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<?php |
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namespace Protoqol\Prequel\Classes\Database; |
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use Exception; |
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/** |
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* Get queries based on chosen SQL driver. |
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* Class SequelAdapter |
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* |
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* @package Protoqol\LaravelSequel\Classes\Database |
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*/ |
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class SequelAdapter |
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{ |
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/** |
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* Holds database type e.g. 'mysql', 'pgsql', 'sqlite' etc. |
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* |
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* @var string $databaseType |
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*/ |
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private $databaseType; |
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/** |
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* SequelAdapter constructor. |
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* |
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* @param string $databaseType |
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*/ |
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public function __construct(string $databaseType) |
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{ |
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$this->databaseType = $databaseType; |
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} |
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/** |
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* Get all tables |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function showTables() |
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{ |
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switch ($this->databaseType) { |
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case 'mysql': |
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return 'SHOW TABLES;'; |
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case 'pgsql': |
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return 'SELECT * FROM pg_catalog.pg_tables;'; |
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case 'sqlite': |
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return 'SELECT name FROM sqlite_master WHERE type="table";'; |
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case 'sqlsrv': |
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return 'SELECT * FROM INFORMATION_SCHEMA.TABLES; GO'; |
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default: |
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throw new Exception('Selected invalid or unsupported database driver'); |
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} |
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} |
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/** |
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* @return string |
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* @throws \Exception |
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*/ |
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public function showDatabases() |
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{ |
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switch ($this->databaseType) { |
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case 'mysql': |
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return 'SHOW DATABASES;'; |
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case 'pgsql': |
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return 'SELECT datname FROM pg_database WHERE datistemplate = false;'; |
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default: |
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throw new Exception('Selected invalid or unsupported database driver'); |
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} |
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} |
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/** |
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* @param string $databaseName |
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* |
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* @return string |
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* @throws \Exception |
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*/ |
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public function showTablesFrom(string $databaseName) |
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{ |
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switch ($this->databaseType) { |
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case 'mysql': |
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return 'SHOW TABLES FROM `'.$databaseName.'`;'; |
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case 'pgsql': |
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return 'SELECT * FROM pg_catalog.pg_tables;'; |
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default: |
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throw new Exception('Selected invalid or unsupported database driver'); |
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} |
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} |
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} |
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Protoqol /
Prequel
