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<?php |
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namespace Rougin\Describe\Driver; |
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use Rougin\Describe\Column; |
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/** |
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* SQLite Driver |
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* |
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* A database driver extension for SQLite. |
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* |
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* @package Describe |
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* @category Driver |
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* @author Rougin Royce Gutib <[email protected]> |
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*/ |
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class SQLiteDriver implements DriverInterface |
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{ |
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/** |
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* @var array |
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*/ |
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protected $columns = []; |
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/** |
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* @var \PDO |
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*/ |
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protected $pdo; |
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/** |
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* @param PDO $pdo |
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*/ |
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public function __construct(\PDO $pdo) |
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{ |
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$this->pdo = $pdo; |
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} |
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/** |
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* Returns the result. |
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* |
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* @param string $tableName |
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* @return array |
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*/ |
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public function getTable($tableName) |
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{ |
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$this->columns = []; |
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try { |
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$query = $this->pdo->prepare('PRAGMA table_info("' . $tableName . '");'); |
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$query->execute(); |
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$query->setFetchMode(\PDO::FETCH_OBJ); |
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} catch (\PDOException $e) { |
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// Table not found |
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} |
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while ($row = $query->fetch()) { |
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$column = new Column; |
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$this->setProperties($row, $column); |
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$column->setDefaultValue($row->dflt_value); |
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$column->setField($row->name); |
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$column->setDataType(strtolower($row->type)); |
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array_push($this->columns, $column); |
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} |
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return $this->prepareForeignColumns($this->columns, $tableName); |
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} |
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/** |
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* Shows the list of tables. |
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* |
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* @return array |
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*/ |
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public function showTables() |
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{ |
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$tables = []; |
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$query = $this->pdo->prepare('SELECT name FROM sqlite_master WHERE type = "table";'); |
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$query->execute(); |
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$query->setFetchMode(\PDO::FETCH_OBJ); |
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while ($row = $query->fetch()) { |
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if ($row->name != 'sqlite_sequence') { |
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array_push($tables, $row->name); |
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} |
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} |
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return $tables; |
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} |
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/** |
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* Prepares the columns that have foreign keys. |
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* |
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* @param array &$columns |
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* @param object $row |
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*/ |
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protected function setForeignColumn(array &$columns, $row) |
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{ |
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foreach ($columns as $column) { |
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if ($column->getField() == $row->from) { |
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$column->setForeign(true); |
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$column->setReferencedField($row->to); |
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$column->setReferencedTable($row->table); |
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} |
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} |
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return $columns; |
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} |
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/** |
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* Prepares the query for getting the foreign columns. |
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* |
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* @param array $columns |
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* @param string $tableName |
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* @return array |
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*/ |
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protected function prepareForeignColumns(array $columns, $tableName) |
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{ |
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$query = $this->pdo->prepare('PRAGMA foreign_key_list("' . $tableName . '");'); |
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$query->execute(); |
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$query->setFetchMode(\PDO::FETCH_OBJ); |
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while ($row = $query->fetch()) { |
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$this->setForeignColumn($columns, $row); |
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} |
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return $columns; |
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} |
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/** |
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* Sets the properties of the specified column. |
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* |
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* @param mixed $row |
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* @param \Rougin\Describe\Column &$column |
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* @return void |
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*/ |
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protected function setProperties($row, Column &$column) |
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{ |
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if (! $row->notnull) { |
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$column->setNull(true); |
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} |
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if ($row->pk) { |
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$column->setPrimary(true); |
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$column->setAutoIncrement(true); |
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} |
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} |
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} |
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rougin /
describe
