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<?php |
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namespace Elimuswift\DbExporter; |
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use DB; |
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abstract class DbExporter |
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{ |
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/** |
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* Contains the ignore tables. |
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* |
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* @var array |
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*/ |
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public static $ignore = ['migrations']; |
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public static $remote; |
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/** |
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* Get all the tables. |
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* |
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* @return mixed |
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*/ |
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public $database; |
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/** |
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* Select fields. |
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* |
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* @var array |
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**/ |
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protected $selects = [ |
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'column_name as Field', |
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'column_type as Type', |
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'is_nullable as Nullable', |
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'column_key as Key', |
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'column_default as Default', |
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'extra as Extra', |
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'data_type as Data_Type', |
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'CHARACTER_MAXIMUM_LENGTH as Length', |
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'NUMERIC_PRECISION as Precision', |
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'NUMERIC_SCALE as Scale', |
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]; |
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/** |
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* Select fields from constraints. |
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* |
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* @var array |
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**/ |
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protected $constraints = [ |
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'key_column_usage.table_name as Table', |
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'key_column_usage.column_name as Field', |
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'key_column_usage.referenced_table_name as ON', |
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'key_column_usage.referenced_column_name as References', |
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'REFERENTIAL_CONSTRAINTS.UPDATE_RULE as onUpdate', |
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'REFERENTIAL_CONSTRAINTS.DELETE_RULE as onDelete', |
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]; |
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protected function getTables() |
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{ |
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$pdo = DB::connection()->getPdo(); |
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return $pdo->query('SELECT table_name FROM information_schema.tables WHERE table_schema="'.$this->database.'"'); |
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} |
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public function getTableIndexes($table) |
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{ |
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$pdo = DB::connection()->getPdo(); |
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return $pdo->query('SHOW INDEX FROM '.$this->database.'.'.$table.' WHERE Key_name != "PRIMARY"'); |
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} |
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/** |
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* Get all the columns for a given table. |
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* |
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* @param $table |
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* |
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* @return array |
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*/ |
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protected function getTableDescribes($table) |
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{ |
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return DB::table('information_schema.columns') |
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->where('table_schema', '=', $this->database) |
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->where('table_name', '=', $table) |
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->get($this->selects); |
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} |
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/** |
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* Get all the foreign key constraints for a given table. |
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* |
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* @param $table |
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* |
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* @return array |
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*/ |
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protected function getTableConstraints($table) |
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{ |
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return DB::table('information_schema.key_column_usage') |
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->distinct() |
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->join('information_schema.REFERENTIAL_CONSTRAINTS', 'REFERENTIAL_CONSTRAINTS.CONSTRAINT_NAME', '=', 'key_column_usage.CONSTRAINT_NAME') |
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->where('key_column_usage.table_schema', '=', $this->database) |
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->where('key_column_usage.table_name', '=', $table) |
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->get($this->constraints); |
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} |
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/** |
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* Grab all the table data. |
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* |
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* @param $table |
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* |
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* @return mixed |
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*/ |
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protected function getTableData($table) |
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{ |
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return DB::table($this->database.'.'.$table)->get(); |
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} |
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/** |
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* Try to create directories if they dont exist. |
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* |
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* @param string $path |
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**/ |
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protected function makePath($path) |
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{ |
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$del = DIRECTORY_SEPARATOR; |
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$dir = ''; |
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$directories = explode($del, $path); |
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foreach ($directories as $directory) { |
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if (!empty($directory)) { |
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$dir .= $del.$directory; |
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} |
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if (!is_dir($dir)) { |
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@mkdir($dir, 0775, true); |
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} |
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} |
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} |
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/** |
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* Write the file. |
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* |
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* @return mixed |
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*/ |
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abstract public function write(); |
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/** |
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* Convert the database to a usefull format. |
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* |
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* @param null $database |
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* |
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* @return mixed |
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*/ |
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abstract public function convert($database = null); |
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/** |
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* Put the converted stub into a template. |
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* |
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* @return mixed |
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*/ |
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abstract protected function compile($table); |
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} |
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If you suppress an error, we recommend checking for the error condition explicitly: