parse configuration
        $config = $this->parseConfig($config);

        // check multiple connections/host, comma delimiter
        $config = $this->checkMultipleHostDsn($config);

        // return generated tns
        return $config['tns'];
    }

    /**
     * @param array $config
     * @return array
     */
    private function parseConfig(array $config)
    {
        $config = $this->setHost($config);
        $config = $this->setPort($config);
        $config = $this->setProtocol($config);
        $config = $this->setServiceId($config);
        $config = $this->setTNS($config);
        $config = $this->setCharset($config);

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setHost(array $config)
    {
        $config['host'] = isset($config['host']) ? $config['host'] : $config['hostname'];

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setPort(array $config)
    {
        $config['port'] = isset($config['port']) ? $config['port'] : '1521';

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setProtocol(array $config)
    {
        $config['protocol'] = isset($config['protocol']) ? $config['protocol'] : 'TCP';

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setServiceId(array $config)
    {
        $config['service'] = empty($config['service_name'])
            ? $service_param = 'SID = ' . $config['database']
            : $service_param = 'SERVICE_NAME = ' . $config['service_name'];

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setTNS(array $config)
    {
        $config['tns'] = "(DESCRIPTION = (ADDRESS = (PROTOCOL = {$config['protocol']})(HOST = {$config['host']})(PORT = {$config['port']})) (CONNECT_DATA =({$config['service']})))";

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function setCharset(array $config)
    {
        if (! isset($config['charset'])) {
            $config['charset'] = 'AL32UTF8';
        }

        return $config;
    }

    /**
     * @param array $config
     * @return array
     */
    private function checkMultipleHostDsn(array $config)
    {
        $host = is_array($config['host']) ? $config['host'] : explode(',', $config['host']);

        $count = count($host);
        if ($count > 1) {
            $address = "";
            for ($i = 0; $i < $count; $i++) {
                $address .= '(ADDRESS = (PROTOCOL = ' . $config["protocol"] . ')(HOST = ' . trim($host[$i]) . ')(PORT = ' . $config['port'] . '))';
            }

            // create a tns with multiple address connection
            $config['tns'] = "(DESCRIPTION = {$address} (LOAD_BALANCE = yes) (FAILOVER = on) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = {$config['database']})))";
        }

        return $config;
    }

    /**
     * Create a new PDO connection.
     *
     * @param  string $tns
     * @param  array $config
     * @param  array $options
     * @return PDO
     */
    public function createConnection($tns, array $config, array $options)
    {
        // add fallback in case driver is not set, will use pdo instead
        if (! in_array($config['driver'], ['oci8', 'pdo-via-oci8', 'oracle'])) {
            return parent::createConnection($tns, $config, $options);
        }

        $config             = $this->setCharset($config);
        $options['charset'] = $config['charset'];

        return new Oci8($tns, $config['username'], $config['password'], $options);
    }
}